JP2015039324A - Paddy field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paddy field working machine for supplying powder granules in a paddy in which intervals of adjacent supply lines are set to smaller one and the number of feeding parts are increased, and thereby a structure capable of performing dense planting can be obtained without difficulty.SOLUTION: Multiple supply lines L1-L15 along the fore-and-aft direction are set in a paddy at predetermined intervals in the lateral direction. A supply line of one end at right and left is assumed as a first supply line L1, and the odd-numbered supply lines and the even-numbered supply lines are set at the other side of right and left from the first supply line. Pre-feeding parts 20 are arranged and disposed at predetermined intervals in the lateral direction so as to be positioned in an upper part of one supply line of the odd-numbered or the even-numbered supply lines. Succeeding feeding parts 48 are arranged and disposed at predetermined intervals in the lateral direction so as to be positioned in the upper part of the other supply line of the odd-numbered or the even-numbered supply lines at the rear side of the pre-feeding part 20.

Description

  The present invention relates to a paddy field machine for supplying seeds, fertilizers, chemicals and other granular materials from the surface of a rice field or from the surface of the rice field to a lower rice field.

As an example of the paddy field working machine as described above, as disclosed in Patent Document 1, there is a direct seeding machine that supplies seed rice, which is an example of a granular material, to the rice field.
In Patent Document 1, a direct sowing device (corresponding to a working device) is configured by including a hopper for storing seed pods and a plurality of feeding portions for feeding out powder particles of the hopper, and the direct sowing device is supported by the rear part of the machine body. Has been.

  In Patent Document 1, in the working device, six feeding portions are arranged side by side at a predetermined interval in the left-right direction. Thereby, as the aircraft progresses, the seed pods are fed out from the feeding section and supplied to the rice field, and the seed potatoes have six strips (corresponding to a supply line set on the rice field at predetermined intervals in the left-right direction). To be supplied to the rice field.

JP-A-10-215615 JP 2000-83419 A

  In contrast to the direct seeding machine as described above, in the rice transplanter, as disclosed in Patent Document 2, the distance between the adjacent planting mechanisms in the left-right direction is set to a small one, and the number of lines and planting are set accordingly. There is one that is configured to perform dense planting by increasing the number of mechanisms (10 sets in Patent Document 2) (in the stripes where seedlings are planted, the interval between adjacent stripes (interval) is generally about 300 mm. On the other hand, in patent document 2, it sets so that the space | interval of the left-right direction of the adjacent planting mechanism may be set small, and it is comprised so that a space | interval may be 210-240 mm).

  In recent years, in a direct sowing machine such as Patent Document 1, as in the rice transplanter of Patent Document 2, the spacing (interval between adjacent supply lines) is set to be small, the number of feeding parts is increased, and dense seeding is performed. There is a demand for direct seeding machines that can be used.

  The present invention is a paddy field work machine that supplies seeds, fertilizers, chemicals, etc. in the paddy field work machine that feeds the surface of the paddy field and the surface of the paddy field into the lower paddy field, and sets the interval between adjacent supply lines to be small, The purpose is to make it possible to obtain a structure capable of dense seeding with a large number of feeding parts.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a paddy field work machine.
Support the work equipment at the rear of the aircraft,
A hopper for storing powder particles, a plurality of pre-feeding portions for feeding and supplying the powder particles of the hopper to the surface, and a plurality of post-feeding portions for feeding and supplying the powder particles of the hopper to the surface. And constituting the working device,
A plurality of supply lines along the front-rear direction are set on the surface with a predetermined interval in the left-right direction, and in the plurality of supply lines, the supply line at one of the left and right ends is the first supply line, and the first Set the odd-numbered supply line and the even-numbered supply line on the other left and right side from the supply line,
The front feeding parts are arranged side by side at a predetermined interval in the left-right direction so as to be positioned above one of the odd-numbered or even-numbered supply lines,
On the rear side of the front feeding part, the rear feeding parts are arranged side by side at a predetermined interval in the left-right direction so as to be positioned above the other supply line of the odd number or even number,
The granular material fed out from the front feeding portion is supplied to the rice field along the odd-numbered or even-numbered supply line, and the granular material fed out from the rear feeding portion is the odd-numbered or even-numbered. It is configured to be supplied to the rice field along the other supply line.

(Operation and effect of the invention)
[I] -1
For example, as in Patent Document 1, in a working apparatus in which a plurality of feeding units are arranged in a line at predetermined intervals in the left-right direction, each spacing of the feeding units is set to a small interval between adjacent supply lines. Needs to be set at a small interval so that the adjacent feeding portions are positioned above each of the supply lines.
However, since the feeding portion has a relatively large lateral width, it is difficult to set the interval between adjacent feeding portions to be small.

[I] -2
According to the first feature of the present invention, in contrast to the state described in [I] -1, the all-out portions are not arranged in a line in the left-right direction, but are arranged in the left-right direction on the front side. And a rear feeding portion arranged in the left and right direction on the rear side. And, for example, as shown in FIG. 4, the front feeding portion is arranged above the odd-numbered supply lines, such as the first, third,... From the left side of FIG. It is arranged above the even-numbered supply line, such as second, fourth from the left.

  In this case, for example, when the front feed section (rear feed section) is arranged above the first and third supply lines, the interval between the adjacent front feed sections (rear feed sections) is the interval between the adjacent supply lines (see FIG. 4 times W1)). For example, when the front feed section (rear feed section) is arranged above the first and fifth supply lines, the interval between the adjacent front feed sections (rear feed sections) is four times the interval between the adjacent supply lines (2 Times more).

  Thus, the interval between adjacent supply lines is set to be small so that dense seeding is performed, and the distance between adjacent front supply parts is set so that each of the front and rear supply parts is located above each of the supply lines. And even if the interval between adjacent rear extension parts is set to a small one, adjacent front extension parts (adjacent rear extension parts) do not interfere with each other, and the interval between adjacent front extension parts and the The interval between the feeding parts can be set to a small one without difficulty.

[I] -3
As in the first feature of the present invention, when the front feeding portion is arranged above the odd-numbered (even-numbered) supply line and the rear feeding portion is arranged above the even-numbered (odd-numbered) supply line, Since the positions of the front and rear extension parts are shifted in the left-right direction when viewed in the front-rear direction (see FIG. 3), the front and rear extension parts are made closer to each other by reducing the front-rear direction interval in the front and rear extension parts. However, the front and rear payout portions do not interfere with each other.
As a result, even if the front and rear pay-out portions are provided, the front and rear pay-out portions can be made to approach each other without difficulty, and the overall longitudinal length of the work device can be suppressed, and the work device can be made compact. be able to.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the paddy field work of the first feature of the present invention.
The number of the front feeding parts and the number of the rear feeding parts are set to be different.

(Operation and effect of the invention)
As described in [I] -3 above, when the positions of the front and rear feeding parts are shifted in the left-right direction when viewed in the front-rear direction, the number of front feeding parts and the rear are as in the second feature of the present invention. If the number of feeding parts is set differently, for example, as shown in FIG. 4, the number of front feeding parts is set to an even number (eight in FIG. 4), and the number of rear feeding parts is an odd number (FIG. 4). Can easily be set to 7).

As a result, for example, as shown in FIG. 4, it is possible to easily arrange the same number of front feeding portions on the right and left sides of the central supply line (see L8 in FIG. 4) symmetrically. It is possible to easily arrange the central rear extension part at the left and right sides and the left side of the central rear extension part.
Therefore, it is possible to easily configure the entire front and rear feeding portions to be bilaterally symmetric, so that the right and left balance of the working device can be improved.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the paddy field working machine of the second feature of the present invention.
The difference between the number of the front feeding parts and the number of the rear feeding parts is set to one.

(Operation and effect of the invention)
As described in [II] above, for example, when the number of front feed parts is set to an even number and the number of back feed parts is set to an odd number (the number of front feed parts is set to an odd number, When the number of parts is set to an even number), as in the third feature of the present invention, by setting the difference between the number of front feeding parts and the number of rear feeding parts to one, it is adjacent in the front-rear direction view The post-feeding portion is arranged at all between the pre-feeding portions (see FIG. 3).
Thereby, there is no portion where the rear feeding portion is not arranged between the adjacent front feeding portions when viewed in the front-rear direction, and the granular material can be uniformly supplied to the field as the entire working device.

[IV]
(Constitution)
A fourth feature of the present invention resides in the following configuration in the paddy field working machine of the second or third feature of the present invention.
The number of the front feeding parts is set to be larger than the number of the rear feeding parts.

(Operation and effect of the invention)
According to the fourth feature of the present invention, the center of gravity of the working device can be set to the front by setting the number of the front feeding parts to be larger than the number of the rear feeding parts.
Thereby, when a working device is supported at the rear part of the machine body, the center of gravity of the working device approaches the machine body, and the front-rear balance of the paddy field working machine as a whole can be improved.

[V]
(Constitution)
According to a fifth aspect of the present invention, in any one of the paddy field working machines according to the first to fourth aspects of the present invention, the fifth aspect is configured as follows.
The front feeding part and the rear feeding part are arranged at the same height.

(Operation and effect of the invention)
As in the fifth feature of the present invention, by arranging the front feeding portion and the rear feeding portion at the same height, when the powder particles are fed from a plurality of feeding portions at the same time, the powder particles are placed on the surface. It is possible to reduce a state in which a difference occurs in the arrival timing, and it is possible to uniformly supply the granular material to the rice field as a whole of the working device.

[VI]
(Constitution)
According to a sixth aspect of the present invention, any one of the first to fifth paddy field machines according to the present invention is configured as follows.
Set a virtual center line that extends backward from the left and right center of the width of the rear wheel that supports the aircraft,
The position of the supply line in the vicinity of the virtual center line is set so that the granular material is supplied to a position off the right or left side from the virtual center line.

(Operation and effect of the invention)
Since there is a rear wheel that supports the fuselage in front of the work device, if the interval between adjacent supply lines is set small as described in the preceding section [I], the passage trace of the rear wheel and the supply line approach each other. May overlap with each other, and the granular material may be supplied to the passage mark of the rear wheel.

  In this case, since the portion located at the center of the lateral width of the rear wheel is a deep groove in the passage mark of the rear wheel, the rear wheel is extended rearward from the lateral center of the lateral width of the rear wheel as in the sixth feature of the present invention. By configuring so that the granular material is supplied to a position off the right or left side from the virtual center line, it is possible to avoid a state in which the granular material is supplied to the deep groove, and the surface of the granular material The supply performance can be improved.

[VII]
(Constitution)
The seventh feature of the present invention resides in the following configuration in the paddy field working machine of the sixth feature of the present invention.
The rear wheel comprises a rim portion on the outer peripheral portion, and a lug portion that is provided at a predetermined interval along the circumferential direction of the rim portion and has a larger lateral width than the rim portion,
Setting a virtual rim part line extending rearward from the left and right ends of the lateral width of the rim part, and a virtual lug part line extending rearward from the left and right ends of the lateral width of the lug part,
The position of the supply line in the vicinity of the virtual center line is set so that the granular material is supplied to a position between the virtual rim part line and the virtual lug part line.

(Operation and effect of the invention)
[VII] -1
As described in the preceding item [I], when the interval between the adjacent supply lines is set to be small, it is difficult to largely separate the supply line from the trace of passage of the rear wheels.
In this case, in the rear wheel, the rim portion exists over the entire circumference of the outer peripheral portion of the rear wheel, and the groove formed by the rim portion is continuously formed on the surface of the pad. Is supplied, the influence of the rim on the granular material of the groove is relatively large. On the other hand, the lug part is partially provided in the rim part, and the groove formed by the lug part is intermittently formed on the surface, so that the granular material is rarely supplied to the passage trace of the lug part. The influence of the lug portion on the granular material of the groove is relatively small.

[VII] -2
According to the seventh aspect of the present invention, in the state described in [VII] -1, the virtual rim portion line extending rearward from the left and right ends of the lateral width of the rim portion and the lateral left and right sides of the lug portion A virtual lug part line extending rearward from the end of the slab is set so that the powder particles are supplied to a position between the virtual rim part line and the virtual lug part line.
Thereby, it is possible to set the supply line close to the virtual center line while suppressing the influence on the granular material of the groove to be relatively small, and set the interval between the adjacent supply lines to be small without difficulty. be able to.

[VIII]
(Constitution)
According to an eighth aspect of the present invention, in any one of the paddy field working machines according to the first to seventh aspects of the present invention, the eighth aspect is configured as follows.
A front horizontal frame arranged along the left-right direction, a rear horizontal frame arranged along the left-right direction on the rear side of the front horizontal frame, and a vertical frame connected across the front and rear horizontal frames. Comprising the working device,
The front extension part is supported by the front horizontal frame, and the rear extension part is supported by the rear horizontal frame.

(Operation and effect of the invention)
According to the eighth aspect of the present invention, the front horizontal frame, the rear horizontal frame, and the vertical frame constitute a frame-like body, and the front feeding part is supported by the front horizontal frame with sufficient strength, and the rear feeding part is The horizontal frame is supported with sufficient strength.

It is a whole side view of a riding type direct seeding machine. It is a whole top view of a riding type direct seeding machine. It is the whole back view of a direct seeding apparatus. It is a schematic plan view which shows the arrangement | positioning of a 1st-15th supply line, the arrangement | positioning of a front and back delivery part, and the transmission structure to a front and back delivery part. It is a whole side view of a direct sowing apparatus. It is a side view which shows the state which operated the back hopper, the back extension part, the groove making device, and the guide member to the non-working attitude | position. It is a schematic plan view which shows arrangement | positioning of a 1st-15th supply line, a front and back feeding part, a groove device, a float, a rear wheel, a leveling member, etc. It is a rear view of a front hopper, a front feeding part, a groove forming device and a guide member, a float, etc., and a rear hopper, a rear feeding part, a groove forming device, a guide member, and the like. It is a whole perspective view which shows structures, such as a horizontal frame and a vertical frame, in a direct seeding apparatus. It is a rear view which shows a left rear hopper, a back feeding part, a groove production device, a guide member, etc. It is a rear view which shows a right rear hopper, a rear extension part, a groove production device, a guide member, etc. It is a side view which shows the support structure of the float of the center side. It is a side view which shows the support structure of an outside float. It is a top view which shows the support structure of the float of the center side. It is a rear view which shows the support structure of a mudguard board and a leveling member. In 1st another form of implementation of this invention, it is a schematic plan view which shows arrangement | positioning of a 1st-15th supply line, a front and back delivery part, a grooving device, a float, a rear wheel, a leveling member, a grooving device, etc. In 2nd form of implementation of invention, the outline which shows arrangement | positioning of a 1st-15th supply line, a front and a rear hopper, a front and a rear feeding part, a grooving machine, a float, a rear wheel, a leveling member, a grooving machine, etc. It is a top view. In the 2nd another form of implementation of invention, it is a side view which shows support structures, such as a front hopper and a front delivery part, a grooving machine, a float, a leveling member, and a grooving machine. In 2nd another form of implementation of invention, it is a rear view which shows support structures, such as a mudguard plate, a leveling member, and a groove cutter. In the 2nd another form of implementation of invention, it is a rear view which shows the support structure of a rear hopper and a cover board. In 3rd another form of implementation of this invention, it is a schematic plan view which shows arrangement | positioning of a 1st-15th supply line, a front and a rear supply part, a groove production device, a float, a rear wheel, a leveling member, etc. In 7th another form of implementation of this invention, it is a schematic plan view which shows arrangement | positioning of the 1st-15th supply line, and the front and back delivery part.

[1]
As shown in FIGS. 1 and 2, a hydraulic cylinder that swings the link mechanism 3 up and down is supported by a link mechanism 3 supported at the rear of the machine body supported by the front wheels 1 and the rear wheels 2. 4 is provided, and a 15-row direct seeding device 5 (corresponding to a working device) that supplies seed rice (corresponding to a granular material) in a sprouting state to the rice field G in a spotted state, A riding type direct sowing machine, which is an example of a paddy field work machine, is supported by the rear portion of the link mechanism 3.

[2]
Next, the overall frame configuration of the direct seeding device 5 will be described (No. 1).
As shown in FIGS. 5 and 9, a horizontal frame 6 in the left-right direction, a horizontal frame 8 (corresponding to the rear horizontal frame), and a horizontal frame 9 are provided, and at the right and left ends of the horizontal frames 6, 8, 9. The right and left vertical frames 16 in the front-rear direction are connected, and the four vertical frames 17 in the front-rear direction are connected to the horizontal frame 6 to form a frame-like frame in plan view. Each part is supported by this frame-shaped frame, and the entire direct seeding device 5 is configured.

  As shown in FIGS. 5 and 9, a vertical frame 10 is connected to the right and left sides of the horizontal frame 6, and horizontal frames 11 and 12 are connected to the upper and middle portions of the frame 10. Has been. A rolling shaft 13 is connected to the central portion of the horizontal frame 6 and protrudes forward. In the link mechanism 3, a boss portion 14 a is connected to the lower end portion of the vertical hitch frame 14, and the rolling shaft 13 is rotatably supported by the boss portion 14 a of the hitch frame 14. A right spring 15 and a left spring 15 are connected to the upper part of 10.

As shown in FIGS. 1 and 5, in a state where the direct sowing apparatus 5 is supported on the rear part of the machine body, the direct sowing apparatus 5 is in a state of being returned to a state parallel to the machine body by the urging force of the spring 15. Is freely rolled around the longitudinal axis P1 of the rolling shaft 13.
As shown in FIGS. 5 and 9, the right and left receiving portions 6 a are connected to the right and left sides of the rolling shaft 13 in the horizontal frame 6, and when the link mechanism 3 is raised to the upper limit, the link mechanism 3 The provided right and left stoppers (not shown) hit the receiving portion 6a of the horizontal frame 6 and are held so that the direct seeding device 5 does not roll.

[3]
Next, the overall frame configuration of the direct seeding device 5 will be described (No. 2).
As shown in FIGS. 1, 2 and 9, brackets 6b are connected to the right and left end portions of the horizontal frame 6, and the right and left markers 18 forming the mark of the next work process on the surface G are arranged in the horizontal frame 6. The bracket 6b is supported so as to be swingable up and down around the front and rear axis. As a result, the right and left markers 18 are operated in a working posture in which a ground is formed on the surface G and a mark is formed on the surface G, and in a retracted posture positioned above the surface G.

  As shown in FIGS. 2 and 9, a bracket 16 a having a U-shaped cross section is connected to the front end portion of the vertical frame 16 in the front-rear direction. The right and left guard members 19 obtained by bending the round pipe into a crank shape are supported by the bracket 16a of the vertical frame 16 so as to be rotatable around the front and rear axis P3.

The state shown in FIGS. 2 and 9 is a state in which the guard member 19 is fixed in a horizontal posture by a fixing pin (not shown), and the right and left sides of the working device 5 are protected by the guard member 19 in the horizontal posture.
When the guard member 19 is changed to a downward posture on the road or the like and fixed with a fixing pin, the guard member 19 can be used as a stand of the direct seeding device 5 when the direct seeding device 5 is lowered to the ground.

  As shown in FIGS. 5, 7, 9, and 15, a vertical frame 61 is connected to a portion of the horizontal frame 6 that corresponds to the rear of the rear wheel 2 and extends forward. A vertical frame 62 is connected, and a horizontal frame 63 is connected to the upper end of the frame 62. A flat mudguard plate 64 that stops mud that the rear wheel 2 jumps backward is connected to the frames 62 and 63.

  As shown in FIGS. 5, 7, and 15, a rake-like leveling member 65 is bolted to the front surface of the mudguard plate 64, and the leveling member 65 is connected to the mudguard plate 64 in the range of the long hole 65 a of the leveling member 65. The connection position can be adjusted up and down.

As shown in FIGS. 5, 7, and 15, on the rear side of the mudguard plate 64, a horizontal frame 66 is connected to the lower surface of the vertical frame 61, and the two rake-shaped leveling members 67 are connected to the leveling member 65. Bolts are connected to the frame 66 so as to be positioned on both lateral sides.
The leveling member 67 is provided with four long holes 67a. As a result, the position where the leveling member 67 is connected to the frame 66 can be adjusted up and down in the range of the long hole 67a of the leveling member 67, and the long hole 67a of the four long holes 67a of the leveling member 67 can be adjusted. Depending on whether or not is used, the connecting position of the leveling member 67 to the frame 66 can be adjusted left and right.

[4]
Next, the floats 31 and 32 supported by the direct seeding device 5 and the lifting control will be described.
As shown in FIGS. 1, 2, and 7, there are four floats 31, 32, that is, a right and left float 31 on the center side and a right and left float 32 on the outside. Are structured in the same way.

  As shown in FIGS. 5, 7, 9, and 13, the bracket 25 is connected to the rear end portion of the vertical frame 17, and a bracket 32 a configured by bending a plate material is connected to the rear portion of the float 32. The bracket 32a of the float 32 is attached to the left and right support pins 25a attached.

  As shown in FIGS. 7, 8, and 13, a fixing pin 33 is attached to the bracket 25 so as to engage with an upper portion of the bracket 32 a of the float 32, and a gap between the upper portion of the bracket 32 a of the float 32 and the fixing pin 33 is provided. The right and left floats 32 are supported so as to be swingable up and down. In this case, the vertical swing range of the float 32 is set to be smaller than the vertical swing range of the float 31 described later.

  As shown in FIGS. 12 and 14, a bracket 31 a configured by bending a plate material is connected to the rear portion of the float 31, and the bracket 31 a of the float 31 is attached to the left and right support pins 25 a attached to the bracket 25. It is attached to swing up and down. A bracket 34 is connected to the left side of the front part of the right float 31, a bracket 35 is connected to the right side of the front part of the left float 31, and a frame 36 is connected across the brackets 34, 35, The right and left floats 31 are supported so as to swing up and down integrally around the support pins 25 a of the bracket 25.

  As shown in FIGS. 12 and 14, a potentiometer type height sensor 38 is connected to a support member 37 connected backward from the horizontal frame 6, and a detection arm 38 a of the height sensor 38 is extended forward. The rod 40 is connected across the arm 39 attached to the bracket 35 and the detection arm 38a of the height sensor 38. A spring 41 that biases the float 31 upward is connected across the bracket 6c and the frame 36 connected to the horizontal frame 6. A wire 42 that determines the lower limit of the float 31 is connected across the receiving portion 6 a of the horizontal frame 6 and the bracket 34.

With the above structure, the detection value of the height sensor 38 is input to a control device (not shown), and the control device operates a control valve (not shown) for supplying and discharging hydraulic oil to and from the hydraulic cylinder 4. . When the direct seeding device 5 moves up and down with respect to the floats 31 and 32 that follow the ground contact with the table surface G, the control valve is operated by the control device based on the detection value of the height sensor 38, and the hydraulic cylinder 4 expands and contracts. The device 5 moves up and down automatically.
Thereby, the direct sowing apparatus 5 (vertical frame 17) and the float 31 are maintained in the reference posture shown in FIG. 12, and the direct sowing apparatus 5 is maintained at the set height from the surface G (this corresponds to the lifting control). ).

  As shown in FIG. 12, the bracket 35 is provided with one first hole 35a and four second holes 35b so that the heights of the four second holes 35b are slightly different. Has been placed. The arm 39 is provided with a pin 39 a and four holes 39 b, and the four holes 39 b are arranged in parallel with the arm 39. With the pin 39a of the arm 39 inserted into the first hole 35a of the bracket 35, the bolt 43 is inserted by aligning one of the second holes 35b of the bracket 35 and one of the holes 39b of the arm 39. Then, the arm 39 is connected to the bracket 35.

  Thereby, as shown in FIG. 12, by changing the second hole 35b of the bracket 35 into which the bolt 43 is inserted and the hole 39b of the arm 39, the connecting posture of the arm 39 to the bracket 35 is parallel, slightly upward, The float 31 shown in FIG. 12 is set to be parallel, slightly upward, and slightly downward.

  When the reference posture of the float 31 is set slightly upward, the contact area with respect to the surface G becomes small, the contact tracking sensitivity of the float 31 to the surface G becomes insensitive, and the control sensitivity of the lift control becomes insensitive. If the reference posture of the float 31 is set slightly downward, the ground contact area with respect to the field G increases, the ground contact sensitivity to the field G of the float 31 becomes sensitive, and the control sensitivity of the lift control becomes sensitive.

[5]
Next, the support structure of the front hopper 23 and the front feeding part 20 will be described.
As shown in FIGS. 5, 8, and 9, a vertical frame 21 is connected to the rear portion of the vertical frame 17, and a horizontal frame 22 (corresponding to the front horizontal frame) is connected to the upper end of the frame 21. The eight front feeding portions 20 are connected to the horizontal frame 22 side by side at a predetermined interval in the left-right direction. A front hopper 23 (corresponding to a hopper) is connected over the upper part of the two front feeding parts 20, and four identical front hoppers 23 are provided for the eight front feeding parts 20.
In this case, a horizontally long single front hopper 23 may be connected over the upper portions of the eight front feeding portions 20.

  As shown in FIGS. 5, 8, and 9, a bracket 21 a is connected to the upper end portion of the frame 21, and a support plate 24 is connected to the bracket 21 a of the frame 21, and the center portion of the front hopper 23 is connected by the support plate 24. Supported from below. A lid portion 23a is supported so as to be openable and closable around a horizontal axis P4 at the front end of the upper portion of the front hopper 23. By opening the lid portion 23a of the front hopper 23, the front hopper 23 is moved from the rear side of the direct seeding device 5 to the front hopper 23. You can replenish seeds.

  As shown in FIGS. 5, 7, 8, and 9, a horizontal frame 26 in the left-right direction is connected across the bracket 25. The right and left vertical wall plates 27b are connected rearward to the rear portion of the triangular grooved plate 27a in a side view, so that the groover 27 is configured, and is positioned below the front feeding portion 20. Eight grooving devices 27 are connected to the horizontal frame 26 side by side at a predetermined interval in the left-right direction.

  As shown in FIGS. 8 and 9, the bracket 25 is provided with a vertically long slot 25 b, and the horizontal frame 26 is connected to the slot 25 b of the bracket 25 by a bolt 29. As a result, the height of the horizontal frame 26 is adjusted along the long hole 25b of the bracket 25, and the horizontal frame 26 is connected to the bracket 25 by the bolt 29. Can be changed. In this case, a shallow groove is formed on the surface G by the groove generator 27 so that the lower end portion of the groove generator 27 is positioned slightly below the bottom surfaces of the floats 31 and 32.

  As shown in FIGS. 5 and 8, a guide member 28 formed by bending a plate material into a U-shaped cross section is connected to the lower portion of the front feed portion 20 and extends downward, and the lower portion of the guide member 28 is made. The groove 27 is inserted between the vertical wall plates 27b.

  As a result, as shown in FIGS. 3, 4, and 7, the first, third, fifth, seventh, and ninth described in [8], which will be described later, are applied to the surface G that is leveled by the floats 31 and 32 and the leveling members 65 and 67. 11, 13, 15 A shallow groove is formed by the groove generator 27 along the supply lines L 1, L 3, L 5, L 7, L 9, L 11, L 13, L 15. The first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth supply lines L1, L3, L5, L7, L9, L11, L13, and L15 are dropped out of the space surrounded by the guide member 28. Is supplied to a shallow groove of the rice field G formed along the surface.

[6]
Next, a support structure for the rear hoppers 46 and 47 and the rear feeding portion 48 will be described.
As shown in FIGS. 8, 9, 10, and 11, vertical frames 30, 44, and 45 are connected across the horizontal frames 8 and 9 to form a frame-like frame. A boss portion 49 is connected to the frame 44, and the boss portion 49 is rotatably supported around the horizontal axis P6 of the support member 50 connected to the left vertical frame 16. A support pin 51 is connected to the frame 45, and the support pin 51 is rotatably supported around a horizontal axis P6 of a support member 52 connected to the right vertical frame 16.

As shown in FIGS. 5, 8, 10, and 11, seven rear extending portions 48 are arranged at predetermined intervals in the left-right direction and connected to the horizontal frame 8. The rear extending portion 48 and the front extending portion 20 are Are the same. A rear hopper 46 (corresponding to a hopper) is connected to the upper part of the central three rear feeding portions 48. A rear hopper 47 (corresponding to a hopper) is connected over the upper part of the right two rear feed portions 48 and the left two rear feed portions 48, so that two rear feed portions 48 are connected to two rear feed portions 48. The same rear hopper 47 is provided, and the front hopper 23 and the rear hopper 47 are the same.
In this case, a horizontally long single rear hopper 46 may be connected over the upper portions of the seven rear feed portions 48.

  As shown in FIGS. 5, 8, 9, 10, and 11, a bracket 30 a is coupled to the upper end portion of the frame 30, and the support plate 24 is coupled to the bracket 30 a of the frame 30. , 47 is supported from below. Lids 46a, 47a are supported in an openable / closable manner around the horizontal axis P5 at the front end of the upper part of the rear hoppers 46, 47, and the direct seeding device 5 is opened by opening the lids 46a, 47a of the rear hoppers 46, 47. The seed hopper can be replenished to the rear hoppers 46 and 47 from the rear side.

  As shown in FIGS. 5, 7, 8, and 9, two brackets 53 on the right and left sides of the horizontal frame 9 are connected, and a horizontal frame 54 in the left-right direction is connected across the bracket 53. The right and left vertical wall plates 55b are connected rearward to the rear portion of the triangular grooved plate 55a in a side view, so that the groove forming device 55 is configured and is positioned below the rear feeding portion 48. Seven groovemakers 55 are connected to the horizontal frame 54 side by side at a predetermined interval in the left-right direction.

  As shown in FIGS. 8 and 9, the bracket 53 is provided with a vertically extending long hole 53 a, and the horizontal frame 54 is connected to the long hole 53 a of the bracket 53 by a bolt 56. As a result, the height of the horizontal frame 54 is adjusted along the long hole 53a of the bracket 53, and the horizontal frame 54 is connected to the bracket 53 by the bolt 56, thereby simultaneously adjusting the height of the seven groove forming devices 55. Can be changed.

In this case, the long hole 53a of the bracket 53 is set to be longer than the long hole 25b of the placket 25, and the height adjustment range of the groove forming device 55 is larger than the height adjustment range of the groove forming device 27. Set to something.
The direct seeding device 5 tends to fall backward due to the overall deflection of the link mechanism 4 and the direct seeding device 5, and the height of the grooving device 55 tends to be lower than the height of the grooving device 27. After setting the height of the groove forming device 27 so that the lower end of the groove forming device 55 is positioned slightly below the bottom surface of the groove forming device 55, the height of the groove forming device 55 is set to the same height as the groove forming device 27. Set the size. Thus, when setting the height of the groove producing device 55 to be the same height as the groove producing device 27, it is effective that the adjustment range of the height of the groove producing device 55 is large.

  As shown in FIGS. 5 and 8, a guide member 57 formed by bending a plate material into a U-shaped cross section is connected to the lower portion of the rear feed portion 48 and extends downward, and the lower portion of the guide member 57 is made. The groove 55 is inserted between the vertical wall plates 55b.

  As a result, as shown in FIGS. 3, 4, and 7, the surface G leveled by the floats 31 and 32 and the leveling members 65 and 67 is applied to the second, fourth, sixth, eighth, and tenth described in [8] described later. , 12, 14 along the supply lines L 2, L 4, L 6, L 8, L 10, L 12, L 14, shallow grooves are formed by the grooving device 55, so that the seeds of the rear hoppers 46, 47 are fed by the rear feeding portion 48. Formed along the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8, L10, L12, and L14 after being drawn out and dropped in the space surrounded by the guide member 57. It is supplied to the shallow groove of the rice field G.

[7]
Next, the posture change of the rear hoppers 46 and 47 and the rear feeding portion 48 will be described.
As shown in FIGS. 8, 10, and 11, the boss portion 49 connected to the frame 44 is rotatably supported around the horizontal axis P <b> 6 of the support member 50 connected to the left vertical frame 16. The connected support pin 51 is rotatably supported around the horizontal axis P6 of the support member 52 connected to the right vertical frame 16 (see the preceding item [6]).

  As a result, as shown in FIGS. 5 and 8, the three rear hoppers 46, 47, the seven rear feed portions 48, the seven groove forming devices 55, the seven guide members 57, and the like are integrated into a unit. And supported by the support members 50 and 52 by the boss portion 49 and the support pin 51 so as to be swingable around the horizontal axis P6.

  As shown in FIGS. 8, 10, and 11, brackets 9 a are connected to the right and left ends of the horizontal frame 9, and the connection pins 58 are slidable to the bracket 9 a of the horizontal frame 9 in the horizontal direction and the horizontal axis in the horizontal direction. A spring 59 that is supported so as to be rotatable around and that biases the connecting pin 58 toward the laterally protruding side is provided.

  5, 8, 10, and 11 are working postures in which the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are erected, and are connected to the rear end portion of the vertical frame 16. The connecting pin 58 is inserted into the opening of the engaging portion 16b, and the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are fixed to the working posture by the connecting pin 58. is there. In the working posture, the rear feeding portion 48 is disposed at the same height as the front feeding portion 20, and the rear hoppers 46 and 47 are disposed at the same height as the front hopper 23.

  In the working posture, as described in [6], the second, fourth, sixth, eighth, tenth, twelfth, and fourteenth supply lines L2 are provided on the surface G leveled by the floats 31 and 32 and the leveling members 65 and 67. A shallow groove is formed by the grooving device 55 along L 4, L 6, L 8, L 10, L 12, and L 14, and the seeds of the rear hoppers 46 and 47 are fed out by the rear feeding portion 48 and surrounded by the guide member 57. And then supplied to the shallow groove on the surface G formed along the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8, L10, L12, and L14. Is done.

As shown in FIG. 6, by removing the connecting pin 58 from the engaging portion 16b of the vertical frame 16, the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55 and the guide member 57 are moved around the horizontal axis P6. Can be defeated backwards.
The frame 44 is applied to the support plate 16c connected to the rear end portion of the left vertical frame 16, and the weights of the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are determined. By being supported by the support plate 16c, the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 can be brought into a non-working posture that falls backward.

From the state of the non-working posture shown in FIG. 6, the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55 and the guide member 57 can be lifted upward to return to the working posture shown in FIG.
As shown in FIG. 10, a spring 60 that urges the horizontal frames 8 and 9 counterclockwise in FIG. 5 and FIG. 6 is fitted over the support member 50 and the frame 44 by being externally fitted to the boss portion 49. Thus, when the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55 and the guide member 57 are lifted upward, the urging force of the spring 60 is assisted.

[8]
Next, the arrangement of the front and rear feeding units 20 and 48 will be described.
As shown in FIGS. 3, 4, and 7, fifteen first to fifteen supply lines L <b> 1 to L <b> 15 along the front-rear direction are set on the surface G with a predetermined interval W <b> 1 in the left-right direction, The supply line is the first supply line L1, and the second to fifteenth supply lines L2 to L15 are set on the right side. In this case, the interval (predetermined interval W1) between adjacent supply lines is set to about 150 mm.

  As shown in FIGS. 3, 4, and 7, the eight forward feeding portions 20 are provided in the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth supply lines L1, L3, L5, L7, L9, L11, L13 and L15 (odd-numbered supply lines) are arranged side by side at a predetermined interval in the left-right direction so as to be positioned above. Eight groove forming devices 27 are provided for the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteen supply lines L1, L3, L5, L7, L9, L11, L13, and L15 (odd-numbered supply lines). Placed in position.

  As shown in FIGS. 3, 4, and 7, on the rear side of the front feed unit 20, seven rear feed units 48 are provided in the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L 2, L 4, L 6. , L8, L10, L12, L14 (even-numbered supply lines) are arranged side by side at a predetermined interval in the left-right direction. Seven groove generators 55 are arranged at the positions of the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8, L10, L12 and L14 (even-numbered supply lines). ing.

With the above structure, as shown in FIGS. 3, 4, and 7, the interval between the adjacent forward feed portions 20 is twice the interval between the adjacent supply lines (predetermined interval W <b> 1). The interval of 48 is twice the interval of the adjacent supply lines (predetermined interval W1).
The front and rear extension parts 20 and 48 are displaced in the left-right direction when viewed in the front-rear direction, and the rear extension part 48 is positioned between the front extension parts 20 when viewed in the front-rear direction. In this case, since the difference between the number of the front feeding parts 20 and the number of the rear feeding parts 48 is one, the rear feeding parts 48 are arranged at all between the adjacent front feeding parts 20 in the front-rear direction view. ing.

As shown in FIGS. 3, 4, and 7, the center CL in the left-right direction of the machine body and the direct seeding device 5 is the position of the eighth supply line L <b> 8, and the fourth rear extending portion 48 (eighth supply line L <b> 8) Located at the center CL, the center CL is located between the fourth front extension 20 (seventh supply line L7) and the fifth front extension 20 (9th supply line L9).
As a result, the same number of front feeding portions 20 are arranged symmetrically on the right and left sides of the central supply line (eighth supply line L8), and the central supply line (eighth supply line L8) is located behind the center. The feeding part 48 is arranged, and the same number of the rear feeding parts 48 are arranged symmetrically on the right and left sides of the central rear feeding part 48.

[9]
Next, the positional relationship between the left rear wheel 2 and the third and fourth supply lines L3 and L4 (the positional relationship between the right rear wheel 2 and the twelfth and thirteenth supply lines L12 and L13) will be described.
As shown in FIG. 7, the rear wheel 2 is configured to include a rim portion 2a on the outer peripheral portion and a lug portion 2b provided at a predetermined interval along the circumferential direction of the rim portion 2a. The lateral width of the lug 2b is larger than the lateral width of 2a.

As shown in FIG. 7, in the right and left rear wheels 2, a virtual center line C1 extending rearward from the lateral center of the lateral width of the rear wheel 2 (rim portion 2a) is set.
In this case, the positions of the leveling members 65 and 67 are set so that the overlapping part of the leveling member 65 and the leveling member 67 is positioned on the virtual center line C1. The third and fourth supply lines L3 and L4 (grooving devices 27 and 55), the twelfth and the fourth and the fourth supply lines in the vicinity of the virtual center line C1 are supplied so that the seeds are supplied to positions deviated to the right and left from the virtual center line C1. The positions of the thirteenth supply lines L12, L13 (grooving devices 27, 55) are set.

As shown in FIG. 7, in the right and left rear wheels 2, a virtual rim portion line C <b> 2 extending rearward from the right and left end portions of the rim portion 2 a of the rear wheel 2 and a lug portion 2 b of the rear wheel 2. And a virtual lug part line C3 extending rearward from the right and left end parts of the horizontal width of is set.
In this case, the leveling members 65 and 67 are set so that the overlapping portion of the leveling member 65 and the leveling member 67 is positioned on the virtual rim portion line C2, and the leveling members 65 and 67 are set on the virtual lag portion line C3. The positions of the leveling members 65 and 67 are set so that is positioned.

  As shown in FIG. 7, in the left rear wheel 2, the third supply line is so provided that seeds are supplied to a position between the virtual rim part line C <b> 2 and the virtual lag part line C <b> 3 on the left side of the virtual center line C <b> 1. The position of L3 (grooving device 27) is set. The position of the fourth supply line L4 (grooving device 55) is set so that the seed is supplied to the position between the virtual rim line C2 and the virtual lug line C3 on the right side of the virtual center line C1. .

In this case, the positions of the third and fourth supply lines L3 and L4 (grooving devices 27 and 55) are set so that the seeds are supplied to the position of the virtual lug part line C3 in the left rear wheel 2. Also good.
The position of the third supply line L3 (grooving device 27) may be set so that seeds are supplied to a position deviated to the left from the virtual lug line C3 on the left side of the virtual center line C1, and the virtual center line The position of the fourth supply line L4 (grooving device 55) may be set so that the seed is supplied to a position deviated to the right from the virtual lag portion line C3 on the right side of C1.

  As shown in FIG. 7, in the right rear wheel 2, the twelfth supply line is supplied so that the seed is supplied to a position between the virtual rim part line C <b> 2 and the virtual lag part line C <b> 3 on the left side of the virtual center line C <b> 1. The position of L12 (grooving device 55) is set. The position of the thirteenth supply line L13 (grooving device 27) is set so that the seed is supplied to the position between the virtual rim part line C2 and the virtual lug part line C3 on the right side of the virtual center line C1. .

In this case, the positions of the twelfth and thirteenth supply lines L12 and L13 (grooving devices 27 and 55) are set so that the seeds are supplied to the position of the virtual lug part line C3 in the right rear wheel 2. Also good.
The position of the twelfth supply line L12 (grooving device 55) may be set so that seeds are supplied to a position deviated to the left from the virtual lag line C3 on the left side of the virtual center line C1, and the virtual center line The position of the thirteenth supply line L13 (grooving device 27) may be set so that the seeds are supplied to a position off the right side from the virtual lag line C3 on the right side of C1.

[10]
Next, the transmission structure to the front and rear extension parts 20 and 48 will be described.
As shown in FIGS. 4, 5, and 9, a boss portion 68 is connected to the upper portion of the center portion of the horizontal frame 6 through a support member 78 in the front-rear direction, and a bevel gear case 69 is attached to the rear end portion of the boss portion 68. A flat support plate 70 is connected across the left end of the horizontal frame 22 and the support member 50. An input shaft 71 is rotatably supported by the boss portion 68, and the power of the engine 7 provided at the front portion of the airframe is transmitted to the input shaft 71 via the transmission shaft 95.

  As shown in FIGS. 4 and 5, a transmission shaft 72 is provided between the bevel gear case 69 and the support plate 70. In the bevel gear case 69, a bevel gear 71 a fixed to the input shaft 71 and a transmission shaft 72 are provided. The fixed bevel gear 72a is engaged. One transmission shaft 73 is installed in the left-right direction across the support plate 70 and the front feeding portion 20, and the sprocket 72 b fixed to the transmission shaft 72 and the transmission shaft 73 are fixed on the support plate 70 side. A transmission chain 74 is installed over the sprocket 73d.

  As shown in FIGS. 4, 5, 8, and 10, one transmission shaft 75 is installed in the left-right direction across the inside of the boss portion 49 and the rear extension portion 48, and is formed in the opening 70 a at the rear portion of the support plate 70. The boss portion 49 and the transmission shaft 75 are inserted, and on the support plate 70 side, a transmission chain 76 is installed over a sprocket 73e fixed to the transmission shaft 73 and a sprocket 75d fixed to the transmission shaft 75. Yes.

As shown in FIGS. 4, 8, and 10, a cover 77 covering the sprocket 72 b of the transmission shaft 72, the sprockets 73 d and 73 e of the transmission shaft 73, the sprocket 75 d of the transmission shaft 75, the transmission chains 74 and 76, etc. It is connected.
As shown in FIGS. 5, 10, and 11, since the transmission shaft 75 is arranged concentrically with the horizontal axis P6 (the boss portion 49 and the support pin 51), the rear hopper as described in [7] above. Even if the 46, 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are operated to the working and non-working postures, the transmission shaft 75 or the like is not forced.

  As shown in FIGS. 4 and 8, eight output gears 73a are externally fitted to the transmission shaft 73 so as to be relatively rotatable, and eight clutch members 73b are externally fitted to the transmission shaft 73 so as to be integrally rotatable and slidable. A spring 73c that urges the clutch member 73b toward the occlusal side with the output gear 73a is externally fitted to the transmission shaft 73. An input gear 20a of the front feeding portion 20 is provided on the left side surface of the front feeding portion 20, and the input gear 20a of the front feeding portion 20 and the output gear 73a of the transmission shaft 73 are engaged with each other.

  As shown in FIGS. 4, 10, and 11, seven output gears 75a are externally fitted to the transmission shaft 75 so as to be relatively rotatable, and seven clutch members 75b are externally fitted to the transmission shaft 75 so as to be integrally rotatable and slidable. A spring 75c that biases the clutch member 75b toward the occlusal side with the output gear 75a is externally fitted to the transmission shaft 75. An input gear 48a of the rear extension 48 is provided on the left side surface of the rear extension 48, and the input gear 48a of the rear extension 48 and the output gear 75a of the transmission shaft 75 are engaged with each other.

With the above structure, as shown in FIG. 4, the power of the engine 7 is transmitted to the transmission shaft 73 via the input shaft 71, the transmission shaft 72, and the transmission chain 74, and is transmitted to the transmission shaft 75 via the transmission chain 76. Communicated.
In a state where the clutch members 73b and 75b of the transmission shafts 73 and 75 are engaged with the output gears 73a and 75a, the power of the transmission shafts 73 and 75 is transmitted from the output gears 73a and 75a of the transmission shafts 73 and 75 to the front feeding portion 20. It is transmitted to the input gear 20a (the input gear 48a of the rear feeding portion 48), and the front feeding portion 20 (the rear feeding portion 48) is driven.

[11]
Next, the driving and stopping structure of the front and rear feeding units 20 and 48 will be described.
As shown in FIG. 4, one operation shaft 79 is rotatably extended in the left-right direction across the front extension portion 20, and eight cam members are provided so as to correspond to the clutch member 73 b of the transmission shaft 73. 79 a is connected to the operation shaft 79. An operation lever 80 is connected to the right end portion of the operation shaft 79, and a disc-shaped lever guide 81 is connected to the right end portion of the horizontal frame 22.

  As shown in FIGS. 4, 10, and 11, one operation shaft 82 is rotatably extended in the left-right direction across the rear extending portion 48, and is arranged so as to correspond to the clutch member 75 b of the transmission shaft 75. A plurality of cam members 82 a are connected to the operation shaft 82. An operation lever 83 is connected to the right end portion of the operation shaft 82, and a disc-shaped lever guide 84 is connected to the right end portion of the horizontal frame 8.

  With the above structure, when the operation shafts 79 and 82 are rotated by the operation levers 80 and 83, the cam members 79a and 82a of the operation shafts 79 and 82 are used to rotate the clutch shafts 73b and 73b of the transmission shafts 73 and 75 as described later. 75b is operated to move away from the output gears 73a and 75a against the springs 73c and 75c, and the front and rear feeding portions 20 and 48 are stopped.

The operation lever 80 and the lever guide 81 have the following first to eighth positions.
First position (a state in which all the front feeding units 20 are driven).
2nd position (The state where the 1st and 2nd front extension parts 20 (the 1st and 3rd supply lines L1 and L3) stopped, and other front extension parts 20 were driven).
Third position (1st to 4th previous advancement sections 20 (first, third, fifth, and seventh supply lines L1, L3, L5, and L7) are stopped and other previous advancement sections 20 are driven) .
The fourth position (the first to sixth pre-feeding portions 20 (first, third, fifth, seventh, ninth, and eleventh supply lines L1, L3, L5, L7, L9, and L11) is stopped, and other pre-feeding operations are performed. State in which the unit 20 is driven).
5th position (7th, 8th front extension part 20 (13th, 15th supply line L13, L15) stopped, and other front extension parts 20 were driven).
Sixth position (the state where the fifth to eighth pre-feeding portions 20 (9th, 11, 13, 15 supply lines L9, L11, L13, L15) are stopped and the other pre-feeding portions 20 are driven).
The seventh position (the third to eighth pre-feeding portions 20 (the fifth, seventh, ninth, eleventh, thirteenth and fifteenth supply lines L5, L7, L9, L11, L13, and L15) is stopped, and other pre-feeding operations are performed. State in which the unit 20 is driven).
Eighth position (a state in which all the front feeding parts 20 are stopped).

The operation lever 83 and the lever guide 84 have the following first to eighth positions.
First position (a state in which all the rear pay-out portions 48 are driven).
Second position (a state in which the first and second rear feed portions 48 (second and fourth supply lines L2 and L4) are stopped and the other rear feed portions 48 are driven).
Third position (1st to 4th rearwardly extending portion 48 (second, fourth, sixth, and eighth supply lines L2, L4, L6, and L8) is stopped and the other rearwardly extending portions 48 are driven) .
The fourth position (the first to fifth rear-feeding portions 48 (second, fourth, sixth, eighth, and tenth supply lines L2, L4, L6, L8, and L10) are stopped, and the other rear-feeding portions 48 are driven. State).
5th position (The state where the 6th and 7th back extension parts 48 (the 12th and 14th supply lines L12 and L14) stopped, and other back extension parts 48 were driven).
Sixth position (a state in which the fifth to seventh rearward feeding portions 48 (the tenth, twelfth and fourteenth supply lines L10, L12, and L14) are stopped and the other rearward feeding portions 48 are driven).
The seventh position (the third to seventh pre-feeding portions 20 (the sixth, eighth, tenth, twelfth and fourteenth supply lines L6, L8, L10, L12, and L14) is stopped, and the other rear feeding portions 48 are driven. State).
Eighth position (a state in which all the rear feeding portions 48 are stopped).

  In a normal state, the operation levers 80 and 83 are operated to the first position, and all the front and rear feeding portions 20 and 48 are driven. When seed rice is not partially supplied to the rice field G, the operation levers 80 and 83 are operated to the same position, for example, if the operation lever 80 is operated to the second position, the operation lever 83 is also operated to the second position. Yes, the stopping state of the front and rear feeding units 20, 48 is as described above.

[12]
Next, a structure for adjusting the feed amount of the front and rear feed units 20 and 48 will be described.
As shown in FIGS. 4 and 8, an adjustment gear 20 b that adjusts the feed amount of the front feed portion 20 is provided on the right side surface of the front feed portion 20. A single operation shaft 85 is installed in the left and right direction so as to be rotatable and slidable in the axial direction across the front feeding portion 20, and eight adjustments are made so as to correspond to the adjustment gear 20 b of the front feeding portion 20. A gear 85 a is connected to the operation shaft 85. A handle portion 85b is provided at the right end portion of the operation shaft 85, and the adjustment gear 20b of the front feeding portion 20 and the adjustment gear 85a of the operation shaft 85 are not engaged with each other in a normal state.

  As shown in FIGS. 4, 10, and 11, an adjustment gear 48 b that adjusts the feeding amount of the rear feeding portion 48 is provided on the right side surface of the rear feeding portion 48. A single operation shaft 86 is installed in the left and right direction so as to be rotatable and slidable in the axial direction over the rear extending portion 48, and seven adjustments are made so as to correspond to the adjusting gear 48b of the rear extending portion 48. A gear 86 a is connected to the operation shaft 86. A handle portion 86b is provided at the right end portion of the operation shaft 86, and the adjustment gear 48b of the rear extension portion 48 and the adjustment gear 86a of the operation shaft 86 are not engaged with each other in a normal state.

With the above structure, when adjusting the feed amounts of the front and rear feed portions 20, 48, the operation shafts 85, 86 are slid to the right, and the adjustment gears 85a, 86a of the operation shafts 85, 86 are moved forward and rear. The adjusting gears 20b and 48b of the feeding parts 20 and 48 are engaged with each other.
Thereafter, the operating shafts 85 and 86 are rotated by the handle portions 85b and 86b of the operating shafts 85 and 86, and the adjustment gears 20b and 48b of the front and rear feeding units 20 and 48 are rotated, so that the front and rear feeding units are rotated. Adjust the feeding amount of 20,48. In this case, the feed amounts of all the front feed units 20 can be adjusted simultaneously, and the feed amounts of all the rear feed units 48 can be adjusted simultaneously.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention], when a fertilizer applying device for supplying fertilizer to the rice field G is provided, the configuration is as follows.
The fertilizer application system includes a hopper (not shown) for storing fertilizer, a feeding part (not shown) for feeding the fertilizer from the hopper, a grooving device 94 for forming a groove for supplying fertilizer to the rice field G, a feeding part and a working part. A hose (not shown) for connecting to the groove 94 and a blower (not shown) for generating wind for conveying fertilizer are provided.

  A hopper, a feeding part and a blower are provided at the rear part of the fuselage, and a grooving device 94 is provided in the floats 31 and 32. When the hopper fertilizer is fed out by the feeding part, the fertilizer passes through the hose by the blower wind. It is supplied to the groove generator 94 and supplied to the groove formed on the surface G by the groove generator 94.

In the above configuration, as shown in FIG. 16, the eight groove generators 94 are arranged between the first and second supply lines L1 and L2, between the third and fourth supply lines L3 and L4, and between the fifth and fifth supply lines L1 and L4. 6 between supply lines L5 and L6, between 7th and 8th supply lines L7 and L8, between 8th and 9th supply lines L8 and L9, between 10th and 11th supply lines L10 and L11, and 12th. And the floats 31 and 32 so as to be located between the thirteenth supply lines L12 and L13 and between the fourteenth and fifteenth supply lines L14 and L15.
In the above-mentioned [Mode for Carrying Out the Invention], when a groove cutter 87 for forming a drainage groove is provided on the surface G, the groove cutter 87 is connected to the guard member 19 as shown in FIG. May be.

[Second Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention], in the case where the groove surface 87 for forming the drainage groove is provided on the surface G, the following configuration may be adopted.
As shown in FIGS. 17, 18, and 19, a central portion 87 a having a triangular shape with a cross section pointing downward, and a flat plate-like horizontal plate portion 87 b extending to the right and left sides of the central portion 87 a, and a groove A cutting device 87 is configured, and the groove cutting device 87 is supported so as to be swingable up and down around the horizontal axis P7 at the lower end portion of the frame 62. In the grooving device 87, the position of the horizontal plate portion 87b with respect to the central portion 87a can be changed up and down around the horizontal axis P7. Thus, a drainage groove is formed on the surface G by the central portion 87a of the groove cutter 87, and mud that rises to the right and left side of the groove is pressed by the horizontal plate portion 87b of the groove cutter 87. Smooth.

  As shown in FIGS. 18 and 19, a bracket 88 is connected to the horizontal frame 6, and the rod 89 extends over one of the connection holes 88 a of the bracket 88 and the rear portion of the central portion 87 a of the groover 87. Are connected, and the lower limit position of the rear portion of the groove cutter 87 is determined by the rod 89. A spring 90 is attached to the rod 89 so that the rear portion of the groove cutter 87 is allowed to move upward from the lower limit position, and the rear portion of the groove cutter 87 is pressed by the spring 90. Thereby, the lower limit position of the rear part of the groove cutter 87 can be changed up and down by changing the connection hole 88a of the bracket 88 to which the rod 89 is connected.

  As shown in FIG. 17, when the groove cutter 87 is provided, the groove cutter 87 is located in the fourth and twelfth supply lines L4 and L12. The rear wheel 2 is set at a position where the tread is slightly narrower than the position of the rear wheel 2 shown in FIG. 7, and the rear wheel 2 is set immediately before the groove cutter 87. The leveling member 65 shown in FIG. 7 is not provided, but two leveling members 67 are provided on the right and left sides of the grooving device 87.

As shown in FIG. 17, when the groove cutter 87 is positioned on the fourth and twelfth supply lines L4 and L12, seeds cannot be supplied to the fourth and twelfth supply lines L4 and L12. As shown in FIG. 20, the seed hoppers 48 corresponding to the fourth and twelfth supply lines L4 and L12 are not fed into the rear feeding portion 48, and the rear hopper 47 corresponding to the fourth and twelfth supply lines L4 and L12 is provided. The cover plate 91 is attached.
In this case, the cover plate 91 may not be used, and the rear feeding portion 48 corresponding to the fourth and twelfth supply lines L4 and L12 may not be provided.

[Third Another Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention], when the outer auxiliary wheel 92 and the inner auxiliary wheel 93 are provided for the rear wheel 2, the following configuration is provided.
As shown in FIG. 21, the rear wheel 2 is set at a position where the tread is slightly narrower than the position of the rear wheel 2 shown in FIG. 7 (the same position as in FIG. 17), and the outer and inner auxiliary wheels 92 and 93 are moved. Connect to the rear wheel 2. The leveling member 65 shown in FIG. 7 is not provided, but the three leveling members 67 are provided.

[Fourth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] [Second Alternative Embodiment of the Invention] [Third Alternative Embodiment of the Invention], FIG. 4 and FIG. The operation levers 80 and 83 are eliminated, and two electric motors (not shown) for rotating the operation shafts 79 and 82 and a single operation switch (not shown) are provided. The operation shafts 79 and 82 may be operated to the first to eighth positions by the electric motor when operated to the eight to eight positions.

[Fifth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Form of the Invention] to [Fourth Different Form of the Invention], the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55 and The structure in which the guide member 57 is operated in the working and non-working postures around the horizontal axis P6 may be eliminated, and the horizontal frames 8 and 9 may be connected to the right and left vertical frames 16 so as not to rotate.
In this case, the right and left end portions of the horizontal frame 8 shown in FIGS. 5 and 8 may be extended downward and connected to the right and left vertical frames 16. You may comprise so that one hopper (not shown) may be connected over the upper part of the front and back extension parts 20 and 48. FIG.

[Sixth Embodiment of the Invention]
In the above-mentioned [Mode for carrying out the invention] [First embodiment of the invention] to [Fifth embodiment of the invention], when the seed coated with iron coating is supplied to the rice field G, groove formation is performed. The containers 27 and 55 are abolished so that the seeds fed from the front and rear feeding parts 20 and 48 are supplied to the surface G where no groove is formed.
When supplying the seed rice subjected to the calpa coating process to the rice field G, the groove generators 27 and 55 are configured so that a slightly deep groove is formed in the rice field G, and the seed rice is supplied to this groove. A soil covering member (not shown) for refilling the groove is provided behind the grooves 27 and 55.

[Seventh Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Mode of Carrying Out the Invention] to [Sixth Different Mode of Carrying Out the Invention], the front and rear pay-out portions 20 and 48 are set to the following (1) to ( It may be arranged as shown in 12).

(1) As shown in FIG. 22 (1), the seven forward feeding portions 20 (grooving devices 27) are connected to the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6. , L8, L10, L12, L14 (even-numbered supply lines), and eight rear feed portions 48 (grooving devices 55) are arranged in the first, third, fifth, seventh, ninth, eleventh, thirteenth, , 15 supply lines L1, L3, L5, L7, L9, L11, L13, L15 (odd-numbered supply lines) are arranged above.

(2) As shown in (2) of FIG. 22, the seven forward feeding portions 20 (groove forming devices 27) are connected to the first, third, fifth, seventh, ninth, eleventh and thirteenth supply lines L1, L3, L5. , L7, L9, L11, L13 (odd-numbered supply lines), and the same number of seven rear feed portions 48 as the front feed portions 20 are connected to the second, fourth, sixth, eighth, tenth, twelfth, 14 supply lines L2, L4, L6, L8, L10, L12, and L14 (even-numbered supply lines). In this case, the arrangement of the front and rear feeding parts 20 and 48 is asymmetrical.

(3) Contrary to the previous item (2), the seven forward feeding portions 20 (groover 27) are connected to the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8. , L10, L12, and L14 (even-numbered supply lines), and supply the first, third, fifth, seventh, ninth, eleventh, and thirteen rear feed portions 48 as many as the front feed portions 20 Arranged above the lines L1, L3, L5, L7, L9, L11, L13 (odd-numbered supply lines). In this case, the arrangement of the front and rear feeding parts 20 and 48 is asymmetrical.

(4) As shown in FIG. 22 (4), the eight front feeding portions 20 (groove forming devices 27) are connected to the first, third, fifth, seventh, ninth, eleventh, thirteenth and fifteenth supply lines L1, L3. , L5, L7, L9, L11, L13, and L15 (odd-numbered supply lines), and the five rear feed portions 48 are connected to the fourth, sixth, eighth, tenth and twelfth supply lines L4, L6. Arranged above L8, L10, and L12 (even-numbered supply lines).

(5) Contrary to the previous item (4), the five forward feeding portions 20 (groove forming devices 27) are connected to the fourth, sixth, eighth, tenth and twelfth supply lines L4, L6, L8, L10, L12 (even numbers). The eight supply lines L1, L3, L5, L7, L9, L11, and the eight rear feed portions 48 are arranged above the first supply line). It arrange | positions above L13 and L15 (odd number supply line).

(6) As shown in FIG. 22 (6), the eight front feeding portions 20 (groove forming devices 27) are connected to the first, third, fifth, seventh, ninth, eleventh, thirteenth and fifteenth supply lines L1, L3. , L5, L7, L9, L11, L13, L15 (odd-numbered supply lines), and the four rear feed portions 48 are connected to the second, sixth, tenth, and fourteenth supply lines L2, L6, L10, It arrange | positions above L14 (even-numbered supply line).

(7) Contrary to the previous item (6), the four forward feeding portions 20 are arranged above the second, sixth, tenth and fourteenth supply lines L2, L6, L10 and L14 (even-numbered supply lines). , The eight rear feeding portions 48 are connected to the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth supply lines L1, L3, L5, L7, L9, L11, L13, and L15 (odd-numbered supply lines). It arranges above.

(8) In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Sixth Another Mode for Carrying Out the Invention] and in the preceding item (1), the front and rear feeding units 20, 48 Various combinations of numbers such as 7 and 6, 5 and 4, 9 and 8 are set instead of 8 and 7.

(9) In the preceding paragraphs (2) and (3), the number of the front and rear feeding units 20 and 48 is not 7 units, but 8 units, 9 units, 6 units, 5 units, 4 units, etc. Set various numbers as follows.

(10) In the preceding paragraphs (4) and (5), the number of the front and rear payout portions 20, 48 is not 8 and 5, but 8 and 3, 10 and 5, 10 and 7 etc. Various combinations of numbers are set as follows.

(11) In the preceding paragraphs (6) and (7), the number of the front and rear payout portions 20, 48 is not 8 and 5, but 8 and 3, 10 and 5, 10 and 7 etc. Various combinations of numbers are set as follows.

(12) A plurality of supply lines in the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] to [Sixth Alternative Embodiment of the Invention] and the preceding items (1) to (11) Is set to the surface G, the supply line at the right end may be the first supply line L1. In this case, the interval between the adjacent supply lines (predetermined interval W1) may be set slightly narrower than 150 mm or may be set slightly wider.

It is not a paddy field machine that supplies seed surface G with seed buds that have begun to sprout a little in the budding state. Instead, seed surface coated with iron coating, seed cake treated with calpa coating, fertilizers, chemicals, etc. on the surface G It can also be applied to paddy field machines to be supplied.
The front feed unit 20 supplies fertilizer or chemicals to the rice field G, the rear feed unit 48 supplies seed rice to the rice field G, the front feed unit 20 supplies seed rice to the rice field G, and the rear feed unit 48 The present invention can also be applied to a paddy field work machine that supplies different types of granular materials to the field face G, such as a paddy field work machine that supplies fertilizer or chemicals to the field face G.

2 Rear wheel 2a Rear wheel rim part 2b Rear wheel lug part 5 Working device 8 Rear horizontal frame 16 Vertical frame 20 Front extension part 22 Front horizontal frame 23, 46, 47 Hopper 48 Rear extension part C1 Virtual center line C2 Virtual rim Part line C3 Virtual lug part line G Tab surface L1-L15 Supply line W1 Predetermined interval

Claims (8)

Support the work equipment at the rear of the aircraft,
A hopper for storing powder particles, a plurality of pre-feeding portions for feeding and supplying the powder particles of the hopper to the surface, and a plurality of post-feeding portions for feeding and supplying the powder particles of the hopper to the surface. And constituting the working device,
A plurality of supply lines along the front-rear direction are set on the surface with a predetermined interval in the left-right direction, and in the plurality of supply lines, the supply line at one of the left and right ends is the first supply line, and the first Set the odd-numbered supply line and the even-numbered supply line on the other left and right side from the supply line,
The front feeding parts are arranged side by side at a predetermined interval in the left-right direction so as to be positioned above one of the odd-numbered or even-numbered supply lines,
On the rear side of the front feeding part, the rear feeding parts are arranged side by side at a predetermined interval in the left-right direction so as to be positioned above the other supply line of the odd number or even number,
The granular material fed out from the front feeding portion is supplied to the rice field along the odd-numbered or even-numbered supply line, and the granular material fed out from the rear feeding portion is the odd-numbered or even-numbered. A paddy field machine configured to be supplied to the rice field along the other supply line.   The paddy field work machine according to claim 1, wherein the number of the front feeding parts and the number of the rear feeding parts are set to be different.   The paddy field work machine according to claim 2, wherein a difference between the number of the front feeding parts and the number of the rear feeding parts is set to one.   The paddy field work machine according to claim 2 or 3, wherein the number of the front feeding parts is set to be larger than the number of the rear feeding parts.   The paddy field work machine according to any one of claims 1 to 4, wherein the front feeding part and the rear feeding part are arranged at the same height. Set a virtual center line that extends backward from the left and right center of the width of the rear wheel that supports the aircraft,
The position of the supply line in the vicinity of the virtual center line is set so that the granular material is supplied to a position off the right or left side from the virtual center line. Paddy field work machine described in 1. The rear wheel comprises a rim portion on the outer peripheral portion, and a lug portion that is provided at a predetermined interval along the circumferential direction of the rim portion and has a larger lateral width than the rim portion,
Setting a virtual rim part line extending rearward from the left and right ends of the lateral width of the rim part, and a virtual lug part line extending rearward from the left and right ends of the lateral width of the lug part,
The paddy field according to claim 6, wherein a position of a supply line in the vicinity of the virtual center line is set so that powder particles are supplied to a position between the virtual rim part line and the virtual lag part line. Work machine. A front horizontal frame arranged along the left-right direction, a rear horizontal frame arranged along the left-right direction on the rear side of the front horizontal frame, and a vertical frame connected across the front and rear horizontal frames. Comprising the working device,
The paddy field work machine according to any one of claims 1 to 7, wherein the front feeding part is supported by the front lateral frame, and the rear feeding part is supported by the rear lateral frame.

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