JPH09107752A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter designed to properly block the joint gap between a fertilizer delivery case and a hose joint by an engaging cap to prevent fertilizer leakages through the gap. SOLUTION: In this rice transplanter so designed that an air tank 42 to feed fertilizer carrying wind, a fertilizer delivery case and a carrying hose 40 to feed a fertilizer to a planting section are mutually connected by a hose joint 69, a flexible engaging cap 71 is provided so as to separably joint the outlet 67 of the fertilizer delivery case and the fertilizer inlet 70 of the hose joint 69.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter having, for example, a seedling mounting table and planting claws for continuously performing a seedling planting operation and a side-row fertilizing operation.

[0002]

Conventionally, an air tank for supplying fertilizer conveying air, a fertilizer feeding case for feeding fertilizer, and a conveying hose for feeding fertilizer to a planting part are connected by a hose joint, and the air tank There is a technology to send the fertilizer from the fertilizer feeding case to the transfer hose by the air. However, when the outlet of the fertilizer feeding case and the fertilizer inlet of the hose joint are formed so as to be separable, there is a problem that the airtightness of the connecting portion between the outlet and the inlet cannot be easily improved.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, an air tank for supplying fertilizer conveying air, a fertilizer feeding case for feeding fertilizer, and a conveying hose for feeding fertilizer to a planting portion are connected by a hose joint. The rice transplanter is equipped with a flexible mating cap that separates the fertilizer feeding case outlet and the fertilizer inlet of the hose joint from each other, and the fertilizer feeding case outlet and the fertilizer inlet of the hose joint are relatively positioned. Even if they are misaligned, these connection gaps can be properly closed by the fitting caps, and the fertilizer leakage between the outlet and the inlet can be easily prevented.

Further, the vertical cross-section end face of the fitting cap is formed in a V-shape to prevent the fitting cap from being improperly attached due to the positional deviation between the outlet of the fertilizer feeding case and the fertilizer inlet of the hose joint, and to prevent mechanical vibration. It is possible to easily prevent the fitting cap from coming off.

Further, the protrusion is projected on the inner peripheral side of the fitting cap to be fitted on the outer circumference of the fertilizer drop opening of the hose joint, and by pressing the projected ridge on the outer circumference of the fertilizer drop opening,
The airtightness of the fitting cap fitting portion can be easily improved, and the fertilizer leakage from the fitting cap fitting portion and the rainwater intrusion can be easily prevented.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a cross-sectional explanatory view of a hose joint portion, FIG. 2 is a side view of a rice transplanter for riding, and FIG. 3 is a plan view of the same, in which (1) is a traveling vehicle on which an operator rides, and an engine (2). Mounted above the front of the body frame (3),
The front wheel (6) for traveling paddy fields is supported in front of the mission case (4) through the front axle case (5), and the rear axle case (7) is connected to the rear portion of the gear shift case (4) to connect the rear axle case. The case (7) supports the rear wheel (8) for traveling in the paddy field. The spare seedling mounts (10) are attached to both sides of the hood (9) that covers the engine (2) and the like, and the mission case (4) is provided by the vehicle body cover (12) on which an operator rides through the step (11). The vehicle body cover (12) for covering
A driver's seat (13) is attached to the upper part, and a steering handle (1) is provided in front of the driver's seat (13) at the rear of the hood (9).
4) is provided.

Further, (15) in the drawing is a planting section comprising a seedling table (16) for planting 6 rows, a plurality of planting claws (17), etc. Forward tilting seedling stand (1
6) is supported on the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and at the same time, the rotary case (21) is rotated at a constant speed in one direction. The pair of claw cases (22) and (22) are supported at the case (20), and a pair of claw cases (22) and (22) are arranged symmetrically around the rotation axis of the case (21).
(22) Attach the planting claws (17) (17) to the tip. A support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and travels via a link mechanism (27) including a top link (25) and a lower link (26). A support frame (24) is connected to the rear side of the vehicle (1), and a lifting cylinder (28) for raising and lowering the planting section (15) is connected to the lower link (26) via the link mechanism (27). Front and rear wheels (6)
(8) is driven to move, and at the same time, the seedlings for one plant are planted from the seedling table (16) that slides back and forth to the left and right.
It is taken out according to 7) and the seedlings are planted continuously.

In the figure, (29) is a traveling speed change lever,
(30) is a sub gear shift lever for planting up / down and work traveling gear shifting,
(31) is a setting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals,
(34) is a two-floor leveling center float, (35) is a two-floor leveling float, and (36) is a six-floor side fertilizer.

Further, as shown in FIGS. 4 and 5, a fertilizer application hopper (37) which is a fertilizer tank for containing fertilizer, a fertilizer feeding case (38) which supplies a constant amount of fertilizer, and a float (34) which is a fertilizer application portion. A turbo blower type blower (41) for discharging fertilizer to the side-grooving groover (39) of (35) through a flexible type transfer hose (40) and a cylindrical air tank (42) are provided for the fertilizer applicator ( 36), a blower (41) is attached to the right end of the air tank (42), and six sets of six fertilizer feeding cases (38) ... Are arranged above the air tank (42).

Further, as shown in FIGS. 6 to 11, a horizontal frame (44) extending between upper ends of left and right supports (43) at the rear end of the vehicle body frame (3) and left and right base frames (45) and (45) on both sides. The fertilizer applicator (3) is mounted via the base frame (45), which is mounted substantially horizontally in the front-rear direction.
6) and the left and right base frames (45) (4)
5) The air tank (42) is bolted and fixed to the body frame (3) via brackets (46) and (46). A side stay (47) is connected between the rear end of the base frame (45) and the vehicle body frame (3). Front and rear elevating rails (48), (49)... Are erected on the front and rear sides of the base frame (45), and one set of front and rear two right and left pairs of four elevating rails (48) (48) are provided.
(49) The fertilizer applicator (36) is attached via the (49) so as to be able to move up and down, and a pair of left and right gas springs (5
0) The fertilizer applicator (36) is mounted to be able to move up and down by (50), and the weight of the fertilizer applicator (36) is supported by the rear axle case (7) arranged at the rear end of the body frame (3). As shown, the front and rear elevating rails (48) (4)
9) is provided with a bearing plate (51) opposed thereto, and bearing rollers (52) which are rotatably fitted to the rails (48) and (49) are rotatably supported by the bearing plate (51). Two sets of two rails (48) and (49) are provided symmetrically, and two upper and lower rollers (52) and (52) are attached to one rail (48) and (49). 51) (51) to four rails (48) (49) and 8
The base frame (45) by the rollers (52) ...
To be able to move up and down freely.

Further, the lower end of the gas spring (50) is connected to the vehicle body frame (3), and the bearing plate (5) is connected.
The upper end of the gas spring (50) is connected to 1), the rails (48) and (49) and the gas spring (50) are erected substantially in parallel, and the gas is positioned at the center of gravity of the fertilizer applicator (36) in the front-rear width direction. The spring (50) is connected so that the gas spring (50) has an extension force substantially equal to or slightly smaller than the weight of the fertilizer applicator (36).

Further, as shown in FIGS. 12 to 15, the left and right bearing plates (51) and (51) are integrally fixed by a round pipe-shaped front frame (53) and work is performed when lifting the fertilizer applicator (36). A handle (54) grasped by a worker is fixed to the front frame (53) by welding, and the left and right bearing plates (51) are fixed.
The left and right lock levers (56) and (56) are rotatably supported on the (51) via the support shafts (55) and (55), and the left and right lock levers (5) are mounted on the front left and right lifting rails (48) and (48).
6) The left and right bearing plates (51) are locked via the (56) (51), and the left and right lifting rails (49) on the rear side are locked.
Left and right lock pins (57) and (57) are slidably attached to (49), and the engagement holes (5) of the bearing plate (51) shown in FIG.
8), the lock pin (57) is detachably engaged, and the left and right bearing plates (5) are attached to the rear left and right elevating rails (49) (49).
1) (51) The rear portion is locked via left and right lock pins (57) and (57), and the front and rear portions of the bearing plate (51) are locked to the front and rear elevating rails (48) and (49) by the lock lever (56). And the lock pin (57). Further, as shown in FIGS. 15 and 19, vertical engaging holes (58) (59) are formed in the elevating rail (48), and the engaging holes (58) (5) are formed.
9) Engage the lock lever (56) into the fertilizer applicator (3
6) for fixing and supporting 6) in a raised position or a lowered position, and a handle (54) which extends a lock lever (56) to a lower side of the handle (54) so as to project to a driver seat (13) side.
The operator can operate the lock lever (56) by grasping the lock lever (56) to disengage the lock lever (56) from the engagement holes (58) (59).

A case front bracket (60) is fixed to the front frame (53) by welding, and the front side of the feeding case (38) is fixed to the case front bracket (60) by bolts. Central 2
The feed-out case (38) (38) is disposed between the left and right lifting rails (48) and (49), and the lifting rail (48)
(49) Outer case for left and right two lines on the outside of the machine (38)
(38) are arranged respectively, and a three-unit feeding case (38)...

Further, as shown in FIGS. 16 to 18, a lower outlet (62) of the hopper (37) is fitted to an inlet (61) on the upper front side of the feed case (38). (38) Exit on the lower front (63)
The outlet (63) is closed by a removable cap (64). The cap (64) is removed, the opening (63) is opened, and the fertilizer inside the hopper (37) is caused to flow downward on the front side. At this time, the fertilizer (36) is moved up and down rails (48) (49). At a raised position, the distance between the outlet (63) and the lower air tank (42) is increased, and a container for storing fertilizer is placed in the outlet (6).
3) It is configured so that it can be easily inserted below and the residual fertilizer can be easily taken out.

A bottom cover (66) is detachably fixed to the lower surface of the feeding case (38) via a closing lever (65), and an outlet (67) is formed on the lower surface of the bottom cover (66) made of hard synthetic resin. ) To form an air tank (42).
A soft synthetic resin joint pipe (6
8), the front end of a hose made of hard synthetic resin (69) is detachably fitted to the rear end of the pipe (68), and the transfer hose (40) is fitted to the rear end of the joint (69). Then, the blower (41) blows air from the air tank (42) to each pipe (68).
0), and the fertilizer which falls from the outlet (67) of the bottom cover (66) to the middle of the joint (69) is transferred to the transfer hose (4).
The joint (69) forming a T-shaped flange has an inlet (70) formed upwardly and open, and a fitting cap (71) is provided at an outlet (67) of the bottom lid (66). The cap (71) is removably fitted to the inlet (70), the outlet (67) is connected to the inlet (70), and the air tank (42) is fixed.
The mounting plate (72) is integrally fixed to the mounting plate (72), and the joint (69) is fixed to the mounting plate (72) by bolting.

Further, an inlet (73) and an outlet (74).
And an outlet plate (77) having a plurality of substantially square outlets (76) on the same circumference, and an outlet plate (79) having an outlet (78). The plates (75), (77) and (79) made of circular flat plates are arranged in a multi-layer structure between the feeding case (38) and the bottom cover (66), and the feeding shaft (80) is attached to the feeding case (38). Is rotatably supported substantially vertically, the lower end side of the payout shaft (80) is passed through the central portion of each plate (75) (77) (79), and the outlet plate (7
9) A spring (81) is elastically pressed from the lower side to the lower surface, each plate (75) (77) (79) is supported downward by a feeding shaft (80), and each plate is closed by a closing lever (65). (75), (77), (79) are elastically pressed between the feeding case (38) and the bottom lid (66), and the inlet plate (75) and the outlet plate (79) are locked to the feeding case (38). While letting out the payout shaft (80) with respect to each plate (75) (79), the payout plate (77) is supported by the payout shaft (80) as an engaging shaft, and the payout shaft (80) causes the payout plate (77) to rotate. ) Is forcibly rotated to move fertilizer from the intake port (73) to the delivery port (76) to the discharge port (78) and drop it toward the outlet (67).

Further, a brush (82) for removing excess fertilizer on the upper surface of the feeding port (76) at the end of the inlet (73) is provided, and the brush (8) is adjusted via a height adjusting photograph (83).
2) is attached to the feeding case (38) so as to be adjustable in height, the height of the lower end of the brush (82) with respect to the upper surface of the feeding plate (77) is adjusted from the outside of the feeding case (38), and the feeding outlet (76).
Is configured to regulate the amount of fertilizer delivered.

Further, the outlet (7) of the inlet plate (75) is provided.
The compressed air intake (84) facing to 4) is extended to the feeding case (3).
8), the hollow portion of the air tank (42) and the compressed air inlet (84) are communicated with each other by a branch pipe (85), and the blower (41) is connected through the pipe (85) and the inlet (84). ) And air from the air tank (42) are supplied to the outlet (74), and are sent from the outlet (74) to the outlet (76) moved to the position of the outlet (78). ) Is forcibly dropped downward to prevent the granular fertilizer or this powder from remaining in the outlet (76).

Further, as shown in FIGS. 7, 10 and 15, a PTO shaft (86) for transmitting the output of the engine (2) to the planting portion (15) extends rearward from the transmission case (4). At the same time, a bearing case (87) is welded and fixed to the left support (43), and the input shaft (88) of the bearing case (87) is connected to the chain (8) between the PTO shaft (86).
The crank plate (91) is detachably fixed to the rear end of the output shaft (90) of the bearing case (87) by a ball lock structure. Further, a square pipe-shaped rear frame (93) for integrally fixing the bearing plate (51) and the case rear bracket (92) is provided, and the rear frame (93) is substantially parallel to the air tank (42) and the front frame (53). Put it on the side, and put the bracket (9
In 2), the rear side of the feeding case (38) is bolted and fixed.

Further, a feeding amount adjusting lever (96) is supported on the left bearing plate (51) via a bracket (94) and a shaft (95), and a supporting shaft (51) is mounted on the left bearing plate (51). 97), an adjusting link (98) and a fulcrum link (99) are provided, and the screw portion (10) of the lever (96) is provided.
0) is connected to the adjustment link (98), and the fulcrum link (9)
9) Attach an adjustment fulcrum (101) to the fulcrum (101).
To support the drive arm (102). By rotating the screw portion (100) by rotating the lever (96) projecting toward the driver's seat (13),
The links (98) and (99) rotate integrally to change the position of the adjustment fulcrum (101), and the operator of the driver's seat (13) can adjust the extension of the lever (102). It is configured as follows.

Further, a feed drive shaft (104) is rotatably supported on the rear frame (93) via a bearing plate (103), and a swing arm (105) is attached to the drive shaft (104).
And the drive arm (102) is connected to one end of an extendable rod (106) whose length is adjustable, and the swing arm (105) is connected to the other end of the extendable rod (106). The crank plate (91) is connected to the drive arm (102) via an input rod (107), and the PTO shaft (86) for planting drive is connected via the input rod (107) and the drive arm (102). The driving force is transmitted to the feeding drive shaft (104), an operation for simultaneously operating and stopping the planting section (15) and the fertilizer applicator (36) is performed by turning on and off a planting clutch (not shown). ), An operation of removing the crank plate (91), separating the drive unit, and raising the rising portion of the fertilizer applicator (36) is performed. By operating the lever (96), the adjustment fulcrum (1) is operated.
01) is changed, and the reciprocating stroke of the telescopic rod (106) is changed steplessly, so that the fertilizer delivery amount is continuously adjusted.

Further, as shown in FIG. 9, a clutch shaft (109) is rotatably supported by the rear frame (93) via a one-way clutch (108) for preventing rotation, and the one-way clutch is connected to the clutch shaft (109). An input link (111) is provided via the (110) and the feed drive shaft (10
4) Fix the swing link (112) to the link (1).
12) is linked to the input link (111) by the link rod (11).
3), the input link (111) is swung to rotate the clutch shaft (109) intermittently in one direction.

[0023] In addition, a locking clutch case (114) is fixed to the feeding case (38), and the input shaft (117) is constantly connected to the upper end of the feeding shaft (80) via bevel gears (115) and (116). An engaging clutch (not shown) for connecting and disconnecting an input shaft (117) to the clutch shaft (109) is provided inside the clutch case (114) and the case (1).
A clutch lever (118) and a clutch arm (119) for disconnecting and operating the locking clutch of (14) are separately arranged before and after the clutch case (114), and the seedling table (16) of the planting portion (15) is arranged. ) The clutch arm (119) is connected to a planting streak unit clutch lever (120) provided on the upper rear surface via a stap wire (122) that is stretched by an outer receiver (121) of the rear frame (98). Connect. Then, when any of the planting claws (17)... For 6-row planting is stopped by operating the planting streaking unit clutch lever (120),
The case (11) corresponding to the stopped planting claw (17)
The fertilizing operation is stopped by disengaging the line-stopping clutch of 4), and fertilizing is performed only on the line where the seedlings are planted by the planting claws (17).

Further, as shown in FIGS.
The left and right bearing plates (51) and (51) are welded and fixed to the front frame (53) and the rear frame (93) outside the mounting position of the fertilizer feeding case (38) (38) for the center two rows.
Both ends of the front frame (53) and the rear frame (93) are integrally fixed by left and right side frames (123) (123), and the fertilizer feeding case (38) (3)
8) is attached to the front frame (53) and the rear frame (93) between the bearing plate (51) and the side frame (123), and each of the rectangular frames (53), (93) (1)
23) is divided into three equal parts in the left-right direction by a bearing plate (51), and a fertilizer feeding case (38) for six rows is supported between the front and rear frames (53) (93).

As shown in FIGS. 13, 16, and 18, a bracket (60) provided between the feeding case (38) and the front frame (53) has a laterally long sight hole (124).
When assembling the bottom cover (66) to the feeding case (38), it is possible to easily check the phase and the like from the front side without going around the seedling mounting table (16) side. It is configured to improve handling.

Further, as shown in FIG. 16, in connection with the hose joint (69) and the transfer hose (40), the outlet inner diameter portion (69a) of the hose joint (69).
The outer diameter portion (40a) of the inlet of the transfer hose (40) is directly inserted and coupled without using a separate joint or the like to make a lightweight and compact structure and facilitate the attachment / detachment operation for maintainability. It is configured to improve.

Further, as shown in FIGS. 1 and 19, an air ejection port (125) formed in a taper shape from the air intake side to be joined to the joining pipe (68) toward the air blowing side.
A fertilizer drop opening (127) formed by a cylinder (126) with the inlet (70), and the transfer hose (4)
In the hose joint (69), a confluent delivery port (128) for joining the delivery side to 0) is formed in the hose joint (69), and the ejection port (125) and the delivery port (128) are arranged on substantially the same straight line. The fertilizer drop port (127) is connected to the joint between the jet port (125) and the delivery port (128). Then, the cylinder (126) is inclined in a direction in which the inlet (70) side of the cylinder (126) approaches the air tank (42),
The fertilizer drop port (127) is formed by inclining the hose joint (69) in the opposite direction to the air jet direction from the jet port (125), and the air jetted from the jet port (125) is formed into the drop port (127). ), And the air moves into the fertilizer feeding case (38) from the inlet (70) of the drop opening (127).
It prevents it from blowing inside.

Further, the air ejection port (12
5) The end is opened substantially below the center of the fertilizer drop port (127), and the jet of air from the air jet port (125) causes a negative pressure to the fertilizer drop port (12) toward the merge outlet (128).
The air of (7) is sucked and the air jet port (125)
The merging and discharging port (128) on the downstream side of the merging port (128) is formed in a divergent shape, and a slope (129) inclined downward toward the connecting portion of the transfer hose (40) is formed on the bottom surface of the merging and discharging port (128). 125) Prevents fertilizer accumulation at the bottom of the downstream merge outlet (128).

Further, a hook-shaped projection (130) is provided on the outer circumference of the fertilizer drop opening (70) of the hose joint (69) connected to the fertilizer feeding case (38), and the projection (13) is provided.
0) forming a trapezoidal slope (13) at the opening edge of the cylinder (126).
1) and the outlet (67) of the bottom lid (66)
The inner diameter of the lower end side is made larger than the inner diameter of the upper end side of the flexible rubber fitting cap (71) to be fitted to the fitting cap (71), and the longitudinal end surface of the fitting cap (71) is formed in a V shape, and the lower end side is widened. To form. Further, a thick ridge (132) is provided on the inner periphery of the middle portion of the fitting cap (71), and a thin ridge (133) is provided on the inner periphery of the lower end of the fitting cap (71), so that the hose joint (69) When the cylinder (126) is covered with the fitting cap (71) from above, the thick ridges (1
32) is elastically and closely attached to the trapezoidal slope (131), and the thin projection (133) is locked to the hook-shaped projection (130), so that the gap between the outlet (67) and the inlet (70) is fitted with the fitting cap ( 7
It is configured to be sealed by 1).

As is clear from the above, the air tank (42) for supplying the fertilizer conveying air, the fertilizer feeding case (38) for feeding the fertilizer, and the conveying hose (40) for feeding the fertilizer to the planting section (15). ) Is connected by a hose joint (69) to a fertilizer feeding case (38).
(67) and the fertilizer inlet (70) of the hose joint (69) are detachably connected, and a flexible fitting cap (71) is provided, and the outlet (6) of the fertilizer feeding case (38) is provided.
7) and the fertilizer inlet (70) of the hose joint (69) are displaced relative to each other, these connecting gaps are properly closed by the fitting cap (71), and the fitting cap (71) is longitudinally cut. The end faces of the fertilizer feeding case (38) and the hose joint (6) are formed in a V shape.
9) Preventing improper mounting of the fitting cap (71) due to the displacement of the fertilizer inlet (70), and preventing the fitting cap (71) from coming off due to mechanical vibration, etc., and the fertilizer drop opening of the hose joint (69). (127) Fitting cap (71) to be fitted on the outer circumference, and ridges (132) on the inner circumference side
(133) is projected, and the protrusions (132) (133) are elastically pressed to the outer circumference of the fertilizer drop opening (127), and the fitting cap (7)
1) It is intended to prevent the fertilizer from leaking from the fitting part and the intrusion of rainwater.

Further, as shown in FIG. 20, the feeding end side of the transfer hose (40) is fixed to the planting case (20) through a hose holder (134), and the seedling mounting table (16) is reciprocated left and right. Left and right seedling support columns (135) (135) that are slidably supported are vertically fixed to the planting case (20), and a hose mounting frame (136) is fixed between the columns (135) (135) for transportation. Hose joint pipe (137) made of hard synthetic resin to be connected to the middle of the hose (40)
Are fixed to the frame (136). Further, the hose joint pipe (137) is provided with an air bleeding pipe (139) having an openable / closable lid (138) that is closed by its own weight.
It is integrally formed on the right side of the, and each of the six hose joint pipes (137) is formed in the same shape structure, and the compatibility with any of the six lines improves the assembly workability. .

Further, as shown in FIG. 21, an air vent pipe (140) is provided in the middle of the transfer hose (40) at a high position close to the hose joint (69), and the pipe (4)
A diaphragm (142) is provided in the air vent (141) of (0), and when the fertilizer is clogged at the feeding end side of the transfer hose (40), a predetermined amount or more of air is discharged from the air vent (141). As a result, an alarm sound is generated by the vibration of the vibrating plate (142), and the worker is alerted to the poor fertilizer transport.

[0033]

As is apparent from the above embodiments, the present invention is an air tank (42) for supplying fertilizer-carrying air, a fertilizer feeding case (38) for feeding fertilizer, and a planting section (15).
In the rice transplanter in which the transfer hose (40) for feeding fertilizer to the plant is connected by the hose joint (69), the outlet (67) of the fertilizer feeding case (38) and the fertilizer inlet (70) of the hose joint (69) are separated. A flexible fitting cap (71) for freely connecting is provided, and an outlet (67) of the fertilizer feeding case (38) and a hose joint (6) are provided.
Even if the fertilizer inlet (70) of 9) is relatively displaced, these connecting gaps can be properly closed by the fitting cap (71), and the fertilizer leaks between the outlet (67) and the inlet (70). It can be easily prevented.

The fitting cap (71) has a vertical cross-section end face formed in a V shape, and the fertilizer feeding case (38).
(7) and the fertilizer inlet (70) of the hose joint (69) are misaligned to prevent the fitting cap (71) from being improperly attached and to prevent the fitting cap (71) from coming off due to mechanical vibration or the like. Is something that can be done.

A fitting cap (71) fitted to the outer circumference of the fertilizer drop opening (127) of the hose joint (69).
The ridges (132) (133) are projected to the inner peripheral side, and the ridges (132) (13) are provided on the outer circumference of the fertilizer drop opening (127).
By pressing 3), the airtightness of the fitting portion of the fitting cap (71) can be easily improved, and the fertilizer leakage from the fitting portion of the fitting cap (71) and the intrusion of rainwater can be easily prevented. Can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a hose joint section.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of a fertilizer application unit.

FIG. 5 is a rear view of the same.

FIG. 6 is an explanatory side view of the same.

FIG. 7 is an explanatory side view of a lifting rail portion.

FIG. 8 is an explanatory side view of a fertilizer feeding case portion.

FIG. 9 is an explanatory plan view of a fertilizer feeding case portion.

FIG. 10 is a rear view of the base frame portion.

FIG. 11 is a rear view for explaining the fertilizer feeding case portion.

FIG. 12 is a side view illustrating a bearing plate portion.

FIG. 13 is an explanatory plan view of a handle portion.

FIG. 14 is a rear view of the same.

FIG. 15 is an explanatory side view of the same.

FIG. 16 is a sectional side view of a fertilizer feeding case.

FIG. 17 is an explanatory rear view of the same section.

FIG. 18 is an explanatory plan view of the same section.

FIG. 19 is a side view of the hose joint section.

FIG. 20 is a rear view of the transfer hose section.

FIG. 21 is a side view of the same portion.

[Explanation of symbols]

 (15) Planting part (38) Fertilizer feeding case (40) Transport hose (42) Air tank (67) Outlet (69) Hose joint (70) Inlet (71) Fitting cap (127) Fertilizer drop port

Claims (3)

[Claims] 1. An outlet of a fertilizer feeding case in a rice transplanter in which an air tank for feeding fertilizer-carrying air, a fertilizer feeding case for feeding fertilizer, and a transport hose for feeding fertilizer to a planting section are connected by a hose joint. A rice transplanter, which is provided with a flexible fitting cap that connects the fertilizer inlet of the hose joint to each other in a separable manner. 2. The rice transplanter according to claim 1, wherein an end surface of the fitting cap in a vertical cross section is formed in a V shape. 3. A rice transplanter characterized in that a protrusion is projected on an inner peripheral side of a fitting cap to be fitted on an outer circumference of a fertilizer drop opening of a hose joint.