JPH09107755A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter designed to carry a fertilizer delivered from a delivery case to a planting part by smoothly joining it with the carrying wind from an air tank without causing any fertilizer clogging. SOLUTION: In this rice transplanter so designed that an air tank 42 to feed fertilizer carrying wind, a fertilizer delivery case 38 and a carrying hose 40 to feed a fertilizer to a planting part are mutually connected by a hose joint 69, the bottom 66 of the fertilizer delivery case is provided, funnel fashion, at the joining point 134 of the outlet 67 of the fertilizer delivery case and the fertilizer inlet 70 of the hose joint 69 to allow a fertilizer to drop in the form of spiral flow.

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, a fertilizer inlet of a hose joint through which a fertilizer-carrying air from an air tank flows,
The merging portion with the outlet of the feeding case is eccentric from the drive shaft core of the feeding roll, and the fed fertilizer from the feeding roll is dropped substantially linearly to the merging portion. However, in the case of a structure in which fertilizer is conveyed by such an air flow of wind, fertilizer clogging occurs because the fertilizer on the outlet side of the feeding case adheres to the vicinity of the outlet due to wind blowing and is damaged. There is a problem that it is easy.

[0003]

Therefore, the present invention provides an air tank for supplying fertilizer transport air, a fertilizer feeding case for delivering fertilizer, and a transport hose for delivering fertilizer to a planting section.
In rice transplanters that are connected by hose joints,
The bottom of the fertilizer feeding case is formed into a funnel shape with respect to the confluence of the fertilizer feeding case outlet and the fertilizer inlet of the hose joint, and the fertilizer is dropped in a spiral flow. In addition to facilitating the smooth fall of fertilizer without accumulation, even when fertilizer powder is accumulated at the outlet of the feeding case, the fertilizer powder accumulated by this spiral flow is removed and removed to ensure the occurrence of fertilizer clogging. To prevent.

Further, the fertilizer fed from the feeding roll is directly aggregated into the outlet so that the fertilizer fed from the feeding roll becomes a lump in such a manner that it is provided so as to have a certain inclination angle over the entire circumference of the bottom side wall of the feeding case from the feeding roll to the outlet of the feeding case. It prevents the fertilizer from being clogged with the fertilizer.

Further, the merging portion is provided at a position closest to the air tank to increase the suction force of the carrier air at the outlet of the feeding case, thereby facilitating good merging of the fertilizer.

Furthermore, in a rice transplanter in which an air tank for supplying fertilizer-carrying air, a fertilizer feeding case for feeding fertilizer, and a conveying hose for feeding fertilizer to the planting section are connected by a hose joint, the fertilizer feeding case At the confluence of the outlet and the fertilizer inlet of the hose joint, a cleaning member for preventing clogging of fertilizer is provided, and the cleaning member is connected to the roll drive shaft of the feeding roll, for example, fertilizer with a lot of powder,
Even under high-humidity conditions and other work conditions that tend to cause fertilizer clogging, the cleaning member can prevent adhesion of fertilizer powder, etc. at the merging point to ensure reliable air flow of fertilizer without clogging. Is possible.

Further, the cleaning member is formed of a coil spring having a small wire diameter to prevent the clogging of the fertilizer at the confluent portion well, and the space inside the coil prevents the cleaning member from being discharged. It is possible to promote smooth merging of fertilizer.

[0008]

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 confluence portion of the feeding case, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view of the same. In FIG. 1, (1) is a traveling vehicle on which an operator rides, 2) is 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 figure is a planting section provided with a seedling table (16) for planting 6 rows and a plurality of planting claws (17), which are made of a synthetic resin having a high front and low front. 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.

Further, reference numeral (29) in the drawing denotes 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 hopper (37) which is a fertilizer tank for storing fertilizer, a fertilizer feeding case (38) which supplies a constant amount of fertilizer, and a float (34) which is a fertilizer 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, the left and right base frames (45) and (45) are provided on both sides of the horizontal frame (44) which extends laterally between the upper ends of the left and right columns (43) at the rear end of the body frame (3). And the fertilizer applicator (3) through the base frame (45) which is horizontally mounted 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) (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 person is welded and fixed to the front frame (53), and the left and right bearing plates (51) are attached.
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 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, the lower outlet (62) of the hopper (37) is fitted into the inlet (61) on the front side of the upper surface of the feeding case (38), and the feeding case is also provided. (38) Exit (63) on the front lower side
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.

Further, a bottom lid (66) which is a case bottom is provided on the lower surface of the feeding case (38) through a closing lever (65).
Is detachably fixed, and an outlet (67) is formed on the lower surface of the bottom lid (66) made of hard synthetic resin. A joint pipe (made of soft synthetic resin for fitting the front end portion to the air tank (42) ( 68), the front end of the hose joint (69) made of hard synthetic resin 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). The blower (4
1) Air blow from the air tank (42) to each pipe (68)
... and the hose (40) to move the fertilizer that drops from the outlet (67) of the bottom lid (66) to the middle of the joint (69) to the transfer hose (40) and forms a T-shaped flange. (69) Entrance (7
0) is opened upward and the outlet (6) of the bottom lid (66) is
The fitting cap (71) is fixed to 7), the cap (71) is detachably fitted to the outer wall of the inlet (70), and the outlet (67) is connected to the inlet (70).
A mounting plate (72) is integrally fixed to the air tank (42), and the joint (69) is bolted to the mounting plate (72).

Further, the intake port (73) and the outlet port (74)
, A feed plate (77) which is a feed roll having a plurality of substantially square feed outlets (76) on the same circumference, and an outlet plate (79) having a discharge port (78). And each plate (75) (77) (7)
9) is arranged in a multilayered manner between the feeding case (38) and the bottom lid (66), and the feeding shaft (80), which is a roll drive shaft, is rotatably supported on the feeding case (38) substantially vertically. Then, the lower end of the feeding shaft (80) is made to penetrate the center of each plate (75) (77) (79), and the spring (81) is elastically pressed from below on the lower surface of the outlet plate (79). ) (77)
(79) is supported downward on the feeding shaft (80) so that the plate (75) (7) can be pulled out by the closing lever (65).
7) (79) is 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), and each plate (75) is locked. ) (79)
The payout shaft (80) is allowed to freely rotate, and the payout plate (77) is supported by the payout shaft (80) to engage the payout shaft (80).
0) forcibly rotate the feeding plate (77) to move the fertilizer from the intake port (73) to the discharge port (78) and drop it toward the outlet (67). I am configuring.

A rubber partition plate (8) for removing excess fertilizer on the upper surface of the delivery port (76) at the end of the intake port (73).
2), the partition plate (82) is attached to the feeding case (38) through the photographing (83) for height adjustment so that the height of the partition plate is adjustable, and The height is adjusted from the outside of the feeding case (38), and the fertilizer delivery amount of the feeding outlet (76) is adjusted.

The outlet (7) of the inlet plate (75)
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) is extended rearward from the mission case (4). At the same time, the bearing case (87) is welded and fixed to the left column (43), and the input shaft (88) of the bearing case (87) is placed in the middle of the PTO shaft (86) (8).
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.

A feeding amount adjusting lever (96) is pivotally supported on the left bearing plate (51) via a bracket (94) and a shaft (95), and a support shaft (51) is attached to the left bearing plate (51). 97), an adjustment link (98) and a fulcrum link (99) are provided, and the screw part (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.

A feeding drive shaft (104) is rotatably supported by the rear frame (93) through a bearing plate (103), and a swing arm (105) is supported on 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 on the rear frame (93) through a non-rotating one-way clutch (108), and the one-way clutch is supported on the clutch shaft (109). An input link (111) is provided through (110), and the feeding 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.

In addition, the stud clutch case (114) is fixed to the feeding case (38), and the input shaft (117) is always attached to the upper end side of the feeding shaft (80) via bevel gears (115) (116). A clutch (not shown) for connecting the input shaft (117) to the clutch shaft (109) in a separable manner is internally provided in the clutch case (114).
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. 12 to 14,
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 viewing hole (124) having a long diameter in the lateral direction.
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 jet port (125) which is an air inlet port formed in a tapered shape from the air intake side to be joined to the joining pipe (68) toward the air blowing side. A fertilizer drop opening (127) which is a fertilizer inlet formed by a cylinder (126) having the inlet (70), and a confluence outlet (128) for joining the delivery side to the transfer hose (40). It is formed on the hose joint (69), and the spout (125) and the delivery port (128) are arranged on substantially the same straight line, and fertilizer is dropped at the joint between the spout (125) and the delivery port (128). The mouth (127) is connected. Then, the cylinder (12
The cylinder (126) is inclined in a direction in which the inlet (70) side of 6) approaches the air tank (42), and the receding angle is set to a direction perpendicular to the air ejection direction from the ejection port (125) of the hose joint (69). Fertilizer outlet (12
7) is inclined, that is, the fertilizer drop opening (127) is formed with an acute angle with respect to the air ejection opening (125), and the air ejected from the ejection opening (125) moves into the falling opening (127). , The air is the inlet (70) of the drop port (127)
It is prevented from blowing into the fertilizer feeding case (38).

Furthermore, a straight portion (125a) having a small diameter and having a constant length is formed at the end of the air jet outlet (125) to make the jet flow velocity uniform, and the straight portion (125a) and the fertilizer fall. A wall portion intersecting with the mouth (127) is formed in a nose portion (126a) having an acute angle so as to prevent air from rising from the straight portion (125a) to the drop mouth (127). And the straight part (12
The end part (125b) of 5a) is opened substantially below the center of the fertilizer drop port (127), and the jet flow of air from the air jet port (125) causes the fertilizer to drop toward the confluence outlet (128) where the pressure becomes negative. It sucks the air from the mouth (127), and also the merge outlet (128) on the downstream side of the air jet (125).
Is formed in a divergent shape, and an inclined surface (129) inclined downward toward the connection portion of the transfer hose (40) is formed into the confluent delivery port (12).
8) Formed on the bottom surface to prevent fertilizer accumulation at the bottom of the merge outlet (128) downstream of the air jet (125).

Further, a hook-shaped protrusion (130) is provided on the outer periphery of the inlet (70) of the hose joint (69) connected to the fertilizer feeding case (38), and a cylinder (126) forming the protrusion (130). ) A trapezoidal inclined surface (131) is provided at the opening edge, and the inner diameter of the lower end side is larger than that of the flexible rubber fitting cap (71) fitted in the outlet (67) of the bottom lid (66). Larger size, fitted with a cap (7
The end surface of the vertical cross section of 1) is formed in a V shape, and the lower end side is formed to be widened toward the end. Further, a thick ridge (132) is provided on the inner periphery of the middle portion of the fitting cap (71), and the fitting cap (7)
When the thin projections (133) are provided on the inner periphery of the lower end of (1) and the fitting cap (71) is covered from above from the upper side of the cylinder (126) of the hose joint (69), these projections (13)
2) (133) is elastically and closely attached to the trapezoidal slope (131), and 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).

By the way, the feeding case bottom lid (66) is formed in a funnel shape of an inverted cone, and is provided so that the center of the outlet (67) is located directly below the extension line of the axis of the feeding shaft (80). , When a certain amount of fed fertilizer is discharged together with the wind force from the outlet (74) from the outlet (78) located at a certain distance from the feeding shaft (80), the rotational inertia by the feeding plate (77) By the action, the fertilizer is spirally rotated about the payout shaft (80) and dropped to the outlet (67) to promote smooth discharge without clogging of the fertilizer at the outlet (67). There is.

That is, the bottom cover (66) is connected to the drive shaft (80).
Formed in the shape of an inverted conical funnel centered around, and dropping the fed fertilizer in a spiral flow, making the fall flow of the fertilizer smooth and less likely to cause deposition, and to the hose joint (69). The joining force is also large when merging, the air blowback from the hose joint (69) is also reduced, and even if the fertilizer is damaged, it is forcibly dropped by the fertilizer that falls in a spiral flow, and the bottom lid is also used. The side wall of (66) has a uniform inclination angle (α) over the entire circumference to eliminate the minimum inclination angle portion to effectively prevent the fertilizer from accumulating, and from the outlet (67). It is configured to promote smooth discharge of fertilizers from.

Further, the diameter (a) of the outlet (67) of the bottom lid (66) is formed larger (for example, a = 28) than the conventional diameter (for example, 25 mm), and the inlet (67) of the hose joint (69) is formed. 70) diameter (b) to this diameter (a)
The fertilizer is formed to be larger (b> a) so that the fertilizer can be smoothly received and dropped from the outlet (67) to the inlet (70) without accumulation.

Further, the outlet (67) of the bottom lid (66)
And the inlet (70) of the hose joint (13)
4) A cleaning member (135) for preventing clogging of fertilizer is provided. The cleaning member (135) is formed by a coil spring (136) having a small wire diameter, and the outer diameter of the spring (136) is set to the outlet (67). And the upper end of the coil spring (136) via a torsion spring (138) to a spring holder (137) that is provided near the inner diameter of the inlet (70) and engages with and holds the lower end of the feeding shaft (80). When the fertilizer is fed by rotating the feeding shaft (80), the coil spring (136) is also rotated integrally with the outlet (6).
The coil spring (136) prevents the fertilizer powder and the like from adhering to 7) and the inlet (70).

The coil spring (136) does not prevent the fertilizer from falling because the inner circumference of the coil is a space.
In addition, the spring (13
6) is less likely to be subjected to a load due to rotation, and deposits etc. at the inlet of the bent hose joint (69) can be easily removed. Furthermore, a direction in which a spiral flow is drawn when the fertilizer falls from the discharge port (78) and a spring. The rotation direction of (136) is made the same direction, and the spring (136) is configured to prevent clogging of the fertilizer and promote smooth discharge of the fertilizer without obstructing the fall of the fertilizer. is there.

Further, as shown in FIG. 20, the bus (81)
The spring seat (139) of the above is projected on the inner circumference of the bottom cover (66) 3
The bolt (141) is unfastened and detachably fixed to the mounting boss (140) at a certain position, and the feeding plate (77) is symmetrically symmetrical so as not to obstruct the flow of the fertilizer from the discharge port (78) at the time of swirling and dropping. ) Boss (140) on the rotation direction (c) side
The mounting position of is shifted by a certain angle (θ) so as to promote smooth swirling and dropping of fertilizer.

[0038]

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 a rice transplanter in which a transfer hose (40) for feeding fertilizer to the soil is connected by a hose joint (69), the outlet (67) of the fertilizer feeding case (38) and the fertilizer inlet (70) of the hose joint (69) are connected. The bottom part (66) of the fertilizer feeding case (38) is formed into a funnel shape with respect to the confluence part (134) to drop the fertilizer in a spiral flow. It is possible to promote the smooth fall of fertilizer without any trouble, and even if the fertilizer powder is accumulated at the outlet (67) of the feeding case (38), the fertilizer powder accumulated by this spiral flow is removed and removed. Therefore, the occurrence of clogging of fertilizer can be reliably prevented.

The bottom (66) of the feeding case (38) extending from the feeding roll (77) to the outlet (67) of the feeding case (38) is provided so as to have an inclination angle (α) above a certain level. Therefore, it is possible to prevent the fertilizer fed from the feeding roll (77) from being lumped and directly falling to the outlet, and reliably preventing the clogging of the fertilizer.

Further, since the merging portion (134) is provided at the position which is the closest to the air tank (42), the suction force of the transport wind at the outlet (67) of the feeding case (38) is increased. It is possible to promote good merging of fertilizer.

Furthermore, an air tank (42) for supplying the fertilizer-carrying air and a fertilizer feeding case (3) for sending the fertilizer.
8) and a transfer hose (40) for feeding fertilizer to the planting section (15) by a hose joint (69), in a rice transplanter, an outlet (67) of the fertilizer feeding case (38) and a hose joint (38). 69) fertilizer inlet (7
The cleaning member (135) for preventing the clogging of fertilizer is provided at the confluence portion (134) with (0), and the cleaning member (135) is connected to the roll drive shaft (80) of the feeding roll (77). Therefore, even if the fertilizer has a large amount of powder or is in a working condition such as a high-humidity condition where the clogging of the fertilizer is likely to occur, the cleaning member (135) ensures that the fertilizer powder and the like adhere to the joining portion (134). In addition, it is possible to prevent the fertilizer from being clogged and to reliably transport the fertilizer without airflow.

Further, since the cleaning member (135) is formed by the coil spring (136) having a small wire diameter, it is possible to satisfactorily prevent the fertilizer from clogging at the merging portion (134), and the space inside the coil can be used. The cleaning member (135) can be prevented from obstructing the discharge, and the smooth merging of the fertilizer can be promoted.

[Brief description of the drawings]

FIG. 1 is a cross-sectional explanatory view of a joining portion of a feeding case.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of the 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.

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

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

FIG. 10 is an explanatory rear view of the base frame unit.

FIG. 11 is an explanatory rear view of the fertilizer feeding case portion.

FIG. 12 is an explanatory side view of a bearing plate portion.

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

FIG. 14 is an explanatory rear view of the same.

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

FIG. 16 is an explanatory side sectional view of the fertilizer feeding case.

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

FIG. 18 is a cross-sectional plan view of the same.

FIG. 19 is an exploded view of the bottom cover and the hose joint.

FIG. 20 is a plan view of the bottom lid.

[Explanation of symbols]

 (15) Planting part (38) Fertilizer feeding case (40) Transport hose (42) Air tank (66) Bottom lid (bottom) (67) Outlet (69) Hose joint (70) Inlet (77) Feeding plate (feeding roll) ) (134) Confluence part (135) Cleaning member (136) Coil spring

Claims (5)

[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 characterized in that the bottom of the fertilizer feeding case is formed in a funnel shape at the confluence of the fertilizer inlet of the hose joint and the fertilizer is dropped in a spiral flow. 2. The rice transplanter according to claim 1, wherein the rice transplanter is provided so as to have an inclination angle of a certain value or more on the entire circumference of the bottom side wall of the feeding case from the feeding roll to the outlet of the feeding case. 3. The rice transplanter according to claim 1, wherein the merging portion is provided at a position which is closest to the air tank. 4. 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, characterized in that a cleaning member for preventing fertilizer clogging is provided at the confluence of the fertilizer inlet of the hose joint and the releasing member is connected to the roll drive shaft of the feeding roll. 5. The rice transplanter according to claim 4, wherein the cleaning member is formed of a coil spring having a small wire diameter.