JPH11168909A - Paddy field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the sputtering of mud attached to a line-drawing marker to the machine body in the case of turning the line-drawing marker from a working state to a non-working state. SOLUTION: This paddy field working machine performs farm works on a field while traveling on the field. The machine is provided with a line-drawing marker 40 to draw a line according to the motion of the machine body on the soil surface indicating the position to pass the machine body in the next pass. The marker is placed in a state turnable between a working state to draw a line on the soil surface and a non-working state free from the line- drawing action. The turning speed is slowly decelerated in the case of turning the line-drawing marker 40 from the working state to the non-working state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing marker provided in a paddy field working machine such as a rice transplanter, for drawing a position on the topsoil surface where the machine passes in the next stroke as the machine advances.

[0002]

2. Description of the Related Art FIG. 38 shows the structure of a conventional drawing marker mounting portion. The drawing marker 40 is rotatably supported by the marker support frame 41 with a pivot shaft 42 in the front-rear direction as a fulcrum. When the wire drawing marker 40 falls down to the side and the tip of the wire drawing action portion 40b is inserted into the mud of the field (shown by a solid line in the figure), the wire drawing marker 40 is almost turned when the wire 43 is drawn. It is in a vertically non-operating state (indicated by a chain line in the figure).

[0003] In the prior art, the connection point 44 between the drawing marker arm 40 and the wire 43 is located outside the perpendicular 45 passing through the rotation fulcrum shaft 42 in the operating state, and the perpendicular in the non-operating state. 45, the turning speed is initially high when the drawing marker 40 is turned from the operating state to the non-operating state, and thereafter the turning speed gradually decreases. After 45, the rotation speed increased again.

[0004]

As described above, since the conventional drawing marker 40 has a high rotation speed immediately before the non-operation state, it adheres to the drawing operation portion 40b when stopping in the non-operation state and immediately before that. There is a problem that the mud that is scattered inwardly and stains the operator and the airframe.

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. That is, the paddy field working machine according to the present invention is a paddy field working machine that performs agricultural work on a field while advancing the body, and a drawing marker for drawing a position on the topsoil surface where the body passes in the next process with the progress of the body. And a rotatable state in which the wire is drawn on the topsoil surface and a non-working state in which the drawing marker is not drawn. When the drawing marker is turned from the working state to the non-working state, the rotation speed is gradually reduced. It is characterized by having comprised.

When the drawing marker is turned from the operating state to the non-operating state, the rotation speed is gradually reduced, so that the mud adhering to the drawing action portion at the time when the turning of the drawing marker is stopped and immediately before the turning operation is reduced. Do not splatter inward.

[0007]

Preferred embodiments of the present invention will be described below with reference to the drawings. The paddy field working machine 1 shown in FIGS. 1 to 34 is a riding rice transplanter in which a 10-row seedling planting section 4 is attached to the rear side of the riding traveling vehicle body 2 via a lifting link device 3 so as to be able to move up and down. The main body of the fertilizer applicator 5 having a fertilizer discharge port on the side of the seedling planting section 4 is mounted on the rear portion of the traveling vehicle body 2, and the herbaceous plant spraying apparatus 6 is mounted on the seedling planting section 4.

The traveling vehicle body 2, which is a four-wheel drive vehicle, is provided with front wheel final cases 13, 13 on the left and right sides of a transmission case 10 arranged at the front of the body, and front wheels protruding outward from the front wheel final case. Front wheel 14,
14, the front end of the main frame 15 is fixed to the back of the transmission case 10,
Left and right rear wheel gear cases 1 on the rear end of the main frame
The main rear wheels 20 and 20 are rotatably supported on the rear wheel axle and project outward from the rear wheel gear case.
And auxiliary rear wheels 21, 21, 22, 22 are attached. The auxiliary rear wheels 21, 21, 22, 22 are configured to be slid inward.

An engine 25 is mounted on the main frame 15, and an engine cover 30 covers an upper part of the engine.
The seat 31 is installed on the vehicle. Further, a front upper portion of the center of the fuselage is covered with a front cover 32, and a handle 33 for steering the front wheels 14, 14 is provided above the front cover 32.

Engine cover 30 and front cover 3
The left and right sides of the vehicle 2 and the rear side of the engine cover 30 form a main step 35 serving as a path for a driver. The rear part of the engine cover of the main step 35 is the main rear wheel 20,
20 so as not to interfere. On both left and right sides of the main step 35, expansion steps 36, 36 are provided at substantially the same level as the main step 35. The rear portions of the extended steps 36, 36 are also the main rear wheels 20, 2
0 and the auxiliary rear wheels 21, 22, 22, 22 so as not to interfere with each other. Further, on the front and side of the left and right extension steps 36, side footrests 37, 37 used when getting on and off the extension steps are attached. The outer portions 36a, 36a of the expansion steps 36, 36 are removable.

On both left and right sides of the machine body, there are provided spare seedling mounts 38, 38 on which seedlings to be supplied to a seedling mount 80 described later are placed. This spare seedling mounting table 38 has a plurality of stages of seedling mounting frames 38b attached to a spare seedling mounting frame 38a whose base is supported by the first frame 41a of the marker support frame 41, and the seedlings of each stage are mounted. Two seedling boxes are placed side by side on the mounting frames 38b, with the longitudinal direction facing forward and backward. The seedling mounting frame 38b is
bA and the outer portion 38bB are connected by a hinge 38c, and the outer portion 38bB is connected to the inner portion 38bA when stored.
It can be turned over.

Further, on the left and right sides of the fuselage, there are provided drawing markers 40, 40 for drawing on the topsoil surface a position where the fuselage passes in the next stroke as the fuselage advances. As shown in FIG. 3, the marker 40 has a marker arm 40a rotatably attached to a tip end of a marker support frame 41 protruding laterally from the fuselage around a pivot shaft 42 in the front-rear direction. A wire drawing member 40b vertically attached to the tip of the marker arm, and a wire connecting member 40c fixed to an intermediate portion of the marker arm 40a. The wire 43 is connected. Wire 43
Is loose, the drawing marker 40 falls down to the side, and the drawing end of the drawing action portion 40a is inserted into the mud in the field (shown by a solid line in FIG. 3). When the wire 43 is drawn, the drawing marker 40
In a non-operating state (shown by a dashed line in FIG. 3) which stands almost vertically. Left and right drawing marker actuating wires 43,
Reference numeral 43 is drawn alternately in conjunction with the expansion / contraction operation of the hydraulic cylinder 56 for raising and lowering the seedling planting section. When performing the operation while turning over the field, the drawing marker 40 on the side where the machine passes in the next stroke acts. In this state, the drawing marker 40 draws a position through which the left and right centers of the aircraft pass in the next stroke on the topsoil surface.

When the drawing marker 40 is in a non-operating state, the connecting point 44 between the marker arm 40a and the wire 43 is located at a position which does not exceed the inside of a perpendicular 45 passing through the rotation fulcrum shaft 42. The fulcrum shaft 42 is almost perpendicular 4
5). Drawing marker 40
When turning from the working state to the non-working state, the turning speed is initially high, and then gradually decreases. Therefore, when the drawing marker 40 is stopped in the non-operation state and immediately before that, the mud adhering to the drawing action portion 40b does not scatter inward, and does not stain the operator or the machine body.

FIG. 35 shows a different construction of the drawing marker attaching portion. In this configuration, a wire 43 for drawing a marker is connected to the upper end of a marker operating arm 40d integral with the base of the marker arm 40a via a spring 43a, and between the lower end of the arm 40d and the marker support frame 41. A damper 46 is provided at the lower end, and the rotation speed of the drawing marker 40 from the operation state to the non-operation state is reduced by the operation of the damper 46. An excessive load applied to the wire 43 by the damper 46 is absorbed by the spring 43a. Reference numeral 47 denotes a return spring for returning the drawing marker 40 from the non-operation state to the operation state when the drawing of the wire 43 is released. In this configuration, the rotation speed of the drawing marker 40 from the operation state to the non-operation state does not gradually decrease, but the rotation speed generally decreases, so that the drawing marker 40 is attached to the drawing operation section 40b. It prevents mud from splashing inward.

The marker support frame 41 is provided with a first frame 41a fixed to the body horizontally and horizontally, and a second frame 41b rotatably attached to the tip of the first frame with a vertical axis as a fulcrum. And a third frame 41c rotatably attached to the distal end of the second frame with a vertical axis as a fulcrum. Then, as described above, the drawing marker 4 is attached to the tip of the third frame 41c.
Numeral 0 is attached so as to be rotatable about the pivot shaft 42 as a fulcrum. In addition, a side marker 48 indicating the position of the outermost seedling streak is rotatably attached to the tip of the second frame 41b with the vertical axis as a fulcrum. When working in a field, the marker support frames 41, 41 are straightened, and the horizontal width is reduced by folding the marker support frames 41, 41 during transportation or storage.

The lifting link device 3 includes a main frame 15
An upper link 51 and lower links 52, 52 rotatably attached to a link base frame 50 fixedly provided at the rear end of the vertical link 53 are connected to the rear ends of these upper and lower links. I have. Then, a connection shaft 54 fixed to the seedling planting portion side is rotatably inserted and connected to a bearing portion projecting rearward from a lower end portion of the vertical link 53, and the seedling planting portion 4 is freely rollable around the connection shaft 54. Attached to. When the lifting hydraulic cylinder 56 connected to the lower end of the swing arm 57 integrally provided on the base of the upper link 51 with the piston rod side pivotally supported on the base side fixed to the main frame 15 is extended and lowered, Link device 3
Moves up and down, and the seedling planting section 4 moves up and down while maintaining a substantially constant posture. The switching of the hydraulic cylinder 56 is controlled by a hydraulic valve 58 provided on the traveling vehicle body 2. The rolling electric motor 59 allows the seedling placement section 4 to be rolled about the connection shaft 54. .

The seedling planting section 4 has a ten-row planting structure, a transmission case 60 also serving as a frame, and a seedling mounting table 8 on which seedlings are placed.
0, a number of seedling planting apparatuses 200,... For planting the seedlings on the seedling mounting table in the field, floats 210,.

The transmission case 60 is provided with a planting transmission case 62-3 on the rear surface of the seedling table driving case 61 located at the center in the left and right direction.
And the inner ends of the first connection pipes 63, 63 are fixed to the left and right side surfaces of the seedling table driving case 61, and the planting transmission case is fixed to the outer ends of the first connection pipes 63, 63. 6
2-2 and 62-4 are fixed to the front inner surfaces thereof, and the second connecting pipe 6 is attached to the front outer surfaces of the planting transmission cases 62-2 and 62-4.
4 and 64, and the second connecting pipe 64,
The front inner surfaces of the planting transmission cases 62-1 and 62-5 are fixed to the outer end of the plant 64. The seedling table 80 is supported on the upper side of the transmission case 60, and each planted transmission case 62-
1-62-5, a planting drive shaft 65 supported on the rear part,
The seedling planting apparatus 200-1 to 200-10
Is attached.

The power for driving the seedling plant transmitted from the transmission case 10 of the traveling vehicle body 2 is transmitted to the input section of the transmission case 60. The rotation power is the seedling table drive case 6
1 through the lower portion of the transmission case 62-2 to 62-4
Is transmitted to the center planting main shaft 69 supported inside the first connecting pipes 63 and 63, and further, can be transmitted to and from the center planting main shaft 69 by the ridge clutches 71-2 to 71-4. Are transmitted to the planting drive shafts 65,... Of the planting transmission cases 62-2 to 62-4 via the chains 72,. In addition, the rotational power of the center planting main shaft 69 is supplied to the second connecting pipe 6 by the ridge clutches 71-1 and 71-5.
4 and 64 and to the side planting spindles 70, 70 supported on the front of the planting transmission cases 62-1 and 62-5 so as to be able to be inserted into and disengaged from the side.
From the plant via the chains 72, 72
1, 62-5 are transmitted to the planting drive shafts 65, 65.

The rotation of the center planting spindle 69 is performed by the seedling vertical feed drive shaft 7 for driving the seedling vertical feeders 101,.
3 and a lateral movement rod 74 for moving the seedling mounting table 80 left and right.

Since each of the ridge clutches 71,... Are individually turned on and off, the planting lines PL1 to PL10 can be switched between planting and non-planting in units of two.
The ridge clutch levers 75-1 and 75-5 for operating the outer two ridge clutches 71-1, 71-5 are provided on the traveling vehicle body 2, and the central six-row ridge clutches 71-2 to 71-4 are provided. The ridge clutch levers 75-2 to 75-4 to be operated are provided in the seedling planting section 4, and the respective operation levers are connected to clutch pins 76,... Of the ridge clutch by operation wires 77,.

The seedling mounting table 80 is provided so as to be inclined so that the front side is higher, and is divided into seedling mounting sections 80-1 to 80-10 for each seedling attachment strip by partition walls 81,. I have. The seedling mounting table 80 is supported on the back side of the seedling mounting surface so as to be movable left and right. The supporting structure is such that engaging sliding members 84,... Are fixed to a lateral frame 82 provided in the left and right direction below the rear surface side of the seedling mounting surface (shown in FIG. 6), and the engaging sliding members are planted and transmitted. Case 6
The right and left long support rails 83 slidably engaged with the left and right support rails 83 provided on
Rollers 86,... Attached to a seedling table support frame 85 having a base supported by −2, 62-4 are engaged with an upper rail 87 having a U-shaped cross section in the left-right direction fixed to the upper rear surface of the seedling mounting surface. ing. Connection members 74a, 74a attached to both ends of the lateral movement rod 74 are fixed to the horizontal frame 82.
8 and 88 (shown in FIG. 11), and the lateral moving rod 74 reciprocates left and right, so that the seedling mounting table 80 reciprocates right and left along the support rail 83. At the upper end of each seedling mounting surface, an extended seedling mounting portion 89,... Is rotatably attached to the seedling mounting surface side.

As shown in FIG. 6, the support rail 83 has a rectangular section 83a with which the engaging sliding members 84,... Engage, and an L-shaped section for receiving the lower end surface of the seedling on the seedling mounting table. The part 83b is integrally formed, and seedling division openings 90,... Cut out in a U-shape are formed at ten places corresponding to the respective seedling placement parts. As the seedling mounting table 80 reciprocates left and right, the seedlings located at the lower end of each seedling mounting portion are sequentially supplied to the seedling division openings 90. Seedling plant 20
0 is passed through the seedling dividing port 90, and the seedling is divided into one plant and taken out. As shown in FIG. 7, rubber seedling dividing guides 91,
At the front of the edge of the seedling dividing port 90, a guide member 92 made of a metal wire and formed in a shape following the tip trajectory of the planting tool 202 is mounted.

The structure of the support portion of the support rail 83 is as follows (see FIG. 6). That is, the support rail vertical movement guide plates 95 are attached to brackets 94 fixed to the planting transmission cases 62, and the support rail attachment members 96 are slidable up and down with respect to the guide plates.
Are provided, and the supporting rails 83 are attached to the mounting members 96,.
Is installed. A bracket 97 for adjusting the amount of seedlings in the left-right direction is rotatably fitted to the brackets 94,.
Support rail vertical movement arm 9 fixed to the seedling collection amount adjusting shaft 9
,... Are connected to support rail mounting members 96,.
9 are connected. When the seedling collecting amount adjusting shaft 97 is rotated by using a seedling collecting amount adjusting lever (not shown), the support rail mounting members 96,.
, So that the amount of seedlings collected by the planting tool 202 is adjusted.

When all the seedlings in one horizontal row located at the lower end of the seedling placement part are transplanted to the lower part on the back side of each seedling placement part 80-1 to 80-10, the seedling is transferred downward. A belt-type seedling vertical feeding device 101 is provided. This seedling vertical feeding device 101 stretches an endless seedling feeding belt 102 having a small projection formed on an outer peripheral portion around a driving roller 103 and a driven roller 104 as shown in FIGS. 6 and 7, and is driven by a tension spring 105. Rotary shaft 104 of roller 104
a is pulled in the direction in which the seedling feed belt 102 is stretched.
Roller drive shaft 1 on which drive roller 103 is mounted
A drive arm 107 is attached to 03a via a ratchet mechanism. As shown in FIG. 9 and FIG.
09 are integrally mounted, and rollers 110,... Are supported at the distal end of the seedling vertical feed arm. When the seedling mounting table 80 reaches the end of the left and right strokes, the drive arm 10
7 comes into contact with the roller 110, and the roller drive shaft 103a is rotated by a predetermined angle.
Operate by a predetermined amount. Roller 110
Moves away from the drive arm 107, the torque spring 1
Due to the tension of 11, the drive arm 107 returns to the posture before driving. An operating tool 71 for operating the ridge clutch 71
a and an operation stop member 113 interlocked via a wire 112
When the ridge clutch 71 is operated to "disengage", the operation stopping member 113 is engaged with the driven roller 104, so that the seedling feeding belt 102 does not perform the feeding operation.

At the lower part on the upper surface side of each seedling mounting part, a seedling holding member 115 for preventing the seedlings from floating, and a resistance for receiving the leaves of the seedling located at the lowermost stage and lifting the leaves so that they do not hang down. .. Are provided. Seedling holder 1
10 is a column 117, 11 protruding from the partition wall 81, 81.
7 so that it can be switched between a seedling holding action state shown by a solid line in FIG. 6 and a seedling holding action state shown by a chain line in FIG.

The seedling planting apparatus 200 includes the planting drive shaft 65.
And a pair of planting tools 202, 202 attached to both ends of the rotating case. By the transmission mechanism in the rotating case 201, the planting tool 2
02 and 202 rotate in the direction opposite to the direction of rotation of the rotating case 201, and the tip of the fork-shaped seedling separating tool fixed to the planting tool operates so as to draw a vertically-deformed elliptical closed locus. Thereby, the seedling separating tool of the planting tools 202,.
Separately hold the seedlings supplied to 0,... And plant them in the field scene.

As the float, a center float 2 for leveling the fifth seedling attachment PL5 (or PL6) from the outside.
10C and the third and fourth seedling attachments PL3 from the outside
Mid floats 210M, 210M for leveling PL4 (or PL7, PL8), and side floats 210S, 210S for leveling the first and second seedling studs PL1, PL2 (or PL9, PL10) from the outside. Have.

The support structure of each float will be described.
A pair of left and right float support arms 212 are integrally provided on a left and right long float support shaft 211 rotatably supported below the planting transmission case 62,.
At the rear ends of the pair of left and right float support arms, mounting legs 214,... Fixed to the upper surface of the float via left and right pivot shafts 213,. Therefore, each of the floats 210 can freely swing up and down. When the float supporting shaft 211 is rotated by operating the planting depth adjusting lever 215, the vertical position of each float 210,... Changes, and the planting depth of the seedling is changed. Symbol 216
Is a lever guide of the planting depth adjusting lever, which can adjust the planting depth of the seedling in a plurality of stages.

An angle (float angle) of the center float 210C with respect to the horizontal plane is detected by the float angle sensor 219 via the ground height detecting mechanism 218, and the hydraulic valve 58 is driven based on the detection result. For example, where the topsoil surface is high, the front part of the center float 210C is pushed up, and the float facing angle is detected to be small. Then, an output command is issued to the hydraulic valve 58 so as to cause the hydraulic cylinder 56 to protrude, and the seedling placement section 4 is raised. Also, where the topsoil surface is low, the front angle of the center float 210C is lowered, so that a large facing angle is detected. Then, an output command is issued to the hydraulic valve 58 so as to contract the hydraulic cylinder 56, and the seedling placement section 4 is lowered. As described above, the planting depth of the seedlings is maintained constant by controlling the height of the planting portion 4 above the ground according to the height of the top soil surface of the field.

Further, the side floats 210S, 210S
Are provided with side float sensors 221 and 221 for detecting the amount of swing of the float. The rolling electric motor 59 is driven so as to control the rolling of the seedling planting section 4 so that the detection values of the left and right side float sensors become equal, thereby equalizing the planting depth of the seedlings in each row.

The side float sensor 221 includes a float support arm 212 and a link 222 provided in parallel with the float support arm 212.
Are attached to an attachment stay 224 integrated with a member 223 connecting the two. The detection arm 221 a of the side float sensor is connected to a detection stay 215 integrated with the mounting leg 214 via a detection link 216. Thus, when the side float 210S swings up and down, the swing amount is detected by the side float sensor 221. Since the float support arm 212 and the link 222 form a parallel link mechanism, the relative position between the side float sensor 221 and the side float 210S is changed even if the planting depth is changed by rotating the float support arm 212 up and down. As always, the swing amount of the side float can be accurately detected.

The detection arm 221a is urged in the direction of the arrow in FIG. 21 by a torque spring (not shown) built in the side float sensor 221 to constantly press the front portion of the side float 210S against the topsoil surface.
Side float 210S that accurately follows irregularities on the topsoil surface
Swings.

The center float 210C comprises a central body 210Ca and auxiliary floats 210Cb, 210Cb attached to the left and right sides thereof.
Mud gathering plates 230, 2 for backfilling the traces of passage of the front wheels 14, 14 below the front ends of 0Cb, 210Cb.
30 are provided. As shown in FIG. 23, the mud gathering plate 230 has a rear end attached to a vertical rotation shaft 232 rotatably supported by a support member 231 fixed to the upper surface of the float. It is urged to rotate. Spring 233
Can be adjusted by a tension adjusting nut 233a. The rotation restricting pin 234 attached to the front end of the mud gathering plate 230 is loosely fitted in the long hole 235a of the rotation restricting plate 235 fixed to the float, and the rotation range of the mud gathering plate 230 is regulated. Further, a rotation restricting bolt 236 is provided which is locked to a locking plate 236a fixed to the rotation shaft 232 when the mud drawer plate 230 is turned to the outermost position. By changing the position, the maximum outer rotational position of the mud drawer 230 can be adjusted.

When the center float 210C slides on the mud surface, the mud plate 230 pushes the mud outward and fills the front wheel mark. The harder the soil, the greater the resistance of the mud plate 230 to be received from the soil. Therefore, the mud plate 230 rotates inward against the tension of the spring 233, and the mud plate 23
The plane angle α of 0 becomes large. As a result, the mud plate 23
0 extrudes the mud to the outside, and the mud having low fluidity in hard soil can be guided to the trail of the front wheel. Thus, the angle α of the mud plate 230 depends on the hardness of the soil.
Is automatically adjusted, so that the front wheel trace can always be satisfactorily backfilled.

FIG. 36 shows a different construction of the mud plate. The front end of the mud drawer 230 'is attached to a vertical shaft 238 rotatably supported by a support member 237 fixed to the float 210C. An angle fixing pin 240 urged downward by a spring 239 is provided on a plate 238a integral with the shaft 238, and the tip of this pin 240 is inserted into one of three pin holes 237a of the support member 237. By inserting, the mud drawer 230 'is fixed so as not to rotate around the shaft 238. When adjusting the angle of the mud drawer 230 ', the angle fixing pin 240 is manually pulled out from the pin hole 237a, and the mud drawer 230' is rotated to a position suitable for the hardness and softness of the soil. If the soil is hard, insert the angle fixing pin 240 into the outer pin hole 23.
7a to increase the planar angle α of the mud drawer 195 (the rear end is located outside the front end rather than the front end) to increase the action of pushing mud outward. When the soil is relatively soft, the angle fixing pin 240 is inserted into the center pin hole 237a to reduce the plane angle α of the mud drawer 235 (the rear end is located more outward than the front end), The effect of pushing mud outward is reduced. In addition, the angle fixing pin 240
Is inserted into the inner pin hole 237a,
0 ′ is almost parallel to the traveling direction and does not push mud outward.

At a position behind the mud plate 230 at the space between the center float 210C and the mid float 210M, a front wheel erasing rake 242 and a rear rake 24 are disposed.
3 are provided. These rakes 242, 243
As shown in FIG. 24 and FIG. 25, the rear part has a bifurcated shape in which the rear part is branched into left and right legs, and is provided to be inclined forward and upward. In the front rake 242, the position of the inner leg 242a (I) is higher than that of the outer leg 242a (O), and the mud pushed out to the space by the mud plate 230 is easily guided to the front wheel mark. I have. In the case of soft soil with high fluidity, the mud is removed by the front rake 242 and mid float 2
It is preferable that the front rake 242 be disposed at a position on the front side of the front end of the mid float 210M in order to facilitate passage between 10M. The rear rake 243 has both the inner and outer legs 243a (I) and 243a (O) at the same height, and mainly serves to level the trace of passage of the backfilled front wheel.

A stay 244 for supporting the rake 242 (or 243) is mounted on a rake mounting shaft 246 that is suspended from a mounting member 245 fixed to the first connecting pipe 63. The structure of the attachment portion is the cylindrical portion 244 of the stay 244.
a is fitted into the rake mounting shaft 246 from below, and the front end of the stay-side fixing pin 248 urged forward by the spring 247 is provided with a plurality of upper and lower pin holes formed in the rear surface of the rake mounting shaft 246. 246a,... By changing the position of the pin hole 246a for inserting the fixing pin 248,
(Or 243) can be adjusted. Fixing pin 24
The rear portion 8 is bent in a hook shape, and the fixing pin 248 can be pulled out from the pin hole 246a by hooking and pulling the finger, so that the mounting height of the rake can be easily adjusted with one hand.

As shown in FIG. 37, a front wheel mark erasing rake 250 is provided rotatably around a rake mounting shaft 246, and the rake mounting shaft 246 is slightly biased inward with respect to the left and right centers of the front wheel mark erasing rake 250. When the position is shifted, the plane angle of the front wheel mark erasing rake 250 changes according to the resistance of the soil, and the flow of the mud becomes smooth, so that the mud pushed out by the mud plate 230 is easily guided to the front wheel mark.

The main rear wheels 20, 20 are located in the middle of the third and fourth seedling studs PL3, PL4 (or PL7, PL8) from the outside.
M, 210M. Also, the outer auxiliary rear wheels 22, 22 are the first and second seedling attachments PL from the outside.
1, PL2 (or PL9, PL10), and the trace of the passage is leveled by the side floats 210S, 210S.

The inner auxiliary rear wheels 21 and 21 are located at substantially the same left and right positions of the third seedling attachment PL3 (or PL8) from the outside, and the trail of the passage is indicated by the mid floats 210M and 210M.
It is leveled by auxiliary rear wheel mark erasing rakes 252 and 252 provided at a space between the M and the side floats 210S and 210S. As shown in FIG. 26, this auxiliary rear wheel track rake 252 has a total of five legs 252a which are inclined forward and upward, and the three central legs are integrated at the front to stay 252b.
The legs at the left and right ends are independently attached to the stay 252b. This is to prevent interference with a fixed handle 187 described later, which is located between the center three legs and the left and right ends.

The rice transplanter 1 is provided at various locations with a structure for reducing the lateral width of the seedling planting section 4 during transportation or storage. First, a configuration in which the left and right ends of the seedling mounting table 80 are folded will be described (see FIGS. 7 to 12).

A partition wall 81-4 for partitioning the third seedling mounting portion 80-3 and the fourth seedling mounting portion 80-4 from the left is divided into an inner portion 81a and an outer portion 81b. , The inner part 81a is a seedling placement part 80-4 to 80-8 at the center.
The outer part 81b is formed integrally with the three left outer seedling placement parts 80-1, 80-2, and 80-3. The partition wall 81-4 is formed higher than the other partition walls except the partition wall 81-9 with respect to the seedling mounting surface.
A single rotary shaft 121 is inserted through cylindrical portions 120a, 120b,... Formed at the upper ends of the two portions 81a, 81b. The parts 80-1, 80-2, and 80-3 are turned inward upward, and the parts are overlapped on the fourth to sixth seedling placement parts 80-4, 80-5, and 80-6 from the left. It folds into a state. Prop 1 provided on the fifth to seventh partition walls 81-5, 81-6, 81-7 from the left
17 are fixed to the tops of the support posts 122,..., And are provided on the partition walls 81-1, 81-2, 81-3 when the three seedling placement portions on the left outer side are folded. Prop 11
The tops of 7,... Engage with the column supports 122,.

Further, a partition wall 81-9 for partitioning the second seedling placing portion 80-9 from the right and the third seedling placing portion 80-8 from the right,
The inner part 81a is divided into an inner part 81a and an outer part 81b, and the inner part 81a is a central seedling placement part 80-4 to 80-8.
0-8, and is formed integrally with the outer side 81b.
It is formed integrally with the seedling placement portions 80-9 and 80-10 of the stripe. This partition wall 81-9 is formed higher than the partition wall 82-4 with respect to the seedling mounting surface. And both parts 8
Cylindrical portions 120a, 120b formed at the upper end portions of 1a, 81b
, One rotation shaft 121 is inserted through and provided on the right side of the rotation shaft 121 as a center.
9, 80-10 is inverted upward and inward, and this portion is folded so as to overlap the third and fourth seedling placement portions 80-7 and 80-8 from the right. A concave column support 122 is fixed to the bottom surface of the leftmost partition wall 81-1 and provided on the rightmost partition wall 81-11 when the right outer two-row seedling placement portion is folded. Prop 117
Are engaged with this column receiver 122. Further, the top of the support 117 provided on the partition wall 81-8 and the top of the support 117 provided on the partition 81-10 are connected by the auxiliary support 123,
The seedling placing portions 80-9 and 80-10 are supported.

With respect to the arrangement of the cylindrical portion, the cylindrical portion 1
20a and 120b are arranged in three sets of upper and lower parts, and 120b, 120a, 120b, 120a, 120a,
120b. In addition, the upper two sets of cylindrical portions 12
0a, 120b, there is no gap, but the lowermost cylindrical portion 1
A gap S is provided between 20a and 120b. This is for the following reason. That is, since the L-shaped portion 83b of the support rail 83 is at an acute angle in a side view, the three seedling placement portions 80-1, 80-2, 80-3 on the left outside and the two seedling placement portions on the right outside are placed. The portions 80-9 and 80-10 cannot be inverted at the same position, and the seedlings are pushed up by the gap S along the inclination of the seedling mounting table in order to avoid interference with the L-shaped portion 83a. This is for inverting the mounting portion.

In FIG. 11, reference numeral 82 denotes the horizontal frame. The horizontal frame includes the seedling mounting portions 80-4 to 80-8 at the center and the seedling mounting portions 80-1, 80-2, 80- at the left and right outer portions. 3 (or 80-
9, 80-10), it is separated into a central portion 82A and an outer portion 82B near the boundary. The mounting member 88 is fixed to both left and right ends of the central portion 82A, and a fixing member 124 is fixed to the inner end of the outer portion 82B so as to face the mounting member 88. A round hole 125 penetrating left and right is formed in the fixing member 124, and a screw hole 126 is formed in the mounting member 88 on an extension of the round hole 125. A fixing rod 127 having a threaded distal end is inserted into the round hole 125 of the fixing member 124 from the outside, and the distal end threaded portion is screwed into the screw hole 126 of the mounting member 88, so that the seedlings on the left and right outer portions are placed. Placing parts 80-1, 80-2,
80-3 (or 80-9, 80-10) is fixed to the seedling placement sections 80-4 to 80-8 at the center. The fixed rod 12
7, a small-diameter portion 127a is formed in an appropriate position. When the fixing rod 127 is pulled out from the screw hole 126 when the seedling placement portion on the left and right sides is folded, the tip of the knock pin 128 engages with the small-diameter portion 127a. The fixing rod 127 is prevented from coming off further. Since the outer wall surface of the small diameter portion 127a is tapered, the fixing rod 127 can be pushed in. 129 in the figure is a knock pin 128
Is a spring that urges the fixing rod side.

In FIG. 12, reference numeral 131 denotes a horizontal pipe provided on the upper rear surface of the seedling mounting table. The horizontal pipe also has a seedling mounting section 80-4 to 80-8 at the center and a seedling mounting section 80-80 at the left and right outer sides. 1,
In the vicinity of the boundary between 80-2 and 80-3 (or 80-9 and 80-10), it is separated into a central portion 131A and an outer portion 131B. A male screw member 132 is fitted on the inner end side of the hollow portion of the central portion 131A. Screw hole 1 at the tip
The fixing rod 134 on which the 33 is formed is moved from the outside to the horizontal pipe 13.
1 and the screw holes 133 are screwed into the male screw members 132, so that the seedling mounting portions 80-
1,80-2,80-3 (or 80-9,80-10)
Is fixed to the seedling placement portions 80-4 to 80-8 at the center. The mechanism for preventing the fixing rod 134 from falling off is provided by the fixing rod 127.
Similarly, the knock pin 137 biased by the spring 136 is engaged with the small diameter portion 134a of the fixing rod 134.

When the left and right outer seedling placement portions are deployed, the centrally located seedling vertical feeding device 101A and the left and right outer seedling vertical feeding device 101B are configured to be drive-coupled (see FIG. 7). ). That is, the seedling vertical feeding device 10 in the central part
The 1A roller drive shaft 103aA has a drive arm 107 attached to an inner end thereof via a ratchet mechanism 108, and a drive clutch body 140 having a clutch claw attached to an outer end thereof. A driven clutch body 141 attached to the outer roller drive shaft 103aB is engaged with the drive clutch body 140. The driven clutch body 141 is fitted so as to rotate integrally with the outer roller drive shaft 103aB, is slidable in the axial direction, and is urged toward the shaft end by a spring 142. Therefore, both clutch bodies 140, 141
When the two clutch claws abut each other, the driven clutch body 141 can escape, so that
Even if the two clutch bodies 140 and 141 are not in phase, the clutch bodies 140 and 141 are easily connected and quickly engaged.

As shown in FIG. 5, the seedling table support frame 85 has a horizontal frame 8 above the vertical frames 85a, 85a whose bases are fixed to the planting transmission cases 62-2, 62-4.
5b is provided horizontally, and rotatable frames 85c, 85c are rotatably provided at the left and right ends of the horizontal frame. The seedling mounting portion 80- at the center is provided at the upper end of the vertical frames 85a, 85a.
Rollers 86, 86 for supporting 4 to 80-8 are attached, and the right and left outer seedling placement sections 80-1, 80-2, 80-3 (or 80) are attached to the distal ends of the rotating frames 85c, 85c.
-9, 80-10).

Roller 86 supporting left and right outer seedling placement parts
As shown in FIG. 13, the roller shaft 86a is axially slidably fitted in a roller shaft hole of the rotating frame 85c, and the spring frame 86c is loosely fitted to the roller shaft 86a. Is stopped by a split pin 86c that is urged away from the roller shaft 86a and inserted through the roller shaft 86a. A finger hook 86d is fixed to an end of the roller shaft 86a. When a finger is hung on the finger hook 86d and the roller shaft 86a is pulled down, the roller 86 comes off from the U-shaped concave portion of the upper rail 87.

The connecting portion between the horizontal frame 85b and the rotary frame 85c has a cylindrical portion 85e on the rotary frame 85c rotatably and axially slidably fitted on a shaft 85d on the horizontal frame 85b side. . A corrugated cam 85f is formed integrally with the cylindrical portion 85e. The cylindrical portion 85e is urged upward by a spring 85h so that a pin 85g inserted perpendicularly to the shaft 85d contacts the cam 85f. I have. Normally, the pin 85g is engaged with the concave portion of the cam 85f,
The rotating frame 85c is stabilized in a state in which the rotating frame 85c faces right and left. Rotating frame 85 than its stable state
A stopper 85i for preventing c from rotating toward the seedling mounting table is fixed to the cam 85f.

Further, the intermediate portion of the wire 112 for stopping the operation of the seedling feed belt at the outer two portions is connected to the rotating frame 85c.
Is fixed in place. For this reason, when the outer two portions of the seedling mounting table are folded with the rollers 86 supporting the left and right outer seedling mounting portions disengaged from the U-shaped concave portion of the upper rail 87, the rotating frame is pulled by the wire 112. 85c rotates backward. At this time, since the pin 85g slides along the wavy cam 85f, the turning of the turning frame 85c is performed smoothly.

FIG. 14 shows the structure of a divided portion of the support rail. The support rail 83 has a seedling dividing port 9 for the central six rows.
, And a detaching portion 83B having two seedling divisions 90, 90 on the left and right sides, and both portions 83A, 83B are detached into pin holes 150 on the fixed portion side. The connection pin 151 is inserted and connected. The stopper pin 152 on the fixed part side is detached and the hook 153 on the part side is hooked.
By pulling outward at 54, both parts 83
A and 83B are adhered. When the lever 154 is rotated inward, the engagement between the stopper pin 152 and the hook 153 is released, and the head of the hook 153 pushes the plate 155 of the fixed portion inward. Extruded. For this reason, the connection pin 151 comes out of the pin hole 150 a little,
Subsequent removal work is easy.

FIGS. 15 to 17 show the structure of a division portion of the seedling collection adjusting axis. The seedling removal adjusting shaft 97 is divided into a hollow pipe-shaped fixed portion 97A corresponding to the fixed portion 83A of the support rail and a solid folded portion 97B corresponding to the detached portion 83B of the support rail. The folded portion 97B is a guide pipe slidably provided in the left and right direction on brackets 94, 94 fixed to the planting transmission case 62-1 (or 62-5) for transmitting to the outer two-row seedling planting device. 160 is rotatably fitted. And
The two outer guide rails 95 are integrally mounted on the guide pipe 160, and the support rail mounting members 96 are slidably provided up and down with respect to the guide plates. The two outer support rail attachment members 96, 96 and the support rail removal portion 83B are detachable. Further, two outer support rail vertical movement arms 98, 98 are integrally attached to the folded portion 97B.

In operation, the inner end of the folded portion 97B is inserted into the outer end of the fixed portion 97A, and the pin hole 161a formed in the flange 161 of the fixed portion 97A.
The pin 162 fixed to the support rail vertical movement arm 98 inside the folded portion 97B is engaged, and both portions 97A, 97A,
97B are connected so as to rotate together. Then, the locking member 163 attached to the guide pipe 160 is hooked on the locked member 164 fixed to the bracket 94, and is fixed so that the above-described connection state does not come off.

To reduce the lateral width of the machine, the connection between the outer two support rail mounting members 96, 96 and the support rail removal portion 83B is released, and the locking member 163 is removed from the locked member 164. Then, the folded portion 97B is pulled out together with the guide pipe 160. Then, the connection releasing state maintaining lever 166 rotatably provided on the bracket 94 is engaged with the engaging portion 95a of the inner support rail vertical movement guide plate 95, and the connection between the fixed portion 97A and the folded portion 97B is released. Fix to state. Since the disconnected state maintaining lever 166 is urged by the torque spring 167 to the side engaged with the engaging portion 95a, the engagement between the two 166 and 95a will not be released unless an external force is applied. When the left and right ends of the transmission case 60 are bent upward in this disconnected state, as described later, the folded portion 97B of the seedling collecting amount adjustment shaft together with the outermost planting transmission case 62-1 (or 62-5) is raised. To rotate.

Next, the structure of the left and right bent portions of the transmission case 60 will be described with reference to FIGS. The second connecting pipe 64 is connected to the planting transmission case 62-2 (or 62-
4) Side inner pipe 64A and planting transmission case 62-1
(Or 62-5) side outer pipe 64B, and the outer pipe 64B is positioned upward with respect to the inner pipe 64A with the front-rear rotation fulcrum shaft 170 located above the joint between the two pipes as a fulcrum. It is rotatable. Rotating fulcrum shaft 1
Reference numeral 70 denotes a front and rear connection plate 174 having a center portion inserted through a rotation fulcrum shaft insertion hole 172 formed in the rotation fulcrum shaft support portion 171 of the outer pipe 64B, and front and rear ends of which are fixed to the inner pipe 64A. 175 are rotatably supported by bearings 176 and 176 respectively provided.

A flat chamfered portion 170a is formed at the front and rear central portions of the rotation fulcrum shaft 170, and a tip of a rotation fulcrum shaft fixing bolt 178 screwed from the upper surface side of the rotation fulcrum shaft support portion 171 is provided. The rotating fulcrum shaft 170 is fixed to the chamfered portion 170a so as not to rattle in the vertical direction. Further, the bearings 176 and 176 are fixed by bearing fixing bolts 179 and 179 screwed from the outer surfaces of the connection plates 174 and 175, so that the rotation fulcrum shaft 170 does not rattle in the left-right direction.

The joint between the two pipes 64a and 64b is formed by the tapered projection 183 on the inner pipe 64A side and the outer pipe 64.
The structure is such that the B-side tapered recess 184 fits. Lock nuts 185a, 185a below the joint
A pair of left and right adjustment bolts 185 and 185 screwed to the inner pipe 64A are provided, and the head of the adjustment bolt receives a lower portion of the inner end surface of the outer pipe 64B. By changing the screwing amount of the adjustment bolts 185, 185, the inclination of the outer pipe 64B with respect to the inner pipe 64A in the left and right and up and down directions can be adjusted.

When the second connecting pipe 64 is straight, a lock nut is connected to the outer pipe 64B, to a fixing plate 188 fixed to a fixed handle 187 whose base is rotatably supported on the inner pipe 64A around the left and right axes. 18
The inner and outer pipes 64A, 64B are fixed so as not to be separated by the contact of the head of the fixing bolt 189 screwed in 9a. At this time, the fixed handle 187 is engaged with the engaging recess 190a of the locking arm 190, and is locked so that the fixed handle 187 does not rotate.

The locking arm 190 includes a locking arm rotating shaft 1.
91 and is rotatably mounted on the torque spring 19.
2 urges the fixed handle 187 toward the side to be engaged. For this reason, when the fixed handle 187 is rotated upward to the fixed position, the lower end inclined surface 19 of the locking arm is required.
0b is pushed by the fixed handle 187 and the locking arm 190 is pressed.
When the fixed handle 187 is turned to the fixed position, the locking arm 190 is turned inward by the action of the torque spring 192 so that the engaging recess 190a is engaged with the fixed handle 187. Then, the inner pipe 64A and the outer pipe 64B are automatically fixed in a joined state.

From the above state, the locking arm 190 is manually rotated outward to rotate the engagement recess 190a and the fixed handle 187.
Is disengaged and the fixed handle 187 is rotated downward, the fixing of the second connection pipe 64 is released. In this state, when the outer pipe 64B is bent upward by 90 degrees with respect to the inner pipe 64A, the tip of the lock pin 193 provided in the outer pipe 64B fits into the lock pin hole 174a formed in the connection plate 174. The second connection pipe 64 is fixed in that position.

The side planting spindle 70 is connected to the second connecting pipe 6.
4 is divided into an inner portion 70A and an outer portion 70B at the position of the bent portion, and when the inner pipe 64A and the outer pipe 64B are joined, the pawl clutch 194 uses the two portions 70A, 70B.
B is connected, and the second connecting pipe 64 is bent, so that the pawl clutch 194 is disengaged and the outer portion 70B is connected to the outer pipe 64.
B is rotated. Claw clutch 194
Are the nail 194a on the inner side 70A side and the nail 1 on the outer side 70B side
94b is engaged at only one place, so that the pawl clutch 19 is engaged when connecting the inner portion 70A and the outer portion 70B.
4 is incorrect, the outer two-row seedling planting apparatus 200-
1,200-2 (or 200-9, 200-10) is prevented from being out of phase.

FIG. 22 is a view showing a structure of a divided portion of the float support shaft. The float support shaft 211 includes a center portion 211A that supports the center float 210C and the mid floats 210M, 210M, and a side float 210C.
S, 210S, left and right end portions 211B, 211B
The connecting members 260 and 261 each having a U-shaped cross section fixed to both portions are engaged with each other. Connector 26
Since 0, 261 is formed long before and after, rotation of the central portion 211A by operation of the planting depth lever 215 is reliably transmitted to the left and right end portions 211B, 211B. In addition, with this configuration, since the mud passes through the space 262 formed inside the connecting members 260 and 261 and communicates back and forth, the mud escapes rearward, so that poor connection due to biting mud or the like does not occur.

When the left and right end portions of the transmission case 60 are turned upward and bent, the folding portion 211 is interlocked therewith.
B, 211B are also folded upward, and the transmission case 6
When the left and right end portions of the “0” are connected to the main body, the two portions 211A and 211B are connected in conjunction therewith. As described above, since the float support shaft 211 does not need to be operated at the time of folding and returning, the labor of the left and right width reduction work of the whole paddy working machine is reduced. In addition, the float support shaft 2
11 is folded by operating the planting depth lever 215 to the transport position, that is, the position where the floats 210 are lifted. At this time, since the connectors 260 and 261 are parallel to the rotation fulcrum shaft 170, the connectors 260 and 261 do not protrude downward when the float support shaft 211 is folded, so that the connectors 260 and 261 do not become an obstacle.

As shown in FIG. 21, the pivot shaft 213 of the side float 210S and the planting transmission case 6 are used to prevent rattling of the connecting portions of the connecting members 260 and 261.
A tension spring 266 is stretched between 2-1 (or 62-5) and a fixed plate 265. If the side float 210S is pulled upward in this way, even if the connection portion is loose for some reason,
Since the float height is displaced to the side where the float moves up,
The planting depth of the seedlings does not become shallow, and the occurrence of floating seedlings due to shallow planting is prevented.

The fertilizer applicator 5 has a fertilizer storage section 270,... And a fertilizer feeding section 271,... Provided on the rear upper side of the traveling vehicle body 2. The fertilizer storage section 270,. The fertilizer is fed out by a fixed amount by the feeding parts 271 and is transferred through the fertilizing hoses 272 to the fertilizing guides 273 attached to the floats 210 and the groove forming body provided on the front side of the fertilizing guides 273 and so on. 2
The fertilizer is dropped into a fertilizing groove formed near the side portion of the seedling planting strip by 74,.

The fertilizer storage section comprises a central fertilizer storage section 270A for storing fertilizer for the central six rows and left and right fertilizer storage sections 270B and 270B for storing fertilizer for the outer two rows. Each fertilizer storage unit 270 inputs fertilizer from the upper opening. A lid 270a is attached to this opening. The lower part of the fertilizer storage unit 270 has a funnel shape, and the fertilizer therein is supplied to the fertilizer feeding units 271,.

The fertilizer feeding section 271 is provided with a feeding roll 276 having a fertilizer conveying recess 276a,. The rotation of the fertilizer drive shaft 277 intermittently rotated by the power from the traveling vehicle body is transmitted to the feeding shaft 279 to which the feeding roll 276 is attached via the transmission belt 278, and the feeding roll 276 rotates in the direction of the arrow in FIG. Thereby, the fertilizer in the fertilizer storage unit 270 is conveyed to the concave portions 276a,. The recess 2
By changing the opening degree (length in the direction orthogonal to the paper surface in FIG. 27) of 76a,...
Reference numeral 280 denotes an opening adjusting shaft, and when this shaft is rotated, the opening of the concave portions 276a,.

At the lower ends of the fertilizer feeding sections 271,..., Connecting pipes 282,.
Fertilizing hoses 272 are connected to the rear ends of the two. Also, the front ends of the connecting pipes 282,... Are inserted and connected to the back of an air chamber 283 provided in the left-right direction. A main outlet 285a of a blower 285 driven by a motor 284 is connected to the left end of the air chamber 283, and the air blown out from the blower 285 passes through the air chamber 283 to connect the connecting pipes 282 of each strip. The fertilizer that is blown into the fertilizer feeding section 271,.
Convey to 3, ...

A fertilizer collection door 288 which is opened and closed by a lever 287 is provided on the back of the fertilizer feeding section 271. A conduit 289 following the exit side of the fertilizer collection door 288 is connected to a fertilizer collection pipe 290 that is long in the left-right direction on the back side of the fertilizer feeding section 271. Fertilizer collection pipe 2
90 left and right central parts and sub-blower 285b of blower 285
Are connected by an air supply pipe 291. When the fertilizer take-out doors 288,... Of the fertilizer feeding sections 271,... Of each section are opened with the sub-blower outlet of the blower opened, the fertilizer storage sections 270,.
The fertilizer inside is discharged to the fertilizer collection pipe 290, and the fertilizer is carried to the fertilizer collection ports provided at the left and right ends of the fertilizer collection pipe 290 by the air supplied through the air supply pipe 291.

The air chamber 283 is fixed to the link base frame 50 by a fixing member 293, and the fertilizer storage sections 270,... And the fertilizer feeding sections 271,. The air chamber 283 has a central part 283A to which a fertilizer storage part 270A and a fertilizer feeding part 271,...
And the fertilizer storage unit 270B and the fertilizer feeding unit 2 for the outer two rows
Left and right end portions 283B, 2 to which 71, 271 are attached
The connecting member 295 fixed to the central portion 283A and the connecting member 296 fixed to the left and right end portions 283B are connected by a connecting shaft 297 in the vertical direction. Therefore, the left and right end portions 283B of the air chamber can be rotated about 90 degrees forward with the connection shaft 297 together with the fertilizer storage section 270B and the fertilizer feeding sections 271 and 271.

The fertilizer drive shaft 277 and the opening adjustment shaft 28
0, the fertilizer collection pipe 290 and the air supply pipe 291 also have the central portion 277 at the same position on the left and right sides of the dividing surface of the air chamber 283
A, 280A, 290A, 291A and left and right end portions 277
B, 280B, 290B, 291B
When the left and right end portions 283B of the air chamber are rotated forward, the left and right end portions 277B and 280 are integrally formed therewith.
B, 290B and 291B are also rotated.

In a state where the central portion 283A and the left and right end portions 283B of the air chamber 283 are connected, both portions are fixed by the fixture 298. This fixture 298
The operation unit is provided upward at a position on the rear side of the air chamber 283. Therefore, steps 35 and 3
6 can be engaged and disengaged from above. When the left and right end portions 283B of the air chamber are rotated forward, the fixing hook 299 attached to the left and right end portions is provided with a locking tool 299a provided in the step 35.
Hook and fix.

A handrail 300 is provided on the front side of the main body of the fertilizer application device to support the body when replenishing seedlings or fertilizer. The handrail 300 has a fixed portion 300A horizontally fixed to the upper ends of the columns 301, 301 provided at the rear of the extension step 36, and a left and right end of the fixed portion pivoted about a longitudinal axis 300a. L is freely attached
It comprises folded parts 300B, 300B of the shape. During the work, the folded portion 300B is tightened and fixed by the lock bolt 302 so that the folded portion 300B is horizontal.

An auxiliary step 303 used for putting a knee or as a seat for an auxiliary worker when supplying seedlings or fertilizer is provided on the support column 301, and for an auxiliary worker sitting on the auxiliary step. Auxiliary handrail 304 and support column 301
It is attached so that it can rotate around. The auxiliary step 303 and the auxiliary handrail 304 are supported by a support member 306 fixed to an arbitrary height of the support column 301 by a fixing pin 305.
Supported by.

FIG. 31 shows a supporting portion of the outer two fertilizing hoses. The cylindrical bases of the fertilizing hose stays 312 and 313 are rotatably fitted to the left and right shafts 311 provided on the mounting plate 310 fixed to the planting transmission case 62-1 (or 62-5). The upper end of the hose stay is connected to the intermediate portion between 272 and 272 of the two outer fertilizing hoses. Stopper plate 31 on mounting plate 310
And a stopper bolt 316 attached to the stopper plate. The outermost fertilizing hose 272-1 (or 272-10) is supported by the stopper plate 315 and the stopper bolt 316. The rotation range of the stay 312 is restricted. Tension spring 317 provided so as to exceed dead center
Accordingly, the fertilizer hose stay 312 is stabilized at the upper limit position H1 and the lower limit position H2 of the rotation range. Further, the U-shaped pipe 318 integrally attached to the fertilizing hose stay 312 allows the second fertilizing hose 272-2 (or 272) from the outside to be located above the stay in a range of 0 to β. The rotation range of the fertilizer hose stay 313 supporting -9) is restricted.

When the left and right fertilizer storage sections 270B and the fertilizer feeding sections 271 and 271 are deployed at the working position, both the fertilizer hose stays 312 and 313 are at the upper limit position H1, and the outer two fertilizer hoses 272 and 272 Is the seedling stand 8
0 is arranged along the back surface. Left and right fertilizer storage 27
When OB or the like is turned to the front side, the fertilizer hose stay 312 is pulled to rotate to the lower limit position H2. On the other hand, the fertilizing hose stay 313 is
2, the amount of pulling by the left and right fertilizer storage units 270B and the like is smaller, so that the middle position H between the upper limit position H1 and the lower limit position H2.
Rotate to 3.

The second fertilizing hose 272-2 from the outside
(Or 272-9) is substantially at the same position as the disconnected state maintaining lever 166 of the seedling removal amount adjusting shaft 97 in a plan view. At 166, there is a possibility that the lock of the uncoupled state of the seedling collection amount adjusting shaft 97 is released. To avoid this, the fertilizer hose stay 312,
The rotation angle of 313 is shifted.

The herbicide spraying device 6 includes a planting transmission case 62.
-Stays 320, 32 fixed to the rear end of -2, 62-4
0 two herbicide tanks 321, each supported by
321 so that the liquid herbicide in the tank is dropped from the nozzles 322 and 322 to the water surface of the field at regular intervals. As shown in FIG. 32, the switch 324 for determining the timing of dropping the herbicide is fixedly attached to the seedling mounting frame 85, and is attached to the back surface of the seedling mounting table 80 when the seedling mounting 80 moves left and right. The switch actuating member 325 causes the switch actuator 324 to operate.
When a is pressed, the switch is turned on. This switch 3
Reference numeral 24 also serves as a switch for detecting the left and right centers of the seedling mounting table 80 when the work is stopped or the like. Therefore, the herbicide is dripped when the seedling mounting table 80 passes through the left and right centers.

The paddy field working machine 1 is configured as described above, and the right and left widths of the body are reduced during transportation and storage as follows (FIGS. 33 and 34). (1) The auxiliary step 303 is rotated forward. (2) Remove the fixing tool 298, and store the left and right fertilizer storage units 270B,
Rotate 270B forward. Along with this, the left and right two fertilizing hoses 272 are also pulled forward. (3) The outer portions 38bB,... Of the seedling placing frames 38b,. (4) Outer portions 36a, 36 of the extension steps 36, 36
a is removed together with the side footrests 47,47. (5) Fold the marker support frames 41, 41,
The drawing markers 40 and 40 and the side markers 48 and 48 are stored. (6) Slide the auxiliary wheels 21, 21, 22, 22 inward.

(7) Seedling placement sections 80-1 for three rows at the left end,
Invert 80-2 and 80-3 upward and inward,
The seedling placing portions 80-9 and 80-10 corresponding to the two right end portions are turned upward and inward, and the seedling placing stand 80 is folded. Along with this, the rotating frames 85c, 8 of the seedling mounting support frame 85
5c is rotated backward. (8) Activate the seedling mounting drive mechanism so that the center of the folded seedling mounting 80 is located at the left and right center of the vehicle body. (9) Remove the locking tool 163 from the locked tool 164, and pull out the folded portions 97B and 97B of the seedling collection adjusting shaft outward. Then, the disconnection state maintaining lever 166 is operated to lock the seedling collection amount adjusting shaft 97 in the disconnected state. (10) Remove the removal parts 83B, 83B of the support rail 83. (11) The second connection pipe 64 of the transmission case 60 is bent upward by about 90 degrees at the middle part, and the outermost planted transmission case 6 is bent.
2-1 and 62-5 and two outer seedling-planting devices 90-1, 90-2, 90-9 and 90-1 attached thereto.
Rotate 0 upward. In conjunction with this, the folded portions 97B, 97B of the seedling collection amount adjusting shaft are folded upward, and the left and right end portions 211 of the float support shaft 211.
B, 211B rotate upward with the side floats 210S, 210S.

[0083]

As is apparent from the above description, the paddy working machine according to the present invention is configured such that when the drawing marker is turned from the working state to the non-working state, the turning speed is gradually reduced. Since the turning speed of the drawing marker immediately before stopping in the non-operating state is slow, the mud attached to the drawing marker does not scatter inside, and the airframe and the operator on the airframe are not stained with mud. Was.

[Brief description of the drawings]

FIG. 1 is a side view of a paddy field working machine in a working state.

FIG. 2 is a plan view of the paddy field working machine in a working state.

FIG. 3 is a rear view of a drawing marker attaching portion.

FIG. 4 is a plan view in which a part of a seedling planting part is omitted.

FIG. 5 is a rear view in which a part of a seedling planting part is omitted.

FIG. 6 is a side sectional view of a lower part of a seedling mounting table.

FIG. 7 is a view as viewed in the direction of the arrow A in FIG. 6;

FIG. 8 is a side view of the seedling mounting table in a state where the seedling mounting portions at the left and right outer ends are folded.

FIG. 9 is a partly omitted view taken along the arrow A in FIG. 8;

FIG. 10 is a view taken along the arrow A in FIG.

FIG. 11 is a cross-sectional view of an upper connecting portion between a seedling placement portion at a central portion and left and right outer seedling placement portions.

FIG. 12 is a cross-sectional view of a lower connecting portion between a seedling placement portion at a center portion and left and right outer seedling placement portions.

FIG. 13 is a front view of a main part of a seedling mounting support frame.

FIG. 14 is a rear view showing (a) a connected state and (b) a non-connected state of the divided portion of the support rail.

FIG. 15 is a plan view of a divided portion of a seedling collection amount adjusting shaft.

16 is a sectional view taken along line S1-S1 in FIG.

17 is a sectional view taken along line S2-S2 in FIG.

FIG. 18 is a rear sectional view of a bent portion of the transmission case.

19 is a sectional view taken along line S1-S1 in FIG.

20 is a sectional view taken along line S2-S2 in FIG.

FIG. 21 is a side view of a mounting portion of a side float.

FIG. 22 is a (a) plan view and (b) a plan view of a divided portion of the float support shaft.

FIG. 23 is a (a) plan view and (b) a side view of the mud drawer.

24 (a) is a side view of a rake before erasing front wheel marks, and FIG.
It is a top view and (c) a rear view.

FIG. 25 (a) is a side view of the rake after the front wheel mark is erased, and FIG.
It is a top view and (c) a rear view.

26 (a) is a plan view and FIG. 26 (b) is a rear view of an auxiliary rear wheel mark erasing rake.

FIG. 27 is a side sectional view of the main body of the fertilizer applicator.

FIG. 28 is a plan view of the main body of the fertilizer applicator.

FIG. 29 is a side view of the fertilizer apparatus main body in a folded state.

FIG. 30 is a front view of a handrail.

31 (a) is a side view and (b) is a rear view of the outer two fertilizer hose supports. FIG.

FIG. 32 is a view showing a mounting position of a herbicide spraying switch.

FIG. 33 is a side view of the rice transplanter in the left-right width reduced state.

FIG. 34 is a plan view of the rice transplanter in the left and right width reduced state.

FIG. 35 is a rear view of a different drawing marker mounting portion.

FIG. 36 (a) is a plan view of a different mud plate, and FIG.
It is a side view.

FIG. 37 is a plan view of a different front wheel mark erasing rake.

FIG. 38 is a rear view of a conventional drawing marker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rice transplanter (paddy work machine) 2 Running vehicle body 3 Elevating link device 4 Seedling planting part 5 Fertilizer application device 6 Herbicide spraying device 40 Draw marker 41 Marker support frame 43 Marker operating wire 80 Seedling stand 200 Seedling plant 210 float

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Sumi Fukushima, 1-Yakura, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. (72) Inventor: Shin Yamaguchi, No. 1, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. (72) Inventor: Mitsutaka Izumi, Yachikura, Tobe-cho, Ehime Prefecture, Japan

Claims (1)

[Claims] In a paddy field working machine that performs agricultural work on a field while advancing the airframe, a drawing marker is drawn on the topsoil surface to draw a position on the topsoil surface where the airframe passes in the next step as the airframe advances. In addition to being rotatably provided between an operating state and a non-operating state where no drawing is performed, when the drawing marker is rotated from the operating state to the non-operating state, the rotation speed is gradually reduced. Paddy working machine.