JP2008054605A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter which has a mat chemical applicator, can change the posture of the mat chemical applicator, and can expand a distance between the mat chemical applicator and a seedling tray so that a worker or the like can easily maintain the seedling mats on the seedling tray. <P>SOLUTION: This rice transplanter 100 comprising a travel portion 1, a planting portion 4 for planting the seedlings of seedling mats in fields, and a mat chemical applicator 10 for spraying a chemical to the seedling mats is characterized by longitudinally swingably supporting the lower end of a support frame 53 for supporting the mat chemical applicator 10 on the rear portion of the travel portion 1, and supporting a nozzle stay 51 for supporting the spraying portion 43 of the mat chemical applicator 10 at a place close to the support frame 53. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to the technology of a rice transplanter equipped with a mat application machine for spraying chemicals such as fertilizers and agricultural chemicals on a seedling mat placed on a seedling stage. Specifically, the mat application machine is moved to a non-working position. The present invention relates to the technology of a rice transplanter equipped with a mat medicine applicator that enables maintenance of a seedling stand as possible.

Carefully spraying a predetermined amount of medicine into a nursery box by hand spraying at the time just before busy rice planting is a very troublesome work, so there has been a method of spraying a large amount of medicine using a power spreader etc. It was taken.
However, it has been difficult and time-consuming to spread the drug evenly on the seedlings to be planted by using such a power spreader. In recent years, a mat dispenser has been installed above the seedling platform of the rice transplanter. In addition, a working machine that can spread a medicine on a seedling mat by the mat medicine, that is, can perform medicine simultaneously with rice planting is used (for example, see Patent Document 1).
JP 2002-027895 A

However, in the case of a rice transplanter equipped with a mat dispensing machine described in the above-mentioned patent document, particularly in the case of a rice transplanter for multi-row planting, the distance from the side of the rice transplanter to the center of the seedling stand becomes long, and the mat The medicine dispenser was in the way, making it difficult for the workers to maintain the seedling mat on the seedling platform (placement from the top of the seat). In addition, in the case of a rice transplanter with eight or more plants, the side seedling platform may be folded during movement or the like, and the mat medicine was obstructed.
Therefore, the problem to be solved by the present invention is to change the posture of the mat dispensing machine so that the operator can easily maintain the seedling mat on the seedling loading table. It is to provide a rice transplanter equipped with a mat medicine applicator that can be expanded.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to claim 1, a rice transplanter comprising a traveling unit, a planting unit for planting seedlings of a seedling mat in a field, and a mat drug application machine for spraying a chemical to the seedling mat, The lower end of the supporting frame to be supported is supported on the rear portion of the traveling portion so as to be able to swing back and forth, and the nozzle stay that supports the spraying portion of the mat medicine applicator can be supported in the vicinity of the supporting frame.

  According to a second aspect of the present invention, the nozzle stay is divided into front and rear, and the front nozzle stay can be connected to a storage stay fixed to a support frame.

  In Claim 3, the horizontal nozzle stay which supports the said spreading | diffusion part while being supported by the front part of the said nozzle stay is divided | segmented into right and left, and one side of this horizontal nozzle stay can be rotated to the back of a rice transplanter It is connected to the other side.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, since the front nozzle stay can be moved rearward together with the spraying portion (front end portion of the mat medicine), the space between the seedling table and the mat medicine can be widened. , It becomes easy for the operator to enter between the seedling table and the mat medicine applicator. As a result, it becomes easy for an operator or the like to place the seedling mat on the seedling placing table, and maintenance becomes easy.

  In claim 2, since it is possible to move the front end portion of the mat medicine applicator backward with a simple configuration, it becomes easy for workers and the like to place the seedling mat on the seedling mounting table at an inexpensive manufacturing cost, Maintenance also becomes easier.

  In Claim 3, since the side part of a mat | matte medicine dispenser can be moved back, it becomes possible to enlarge the distance between a seedling stand side part and a mat | matte medicine machine side part, and an operator As a result, it becomes easy for an operator or the like to place the seedling mat on the seedling table and to perform maintenance.

Next, embodiments of the invention will be described.
FIG. 1 is a side view showing an overall configuration of a riding rice transplanter 100 according to an embodiment of the present invention, FIG. 2 is a side view showing a rear portion of the riding rice transplanter 100, FIG. 3 is a rear view, and FIG. FIG. 5 is a plan view showing the left and right frames 59L and 59R, with the machine 10 tilted backward.

Below, the whole structure of the riding rice transplanter 100 provided with the mat medicine applicator 10 which is one Embodiment of the rice transplanter of this invention is demonstrated using FIG.1 and FIG.2.
The rice transplanter according to the present invention can be widely applied to rice transplanters equipped with a mat medicine applicator at the rear, and the application range is not limited to the riding rice transplanter 100 of the present embodiment. Here, the “rice transplanter” refers to a machine for planting rice seedlings in a paddy field, and includes both a riding rice transplanter that is operated by an operator and a walking rice transplanter that is pressed and operated by an operator.
In the following description, for the sake of convenience, the aircraft traveling direction (direction of arrow A in FIG. 1) is defined as “front”, the left direction (left direction in FIG. 5) toward the traveling direction is set to the left, and toward the traveling direction. The description will be made with the right direction (the right direction in FIG. 5) as the right side.

The riding rice transplanter 100 is an embodiment of the rice transplanter, and the planting unit 4 is disposed at the rear of the traveling unit 1 via the lifting link mechanism 27.
The traveling unit 1 mounts the engine 2 above the front part of the vehicle body frame 3, supports the front wheels 6 through the front axle case at the front lower part, and supports the rear wheels 8 through the rear axle case 7 at the lower rear part. . The engine 2 is covered with a bonnet 9.

The riding rice transplanter 100 arranges steering handles 14 on a dashboard 5 provided at the rear of the hood 9, and covers the left and right sides of the bonnet 9 and the upper surface of the body frame 3 at the rear of the hood 9 with a body cover 12. Yes. A seat 13 is disposed behind the steering handle 14, and an operator places his / her feet on the left and right sides of the bonnet 9, the front of the seat 13, the left and right sides of the seat 13, and the rear of the seat 13.
The riding rice transplanter 100 is provided with a traveling speed change lever 30, a planting elevating and lowering transmission speed change lever 31, a planting sensitivity adjusting lever, and the like on the side of the seat 13. A main clutch pedal 32 and left and right brake pedals are disposed on the top, and a fertilizer applicator 33 is disposed behind the seat 13.

  The planting unit 4 includes a seedling stage 16, a planting claw 17, a float 34, and the like, and the matting device 10 and the herbicide sprayer 90 are mounted on the planting unit 4. The seedling stage 16 is disposed in a front and rear and low position, and a lower part thereof is supported by the lower guide rail 18 and an upper part of the front surface is supported by the upper guide rail 19 so as to be slidable in the left and right directions. The lower guide rail 18 and the upper guide rail 19 are supported by a planting center case 20 via a frame or the like. A planting case 21 protrudes rearward from the planting center case 20 via a connecting pipe, and a rotary case 22 that rotates in one direction is provided at the rear of the planting case 21. A pair of planting claws 17 and 17 are provided on both sides of the rotary case 22.

In this way, the riding rice transplanter 100 reciprocates (slids) the seedling stage 16 left and right by the lateral feed mechanism as it travels forward, and the planting claws 17, 17... The planting operation is performed continuously while driving and cutting out one seedling for each line.
A lifting link mechanism 27 is connected to the front portion of the planting center case 20 via a rolling fulcrum shaft (not shown). Specifically, the lifting link mechanism 27 includes a top link 25, a lower link 26, and the like. Thus, the planting part 4 is lifted and lowered by the lifting cylinder 28 arranged below the seat 13.

As shown in FIG. 2 and FIG. 3, ribs 85, 85... .. Are formed. That is, the seedling mat placing portion 86 formed between the adjacent ribs 85 and 85 and the seedling mat placed thereon correspond to one line where the riding rice transplanter 100 performs the planting work.
The seedling mat vertical feed mechanism includes a driven roller 37, a drive roller 38, a seedling feed belt 35, and the like. An opening is provided from the lower portion of the seedling mat placing portion 86 to the middle position in the vertical direction, and a driven roller 37 and a driving roller 38 are provided above and below the opening, and the seedling feeding is performed between the driven roller 37 and the driving roller 38. The belt 35 is wound. A large number of protrusions are provided on the surface of the seedling feeding belts 35, 35..., And the belt surface is exposed from an opening provided from the lower portion of the seedling mat placing portion 86 to the vertical middle position.

In such a configuration, while holding the seedling mat by the seedling mat presser mechanism 36 and the seedling feeding belt 35 provided above the vertical feeding mechanism of the seedling mat, while accurately feeding the seedling mat vertically downward, Plant stable seedlings.
Specifically, the lower end of the seedling mat is cut by a certain width and cut by the reciprocating motion of the seedling stage 16 and the cutting operation of the seedlings performed by the planting claws 17, 17... In synchronization with the reciprocating motion. The seedling mats are transported downward and the seedlings are planted in paddy fields. Further, the seedling mat is conveyed downward by the seedling feeding belt 35 of the vertical feeding mechanism when the seedling stage 16 is folded back at the left and right ends.
Then, during this planting operation, by the mat medicine applicator 10 disposed above the seedling mount 16, reliable medicine without spraying unevenness is performed on the seedling mat simultaneously with seedling planting.

Below, the detailed structure of the mat dispenser 10 which is the principal part of this invention is demonstrated using FIG. 1 thru | or FIG.
As shown in FIGS. 1 to 3, the mat dispensing machine 10 is provided on the rear upper side of the seedling mounting table 16 of the riding rice transplanter 100, and the lateral reciprocation of the seedling mounting table 16 and transplanting claws 17. At the same time as the planting drive of 17..., The feeding unit 42 is driven to apply a chemical such as fertilizer or agricultural chemical to the seedling mat. In other words, the mat dispensing device 10 is arranged to face the seedling mat mounting portion 86 of the seedling mounting table 16. The chemicals handled by the mat medicine applicator 10 are mainly formed by granulating powder raw materials, but can also be applied to other granular chemicals (for example, granular chemicals whose surfaces are coated). is there.

  Since the riding rice transplanter 100 of the present embodiment is an eight-row planting rice transplanter, one mat medicine applicator 10 is arranged at the upper left and right centers of the four seedling mat placing portions 86, 86, 86, 86. That is, the mat dispensing machines 10 and 10 are arranged one by one on the left and right sides above the seedling stage 16. This is because the four seedling mat placement units 86, 86, 86, and 86 can be applied with a single mat application device 10.

The mat dispenser 10 in the present embodiment mainly includes a drug hopper 41, a feeding unit 42, a spraying unit 43, and the like.
First, the medicine hopper 41 is a container for storing medicine to be applied to the seedling mat, and a lid 41a is detachably provided on the medicine hopper 41. An operator or the like opens the lid 41 a and replenishes the medicine inside the medicine hopper 41. The lower half of the medicine hopper 41 has a funnel shape, and an opening is provided at the lower end. That is, the medicine stored in the medicine hopper 41 falls to the feeding section 42 below the opening provided in the lower end portion of the medicine hopper 41 by its own weight.

The feeding unit 42 feeds the medicine stored in the medicine hopper 41 to a spraying unit 43 described later by a predetermined amount, and a feeding roll (not shown) rotates through a one-way clutch therein. Contained as possible.
Specifically, as shown in FIGS. 2 and 3, a rod drive case 67 is provided on the rear portion of the planting case 21, the output shaft projects from the rod drive case 67, and the planting claws 17, 17.・ Branch the power to drive Power is transmitted from the output shaft to a feeding arm (not shown) via a lower feeding rod 68, a transmission plate 69, 70, an upper feeding rod 71, etc., and between the feeding arm and the roll shaft 49. The feeding roll 45 is intermittently rotated in one direction through the arranged one-way clutch.

As shown in FIGS. 2 to 4, the spraying unit 43 is connected to the feeding unit 42, guides the medicine fed by the feeding unit 42, and applies the medicine to the seedling mat. The spraying part 43 is mainly composed of a branch member 61, guide hoses 64, 64, 64, 64, spray nozzles 65, 65, 65, 65, and the like.
The branch member 61 is a substantially funnel-like member connected to the lower end of the feeding portion 42, and has four openings at the lower end portion, which are connected to the guide hoses 64, 64, 64 and 64, respectively. It is.

As shown in FIGS. 2 to 4, the guide hoses 64, 64, 64, and 64 are tubular members. The upper ends of the guide hoses 64, 64, 64, and 64 are connected to the lower ends of the branch members 61, and the lower portions thereof are front and rear nozzle stays 51 and 52, which will be described later. Are supported by a hose support member 60 that is connected and fixed to each strip. A spray nozzle 65 is pivotally provided at the lower end of each guide hose 64.
The guide hoses 64, 64, 64, and 64 are supported by the front and rear nozzle stays 51 and 52 in such a manner that the upper ends of the guide hoses 64, 64, 64, and 64 are directed rearward and upward, and the guide hoses 64 and 64 The lower end portions of 64 and 64 are defined so as to face the front and the lower side of the machine body, that is, toward the lower portion of the seedling stage 16.
As shown in FIG. 3, the mat dispensing machine 10 of the present invention is disposed at a substantially central portion of the four seedling mat mounting portions 86, 86, 86, and 86, and is used for 8 strips in this embodiment. In the case of the rice transplanter 100, the two mat medicine applicators 10 and 10 are disposed above the seedling mount 16.

Next, the support structure of the mat medicine applicator 10 will be described with reference to FIGS. 2 to 4.
The support frame 53 is a member for fixing the mat medicine applicators 10 and 10 to the rear upper part of the seedling mount 16 of the riding rice transplanter 100, and mainly includes a base frame 54, a lower support column 55, and an upper support column 56. An upper horizontal frame 57, a front nozzle stay 51, a rear nozzle stay 52, a horizontal nozzle stay 59, and the like.

  The base frame 54 is a member that forms the lower part of the support frame 53, and pivotally supports the lower end portion of the lower support column 55 while standing on the rear upper part of the planting case 21. Specifically, the lower part of the base frame 54 is fixed to the rear upper part of the planting case 21 by bolting or welding or the like, and the lower end of the lower support pillar 55 is pivotally supported in the upper and lower middle part of the base frame 54. . An arc-shaped elongated hole 54b is formed in the upper part of the base frame 54 in the front-rear direction, and the lower part of the lower support pillar 55 is at a position substantially the same as the elongated hole 54b. A screw hole 55b is formed. That is, by passing a screw or the like through the long hole 54b and fastening and fixing the lower support column 55 and the base frame 54, the lower portion of the lower support column 55 is centered within the range of the long hole 54b of the base frame 54. It can be held at an arbitrary inclination (see FIGS. 2 and 4).

  In other words, the lower support column 55 can be swung in the front-rear direction within the range of the long hole 54b, and the mat medicine applicator 10 and the herbicide sprayer 90 can be swung in the front-rear direction. Thus, the mat applicator 10 and the herbicide spreader 90 can be moved to the “working position” with respect to the planting part 4 and the “retracted position” rotated rearward, thereby increasing the space above the rear part of the seedling platform. Thus, maintenance and the like can be easily performed. However, it is also possible to adopt a configuration in which the forward / backward swing range is restricted by a stopper or the like instead of the long hole 54b.

  In the present embodiment, a screw (hereinafter referred to as a knob 62) provided with a grip portion at an end portion in the outside direction of the rice transplanter 100 is used as a screw or the like that penetrates the long hole 54b. And the like, by loosening the knob 62, the base frame 54 and the lower support column 55 are loosened so that the lower support column 55 can swing back and forth with respect to the base frame 54. Conversely, by tightening the knob 62, the mat medicine applicator 10 can be fixed to the traveling unit 1 of the rice transplanter 100.

As shown in FIGS. 2 and 4, a herbicide spreader 90 is attached to the rear portion of the mat dispenser 10.
The herbicide sprayer 90 is composed of an upper herbicide hopper 91, a middle herbicide feed unit 92, a lower herbicide spray unit 93, and the like. Hereinafter, it is an apparatus for spraying herbicides, etc.). Specifically, the herbicide stored in the herbicide hopper 91 is sprayed from the herbicide spraying part 93 to the field through the feeding part 92. The herbicide spreader 90 is driven by a motor (not shown), and the motor can be driven in conjunction with the planting operation in conjunction with the planting operation unit.
Hereinafter, the mounting mechanism of the herbicide spreader 90 to the mat dispenser 10 will be described.

  A mounting frame 94 is fixed to the lower portion of the lower support pillar 55 by a bolt and protrudes rearward. A rear portion of the mounting frame 94 is provided with a pin 95 extending sideways. On the other hand, a latching member 96 is fixed to the front portion of the herbicide spreader 90, and a notch 96c that engages with the pin 95 is formed in the latching member 96. Screw holes 94b and 96b are formed in the mounting frame 94 and the hooking member 96, and screws or the like are screwed into the screw holes 94b and 96b when the herbicide spreader 90 is in a predetermined posture. By doing so, it is possible to firmly fix the herbicide spreader 90 to the mat dispenser 10.

That is, the operator or the like aligns the positions of the screw holes 94b and 96b after engaging the notch 96c of the retaining member 96 fixed to the herbicide sprayer 90 with the pin 95 of the mounting frame 94. Then, a screw or the like can be screwed in and the herbicide spreader 90 can be mounted on the mat medicine applicator 10.
Conversely, the herbicide spreader 90 can be removed from the mat medicine applicator 10 by removing the notches 96c from the pins 95 after removing the screws and the like from the screw holes 94b and 96b. However, the configuration in which the herbicide spreader 90 is attached to and detached from the support frame 53 of the mat powder applicator 10 is not limited. It is also possible to do.

  Thus, in the mat medicine applicator 10 including the medicine hopper 41 in which medicine is stored and the spraying portion 43 that spreads the medicine in the medicine hopper 41 onto the seedling mat on the seedling mount 16, the herbicide or the like is added. Since the herbicide sprayer 90 for storing and spraying is provided, it is possible to spray insecticides and herbicides while spraying chemicals on the seedling mat of the seedling stage 16, that is, spraying fertilizer etc. simultaneously with rice planting And herbicides can be sprayed, work efficiency can be improved, and labor can be reduced.

  In addition, since the herbicide sprayer 90 is detachably attached to the lower rear portion of the support frame 53 that supports the drug hopper 41 and the spray part 43, herbicide spraying does not interfere with planting work and fertilization work. It can be carried out. Moreover, it becomes possible to attach the herbicide spreader 90 using the support frame 53 for attaching the mat medicine applicator 10, and the herbicide spreader 90 is removed from the mat medicine applicator 10 when the herbicide application is not performed. Therefore, the rice transplanter 100 as a whole can be reduced in size and weight. Moreover, since the center of gravity position of the mat dispensing machine 10 equipped with the herbicide spreader 90 is lowered, the stability of the machine body is increased.

As shown in FIGS. 2 to 4, the lower support column 55 and the upper support column 56 are substantially prismatic members. As described above, the base frame 54 is configured such that the lower end portion of the lower support column 55 can swing in the front-rear direction. The lower end of the upper support column 56 is fixed to the upper end portion of the lower support column 55 by welding or the like. The lower support column 55 and the upper support column 56 are formed in a “<” shape in a side view so that the upper support column 56 has a posture in which the upper end portion is substantially above the planting case 21.
A storage stay 63 is erected in the upper and lower substantially central part of the upper support column 56 toward the rear upper side. A screw hole 63b is formed in the rear portion of the storage stay 63. By screwing a screw or a pin together with a screw hole 51c of the front nozzle stay 51 as will be described later, the storage stay 63 and the front nozzle stay 51 are Can be connected. That is, as long as the upper support column 56 can be fixed in a state where the front nozzle stay 51 is moved rearward, it may be directly fixed with a bolt or the like, and the configuration is not limited.

The upper horizontal frame 57 is a substantially prismatic member that is horizontally provided in the left-right direction at the upper end of the upper support column 56. It is possible to further improve the rigidity of the support frame 53 by connecting the upper horizontal frames 57 and 57 respectively corresponding to the adjacent mat dispensers 10 and 10 with a connection frame (not shown).
Then, the mat medicine applicator 10 is attached to the front portion of the upper horizontal frame 57, the mat medicine applicator 10 is attached to the front portion of the support frame 53, and the herbicide spreader 90 is attached to the rear portion of the support frame 53. As a result, the front-rear weight balance is stabilized.

The front nozzle stay 51 and the rear nozzle stay 52 are rod-like members that are arranged in series in a forward direction from the connecting portion of the lower support column 55 and the upper support column 56, and are arranged at the front end portion of the front nozzle stay 51. A horizontal nozzle stay 59 is provided in the horizontal direction. Specifically, the horizontal nozzle stay 59 is fixed to the front end portion of the front nozzle stay 51, and the rear end portion of the rear nozzle stay 52 is fixed to the connecting portion between the lower support column 55 and the upper support column 56 by welding or the like. . Screw holes 51b and 52b are formed in the rear end portion of the front nozzle stay 51 and the front end portion of the rear nozzle stay 52, and both nozzle stays are screwed into the screw holes 51b and 52b. 51 and 52 can be connected and fixed in series.
The front nozzle stay 51 is also formed with a screw hole 51c at the front and rear halfway thereof, and can be screwed into the screw hole 63b of the storage stay 63 as will be described later. However, the front nozzle stay 51 and the rear nozzle stay 52 can be folded at the connecting portion.

Hose support members 60, 60,... Are welded and fixed to the horizontal nozzle stay 59 for each strip of the seedling stage 16, and the guide hoses 64, 60,. The lower part of 64 ... is supported. As shown in FIG. 5, the horizontal nozzle stay 59 is divided in the middle of the left and right sides, that is, the left nozzle stay 59L and the right nozzle stay 59R are rotatably connected. However, in the case of ten-row planting, the horizontal nozzle stay 59 is divided into the center and the left and right sides, and the left and right sides can be rotated.
More specifically, a rotating connecting member 59M is welded to the left end portion of the right nozzle stay 59R, and the rotating connecting member 59M is formed in an inverted “U” shape in a side view, and the rotating connecting member The right end portion of the left nozzle stay 59L is pivotally supported inside 59M so as to be rotatable in the rear horizontal direction.

  And the pin hole 59f * 59r is formed in the left middle part and left rear part of this rotation connection member 59M, and the pin hole 59b is also formed in the right part of this left nozzle stay 59L. That is, the left nozzle stay 59L can be fixed on the extension line of the right nozzle stay 59R by aligning the pin hole 59b of the left nozzle stay 59L with the pin hole 59f of the left middle portion and fitting the pin into both, so that the left nozzle stay 59L can be fixed. By aligning the pin hole 59b of the stay 59L with the pin hole 59r on the left rear part and inserting a pin into both, the left nozzle stay 59L is fixed at a position rotated rearward about the rotary connecting member 59M. It can be done.

Thus, by rotating the left nozzle stay 59L rearward, the guide hose 64 and the spray nozzle 65 can be moved rearward, so that the space behind the seedling stage 16 can be expanded and further supported. By tilting the frame 53 backward, a larger space can be obtained and maintenance of the seedlings on the seedling mounting table 16 can be easily performed.
The stays 50 and 50 are plate-like members projecting forward from the upper horizontal frame 57, and the drug hopper 41 and the feeding portion 42 of the mat dispenser 10 and 10 are fixed to the stays 50 and 50.

Finally, an operation procedure for tilting (moving) the mat medicine applicator 10 backward with respect to the seedling mounting table 16 of the rice transplanter 100 will be described with reference to FIGS. 2, 4, and 5.
First, an operator or the like turns the knob 62 to loosen the tightening between the lower support column 55 and the base frame 54, and the lower support column together with the knob 62 screwed into the lower portion of the lower support column 55. 55 is tilted (rotated) backward along the elongated hole 54b. That is, the state of FIG. 2 is shifted to the state of FIG. When the lower support column 55 tilts rearward, the knob 62 is retightened in the opposite direction, and the lower support column 55 and the base frame 54 are fastened and fixed again.

  Then, the screw is removed from the screw holes 51b and 52b, the connection between the rear part of the front nozzle stay 51 and the front part of the rear nozzle stay 52 is released, and the front nozzle stay 51 is slid backward while the guide hose 64 is bent. Let Then, the screw hole 51c of the front nozzle stay 51 is aligned with the position of the screw hole 63b of the storage stay 63, and the middle part of the front nozzle stay 51 is screwed to the rear part of the storage stay 63 with screws or pins. At this time, as shown in FIG. 4, when the horizontal nozzle stay 59 is configured to be in contact with and fitted into the connecting portion between the rear nozzle stay 52 and the upper support column 56, the horizontal nozzle stay 59 is moved rearward. It is preferable because it is stable in a state.

  By moving the front nozzle stay 51 rearward, the horizontal nozzle stay 59 connected to the front nozzle stay 51 moves rearward, and the horizontal nozzle stay 59 is interposed via the hose support members 60, 60. The guide hoses 64, 64,... And the spray nozzles 65, 65,. As a result, the distance between the front end (the guide hose 64 and the spray nozzle 65) of the mat medicine applicator 10 and the seedling mounting table 16 is widened, so that the operator can easily perform the operation.

  As described above, in the rice transplanter 100 including the traveling unit 1, the planting unit 4 for planting seedlings of the seedling mat in the field, and the mat dispensing machine 10 for spraying the medicine on the seedling mat, the mat dispensing machine 10 The lower end of the support frame 53 that supports the rear end of the traveling unit 1 is supported so as to be able to swing back and forth, and the nozzle stay 51 that supports the spraying unit 43 of the mat medicine applicator 10 can be supported in the vicinity of the support frame 53. As a result, the front nozzle stay 51 can be moved rearward together with the spraying portion 43 (the front end portion of the mat medicine treatment machine), so that the space between the seedling table 16 and the mat medicine treatment machine 10 can be widened. Thus, the operator can easily enter between the seedling table 16 and the mat medicine applicator 10. As a result, even if there is only one worker or the like, it becomes easy to place the seedling mat on the seedling mounting table 16 and to perform maintenance easily.

  Further, the nozzle stays 51 and 52 are divided into front and rear, and the front nozzle stay 51 can be connected to a storage stay 63 fixed to the support frame 53. Since it is possible to move backward, it becomes easy for an operator or the like to place the seedling mat on the seedling mounting table 16 at a low manufacturing cost, and maintenance is also facilitated.

  Then, as shown in FIG. 5, a pin is extracted from the pin holes 59f and 59b of the horizontal nozzle stay 59 so that the left nozzle stay 59L can be rotated, and the left nozzle stay 59L is centered on the rotation connecting member 59M. In this state, the pins are inserted and fixed in the pin holes 59r and 59b. As a result, the end of the left nozzle stay 59L moves rearward, and guide hoses 64, 64, 64 and spray nozzles 65 that are connected to the left nozzle stay 59L via the hose support members 60, 60, 60.・ 65 ・ 65 moves backward. As a result, the space between the front end (the guide hose 64 and the spray nozzle 65) of the mat medicine applicator 10 and the seedling mounting table 16 is widened, so that the operator can easily perform the operation.

  In this way, the horizontal nozzle stay 59 that supports the spraying portion 43 while being supported by the front portion of the nozzle stay 51 is divided into left and right sides, and one side 59L of the horizontal nozzle stay is rotated to the rear of the rice transplanter 100. Since it is connected to the other side 59R so as to be movable, the side portions 43 and 59L of the mat medicine applicator 10 can be moved rearward, so that the seedling stage 16 side portion and the side portions 43 and 59L of the mat medicine device 10 can be moved. It becomes possible to widen the distance between them, and it becomes easy for an operator to enter between the seedling stage 16 side portion and the mat medicine applicator side portion 43 / 59L. It becomes easy to place the seedling mat on the top, and it is easy to perform maintenance.

Then, when performing a rice transplanting operation by the riding rice transplanter 100, the mat medicine applicator 10 and the seedling mounting table 16 are brought upright or rotated by following the work procedure reverse to the above-described operation. It is possible to reduce the distance to the seedling mat, and it is possible to perform accurate drug spraying on the seedling mat by the mat dispenser 10.
That is, the left nozzle stay 59L is rotated forward, the front nozzle stay 51 is moved forward and connected and fixed to the rear nozzle stay 52, and the mat medicine applicator 10 itself is rotated upright. You can do it.

The side view which showed the whole structure of the riding rice transplanter concerning one Example of this invention. The side view which showed the riding rice transplanter rear part. Similarly rear view. The side view which shows the state which tilted the mat | matte medication machine back. The top view which showed the horizontal nozzle stay.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling part 4 Planting part 10 Mat dispenser 16 Seedling stand 41 Drug hopper 42 Drug delivery part 43 Drug spraying part 51 Nozzle stay (front nozzle stay)
52 Rear nozzle stay 53 Support frame 59 Horizontal nozzle stay 63 Storage stay 90 Herbicide spreader 100 Rice transplanter

Claims (3)

A traveling section;
A planting part for planting seedlings of a seedling mat in a field;
In a rice transplanter comprising a mat dispensing machine for spraying a chemical on the seedling mat,
The lower end of the support frame that supports the mat medicine applicator is supported on the rear part of the traveling unit so as to be able to swing back and forth
A rice transplanter characterized in that a nozzle stay that supports a spraying portion of the mat medicine applicator can be supported in the vicinity of the support frame.   2. The rice transplanter according to claim 1, wherein the nozzle stay is divided into front and rear, and the front nozzle stay is connectable to a storage stay fixed to a support frame. The horizontal nozzle stay that supports the spraying part while being supported by the front part of the nozzle stay is divided into left and right,
The rice transplanter according to claim 1 or 2, wherein one side of the horizontal nozzle stay is connected to the other side so as to be rotatable rearward of the rice transplanter.

Images