JP2013128429A - Paddy field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paddy field working machine which has a sowing device and a fertilizing device in a state arranged in the longitudinal direction in a working portion, thereby simplifying the configuration, and which can well sow seeds in a state not scattering seeds in the lateral direction, even when sowing seeds spacedly.SOLUTION: In the paddy field working machine, a working portion (A) is connected to the rear portion of a travel machine frame 3 through a link mechanisms 5 in a state capable of being lifted or lowered and has the sowing device 9 and the fertilizing device 10 in a state arranged in the longitudinal direction, and the sowing device 9 and the fertilizing device 10 are arranged in a state that the upper end portion of a fertilizer-storing portion 56 in the fertilizing device 10 is placed below the upper end portion of a seed-storing portion 27 in the sowing device 9.

Description

  According to the present invention, a working unit is connected to a rear part of a traveling machine body through a link mechanism so as to be movable up and down, and the working unit feeds seeds stored in a seed storage unit from a plurality of seed feeding units and supplies the seeds to a field. The present invention relates to a paddy field machine configured to include a device and a fertilizer that feeds granular fertilizer stored in a fertilizer storage unit from a plurality of fertilizer supply units and supplies the fertilizer to a field.

  In the above-described riding type direct sowing machine as an example of the paddy field work machine, conventionally, a working unit connected to a rear part of the traveling machine body through a link mechanism so as to be movable up and down is provided with a seeding device and a fertilizer device arranged in a front-rear direction. In addition, there has been a configuration in which the upper end portion of the seed storage unit in the seeding device and the upper end portion of the fertilizer storage unit in the fertilizer application device are provided at substantially the same height (see, for example, Patent Document 1). In Patent Document 1, the seeding device sends seeds fed from a seed hopper as a seed storage unit to a grooving device provided in the leveling float via a curved hose so as to perform seeding. It is configured.

  In addition, the working unit is not equipped with a sowing device and a fertilizer device arranged in the front-rear direction, but in the case where the working unit is equipped with a sowing device, the seeds fed from the seed feeding unit are sent vertically downward without using a hose. There is a configuration in which a path is formed so that a plurality of seeds are collected and spotted so as to be supplied to the field at intervals along the traveling direction of the aircraft (see, for example, Patent Document 2).

No. 61-61216 (Japanese Utility Model Publication No. 62-172308) JP 2011-130735 A

  The said conventional structure (structure of patent document 1) can achieve simplification of a structure by setting it as the structure which equips the working part with the sowing apparatus and the fertilizer in the state located back and forth. For example, in the case where one of the seeding device and the fertilizer is provided on the traveling machine body side, the powder material fed from the device provided on the traveling machine body side is set at the powder body supply position set in the working unit. However, there is a disadvantage that the structure becomes complicated because a long guide hose or a blower device for forcible transport is required, and in contrast to this, there is a disadvantage in that the seeding device is in the working part. And the fertilizer application device in a state where they are lined up and down, there is no need for a device for guiding and supplying the granular material over a long distance from the traveling machine body side to the granular material supply position set in the working unit. The configuration can be simplified.

  By the way, when sowing in a field, it is possible to grow a plurality of seeds as one strain by performing spot sowing as described in Patent Document 2, and it is well-ventilated and sunny by separating the strains. Crop can be grown in the state. However, in what is provided with a sowing device and a fertilizer device in a state where the working unit is arranged in the front and rear, in such a conventional configuration, since the seed to be fed is scattered in a curved hose, There are many cases where it is not possible to satisfactorily supply a plurality of seeds, and there is a possibility that spot seeding cannot be performed satisfactorily.

  Therefore, in order to eliminate this inconvenience, a path for feeding the seeds fed from the seed feeding unit vertically without using a hose is formed in the above-described conventional configuration in which the working unit is arranged with the sowing device and the fertilizer in front and back. Although it is conceivable to adopt the configuration to do, in the above-described conventional configuration, since the upper end portion of the seed storage portion and the upper end portion of the fertilizer storage portion are configured to be provided at substantially the same height, There were the following disadvantages.

  That is, in the conventional configuration, since the upper end portion of the seeding device and the upper end portion of the fertilizer application device are provided in a state where they are aligned in the front-rear direction, the seed feeding unit in the seeding device is removed from the field scene. There will be a distance between the seeds being fed out and falling to the field scene until the seeds fed out from the seed feeding part are fed to the field. There is a possibility that a plurality of seeds may not be supplied satisfactorily because the seeds are spread in the lateral direction.

  In the above conventional configuration, when fertilizer is replenished to the fertilizer reservoir, the upper end portion of the seeding device and the upper end portion of the fertilizer application device are at a high position at substantially the same level. For example, the fertilizer storage portion is stored in a container such as a storage bag. The fertilizer that has been used must be lifted and replenished to a high position, which has the disadvantage of making the work difficult.

  An object of the present invention is to provide a working unit with a sowing device and a fertilizer device arranged in a front-and-rear direction so that the configuration can be simplified. It is in the point which provides the paddy field machine which becomes possible to make it possible.

  In the paddy field work machine according to the present invention, a work part is connected to a rear part of a traveling machine body through a link mechanism so as to be movable up and down, and the work part feeds seeds stored in a seed storage part from a plurality of seed feeding parts. A seeding device that supplies to the field and a fertilizer that feeds the granular fertilizer stored in the fertilizer storage unit from the plurality of fertilizer supply units and supplies the fertilizer to the field are arranged in the front-and-rear state. The first characteristic configuration is that the fertilizer application device and the seeding device are arranged in a state where the upper end portion of the seed storage unit in the seeding device is located below the upper end portion of the fertilizer storage unit in the fertilizer application device. It is in the point.

  According to the first characteristic configuration, since the fertilizer and the seeding device are deployed in a state where the upper end of the seed reservoir in the seeding device is located below the upper end of the fertilizer reservoir in the fertilizer, sowing The device can be provided at a position close to the field scene lower than the fertilizer application, and seeds stored in the seed storage unit are fed to the field scene after being fed from the seed feeding unit even when spot seeding is performed. It is possible to reduce the distance between the two seeds and reduce the lateral dispersion of the seeds before they fall to the field. It becomes possible.

  Moreover, since the upper end part of a fertilizer storage part is located above the upper end part of a seed storage part, when replenishing fertilizer to a fertilizer storage part, the fertilizer stored in containers, such as a storage bag, is seed storage. It becomes easy to replenish fertilizer to the fertilizer storage part in the state of being placed on the upper part of the part, and the fertilizer replenishment work can be easily performed. In addition, in this type of paddy field machine, fertilizer is consumed much and the frequency of supplying fertilizer to the fertilizer storage part is large, but when performing such fertilizer supply work, storage bags etc. The fertilizer replenishing work can be performed in a state where the fertilizer stored in the container is temporarily placed on the upper part of the seed storage part and the labor burden on the operator is reduced.

  Therefore, it is possible to simplify the configuration by providing the working unit with the sowing device and the fertilizer device arranged in the front and back, so that the work can be satisfactorily performed even when spotting is performed. It has become possible to provide paddy field machines that can do this.

  The 2nd characteristic structure of this invention exists in the point by which the said fertilizer and the said sowing apparatus are arranged in the state which the said fertilizer is located in the body front side rather than the said sowing apparatus.

  According to the second characteristic configuration, the fertilizer is positioned on the front side of the machine body relative to the sowing device, and the upper end of the seed reservoir in the sowing device is positioned below the upper end of the fertilizer reservoir in the fertilizer. Therefore, since the fertilizer and the sowing device will be deployed, when the worker who is on the traveling aircraft body looks at the rear of the aircraft, the sowing device located on the rear side of the aircraft is in a low position, The rear view is good and it becomes easy to visually confirm the situation of the field after sowing and fertilization.

  In addition, as described above, the fertilizer is frequently supplied with fertilizer in the fertilizer reservoir, but since the fertilizer is located on the front side of the aircraft, that is, on the side close to the traveling aircraft, it is on the traveling aircraft. When an operator performs a fertilizer replenishment operation, the replenishment operation is facilitated.

  A third characteristic configuration of the present invention is a medicine that is fed from the medicine feeding section and sprayed to the field with the powdered medicine stored in the medicine storage section in a state of being located on the rear side of the machine body with respect to the seeding device and the fertilizer application apparatus. The spraying device is provided.

  According to the third characteristic configuration, since the medicine spraying device is provided in a state of being located on the rear side of the machine body relative to the seeding device and the fertilizer application device, the powdered medicine is applied to the field that has been seeded and fertilized by the drug spraying device. Can be sprayed.

  This drug spreader does not supply powder particles in a row for each of the plurality of lines like a seeding device or a fertilizer application device, but sprays a drug on a predetermined work area of a field. Compared to the fertilizer application, the structure is simple, small and light, and even if this medicine spraying device is provided on the rear side of the machine body compared to the seeding device and fertilizer application, the weight balance in the front and rear of the working part is not greatly lost. There is little risk of affecting sowing and fertilizing operations.

  4th characteristic structure of this invention is from the upper end part of the upper part of the said chemical | medical agent storage part in the said chemical | medical agent spraying apparatus located in the body back side among the seed storage part in the said sowing apparatus and the fertilizer storage part in the said fertilizer application apparatus. They are also located in the upper position.

  According to the 4th characteristic composition, since the upper end part of a medicine storage part is arranged in the state located above the upper end part of what is located in the body rear side among a seed storage part and a manure storage part, a medicine spreader is provided. It will be located at a higher position than the one located on the front side of the machine (seeding device or fertilizer), and since the drug will be sprayed from a higher position, it will be easier to spread the drug evenly toward the field. There is little possibility that the medicine spraying device located at the end will be damaged by contact with a bag or the like.

  According to a fifth characteristic configuration of the present invention, on both the left and right sides of the working unit, markers capable of changing a posture over an action posture for drawing a running index on a farm scene and a retracted posture for retreating toward the body side are provided. And each of the said fertilizer is in the point arrange | positioned so that it may be located in the downward side rather than the upper end part of the said marker in the said storing attitude | position.

  According to the fifth feature configuration, when the marker is changed to the action posture, the travel indicator in the next work process can be drawn on the farm scene, and when the marker is not used, the posture is changed to the retracted posture that retreats toward the body side. Let In order to draw a running index in the next work process, this marker always has the same distance from the position supported by the working unit to the marker, and the height when the posture is changed to the retracted position is determined automatically. become.

And since each of a seeding device and a fertilizer is provided in the state where it is located in the lower part rather than the upper end part when a marker is in a storing posture, a seeding device and a fertilizer should be provided in a low position. Thus, the center of gravity of the entire working unit can be lowered.
Moreover, it becomes possible to store a marker in the state with little possibility of interfering with a sowing apparatus and a fertilizer application apparatus.

  The sixth characteristic configuration of the present invention is that the upper lid of the fertilizer storage part in the fertilizer application is swingable and openable around a laterally turning fulcrum provided at the end opposite to the seeding device existence side. It is in the point provided in.

  According to the sixth feature, when the fertilizer stored in a container such as a storage bag is placed on the upper side of the seed storage unit of the seeding device, when the fertilizer is supplied to the fertilizer storage unit, the upper lid exists in the seeding device. Since it swings open and close around a horizontal rotation fulcrum provided at the end opposite to the side, when the upper lid is switched to the open state, the seeding device side is opened and it is easy to supply fertilizer It becomes.

  For example, when the fertilizer is provided in a state of being located on the front side of the aircraft relative to the sowing device, it swings and opens around a laterally turning fulcrum provided at the end of the front of the aircraft, and from the rear side. When supplying a fertilizer, it will become easy to supply in the state which mounted the fertilizer on the upper side of the seed storage part located in the back side.

It is a whole side view of a paddy field machine. It is a whole side view of a paddy field machine. It is a side view of a working part. It is a top view which shows the frame structure of a working part. It is a top view which shows the frame structure of a working part. It is a rear view of a sowing apparatus. It is a rear view of a fertilizer applicator. It is a partially notched top view which shows a transmission structure. It is a partially cutaway side view near the rolling shaft core. It is a side view which shows the support structure of a groove cutter. It is a rear view of the horizontal one side part of a working part. It is a side view which shows the open state of a cover body. It is a side view which shows the open state of the cover body of another embodiment. It is a side view which shows the open state of the cover body of another embodiment. It is a side view of the traveling machine body front part of another embodiment.

Hereinafter, a paddy field working machine according to the present invention will be described with reference to the drawings.
〔overall structure〕
As shown in FIG. 1, a driving seat 4 is provided at the center of a traveling machine body 3 having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2, and a link mechanism 5 is provided at the rear end of the traveling machine body 3. A paddy field work machine is configured by connecting the working parts A so as to be movable up and down. In the vicinity of the driver's seat 4, there are provided a steering handle 6 for steering the left and right front wheels 1, a traveling speed change lever 7, an operation lever 8 for performing a lifting operation of the working unit A, and the like.

  As shown in FIG. 1 to FIG. 3, the working unit A includes a seeding device 9 that performs four surface seeding on a field scene, a fertilizer application device 10 that fertilizes granular fertilizer on a field scene, and a field scene. On the other hand, a medicine spraying device 11 for spraying herbicides and the like, a leveling float 12 for leveling the field scene to be worked, a marker 13 for drawing a travel index for the next travel distance adjacent to the work travel, a field In this configuration, a groove cutter 14 and the like for forming a groove for drainage are provided.

  In the working part A, the fertilizer 10 is located closest to the front of the machine body, the seeding device 9 is located on the rear side of the machine of the fertilizer 10, and the drug spraying device 11 is located on the rear side of the machine of the sowing apparatus 9. As such, they are arranged in a state where they are arranged in the front-rear direction.

  A traveling transmission system is provided that transmits the driving force from the engine 15 mounted on the front portion of the traveling machine body 3 to the front wheels 1 through the transmission case 16 and to the rear wheels 2 through the rear wheel driving case 17. . Further, a work transmission system is provided that transmits the driving force from the transmission case 16 to the external output shaft 18 and further transmits the driving force from the external output shaft 18 to the feed case 19 in the working section A.

  As shown in FIG. 1, the link mechanism 5 includes an upper link 5a and a left and right lower links 5b whose front ends are swingably supported with respect to the rear end of the traveling machine body 3, and at the rear ends thereof. A vertical link 5 c is provided, and the rear end portion is moved up and down by the operation of the hydraulic cylinder 20. The working portion A is supported at the lower end position of the vertical link 5c so as to be swingable about the rolling shaft core X in the front-rear orientation.

  As shown in FIG. 9, in the working unit A, a feed case 19 including an input shaft 21 to which power is transmitted from the external output shaft 18 is at a rotation fulcrum portion 22 provided at a slightly higher position than the input shaft 21. The vertical link 5c is supported so as to be swingable about the rolling axis X in the front-rear orientation.

As shown in FIGS. 5, 7, and 8, left and right lateral cylindrical transmission cases 24 having left and right lateral transmission shafts 23 are fixedly connected to the left and right sides of the feed case 19, and the left and right lateral cylinders are further connected. A front-rear transmission case 26 in which a transmission chain 25 is housed is fixedly connected to the lateral outer side end portion of the transmission case 24.
And a transmission system is comprised so that motive power may be transmitted to the sowing apparatus 9 and the fertilizer application | coating apparatus 10 from the horizontal transmission shaft 23 in this front-back transmission case 26, However, A specific transmission structure is mentioned later.

  As shown in FIG. 8, the front and rear transmission cases 26 on both the left and right sides are closed by connecting a thick and rigid flat base member 26 </ b> A and a lid member 26 </ b> B that is bent in a substantially bowl shape. Further, the horizontal cylindrical transmission case 24 is flange-connected to the base member 26A with a seal member interposed therebetween. The front / rear transmission case 26 has sufficient support strength, and functions as a front / rear support frame that supports the seeding device 9 and the fertilizer application 10.

  That is, the feed case 19 that is swingably supported around the rolling axis X with respect to the vertical link 5c, the left and right lateral tubular transmission cases 24, and the left and right front and rear transmission cases 26 connected thereto. Is provided with a function as a support frame for supporting the working part A, and is configured to support various devices provided in the working part A.

  Although not described in detail, the traveling machine body 3 includes a lifting control device (not shown) that controls the hydraulic cylinder 20 so as to maintain the lifting position of the leveling float 12 at a target value. By performing the elevation control, the seeding device 9 can follow the field scene regardless of the amount of subtraction of the front wheel 1 or the rear wheel 2 with respect to the field scene. Further, when the traveling machine body 3 is tilted in the left-right direction, the working unit A rolls around the rolling axis X described above, thereby maintaining the posture in which the leveling float 12 of the working unit A is brought into contact with the field scene. It is also possible.

  As shown in FIG. 5, the leveling float 12 is integrally formed so as to extend over substantially the entire width of the working portion A. The horizontally long float main body 12 </ b> A and the left and right center of the float main body 12 </ b> A are formed. It consists of a front overhanging portion 12B extending forward from the location and a pair of left and right rear overhanging portions 12C extending rearward from two locations in the left-right direction of the float body portion 12A. The forward projecting portion 12B is projected forward from the left and right center position of the front end of the float main body portion 12A, and has a function as a sensor float used for raising / lowering control of the working portion A.

[Seeding equipment]
The seeding device 9 is configured to perform seeding for four strips on a field scene leveled with the leveling float 12 using a seed pod that has been subjected to iron coating processing as a seed to be seeded. Specifically, it is configured to perform so-called spot sowing in which a plurality of seeds are sown at intervals in the front-rear direction. And in this sowing apparatus 9, the surface sowing to the field scene is implement | achieved, suppressing a bird damage by using the seed vat with which the iron coating process was performed.

  As shown in FIG. 6, the seeding device 9 is provided with two seed hoppers 27 as seed storage units for storing seeds for two strips, and two seed hoppers 27 are added so that seeds are fed out from each seed hopper 27. Four seed feeding sections 28 are provided, and a guide cylinder 29 is provided for guiding seeds fed from the various child feeding sections 28 directly below in a state where the influence of wind is suppressed. As will be described later, the transmission system is configured to drive the feeding roll 30 of the seed feeding unit 28 by the power transmitted from the traveling machine body 3.

  As shown in FIG. 3, the four seed feeding sections 28 are provided on the rear side of the leveling float 12 that comes in contact with the field scene in a plan view and are not overlapped with the leveling float 12. In other words, the leveling float 12 is provided on the rear side of the body of the float main body 12A and on the left and right sides of each of the pair of left and right rear projecting portions 12C, and is fed from the feeding roll 30 provided therein. The seeds can be dropped and supplied directly to the field scene by their own weight without interfering with the leveling float 12. The feeding roll 30 is rotated by the driving force transmitted from the traveling machine body 3 and is configured to feed seeds in a form in which the seeds received in the recesses are dropped by their own weight each time the rotating roll 30 rotates by a predetermined amount. .

  As shown in FIG. 6, the seed hopper 27 is provided with an openable / closable lid 31 at the upper part, and two funnel-shaped parts 32 are formed at the lower part. The seed feeding part 28 is provided for each funnel-shaped part 32. Is connected. The seed hopper 27 and the lid 31 are formed of a transparent or translucent resin so that the remaining amount of seed can be visually confirmed. And as shown in FIG. 2, the seed hopper 27 is provided in the state which overlaps with the leveling float 12 partially in planar view.

As shown in FIG. 6, the guide tube 29 is disposed on the lower side of the feeding roll 30 and has a constricted shape that becomes narrower toward the lower side in the front-rear direction, and as shown in FIG. It is comprised by the plate body formed in the planar view substantially U shape open | released, and it is comprised so that the seed pod drawn out from the supply roll 30 in the state open | released in the up-down direction can be dropped below. Yes.
The guide tube 29 is configured to be held at the lower end of the seed feeding portion 28 by the lock lever 33 and to be separated from the lower end of the seed feeding portion 28 by operating the lock lever 33. In addition, a cover 34 is detachably provided on the rear surface side of the seed feeding portion 28. By removing the cover 34, the feeding roll 30 is exposed to perform maintenance.

[Seeding device drive structure]
As shown in FIG. 8, power is transmitted from the front / rear external output shaft 18 to the lateral input shaft 36 via the bevel gear 35 in the feed case 19 via the input shaft 21 provided at the lower position of the rolling shaft core X. Power is transmitted from the lateral input shaft 36 to the lateral transmission shafts 23 on the left and right sides located on the same axis via the transmission chain 37 and the individual clutches 38, and further, the lateral sides of the lateral transmission shafts 23 on the left and right sides. The transmission system is configured such that power is transmitted from the outer side end portion to the pair of right and left seeding drive shafts 41 via the transmission chain 25.

  Then, as shown in FIG. 4, the pair of drive gears 42 attached to the left sowing drive shaft 41 and the pair of driven gears 44 attached to the roll shafts 43 of the two left feeding parts are respectively bitten. The transmission system is configured to drive and rotate the feeding rolls 30 of the two seed feeding units 28 on the left side by the power of the sowing drive shaft 41 in conjunction with each other. Similarly, between the right sowing drive shaft 41 and the two right seed feeding portions 28, the feeding roll 30 of the two seed feeding portions 28 is interlocked with the driving gear 42 and the driven gear 44. The transmission system is configured to rotate the drive.

  That is, the feeding rolls 30 in the four seed feeding units 28 are rotationally driven by the power transmitted from the traveling machine body 3 side to the input shaft 21 via the external output shaft 18 facing forward and backward, so that seed pods are supplied to the field. It is configured to be able to. When the left and right side strip clutches 38 are joined together and switched to the state, all of the feeding rolls 30 in the four seed feeding portions 28 are rotationally driven, so that seeding for four rows can be performed. Then, when either the left or right strip clutch 38 is switched to the disengaged state, a state in which only the two left seed feeding portions 28 are driven and a state in which only the two right seed feeding portions 28 are driven are selected. Can appear.

[Support structure of sowing equipment]
As shown in FIG. 4 and FIG. 6, for the front and rear transmission case 26 on both the left and right sides, seeding is performed via a pair of left and right brackets 46 that are fastened and connected to the flange 45 at the upper portion of the rear part of the machine body. A rectangular tube-shaped seeding frame 47 extending along the machine body width direction of the device 9 is supported in a fixed state.
As shown in FIG. 4, the case portions 48 of the four seed feeding portions 28 are fixed to the sowing frame 47 by bolts, and are also supported by the support brackets 49 connected to the sowing frame 47. A roll shaft 50 is rotatably supported. In this way, the four seed feeding portions 28 are stably supported by the sowing frame 47 in a state where the feeding operation is possible.

  As shown in FIG. 4, a U-shaped supporting member 51 in a plan view is connected to each of the front and rear transmission cases 26 on both the left and right sides in a state where a U-shaped support member 51 is extended downward. A pair of left and right swing fulcrum brackets 52 provided on the leveling float 12 are supported on the lower ends of the pair of left and right support members 51 so as to be swingable around a lateral axis. The front side of the leveling float 12 is supported by a suspension support mechanism 53 so as to be lifted and lowered within a predetermined range. The suspension support mechanism 53 is provided with a spring 54 that can adjust the biasing force on the lower side of the leveling float 12.

  As shown in FIGS. 4 and 5, the rear side connecting member 55 is provided in a state of being laid over the support members 51 on both the left and right sides. The rear side connecting member 55 is made of a round pipe material, and is configured such that the left and right side ends are flattened and bolted to the rear surfaces of the left and right support members 51. Further, a groove cutter 14 is attached to the central portion of the rear side connecting member 55 in the width direction of the body.

  The grooving device 14 is made of a plate material bent in a V shape when viewed from the front-rear direction of the machine body, and is provided in a state of projecting downward greatly from the ground contact surface of the leveling float 12. Accordingly, a deep groove can be formed in the field scene. As shown in FIG. 10, the groove cutter 14 is supported by a U-shaped bracket 92 fixed to the rear side connecting member 55 so as to be rotatable around the horizontal axis P, and is lowered by a tension spring 93. And is held in a predetermined posture by a stopper 94. Thus, it is comprised so that a groove | channel can be created in a farm field in the state which can be evacuated upwards.

  As shown in FIG. 3, the rolling axis X is low so that the working unit A can follow the farm field while reducing the lateral displacement of the working unit A even when the traveling machine body 3 is tilted in the left-right direction. Set to position. Further, as shown in FIG. 3, the four seed feeding portions 28 in the seeding device 9 are provided in a state of being positioned at a height substantially equal to the rolling axis X. Thus, by setting the relative positional relationship so that the height of the rolling axis X and the height of the seed feeding portion 28 are substantially equal, the seed feeding portion 28 is also inevitably disposed at a low level. Has been.

  As a result, even when the working unit A rolls due to the traveling machine body 3 tilting in the left-right direction, the lateral displacement of the seed feeding unit 28 is suppressed, and thereby the sowing position in the lateral direction is controlled. The variation is suppressed. Furthermore, from such an arrangement, the distance between the feeding roll 30 and the field scene is shortened, not only suppressing the spread of seed pods when surface spot sowing, but also lowering the center of gravity by lowering the seed hopper 27. Can do.

[Fertilizer]
As shown in FIG.4 and FIG.7, the fertilizer application apparatus 10 is provided with two fertilizer hoppers 56 as a fertilizer storage part which stores the fertilizer for two strips, and it is 2 respectively so that fertilizer may be let out from each fertilizer hopper 56. A total of four fertilizer feeding sections 57 are provided, and each fertilizer is configured to include four fertilizer hoses 58 that guide the fertilizer fed from each fertilizer feeding section 57, and the fertilizer guided down by the fertilizer hoses 58. A grooving device 59 for creating a groove for supply in a field scene and an embedding guide body 60 for embedding fertilizer supplied in the groove are provided.

  As shown in FIGS. 3 and 5, the grooving device 59 includes a grooving tool 61 for cutting a groove in a farm scene and a fertilizer guide for guiding the fertilizer fed into the groove created by the grooving tool 61. 62. The groove cutting tool 61 is formed in a triangular shape in a side view and a tapered shape (a wedge shape) in a plan view, and is downward from the bottom surface at four locations that are appropriately spaced in the body width direction of the float main body 12A in the leveling float 12. Are connected in a protruding state. A rubber-made bellows cylindrical connection member 63 is attached to the upper portion of the fertilizer guide 62, and a fertilizer hose 58 is inserted into the connection member 63.

  As with the seed hopper 27, the fertilizer hopper 56 is provided with an openable / closable lid 64 at the upper portion, two funnel-shaped portions 65 are formed at the lower portion, and a fertilizer feed-out portion for each funnel-shaped portion 65. 57 is connected. The fertilizer hopper 56 and the lid 64 are formed of a transparent or translucent resin so that the remaining amount of the fertilizer can be visually confirmed.

  As shown in FIG. 12, the lid body 64 is supported so as to be swingable and openable around a laterally rotating pivot provided at the end of the front side of the machine body (the side opposite to the seeding device presence side). The fertilizer hopper 56 and the lid 64 are made of a transparent or translucent resin so that the remaining amount of fertilizer can be visually confirmed.

  The fertilizer feeding unit 57 is configured to include a feeding roll 66 that is rotationally driven around the horizontal axis and has a plurality of recesses (not shown) for receiving fertilizer on the outer periphery. The fertilizer is rotated by the driving force transmitted from the traveling machine body 3 and the fertilizer received in the recess is sequentially delivered each time it rotates.

  And as shown in FIG. 3, the four fertilizer supply parts 57 in the fertilizer applicator 10 are provided in the state located in the upper side rather than the rolling axial center X. As shown in FIG. Moreover, this fertilizer application apparatus 10 is provided in the state which overlaps with the leveling float 12 in planar view.

[Drive structure of fertilizer application equipment]
As shown in FIG. 7, a fertilization drive shaft 67 that rotationally drives the feeding roll 66 of each fertilizer feeding section 56 is formed in a hexagonal cross section, and is rotated in a state of rotating integrally with the two right and left feeding rolls 66 and left and right. It is provided in a state of being divided into two. As shown in FIG. 3 and FIG. 7, a swing operation arm 68 is provided in the middle of the longitudinal direction of the fertilization drive shaft 67 on both the left and right sides via a one-way clutch so as to be integrally rotatable. The swing end of the arm 68 and the rotary arm 69 attached to the shaft end of the lateral transmission shaft 23 on both the left and right sides are interlocked and connected via a push-pull rod 70.

  According to this configuration, when the rotary arm 69 rotates with the rotation of the lateral transmission shaft 23, the swing operation arm 68 is reciprocally swung within a predetermined range via the push-pull rod 70, and the fertilization drive shaft 67 is placed. The fertilizer is rotated by a fixed amount, and the fertilizer is sequentially fed by the fertilizer feeding unit 57, and the fertilizer fed from the fertilizer feeding unit 57 is supplied to the farm scene through the fertilizer hose 58.

  That is, the feed rolls 66 in the four fertilizer feed portions 57 are rotationally driven by the power transmitted to the input shaft 21 from the traveling machine body 3 through the external output shaft 18 facing forward and backward, so that the fertilizer can be supplied to the field. It is configured to be able to.

  Further, similarly to the seeding device 9, by switching on and off each of the left and right strip clutches 38, it is possible to switch between a state in which fertilization for four strips and a state in which fertilization for two strips is performed. In other words, when the left and right side strip clutches 38 are joined together and switched to the state, all of the feeding rolls 66 in the four fertilizer feeding sections 57 are rotationally driven, and four strips of fertilizer can be applied. Then, when either the left or right line clutch 38 is switched to the disengaged state, two lines of fertilizer can be applied, and only the left two fertilizer feeding parts 57 are driven and the right two fertilizers A state in which only the feeding unit 57 is driven can be selectively displayed.

[Support structure of fertilizer application equipment]
Similar to the seeding device 9, the fertilizer application 10 is configured to be supported by front and rear transmission cases 26 on the left and right sides. That is, as shown in FIGS. 4, 5, and 7, the front and rear transmission cases 26 on both the left and right sides are coupled to the flange portion 45 at the upper portion of the front portion of the machine body and are connected upward. A vertically oriented support frame 71 is provided in an extended state.

  In the vertical support frame 71, a lower base end support portion 72 is coupled to the flange portion 45 together, and a column portion 73 is erected in a state of being integrally fixed from the base end support portion 72. It has a configuration. A fertilization frame 75 as a second cylindrical device frame extending in the horizontal direction of the body of the fertilizer application device 10 is supported in a fixed state on the upper portions of the vertical support frames 71 on both the left and right sides. .

  As shown in FIG. 7, the upper side portion of the fertilizer feeding case 57a in each of the four fertilizer feeding portions 57 is fixed to the fertilizer frame 75 by bolt connection, and the fertilizer hopper 56 is supported by the fertilizer feeding case 57a. The upper portion of the fertilizer hose 58 is supported by the fertilizer feeding case 57a. That is, the entire fertilizer application apparatus 10 is configured to be supported by the front-rear transmission case 26 on the left and right sides via the fertilization frame 75 and the vertical support frames 71 on the left and right sides.

  As shown in FIG. 4, a pair of left and right support brackets fixedly attached in a state of projecting toward the front side of the machine body at a connecting portion (an example of both left and right portions) of the pair of left and right vertical support frames 71 of the fertilizer application frame 75. A pair of left and right balance springs 77 that stretch and urge the left and right inclined postures of the working unit A to the neutral state are stretched across each of 76 and the vertical link 5 c in the link mechanism 5.

  As shown in FIGS. 1 and 3, the fertilizer application device 10 and the seeding device 9 are deployed in a state where the upper end portion of the fertilizer hopper 78 in the fertilizer application device 10 is located above the upper end portion of the seed hopper 27 in the seeding device 9. Has been. With this configuration, when fertilizer is replenished to the fertilizer hopper 78 from the rear side of the machine body, the replenishment work can be performed in a state where the fertilizer packed in the bag is once placed on the upper portion of the seed hopper 27. The replenishment work can be easily performed.

[Drug spraying device]
As shown in FIG. 3, the medicine spraying device 11 includes a medicine hopper 78 in which medicines such as herbicides in the upper position are stored, and a body case 79 is provided below the medicine hopper 78. In addition, the feeding mechanism 80 driven by an electric motor or an electromagnetic solenoid so as to feed out the powdery medicine stored in the medicine hopper 78, and the electric motor driven so as to scatter the medicine fed from the feeding mechanism 80. And a diffusion blade 81.

  The medicine hopper 78 is provided with an openable / closable lid 78A, and as shown in FIG. 12, the lid 78A swings around a lateral rotation fulcrum provided at the end on the front side of the machine body. It is supported freely. The medicine hopper 78 is made of a transparent resin material so that the amount of medicine stored inside can be visually confirmed.

  The medicine spraying device 11 is arranged above the seeding device 9 so that the medicine can be sprayed in a region corresponding to the seeding width (4 widths), and a main body case 79 sets a guide direction for determining the medicine spraying direction. Is done. Further, the entire medicine spraying device 11 is disposed behind the leveling float 12 so that the front end of the main body case 79 is displaced rearward relative to the rear end of the leveling float 12 in plan view. With this arrangement, even when the medicine is sent vertically downward from the front end position of the main body case 79, the medicine does not get on the leveling float 12, and the medicine is applied to the region in the lateral direction corresponding to the sowing width. Even spraying without waste is possible.

  The drug spraying device 11 is configured to perform drug spraying by electrically driving the feeding mechanism 80 and the diffusion blade 81 by operating a switch (not shown) provided in the traveling machine body 3. Moreover, although not shown in the figure, the structure is controlled so that the medicine is not sprayed in a non-working state in which seeding is not performed, such as when traveling is stopped.

[Support structure of drug spraying device]
As shown in FIGS. 3 and 4, a seeding frame 47 that extends along the width direction of the machine body and a central longitudinal frame 82 that connects the center parts of the fertilization frame 75 in the width direction of the machine body along the front-rear direction are seeded. It is provided in a state of projecting greatly toward the rear side of the machine body from the frame 47, and the medicine spraying device 11 is detachably supported at the projecting side end.

  That is, the center front-rear frame 82 is made of a round pipe material, and the base end side is bent in the front-rear direction and the rear end side is bent downward, and the plate-like mounting portion 83 in the vertical position is connected to the rear end. ing. A medicine spraying device 11 is detachably attached to the plate-like attachment portion 83 by a buckle mechanism 84. And as shown in FIG.1 and FIG.3, they are arrange | positioned in the state which the upper end part of the chemical | medical agent hopper 78 in the chemical | medical agent spraying apparatus 11 is located above the upper end part of each of the seed hopper 27 and the fertilizer hopper 56. .

[Support structure of marker]
As shown in FIG. 11, for each of the front and rear transmission cases 26 on both the left and right sides, the base end side attachment portion 85 a of the marker support frame 85 is coupled to the flange portion 45 at the front side of the machine body. Yes. The base end side attachment portion 85a is connected to the flange portion 45 of the front-rear transmission case 26 together with the base end side support portion 72 of the vertical support frame 71. That is, the base end side attachment portion 85 a of the marker support frame 85 is formed of a plate material, and is fastened and connected to the flange portion 45 at both upper and lower side portions, and the base end side support portion 72 of the vertical support frame 71. The one side portion is coupled to the flange portion 45 at the upper side portion of the proximal end side attachment portion 85a.

  As shown in FIG. 5 and FIG. 11, the frame main body 85b of the marker support frame 85 is provided in a state of extending from the base end side mounting portion 85a toward the outer side on the side of the machine body. A structure in which the marker 13 is swingably supported around the axial center in the front-rear direction through the support bracket 86 at the side end portion over the action posture in which the marker 13 draws the running index in the field scene and the retracted posture in which the marker 13 is retracted toward the body side. It has become.

  The marker 13 is supported by the marker support frame 85 in a state in which the marker 13 is rotated and urged toward the action posture by the tension spring 87 and is contacted and regulated by the support bracket 86 in the action posture protruding outward. ing. Although the detailed linkage mechanism of the marker 13 is not shown, when the working unit A is raised to a high position for non-working, the marker 13 is pulled through the wire 88 to switch to the retracted position, and the working unit A is used for working. When lowered to the lower position, the operation posture is switched by the urging force of the tension spring 87.

  As shown in FIGS. 3, 4, and 11, a marker holding portion 89 for holding the marker 13 in the retracted posture is extended from the fertilization frame 75 even when the working portion A is at a low working position. It is prepared in the state. The marker holding portion 89 is configured by bending a bar material into a substantially U-shape, and is provided in a state of being attached and fixed to the lateral side outer side portion of the fertilizer application frame 75 and extending laterally outward. Yes.

  As shown in FIGS. 5 and 11, a protective member 90 is provided on the outer side of the marker support frame 85 on the lateral side of the machine body so as to extend outwardly. The protective member 90 is supported on the outer side of the marker support frame 85 on the lateral side of the machine body and extends toward the lateral side of the machine body in the lateral direction, and on the lateral direction in the lateral direction of the machine than the seeding device 9 and the fertilizer application device 10. The protective action portion 90b protrudes to the side, and the protective action portion 90b is configured to be freely changeable in position between the protective action position and the maintenance position that can be grounded.

  That is, the support rod 90a is formed in a round pipe shape, and is inserted into and attached to the outer side of the machine body side of the marker support frame 85 formed in a round pipe shape so as to be rotatable around the horizontal axis, and the pin ( (Not shown) is supported in a state of being prevented from rotating, the pin is replaced, the support rod 90a is rotated, and the protective action portion 90b covers the outer side of the seeding device 9 and the fertilizer application device 10 in the lateral direction. It is configured to be able to switch to a maintenance position that protrudes downward and can be grounded using the support tool G.

[Frame structure of working part A]
As is clear from the above description, the seeding device 9 configured by arranging four seed feeding portions 28 in the machine body width direction includes the seeding frame 47 extending along the machine body width direction in a state extending along the machine body width direction. In addition, a fertilizer application device 10 configured by arranging four fertilizer feeding portions 57 in the horizontal direction of the machine body is provided with a fertilization frame 75 extending along the horizontal direction of the machine body. The feeding unit 28 and the fertilizer feeding unit 57 can be supported in a stable state in a series.

  The sowing frame 47 and the fertilization frame 75 are configured to be connected along the front-rear direction by the front-rear transmission case 26 provided with a pair in the width direction of the machine body. The sowing frame 47, the fertilization frame 75, As shown in FIG. 4, each of the pair of front and rear transmission cases 26 forms a substantially square frame structure in plan view.

  The rear side portions of the pair of left and right front and rear transmission cases 26 are connected by a rear side connecting member 55, and the front side portions of the pair of front and rear transmission cases 26 are laterally cylindrical transmission cases on both left and right sides. 24 and the feed case 19 at the left and right central portions, the support strength for supporting the fertilizing frame 75 and the sowing frame 47 can be improved, and the support strength of the frame structure can be further increased. Therefore, in this embodiment, the front side connecting member 100 is constituted by the laterally cylindrical transmission cases 24 on both the left and right sides and the feed case 19 on the left and right central portions.

[Work form]
In this paddy field machine, the sowing apparatus 9, the fertilizer application apparatus 10, and the chemical spraying apparatus 11 are operated while the traveling machine body is traveling, so that the sowing apparatus 9 is applied to a flat field scene leveled by the leveling float 12. A set amount of seed pods (seed) is fed from the four seed feeding sections 28, and four seeding is performed by its own weight. At the same time, the spraying of the drug to the entire region having a width of 4 is performed by the diffusion blade 81 of the drug spraying device 11. In addition, the fertilizer is supplied to the grooving device 59 from the four fertilizer feeding sections 57 of the fertilizer application apparatus 10 through the fertilizer hose 58 and fertilization is performed on the farm scene.

[Another embodiment]
The present invention may be configured as follows in addition to the embodiment described above.

(1) In the above embodiment, each of the fertilizer hopper 56, the seed hopper 27, and the drug hopper 78 is supported so as to be swingable openable and closable around the laterally turning fulcrum of the front end portion of the machine body, and work from the rear side of the machine body. The person can replenish each of fertilizer, seeds, and medicines, but instead of such a configuration, the following (a) and (b) may be configured.

  (A) As shown in FIG. 13, each of the fertilizer hopper 56, the seed hopper 27, and the drug hopper 78 may be supported so as to be swingable openable and closable around a lateral rotation fulcrum at the rear end of the machine body. . If comprised in this way, the operator who is boarding the traveling body 3 can replenish each of a fertilizer, a seed, and a chemical | medical agent from the traveling body 3 side.

  (B) As shown in FIG. 14, the fertilizer hopper 56 is supported so as to be swingable and openable about a laterally rotating fulcrum at the rear end of the machine body, and the seed hopper 27 and the drug hopper 78 are respectively It is good also as a structure supported so that rocking | fluctuation opening / closing is possible centering | focusing on the horizontal rotation fulcrum of the body front side edge part. If comprised in this way, about the fertilizer, the operator who has boarded the traveling body 3 can replenish from the traveling body 3 side, and another auxiliary worker will replenish seeds and medicines from the rear side of the body. The replenishment work can be performed efficiently from both the front and rear sides.

(2) In the above embodiment, the traveling machine body 3 is not provided with a special material placement section. However, as shown in FIG. 15, on the left and right sides of the engine bonnet 94 at the front of the traveling machine body 3, It is good also as a structure provided with the reserve material mounting base 95 for carrying and supporting the fertilizer, chemical | medical agent, seed, etc. for supply.

(3) In the said embodiment, although it was set as the structure with which the fertilizer 10 was located in the state located ahead of the body from the sowing apparatus 9, the fertilizer 10 was provided in the state located behind the body from the sowing apparatus 9. It is good also as a structure to be made.

  INDUSTRIAL APPLICABILITY The present invention can be used for a paddy field work machine in which a seeding device and a fertilizer application device are arranged in a working unit in a state where they are arranged in the longitudinal direction of the machine body.

DESCRIPTION OF SYMBOLS 3 Traveling machine body 5 Link mechanism 9 Seeding apparatus 10 Fertilizer 11 Drug distribution apparatus 13 Marker 27 Seed storage part 28 Seed delivery part 56 Fertilizer storage part 57 Fertilizer delivery part 64 Lid 78 Drug storage part 80 Drug delivery part A Working part

Claims (6)

The working part is connected to the rear part of the traveling machine body through a link mechanism so as to be movable up and down.
The working unit feeds seeds stored in the seed storage unit from a plurality of seed feeding units and supplies them to the field, and feeds the granular fertilizer stored in the fertilizer storage unit from the plurality of fertilizer feeding units. It is a paddy field work machine configured to be provided with a fertilizer feeding device supplied to the field in a front-and-back state,
The paddy field work machine in which the fertilizer and the sowing device are arranged in the state where the upper end of the seed storage part in the sowing device is located below the upper end of the fertilizer storage part in the fertilizer.   The paddy field work machine according to claim 1, wherein the fertilizer and the sowing device are arranged in a state where the fertilizer is located on the front side of the machine body relative to the sowing device.   A drug spraying device that feeds the powdered drug stored in the drug storage unit from the drug feeding unit and sprays it on the field in a state of being located on the rear side of the machine body with respect to the seeding device and the fertilizer application device. The paddy field work machine according to 1 or 2.   In the state where the upper end portion of the drug storage unit in the drug spraying device is located above the upper end portion of the seed storage unit in the seeding device and the fertilizer storage unit in the fertilizer application device located on the rear side of the machine body, The paddy field machine according to claim 3, wherein the paddy field work machine is provided. On both the left and right sides of the working unit, markers that can freely change the posture are provided over an action posture that draws a running index on a farm scene and a retracted posture that retreats toward the body side,
The paddy field work machine according to any one of claims 1 to 4, wherein each of the seeding device and the fertilizer is disposed so as to be positioned below the upper end of the marker in the retracted position. .   The upper lid body of the fertilizer storage part in the fertilizer application is provided so as to be swingable and openable around a lateral rotation fulcrum provided at an end opposite to the seeding device existence side. The paddy field work machine according to any one of 5.

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