JP2015128379A - Ride field implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice field implement having a rice field work device at the back of a machine body and enabled to easily perform a work to form a drainage groove in a field face simultaneously with the direct seeding work (or the planting work), and an intermediate work after the seedling buds (or grows).SOLUTION: While work parts 20 and 48 of the right end part and the left end part are being actuated, specific work parts 20 and 48 out of the remaining work parts 20 and 48 excepting the work parts 20 and 48 of the right end part and the left end part are made freely operable in the actuation and stop states. There are provided groove trenchers 87 corresponding to the specific work parts 20 and 48. There can be freely established: a first state, in which the trencher 87 is operated in a saving position and the specific work parts 20 and 48 are operated in the actuation state; and a second state, in which the trencher 87 is operated in an action attitude and the specific work parts 20 and 48 are operated in the stop state.

Description

  The present invention relates to a paddy field work machine such as a riding type direct sowing machine for direct seeding equipment for supplying seed rice to a rice field, or a riding type rice transplanting machine equipped with a seedling planting device for planting seedlings on a rice field.

  In a riding type direct sowing machine, which is an example of a paddy field work machine, as disclosed in Patent Document 1, eight feeding parts (corresponding to work parts) for supplying seeds to the rice field are spaced apart at predetermined intervals in the left-right direction. In some cases, an eight-row direct seeding device (corresponding to a paddy field working device) is configured, and the direct seeding device is supported at the rear of the machine body. As a result, seed pods are supplied to the rice field over 8 strips at predetermined intervals (intervals between supply lines, strips) in the left-right direction (direct sowing operation).

  In this case, it is common for the riding type direct sowing machine to supply seed pods over the entire surface of the paddy field. Similarly, in the riding type rice planting machine equipped with a seedling planting device for planting seedlings on the paddy field, the entire surface of the paddy field It is common to plant seedlings over the entire area. As a predetermined interval (interval of supply line, interval), a general 300 to 250 mm or a denser 150 mm may be set.

JP 2011-200151 A

In general, drainage grooves may be formed on the rice field at the same time as the direct sowing operation (planting operation). After direct seeding work (planting work), after the seedlings germinate (grow), intermediate work such as weeding work or drug spraying work may be performed.
The present invention provides a paddy field machine that facilitates an operation for forming drainage grooves on the rice field at the same time as a direct sowing operation (planting operation) and an intermediate operation after seedlings germinate (grow). It is an object.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a paddy field work machine.
A paddy field working device is installed at the rear of the aircraft,
A plurality of working parts for supplying seed pods or planting seedlings on the rice field are arranged side by side with a predetermined interval in the left-right direction to constitute the paddy field working device,
With the working parts at the right end and the left end being operated, the specific working part among the remaining working parts excluding the working part at the right end and the left end can be operated in an activated and stopped state. To configure
The paddy field work device is provided with a grooving device capable of changing its posture between an action posture for grounding a rice field corresponding to the specific working unit to form a drainage groove and a retracting posture away from the rice field,
A first state in which the grooving device is operated in a retracted position and a specific working unit is operated; a first state in which the grooving device is operated in an operating posture and a specific working unit is operated in a stopped state. Equipped with an operation mechanism that can display two states.

(Operation and effect of the invention)
[I] -1
According to the first feature of the present invention, when a specific working part is operated in a stopped state (when seed pods are not supplied to the rice field corresponding to the specific working part (when seedlings are prevented from being planted)), this operation is performed. In conjunction with this, the grooving device is changed to the working posture.
Thereby, when a specific working part is operated in a stopped state and direct sowing work (planting work) is performed, seeds are not supplied to the surface corresponding to the specific working part (in a state where seedlings are not planted), The seeds are supplied to the rice field from the remaining working parts (seedlings are planted), and at the same time as the direct sowing work (planting work), drainage grooves are formed on the rice field corresponding to the specific working part without difficulty. Is done.

[I] -2
In the state described in [I] -1, the groove on the surface corresponding to the specific working part can be used for drainage, and when the seedlings germinate (grow) after this, it corresponds to the specific working part. Since there are no seedlings in the part of the paddy field, the part of the paddy field where the seedling does not exist is formed in the paddy field like a single road.

As a result, when intermediate work is performed, the worker enters the paddy field through the part of the paddy field where no seedling exists, so that the worker can easily enter the paddy field and avoid intermediate work while avoiding stepping on or overturning the seedling. It can be performed.
Similarly, when carrying out intermediate work with a riding type management machine in a paddy field, the wheels of the riding type management machine step on or knock down the seedling by positioning the riding type management machine wheel on the paddy field where no seedling exists. It is possible to easily put a riding type management machine into a paddy field and perform intermediate work.

For example, when the predetermined interval is set to a dense state such as 150 mm, it may be disadvantageous in terms of ventilation of paddy fields.
In this case, if the specific working unit is operated in a stopped state, the portion of the rice field where no seedlings exist becomes a passage for the wind, so that the paddy field can be well ventilated.

[I] -3
As described in [I] -1 and 2 above, when a specific working part is operated in a stopped state and direct sowing work (planting work) is performed, a portion of the rice field where seedlings do not exist is generated. May be disadvantageous.
As a result, when there is little need to form a drainage groove or when there is little need for intermediate work, direct seeding work (planting work) is performed by operating a specific working part and the entire surface of the paddy field. It is sufficient to supply seed pods over the entire area (sown seedlings may be planted).

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the paddy field working machine of the first feature of the present invention.
The working part at the right end is located right laterally outside the rear position of the right rear wheel of the fuselage, and the working part at the left end is located laterally laterally outside the rear position of the left rear wheel of the fuselage. And
The working unit located behind the rear wheel of the machine body is defined as the specific working unit.

(Operation and effect of the invention)
Growing is formed by the passage of the rear wheel, and the part of the rice field at the rear position of the rear wheel is often rough. Planting) can be disadvantageous in terms of subsequent germination (growth) of seedlings.

According to the second feature of the present invention, since the working part located behind the rear wheel of the machine body is a specific working part, even if the specific working part is operated in the stopped state, as described above, In the disadvantageous position, the supply of seed pods (planting of seedlings) will be stopped.
Thereby, by operating a specific working part in a stopped state, it is possible to reduce the state where seed pods are supplied to the disadvantageous part of the rear position of the rear wheel (planting of seedlings), and seedling germination It is possible to reduce the situation that is disadvantageous in terms of (growth).
On the contrary, if a groove by the passage of the rear wheel is formed on the surface corresponding to the specific working part, the groove for drainage can be easily formed by the groove cutter on the surface corresponding to the specific working part. it can.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the paddy field working machine of the first or second feature of the present invention.
Each of the working parts includes a clutch member capable of transmitting and closing power to the working parts.
By operating the clutch member of the specific working unit to the disconnected state, the specific working unit is operated to be stopped.

(Operation and effect of the invention)
[III] -1
When a paddy field working apparatus is configured by arranging a plurality of working parts side by side at predetermined intervals in the left-right direction, each working part may be provided with a clutch member capable of transmitting and cutting power to the working part.
Therefore, in the normal usage form of the clutch member so far, according to the outer shape of the paddy field, for example, the working part of the first supply line (first article) is operated in a stopped state, or the first and second supply Operate the working part of the line (first and second article) in the stopped state, operate the working part of the first, second and third supply lines (first, second and third article) in the stopped state, , 2, 3 and 4 supply lines (first, second, third and fourth) may be operated in a stopped state (function as a small number of clutches).

  As described above, in the normal use form of the clutch member so far, the operation part is operated in a stopped state in order from the working part of the left end part (right end part), and the working part of the right end part and the left end part is operated. Thus, the intermediate working part is not operated to be stopped (for example, the third working part is operated in the state in which the working part of the first, second, fourth, supply line (first, second, fourth, etc.) is operated). The operating part of the supply line (Article 3) is not operated in the stopped state).

[III] -2
According to the third feature of the present invention with respect to the state described in [III] -1, the clutch member which is an existing member in the conventional usage form (function as a minority clutch) of the clutch member so far It is configured to operate a specific working part in a transmission and stop state by an operation mechanism in a usage mode contrary to the normal usage mode (function as a minority clutch) of the conventional clutch member. doing.

  Thereby, according to the 3rd characteristic of this invention, the clutch member of a specific working part is the normal use form (function as a minority clutch) of a conventional clutch member, and the usual clutch member of the past It is used in two usage modes, that is, a usage mode using an operating mechanism that is contrary to the usage mode (function as a small number of clutches), which is advantageous in terms of simplification of the structure.

[IV]
(Constitution)
A fourth feature of the present invention resides in the following configuration in the paddy field working machine of the third feature of the present invention.
A human-operated operation tool that is operated artificially is provided at the front part of the paddy field work device as the operation mechanism, and is provided above the upper part of the rear part of the link mechanism that is provided at the rear part of the machine body and supports the paddy field work device so as to be movable up and down In addition, arrange the handle part of the artificial operation tool,
The artificial operating tool and the grooving device are mechanically linked, and the artificial operating tool and the clutch member of the specific working unit are mechanically linked, and the first and the second are operated by the artificial operating tool. Two states are displayed.

(Operation and effect of the invention)
The paddy field work device is provided with a manipulator, and the manipulator, the grooving device, and the clutch member of the specific working portion are mechanically linked, and the grooving device and the clutch member of the specific working portion are connected by the manipulator. When configured to operate, according to the fourth feature of the present invention, the rear part of the link mechanism provided with the human operation tool at the front part of the paddy field work device and provided at the rear part of the machine body so as to freely move the paddy field work device The handle part of the artificial operation tool is arranged above the upper part of.
As a result, the operator of the fuselage can easily hold the handle part of the manipulator by extending the hand to the rear. The clutch member of the part can be easily operated.

[V]
(Constitution)
The fifth feature of the present invention resides in the following configuration in the paddy field working machine of the fourth feature of the present invention.
The lower part of the artificial operation tool is connected to the groove cutter, and the artificial operation tool is operated in the vertical direction, so that the groove cutter can be operated in an action and a retracted posture.

(Operation and effect of the invention)
As described in the preceding item [I] -1, the grooving device is grounded to the surface corresponding to the specific working unit to form a draining groove, and the retracted posture is spaced upward from the surface. When configured to be changeable, the grooving device moves up and down over the action and retracted posture.
According to the fifth aspect of the present invention, by connecting the lower part of the human operation tool to the grooving device, the human operation tool and the grooving device are mechanically linked to operate the human operation tool in the vertical direction. Since the grooving device is configured to be freely operable and retracted, the operation of the manipulator is directly transmitted to the grooving device, and the grooving device is operated in the vertical direction. The grooving device can be operated to the working and retracted posture without difficulty.

[VI]
(Constitution)
A sixth feature of the present invention resides in the following configuration in the paddy field working machine of the fourth or fifth feature of the present invention.
By specifying a wire by connecting a wire between the artificial operating tool and the clutch member of the specific working unit, and operating the clutch member of the specific working unit to the transmission and shut-off state by the artificial operating tool. The working part is configured to be freely operable and in a stopped state,
The artificial operation tool side portion of the wire is set downward, and the wire is connected to the artificial operation tool.

(Operation and effect of the invention)
In the description of [IV] and [V], when the artificial operating tool and the clutch portion of the specific working portion are mechanically linked, a wire is connected across the artificial operating tool and the clutch member of the specific working portion. There are many cases.
According to the sixth aspect of the present invention, when a wire is connected to the artificial operation tool, the artificial operation tool side portion of the wire is set downward and the wire is connected to the artificial operation tool. In the side portions, car wash water, rainwater, and the like rarely enter the inside of the outer wire.

  As described in the previous item [V], when the grooving device is configured to be freely operated and retracted by manipulating the artificial operation tool in the vertical direction, as in the sixth feature of the present invention, When the artificial operation tool side part is set downward and the wire is connected to the artificial operation tool, the vertical operation of the artificial operation tool is transmitted to the wire without difficulty, and the clutch member of a specific working part is operated without difficulty. The

[VII]
(Constitution)
According to a seventh aspect of the present invention, in any one of the paddy field working machines according to the fourth to sixth aspects of the present invention, the seventh aspect is configured as follows.
By specifying a wire by connecting a wire between the artificial operating tool and the clutch member of the specific working unit, and operating the clutch member of the specific working unit to the transmission and shut-off state by the artificial operating tool. The working part is configured to be freely operable and stopped,
The clutch member side portion of the wire is arranged along the operation direction of the clutch member of the specific working unit.

(Operation and effect of the invention)
In the description of [IV], [V], and [VI], when the artificial operating tool and the clutch portion of the specific working portion are mechanically linked, a wire is stretched between the artificial operating tool and the clutch member of the specific working portion. Are often connected.
According to the seventh feature of the present invention, when a wire is connected to the clutch member of a specific working part, the clutch member side portion of the wire is arranged along the operation direction of the clutch member of the specific working part. The operation of the wire is transmitted without waste to the clutch member of the specific working unit, and the clutch member of the specific working unit is operated without difficulty.

[VIII]
(Constitution)
The eighth feature of the present invention resides in the following configuration in the paddy field working machine of the sixth or seventh feature of the present invention.
The wire is connected across the artificial operating tool and the clutch member of the specific working unit so that the wire has an arc shape protruding laterally in plan view.

(Operation and effect of the invention)
As described in [VI] and [VII] in the previous section, when a wire is connected across the artificial operating tool and the clutch member of the specific working unit, the artificial operating tool is provided at the front of the paddy field work device. Therefore, the wire may be connected while being bent instead of being linear.
According to the eighth aspect of the present invention, the wire is connected across the artificial operating tool and the clutch member of the specific working unit so that the wire has an arc shape protruding laterally in plan view. As a result, the wire can be bent and connected with a large radius while avoiding a state in which the wire greatly protrudes upward from the paddy field work apparatus, and the operation of the wire is not hindered.

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 production device, a float, a rear wheel, a groove cutting device, 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, a groove cutter, and a leveling member. It is a perspective view of a groove cutter. (A) It is a side view which shows the 2nd state of an operation rod, and the action attitude | position of a groove cutter, (B) It is a side view which shows the 1st state of an operation rod, and the retracting attitude | position of a groove cutter. It is a vertical side view of the vicinity of the support plate that holds the operation rod (engagement member) in the first and second states. It is a cross-sectional top view of the vicinity of the support plate which hold | maintains an operation rod (engagement member) in a 1st and 2nd state. It is a top view which shows the working form of a riding type direct seeding machine. In 5th another form of implementation of this invention, it is a schematic plan view which shows arrangement | positioning of the 1st-15th supply line, a front, and a 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 type direct seeding device 5 (corresponding to paddy field working device) that supplies seed rice in a seeding state in which buds have begun to emerge a little in the sprouting state or iron-coated seed rice seedling to the surface G 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, horizontal frames 6, 8, 9 in the left-right direction are provided, and right and left vertical frames in the front-rear direction across the right and left ends of the horizontal frames 6, 8, 9. 16 are connected, and four longitudinal 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 hitch frame 14 (corresponding to the rear portion of the link mechanism) in the vertical direction, and the rolling shaft 13 is rotatably supported by the boss portion 14 a of the hitch frame 14. The right and left springs 15 are connected to the upper part of the hitch frame 14 and the upper part of the frame 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 is The direct seeding device 5 is held so as not to roll by hitting the receiving portion 6a of the horizontal frame 6.

[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 an action posture in which a ground is formed on the surface G and a mark is formed on the surface G, and 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 direct seeding 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. The rake-like leveling member 65 is bolted to the front surface of the mudguard plate 64, and the position of the leveling member 65 connected to the mudguard plate 64 can be adjusted up and down in the range of the long hole 65 a of the leveling member 65.

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 | standard attitude | position shown in FIG. 12, and the direct sowing apparatus 5 is maintained by the setting height from the surface G (elevation 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, a support structure for the front hopper 23 and the front feeding portion 20 (corresponding to a working portion) 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 in the horizontal direction is connected to the upper end portion of the frame 21. The front feeding portion 20 is connected to the horizontal frame 22 side by side with a predetermined interval in the left-right direction. Front hoppers 23 are connected to the upper portions of the two front payout portions 20, and four identical front hoppers 23 are provided for the eight front payout portions 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 (corresponding to the working portion) 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 is connected to the upper part of the central three rear feeding portions 48. A rear hopper 47 is connected to the upper part of the two right rear rear extending portions 48 and the left two rear forward portions 48, and two identical rear hoppers 47 are connected to the four rear forward portions 48. 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 3 and the direct seeding device 5, and the height of the groove forming device 55 tends to be lower than the height of the groove forming device 27. After setting the height of the groove forming device 27 so that the lower end portion of the groove forming device 27 is located slightly below the bottom surface of the groove forming device 27, 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 (No. 1).
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 feed portion 20 (seventh supply line L7) and the fifth front feed portion 20 (ninth 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 arrangement of the front and rear feeding units 20 and 48 will be described (No. 2).
As shown in FIGS. 3 and 7, a sixth rear feed portion 48 (a twelfth supply line L12) (corresponding to a specific working portion) is located behind the right rear wheel 2, and the left rear wheel. A second rear feeding portion 48 (fourth supply line L4) (corresponding to a specific working portion) is located behind 2.

  As shown in FIG. 3 and FIG. 7, the seventh and eighth forward feed portions 20 (the thirteenth and fifteenth supply lines L13 and L15) (corresponding to the working portion at the right end) and the seventh rear feed portion 48 ( The fourteenth supply line L14) (corresponding to the working portion at the right end) is located on the right lateral outer side with respect to the rear position of the right rear wheel 2 (the twelfth supply line L12).

  As shown in FIG. 3 and FIG. 7, the first and second forward feed portions 20 (first and third supply lines L1 and L3) (corresponding to the left end working portion), and the first rear feed portion 48 ( The second supply line L2) (corresponding to the working portion at the left end) is located on the left lateral outer side with respect to the rear position of the left rear wheel 2 (fourth supply line L4).

  As shown in FIGS. 3 and 7, between the rear position of the right rear wheel 2 (the twelfth supply line L12) and the rear position of the left rear wheel 2 (the fourth supply line L4), 3, 4, 5th and 6th forward feed sections 20 (5th, 7th, 9th and 11th supply lines L5, L7, L9 and L11) and 3rd, 4th and 5th rear feed sections 48 (6th, 8th and 10th supplies) Lines L6, L8, L10) are located.

[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 correspond to each of the eight front feeding portions 20, so that eight clutch members are provided. 73b is externally fitted to the transmission shaft 73 so as to be integrally rotatable and slidable, and a spring 73c that biases 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 75 a are externally fitted to the transmission shaft 75 so as to correspond to each of the seven rearwardly extending portions 48, so that the seven clutches A member 75b is externally fitted to the transmission shaft 75 so as to be integrally rotatable and slidable, and a spring 75c that urges the clutch member 75b toward the engagement 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 transmission state in which 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 input to the front feeding portion 20 from the output gears 73a and 75a of the transmission shafts 73 and 75. The transmission is transmitted to the gear 20a (the input gear 48a of the rear feeding portion 48), and the front feeding portion 20 (the rear feeding portion 48) is operated (operation state).

[11]
Next, a structure for operating the front and rear feeding parts 20, 48 to operate and stop will be described (function as a small number of clutches).
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. A lever-like operation tool 80 is connected to the right end of the operation shaft 79, and a disk-shaped operation tool guide 81 is connected to the right end 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. A lever-like operation tool 83 is connected to the right end portion of the operation shaft 82, and a disk-like operation tool guide 84 is connected to the right end portion of the horizontal frame 8.

  With the above structure, the operation shafts 79 and 82 are rotated by the operation tools 80 and 83, and the clutch members 73b and 73b of the transmission shafts 73 and 75 are driven by the cam members 79a and 82a of the operation shafts 79 and 82, as will be described later. 75b is moved away from the output gears 73a and 75a against the springs 73c and 75c to be in a shut-off state, and the front and rear pay-out portions 20 and 48 are stopped (stop state).

The operation tool 80 and the operation tool guide 81 have the following first to eighth positions.
1st position (all the front feeding parts 20 are operating states).
Second position (1st and 2nd pre-feeding portions 20 (first and third supply lines L1 and L3) are in a stopped state, and other pre-feeding portions 20 are in an operating state).
3rd position (1st-4th front extension part 20 (1st, 3, 5, 7 supply line L1, L3, L5, L7) is a stop state, and other front extension parts 20 are the operation states).
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 in a stopped state, and other pre-feeding operations are performed. Part 20 is in an operating state).
The fifth position (the seventh and eighth pre-feeding portions 20 (the thirteenth and fifteenth supply lines L13 and L15) are stopped, and the other pre-feeding portions 20 are in an operating state).
Sixth position (5th to 8th pre-feeding portions 20 (9th, 11th, 13th, 15th supply lines L9, L11, L13, L15) are in a stopped state, and the other pre-feeding portions 20 are in operation).
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 in a stopped state, and other pre-feeding operations are performed. Part 20 is in an operating state).
8th position (all the front feeding parts 20 are a stop state).

The operation tool 83 and the operation tool guide 84 have the following first to eighth positions.
1st position (all the rear delivery parts 48 are operating).
Second position (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 in an operating state).
3rd position (The 1st-4th back extension part 48 (2nd, 4, 6, 8 supply line L2, L4, L6, L8) is a stop state, and the other back extension parts 48 other than this are operation states).
The fourth position (the 1st to 5th post-feeding portions 48 (the second, fourth, sixth, eighth, and tenth supply lines L2, L4, L6, L8, and L10) are stopped, and the other post-feeding portions 48 are activated. State).
5th position (The 6th and 7th back extension parts 48 (the 12th and 14th supply lines L12 and L14) are in a stop state, and other back extension parts 48 are in an operation state).
Sixth position (the fifth and seventh rear feed portions 48 (the tenth, twelfth, and fourteenth supply lines L10, L12, and L14) are stopped, and the other rear feed portions 48 are in an operating state).
The seventh position (the third to seventh pre-feeding sections 20 (the sixth, eighth, tenth, twelfth and fourteenth supply lines L6, L8, L10, L12, and L14) is stopped, and the other rear feeding sections 48 are operated. State).
Eighth position (all post-feeding portions 48 are stopped).

  In a normal state, the operating tools 80 and 83 are operated to the first position, and all the front and rear pay-out portions 20 and 48 are set in an operating state. When seed rice is not partially supplied to the rice field G, the operation tools 80 and 83 are operated to the same position, such as if the operation tool 80 is operated to the second position, the operation tool 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, the groove cutter 87 will be described.
As shown in FIGS. 5 and 7, the rear position of the right and left rear wheels 2 and the front position (front) of the specific rear extension 48 (fourth and twelfth supply lines L4 and L12) in plan view. A grooving device 87 is disposed on the feeding portion 20 (front side of the front hopper 23).

  As shown in FIGS. 5, 15, and 16, the grooving device 87 includes a central portion 87 a having a triangular shape whose section is convex downward, and a flat plate-like shape extending laterally to the right and left sides of the central portion 87 a. The lateral side portion 87b is supported by the lower end portion of the frame 62 so as to be swingable up and down around the horizontal axis P7. The position of the lateral side portion 87b with respect to the central portion 87a of the grooving device 87 is configured to be vertically changeable around the horizontal axis P7, and the lateral side portion 87b is fixed to the central portion 87a by a bolt 88.

As shown in FIGS. 5 and 7, the front portion of the central portion 87 a of the groove cutter 87 is located behind the leveling member 65, and the rear portion of the central portion 87 a of the groove cutter 87 is between the floats 31 and 32. positioned. The lateral side portion 87 b of the grooving device 87 is located behind the leveling member 67 and is located in front of the floats 31 and 32.
Thus, the drainage groove M 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 drain groove M is Press at 87b to smooth.

[13]
Next, a structure for changing the posture of the grooving device 87 to the working and retracting posture will be described.
As shown in FIGS. 5, 8, and 19, a pair of support plates 90 are connected to a portion of the horizontal frame 12 positioned above the groove cutter 87 and extend forward. A pin 90 a is connected between the front portions of the support plate 90, and the pin 90 b is inserted between the front portions of the support plate 90, so that the pins 90 b protrude to both lateral sides of the support plate 90. ing.

  As shown in FIGS. 18 and 19, a long hole 90 c is formed in a portion of the support plate 90 between the pin 90 a and the lateral frame 12, and the pin 89 is inserted across the long hole 90 c of the support plate 90. The pin 89 is supported so as to be movable along the long hole 90 c of the support plate 90. A pair of springs 91 are connected across the pins 90b and 89 of the support plate 90 on both lateral sides of the support plate 90, and the pin 89 is biased toward the pin 90a of the support plate 90 by the spring 91. ing.

  As shown in FIGS. 1, 2, and 3, an operating rod 92 (corresponding to an operating mechanism and an artificial operating tool) is arranged vertically on the right and left sides of the front portion of the direct seeding device 5, 19, the operation rod 92 is inserted between the support plate 90 and between the pin 90 a and the pin 89 of the support plate 90. The upper portion of the operating rod 92 extends obliquely forward and the handle portion 92a at the upper end of the operating rod 92 is viewed from the side, and the front and rear hoppers 23, 46, 47 (lid portions 23a, 46a, 47a). ) Above and above the upper portion of the hitch frame 14.

  As shown in FIGS. 5, 15, and 16, the lower portion of the operation rod 92 is inserted into the opening at the rear portion of the central portion 87 a of the groove cutter 87, and a nut 93 is attached to the lower portion of the operation rod 92. A spring 94 is externally fitted to the operating rod 92 in a compressed state between a spring receiver 92 b fixed to 92 and a central portion 87 a of the groove cutter 87. Accordingly, the lower portion of the operation rod 92 is connected to the rear portion of the central portion 87 a of the groove cutter 87 by the nut 93 and the spring 94.

  As shown in FIGS. 5, 8, and 19, a flat engagement member 96 is connected to the intermediate portion of the operation rod 92 in the vertical direction, and the engagement member 96 is between the support plates 90 and the pin 90 a of the support plate 90. And the pin 89. Recessed engagement portions 96a and 96b are formed above and below the engagement member 96, respectively.

In the state shown in FIG. 17B, the operating rod 92 is operated upward, and the lower engaging portion 96a of the operating rod 92 (engaging member 96) is engaged with the pin 90a of the support plate 90. (First state). In this state, the operation rod 92 (engagement member 96) is pressed against the pin 90a of the support plate 90 by the spring 91 and the pin 89, and the engagement portion 96a below the operation rod 92 (engagement member 96) is supported. It will be in the state which does not remove | deviate from the pin 90a of the board 90. FIG.
In the first state of the operating rod 92 shown in FIG. 17 (B), the groove cutter 87 is operated upward around the horizontal axis P7 by the operating rod 92, so that the retracted posture is separated upward from the surface G.

The state shown in FIG. 17A is a state in which the operating rod 92 is operated downward to engage the engaging portion 96b on the upper side of the operating rod 92 (engaging member 96) with the pin 90a of the support plate 90. Yes (second state). In this state, the operation rod 92 (engagement member 96) is pressed against the pin 90a of the support plate 90 by the spring 91 and the pin 89, and the engagement portion 96b on the upper side of the operation rod 92 (engagement member 96) becomes the support plate. It will be in the state which cannot remove from 90 pins 90a.
In the second state of the operation rod 92 shown in FIG. 17 (A), the groove cutter 87 is operated downward around the horizontal axis P7 by the operation rod 92, and the specific rear extension 48 (fourth and twelfth supply) It becomes an action posture in which a drainage groove M is formed by grounding to the surface G corresponding to the lines L4, L12).

  As shown in FIG. 17 (A), in the groove cutter 87 in the acting posture, the lower limit position of the groove cutter 87 is determined by the nut 93, and the upward swing of the groove cutter 87 is the compression of the spring 94. Allowed by. By changing the position of the nut 93 with respect to the operation rod 92 up and down, the lower limit position of the groove cutter 87 can be changed up and down.

  As shown in FIGS. 1, 2, 3 and 5, the upper portion of the operating rod 92 extends obliquely forward and the handle portion 92a at the upper end of the operating rod 92 is viewed from the side, and the front and rear hoppers are seen. 23, 46, 47 (the lids 23a, 46a, 47a) are located above the upper part of the hitch frame 14, so that the driver of the fuselage reaches out backward, The handle portion 92a of the operation rod 92 can be easily held. Holding the handle portion 92a of the operating rod 92 and operating the operating rod 92 rearward against the spring 91, the engaging portions 96a and 96b of the operating rod 92 (engaging member 96) are connected to the pins 90a of the support plate 90. By disengaging from the above, the operation rod 92 can be operated in the vertical direction to be operated in the first and second states.

  In this case, since the operation rod 92 is provided in each of the right and left groove cutters 87, the right and left groove cutters 87 are operated to the working posture, and the right and left groove cutters 87 are retracted. Operate to the posture, operate the right grooving device 87 to the working posture, operate the left grooving device 87 to the retracted posture, or operate the left grooving device 87 to the working posture, and The device 87 can be operated to the retracted posture.

[14]
Next, the relationship between the specific post-feeding portion 48 (fourth and twelfth supply lines L4 and L12) and the grooving device 87 will be described (No. 1).
As shown in FIGS. 4, 7, and 10, in the horizontal frame 9, a guide member 97 is connected to a portion corresponding to the clutch member 75 b of the specific rear extension 48 (fourth and twelfth supply lines L <b> 4 and L <b> 12). ing. An operation member 98 formed by bending a round bar is supported by a guide member 97 so as to be movable in the left-right direction in parallel with the transmission shaft 75, and one end of the operation member 98 has a specific rear extension portion 48 (fourth portion). And the clutch member 75b of the twelfth supply line L4, L12).

  As shown in FIGS. 7 and 10, the receiving member 9 b is connected to the vicinity of the guide member 97 in the horizontal frame 9. One end of the outer 99b of the wire 99 is connected to the receiving member 9b of the horizontal frame 9 in the left-right direction, and one end of the inner 99a of the wire 99 extends in the left-right direction and is connected to the operation member 98.

  As a result, as shown in FIGS. 7 and 10, the inner 99a and the operation member 98 of the wire 99 are moved in the left-right direction, and the moving directions of the inner 99a and the operation member 98 of the wire 99 are specified. The rear extending portion 48 (fourth and twelfth supply lines L4, L12) is in a state parallel to the transmission direction (operation direction) of the clutch member 75b in the clutch member 75b.

  As shown in FIGS. 5, 17 (A) (B), 18, 19, the receiving member 12 a is connected to a portion of the horizontal frame 12 in the vicinity of the support plate 90, and the other end of the outer 99 b of the wire 99 is lateral. The receiving member 12a of the frame 12 is connected downward. The other end of the inner 99a of the wire 99 extends downward, and the pin 92c connected to the operation rod 92 and the other end of the inner 99a of the wire 99 are connected via the spring 100 for flexibility. Yes.

With the above structure, as shown in FIG. 7, a specific rear extension 48 (fourth supply line L4) and an operation rod 92 (groove) positioned in front of the specific rear extension 48 (fourth supply line L4). The cutting device 87) is connected to the wire 99.
The wire 99 extends upward from the operation rod 92 (the receiving member 12a of the horizontal frame 12), extends downward while bending in an arc shape, and extends to the left lateral outer side while bending in an arc shape. It passes through the left lateral outer side of the first front feed unit 20 (first supply line L1) while turning so as to have a circular arc shape protruding leftward in plan view, and a specific rear feed unit 48 (first 4 supply line L4) is connected to the clutch member 75b (operation member 98).

With the above structure, as shown in FIG. 7, the specific rear extension 48 (the twelfth supply line L12) and the operation rod 92 (groove) positioned in front of the specific rear extension 48 (the twelfth supply line L12). The cutting device 87) is connected to the wire 99.
The wire 99 extends upward from the operation rod 92 (the receiving member 12a of the horizontal frame 12), extends downward while bending in an arc shape, and extends to the left lateral outer side while bending in an arc shape. After passing through between the fourth and fifth front feeding portions 20 (seventh and ninth supply lines L7, L9) while turning so as to form a circular arc projecting leftward in plan view, It is connected to the clutch member 75b (operation member 98) of the feeding portion 48 (the twelfth supply line L12).

[15]
Next, the relationship between the specific post-feeding portion 48 (fourth and twelfth supply lines L4, L12) and the groove cutter 87 will be described (No. 2).
When the operating rod 92 is operated to the first state as shown in FIGS. 7 and 17B by the structure described in [13] and [14], the grooving device 87 is moved by the operating rod 92 to the horizontal axis P7. It is operated upward around and becomes a retracted posture.

As shown in FIGS. 7 and 17B, when the operating rod 92 is operated to the first state, the inner 99a of the wire 99 is simultaneously returned to the operating member 98 side, and a specific post-feeding portion 48 ( The clutch member 75b of the fourth and twelfth supply lines L4 and L12 is in a transmission state by the spring 75c of the transmission shaft 75 (the operating state of the specific rear extension 48 (fourth and twelfth supply lines L4 and L12)) ).
As described in the previous item [11] in the first state, the states of the first to eighth positions described in the previous item [11] are obtained by operating the operation tools 80 and 83 to the first to eighth positions.

When the operating rod 92 is operated to the second state as shown in FIG. 7 and FIG. 17A by the structure described in [13] and [14], the operating rod 92 causes the grooving device 87 to move to the horizontal axis P7. It is operated downward around and becomes an action posture.
When the operation rod 92 is operated to the second state, at the same time, the inner 99a of the wire 99 is pulled toward the operation rod 92, and the clutch of the specific rear extension portion 48 (fourth and twelfth supply lines L4, L12) is operated. The member 75b enters a shut-off state (a specific post-feeding portion 48 (stop state of the fourth and twelfth supply lines L4 and L12)).

As described in [11] above, when the operation rod 92 is operated to the second state in a state where the operation tools 80 and 83 are operated to the first position (all the front and rear extension portions 20 and 48 are in the activated state). , The operating states of all the front feeding sections 20 (first, third, fifth, seventh, ninth, eleventh, thirteenth and fifteen supply lines L1, L3, L5, L7, L9, L11, L13, L15), In the operating state of the third, fourth, fifth and seventh rear feed portions 48 (second, sixth, eighth, tenth and fourteenth supply lines L2, L6, L8, L10 and L14), a specific rear feed portion 48 (fourth And the twelfth supply lines L4, L12) are stopped.
When the operation tools 80 and 83 are operated to the first to eighth positions in the second state as described in the previous item [11], in the respective states of the first to eighth positions described in the previous item [11], a specific after The feeding portion 48 (fourth and twelfth supply lines L4, L12) is stopped.

[16]
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, 8, 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.

[17]
Next, an operation mode of the riding type direct seeder will be described.
For example, as shown in FIG. 20, a riding type direct sowing machine may adopt the following working mode in a square paddy field in plan view.

  First, the machine body is positioned at a position K1 shown in FIG. 20, the direct sowing apparatus 5 is lowered to the surface G, and the direct sowing apparatus 5 is activated to enter the operation process L01. In the work process L01, the left marker 18 is operated to the retracted position, the right marker 18 is operated to the operating position, and the aircraft is driven to perform the direct sowing operation, while the right marker 18 performs the next work process L02. Is formed on the rice field G.

As shown in FIG. 20, when the aircraft reaches the heel from the work process L01, the direct sowing device 5 is stopped and lifted from the rice field G, the turn LL1 (right direction) is performed, and the direct sowing device 5 is lowered to the rice field G. Then, the direct seeding device 5 is put into an operating state and the operation process L02 is entered.
In the work process L02, the right marker 18 is operated to the retracted position, the left marker 18 is operated to the operating position, and the aircraft is caused to travel along the index formed on the surface G in the work process L01. While performing the work, the index of the next work process L03 is formed on the surface G by the left marker 18.

  As shown in FIG. 20, when a plurality of work strokes L01 to L06 and turning LL1 (right direction), LL2 (left direction), LL3 (right direction), LL4 (left direction), LL5 (right direction) are performed, A portion where the direct sowing operation is not performed along the ridge B is formed. In this state, when the aircraft reaches the heel from the work process L06, direct sowing work is performed along the heel B while the right and left markers 18 are operated to the retracted posture.

  In this case, the operating tools 80 and 83 are operated to the first position, and the operating rod 92 is operated to the second state (all the front feeding portions 20 (first, third, fifth, seventh, ninth, eleventh, thirteenth, 15 supply lines L1, L3, L5, L7, L9, L11, L13, L15), the first, third, fourth, fifth and seventh rearward feeding sections 48 (second, sixth, eighth, tenth and fourteenth supplies) Line L2, L6, L8, L10, L14) in the operating state, the specific post-feeding portion 48 (the fourth and twelfth supply lines L4, L12) in the stopped state, the working posture of the grooving device 87), and the working stroke L01. When ˜L06 is performed, two drainage grooves M are formed on the surface G by the grooving device 87 at the passing position of the rear wheel 2 in each of the work strokes L01 to L06.

  As shown in FIGS. 3, 7, and 20, the interval W2 between the two drainage grooves M in each of the work strokes L01 to L06 corresponds to the fourth to twelfth supply lines L4 to L12, and is a predetermined interval W1. 8 times (see FIGS. 3 and 4).

As shown in FIGS. 3, 7 and 20, for example, when the work process L02 is performed, the fifteenth supply line L15 of the work process L02 is spaced a predetermined interval W1 from the fifteenth supply line L15 of the previous work process L01. Run the aircraft so that it is positioned.
Accordingly, the interval W3 between the drainage grooves in the adjacent work steps L01 to L06 corresponds to two times of the twelfth to fifteenth supply lines L12 to L15 (two times of the first to fourth supply lines L1 to L4). Thus, it becomes seven times the predetermined interval W1 (see FIGS. 3 and 4).

As described above, the interval W2 between the two drainage grooves M in each of the work processes L01 to L06 and the interval W3 between the drainage grooves in the adjacent operation processes L01 to L06 are substantially the same value (one predetermined value). Therefore, as shown in FIG. 20, drainage grooves M are formed on the surface G at substantially equal intervals.
In this case, when the right grooving device 87 is operated to the operating posture and the left grooving device 87 is operated to the retracted posture (the left grooving device 87 is operated to the operating posture and the right grooving device 87 is operated. Since the drainage grooves M are formed only on one side in each of the work strokes L01 to L06, the drainage grooves M are formed on the surface G at unequal intervals.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention], the groove cutter 87 at the rear position of the right rear wheel 2 may be eliminated, and the groove cutter 87 may be provided only at the rear position of the left rear wheel 2. In such a configuration, the specific working unit becomes the second post-feeding unit 48 (fourth supply line L4).
The groove cutter 87 at the rear position of the left rear wheel 2 may be abolished, and the groove cutter 87 may be provided only at the rear position of the right rear wheel 2. This is the th rear delivery portion 48 (the twelfth supply line L12).
The groove cutter 87 at the rear position of the right and left rear wheels 2 may be eliminated, and the groove cutter 87 may be provided only at the center CL of the direct seeding device 5. This is the th rear delivery portion 48 (eighth supply line L8).

[Second Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention], instead of the operating rod 92, an operating lever (not shown) that can be operated in the front-rear direction or the left-right direction (not shown) It may be configured such that the grooving device 87 is operated to the action and retracted posture by converting the operation of the operation lever in the front-rear direction (left-right direction) into the operation in the up-down direction.

When the operation lever is configured to be operable in the front-rear direction (left-right direction), the outer 99b of the wire 99 is set in the front-rear direction (left-right direction) and connected to the operation lever. When the operation lever is configured to be freely movable in the left-right direction, the operation direction of the operation lever is parallel to the transmission of the clutch member 75b of the specific working unit and the sliding direction (operation direction) in the shut-off state. It can be easily configured in the shape of an arc projecting sideways to the left as viewed.
In this case, the right and left wires 99 may be configured in a circular arc shape that protrudes rightward in a plan view, and the right wire 99 is configured in a circular arc shape that protrudes leftward in a plan view. The wire 99 may be configured in an arc shape that protrudes to the right in a plan view.

[Third Another Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] [Second Another Mode for Carrying Out the Invention], the operating rod 92 and the operating lever are eliminated, and the grooving device 87 is operated and An electric motor (not shown) for operating in a retracted position (corresponding to an operating mechanism), an electric motor (not shown) for operating a specific working part in an activated and stopped state (corresponding to an operating mechanism), On the basis of an operation signal of an operation switch (not shown) to be operated (corresponding to an artificial operation tool), the grooving device 87 is operated to an action and retracted position by an electric motor, and a specific working unit is activated and stopped by the electric motor You may comprise so that it may be operated by a state.

  The operation tools 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.

[Fourth Embodiment of the Invention]
In the above-mentioned [Mode for carrying out the invention] [First embodiment of the invention] to [Third another 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 may be abolished so that the seeds fed from the front and rear feeding units 20 and 48 are supplied to the surface G where no groove is formed.
In the case where the seed rice subjected to the calpa coating process is supplied 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 the groove. A soil covering member (not shown) for backfilling may be configured to be provided behind the groove producing devices 27 and 55.

[Fifth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] to [Fourth Alternative Embodiment of the Invention], the front and rear pay-out portions 20, 48 are set to the following (1) to ( It may be arranged as shown in 9).

(1) As shown in (1) of FIG. 21, the seven forward feeding portions 20 (groove forming 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.
If comprised in this way, if the rear wheel 2 is located in the 4th and 12th supply line L4, L12, the specific working part of the rear position of the rear wheel 2 will be the 2nd and 6th front extension | drawing-out part 20 ( 4th and 12th supply lines L4, L12).

(2) As shown in (2) of FIG. 21, 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.
If comprised in this way, if the rear-wheel 2 is located in the 4th and 12th supply lines L4 and L12, the specific working part of the rear position of the rear-wheel 2 will be the 2nd and 6th rear delivery part 48 ( 4th and 12th supply lines L4, L12).

(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.
If comprised in this way, if the rear wheel 2 is located in the 4th and 12th supply line L4, L12, the specific working part of the rear position of the rear wheel 2 will be the 2nd and 6th front extension | drawing-out part 20 ( 4th and 12th supply lines L4, L12).

(4) As shown in FIG. 21 (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).
If comprised in this way, if the rear wheel 2 is located in the 4th and 12th supply line L4, L12, the specific operation | work part of the back position of the rear wheel 2 will be the 1st and 5th back extension | feeding part 48 ( 4th and 12th supply lines L4, L12).

(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).
If comprised in this way, if the rear wheel 2 is located in the 4th and 12th supply line L4, L12, the specific operation | work part of the back position of the rear wheel 2 will be the 1st and 5th front extension | drawing-out part 20 ( 4th and 12th supply lines L4, L12).

(6) In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Fourth 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.

(7) 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.

(8) In the preceding paragraphs (4) and (5), the number of the front and rear feeding parts 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.

(9) A plurality of supply lines in the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] to [Fourth Alternative Embodiment of the Invention] and the preceding items (1) to (8) 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.

[Sixth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Fifth Another Mode for Carrying Out the Invention], the front and rear payout portions 20, 48 are not arranged in the front-rear direction. All the feeding parts may be arranged in a line in the left-right direction.
The present invention can also be applied to a riding type rice transplanter provided with a seedling planting device (corresponding to a paddy field working device) (not shown) for planting seedlings on the rice field G in place of the direct sowing device 5 at the rear of the machine body. In this case, in the seedling planting apparatus, a planting arm (not shown) for planting a seedling on the rice field G serves as a working unit, and the interval (predetermined interval) (interval) between adjacent planting arms is generally set. What is necessary is just to be 300-250 mm.

  The present invention is not only a paddy working machine that supplies seed surface G to seed surface G in a state where buds have begun to emerge a little in the sprouting state, but also a riding type that supplies seed surface treated with iron coating and seed material subjected to calpa coating to field surface G. It can also be applied to a direct sowing machine, and it can also be applied to a riding type rice transplanter equipped with a seedling planting device for planting seedlings on a rice field.

2 Rear wheel 3 Link mechanism 5 Paddy field working device 14 Rear part of link mechanism 20, 48 Working part 75b Clutch member 87 Grooving device 92 Operation mechanism, artificial operation tool 92a Handle part 99 Wire G Surface M Groove for drainage

Claims (8)

A paddy field working device is installed at the rear of the aircraft,
A plurality of working parts for supplying seed pods or planting seedlings on the rice field are arranged side by side with a predetermined interval in the left-right direction to constitute the paddy field working device,
With the working parts at the right end and the left end being operated, the specific working part among the remaining working parts excluding the working part at the right end and the left end can be operated in an activated and stopped state. To configure
The paddy field work device is provided with a grooving device capable of changing its posture between an action posture for grounding a rice field corresponding to the specific working unit to form a drainage groove and a retracting posture away from the rice field,
A first state in which the grooving device is operated in a retracted position and a specific working unit is operated; a first state in which the grooving device is operated in an operating posture and a specific working unit is operated in a stopped state. Paddy field work machine equipped with an operation mechanism that can display two states. The working part at the right end is located right laterally outside the rear position of the right rear wheel of the fuselage, and the working part at the left end is located laterally laterally outside the rear position of the left rear wheel of the fuselage. And
The paddy field work machine according to claim 1, wherein the working unit located behind the rear wheel of the machine body is the specific working unit. Each of the working parts includes a clutch member capable of transmitting and closing power to the working parts.
3. The paddy field work machine according to claim 1, wherein the specific working unit is operated in a stopped state by operating the clutch member of the specific working unit in a disconnected state. A human-operated operation tool that is operated artificially is provided at the front part of the paddy field work device as the operation mechanism, and is provided above the upper part of the rear part of the link mechanism that is provided at the rear part of the machine body and supports the paddy field work device so as to be movable up and down In addition, arrange the handle part of the artificial operation tool,
The artificial operating tool and the grooving device are mechanically linked, and the artificial operating tool and the clutch member of the specific working unit are mechanically linked, and the first and the second are operated by the artificial operating tool. The paddy field work machine according to claim 3 constituted so that two states may be revealed.   5. The lower part of the artificial operation tool is connected to the groove cutter, and the artificial operation tool is operated in the vertical direction, whereby the groove cutter is configured to be operable and retracted. The paddy field machine described. By specifying a wire by connecting a wire between the artificial operating tool and the clutch member of the specific working unit, and operating the clutch member of the specific working unit to the transmission and shut-off state by the artificial operating tool. The working part is configured to be freely operable and in a stopped state,
The paddy field work machine according to claim 4 or 5, wherein the artificial operation tool side portion of the wire is set downward and the wire is connected to the artificial operation tool. By specifying a wire by connecting a wire between the artificial operating tool and the clutch member of the specific working unit, and operating the clutch member of the specific working unit to the transmission and shut-off state by the artificial operating tool. The working part is configured to be freely operable and stopped,
The paddy field work machine according to any one of claims 4 to 6, wherein a clutch member side portion of the wire is arranged along an operation direction of the clutch member of the specific working unit.   8. The wire according to claim 6, wherein the wire is connected across the artificial operating tool and the clutch member of the specific working unit such that the wire has an arc shape protruding sideways in a plan view. Paddy field machine.

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