JPH08228544A - Farm working machine with fertilizing device - Google Patents

Abstract

PURPOSE: To provide the subject machine designed to prevent the machine body-constitutive members from corrosion due to fertilizer by ensuring fertilizer not to spill on the machine body in replenishing fertilizer into a tank. CONSTITUTION: A tank 50 to reserve liquid fertilizer is disposed in such a manner that a part thereof lies out of the machine body and the other parts are situated on the machine body, a fertilizer-replenishing port 50a is provided on the upper surface of the tank, and a weir part 50c to stop the spilling of the fertilizer on the upper surface of the tank down onto the machine body is furnished on the upper surface of the tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural working machine equipped with a seedling planting machine, a seeding machine and the like, and a fertilizer application system equipped with a fertilizer application machine for performing fertilizer application of a liquid fertilizer in a paste or liquid form. Regarding agricultural machinery.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 6-209615 discloses a tank for storing a fluid fertilizer, which is arranged such that a part of the tank is located outside the machine body and the other part is located on the machine body. An agricultural working machine equipped with a fertilizer applying device having a fertilizer supply port is disclosed.

[0003]

In an agricultural working machine equipped with a fertilizer application device for fluid fertilizer, when fluid fertilizer is replenished from a fertilizer replenishing port provided on the upper surface of the tank, the fertilizer suddenly goes out of hand and the fertilizer is outside the fertilizer replenishing port. It may fall on the top surface, or may overfill the fertilizer and overflow from the fertilizer supply port to the top surface of the tank. At this time, in the conventional machine, the fertilizer placed on the upper surface of the tank may flow down onto the machine body below the tank, and the flow-down fertilizer may corrode the machine body constituent members.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the conventional apparatus, according to the present invention, a tank for storing fluid fertilizer is partly out of the machine body while the other part is located on the machine body. The fertilizer application device is characterized in that the fertilizer replenishing port is provided on the upper surface of the tank, and the weir is provided on the upper surface of the tank to prevent the fertilizer on the upper surface of the tank from flowing down onto the machine body. It was an agricultural work machine.

[0005]

In the agricultural working machine with fertilizer application device of the present invention, when the liquid fertilizer is supplied from the fertilizer supply port provided on the upper surface of the tank, the hand suddenly goes out of hand and the fertilizer falls onto the upper surface of the tank outside the fertilizer supply port. Also, even if the fertilizer is supplied too much and overflows from the fertilizer supply port to the upper surface of the tank, the fertilizer on the upper surface of the tank tries to flow down onto the machine. The fertilizer prevents the fertilizer from flowing down onto the airframe and prevents the fertilizer from corroding the components of the airframe.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding rice transplanter is taken as an example of the agricultural working machine of the present invention, and its embodiment will be described with reference to the drawings. The riding rice transplanter 1 is configured such that a seedling planting machine 4 is attached to the rear side of the traveling vehicle body 2 via an elevating link device 3 that moves up and down. Further, the tanks 50, 50 of the fertilizer application device 5 are arranged on the left and right sides of the rear side of the traveling vehicle body 2, and the preliminary seedling mounts 6, 6 are arranged on the left and right sides of the front side of the traveling vehicle body 2.

In the traveling vehicle body 2, a mission case 8 is fixed to the front ends of the frames 7 and 7 and front wheels are attached to the front wheel axles 9a and 9a of the front wheel transmission frame fixed to the left and right of the mission case 8. The rear wheels 10 and 10 are attached to the rear wheel axles 10a and 10a of the rear wheel gear case provided on the left and right sides of the rear side of the frame 7. The front wheels 9, 9 are wheels that rotate left and right in conjunction with the turning operation of the handle 11 to change the course of the machine body. Further, the front wheels 9 and 9 and the rear wheels 10 and 10 are both driven by the transmission case 8 to rotate. As for the power input into the mission case 8, the motive power of the engine 12 supported on the frames 7 and 7 is transmitted to the hydraulic pump fixed on the mission case 8 by the first belt transmission device 13, From there, the transmission of the second belt transmission 14 of continuously variable transmission is used.
It is transmitted to the input shaft of the steering wheel 8 so as to be able to perform a high speed / low speed stepless speed change operation. Further, the transmission to the seedling planting machine 4 and the fertilizer application device 5 is transmitted from the right side portion of the mission 8 to the clutch case 15 via the transmission shaft, and the clutch 1 in the clutch case 15 is transmitted.
The power is divided into two via 6 and one is transmitted to the seedling planting machine 4 via the transmission shaft, and the other is transmitted to the pump 51 of the fertilizer application device 5 via the transmission shaft 59.

[0008] Further, the engine 12 is, in a side view, between the front and rear of a pair of left and right front wheels 9, 9 of front wheel axles 9a, 9a and a pair of left and right rear wheels 10, 10 of rear wheel axles 10a, 10a. To position. The engine cover 17 covers the upper side of the engine 12 in the form of a dome, and the engine cover 17
A seat 18 is mounted on the top. A main step 19 is horizontally provided below the periphery (front side and left and right) of the seat 18, and the rear step 20 is arranged so that the upper side of the left and right rear wheels 10 and 10 is passed to the left and right behind the seat 18. It is located higher than 19. The front wheels 9 and 9 are located below the main step 19, and the rear wheels 10 and 10 are located below the rear step 20. The left and right step surfaces 19a, 19a of the main step 19
Extends to the left and right of the front end of the vehicle body to form a passage, and allows entry and exit from the front portion of the vehicle body. On the left and right sides of the main step 19, the main step 19
There are boarding steps 21 and 21 to put your feet on when going up. Further, the lower side of the handle 18 is covered with a front cover 22, and a display panel section for displaying various operating states is provided above the front cover 22, and the main shift lever and the sub shift lever are provided around the display panel section. -, An accelerator lever is provided. A clutch pedal and a rear wheel side clutch / brake pedal are provided on the lower rear side of the front cover 22. On both left and right sides of the engine cover 17, planting / fertilizing clutch and seedling planting machine lifting operation lever 23
A sensitivity adjusting lever 24 for automatically raising and lowering the seedling planting machine is provided so that the operator can operate it while sitting on the seat 18. A spare seedling stand 6 having a seedling stand on which support seedlings are vertically stacked is attached to the support frames fixed to the left and right front wheel transmission frames.

The elevating link device 3 comprises an upper link 32 and a lower link 33, 33 rotatably attached to a link base 31 fixed to the rear side of the frame 7, 7.
A vertical link 34 connects the rear ends of these vertical links. Then, the connecting shaft 40a fixed to the planting transmission frame 40 of the seedling planting machine 4 is rotatably coupled to the bearing portion projecting rearward from the lower end of the vertical link 34, and the seedling planting machine 4 is It is mounted so that it can roll to the left and right with respect to the traveling direction. Further, the lifting link device 3 is provided so as to be lifted and lowered by a hydraulic cylinder 35. Hydraulic cylinder 35
The base side of the cylinder part of the
7 is pivotally supported by a supporting member fixed to 7, and the tip end side of the piston portion is connected to the tip end portion of a swing arm 32a extending downward integrally with the base portion of the upper link 31 via a spring. When the piston portion of the hydraulic cylinder 35 is projected from the cylinder portion, the lifting link device 3 is lifted and the seedling planting machine 4 is lifted. When the piston portion of the hydraulic cylinder 35 is retracted into the cylinder portion, the lifting link device 3 is lowered and the seedling planting machine 4 is lowered. The operation of the hydraulic cylinder 35 is switched by a hydraulic valve.

The seedling planting machine 4 has a six-row planting configuration. The planting transmission frame 40 configured to have an E-shape in plan view is provided as a frame of the seedling planting machine 4 while having a transmission mechanism to each operating portion of the seedling planting machine 4 therein. A seedling mounting table 41 is provided on the planted transmission frame 40 with its front side inclined so as to move left and right by interlocking with a left and right reciprocating mechanism in the planted transmission frame 40. It is like this. Further, the planting device 42 is attached to the planting drive shaft projecting to the rear end side both sides of the planting device transmission frame parts 40b, 40b, 40b extending three behind the planting transmission frame 40. Has been done. Therefore, the seedling placing table 41 reciprocates left and right to sequentially supply the seedlings on the seedling placing table to the seedling take-out port of the seedling receiving frame 44 provided at the lower end of the seedling placing table, and the planting device 42 has a planting tool. 43 ...
Rotates while drawing a predetermined locus and the seedlings supplied to the seedling take-out port are held by the planting claws of the planting tools 43, and the held seedlings are released and planted when they reach the field. ing. Further, a belt type seedling vertical feeding device 45 ... Is provided on the lower side of each row of the seedling placing table 21.
When 1 moves in the left-right direction and the planting device 42 finishes dividing one row of the lower end portion of the seedling, the seedling is transferred so that the lower end portion of the seedling is located on the seedling take-up port.

On the lower side of the seedling planting machine 4, a center float 46 is provided at the center and side floats 47a.
47b are attached so as to be rotatable around their respective left and right lateral axis. Each float 46 / 47a / 47b
At the time of seedling planting work, the soil is grounded on the surface soil surface of the paddy field and slid to adjust the seedling planting position by the planting device 42. Also,
Fertilizer application nozzles 52 of each row of the fertilizer application device 5 are attached to the respective floats 46, 47a, 47b. From the rear end of the fertilizer application nozzle 52, a liquid fertilizer such as a paste or a liquid is discharged into the soil, but the lateral position of the fertilizer is located near the left and right of the seedling planting position of each row. It is provided in.

The fertilizer applicator 5 stores tanks 50, 50 for storing liquid fertilizers in the form of paste or liquid, a pump 51 forcibly feeding the liquid fertilizer, and fertilizer discharged from the pump 51. Fertilizer nozzle 52 of ...
A valve unit 53 for switching to a state of returning to 0, a fertilizing pipe 54 for sending from the valve unit 53 to the fertilizing nozzles 52 of the respective strips, and a fertilizing nozzle 52 for discharging the fertilizer by the tip opening into the soil. Equipped with a tank 50/50
The fertilizer is supplied from the pump 51 to the pump 51 through the supply pipe 55, and the fertilizer is transferred from the pump 51 to the valve unit 53 by connecting pipes 56 ... It has become so.

The tanks 50, 50 are in the shape of a horizontally long box, and the horizontally long support frame 5 connected to the upper end of the link base 31.
7. Tank support frames 58, 58 fixed to both left and right ends of 7.
The tank is mounted so that its longitudinal direction is in the left-right direction. Further, the tanks 50, 50 are arranged such that a part of the tanks 50 and 50 are outside the machine body and the other parts are located on the machine body. In this embodiment, as shown in FIG. 2 or 3, the tanks 50, 50 are provided with the rear wheels 10 ,.
It is arranged in a state of protruding to the left and right outside from 10.
Further, these tanks 50, 50 are arranged on the left and right sides of the member that determines the maximum left and right width of the machine body, and are arranged higher than the rear step 20. Fertilizer supply port 50 for supplying fertilizer to the inside of the tank 50
a. 50a is opened, and the fertilizer supply port is closed by lids 50b, 50b. The fertilizer supply ports 50a and 50a are
The tanks 50 and 50 are arranged so as to be biased toward the outside of the fuselage. Therefore, when replenishing fertilizer, even if it spills, it is hard to drop it on the aircraft. In this embodiment, the fertilizer supply port 50
Although the mouth shape of a.50a is circular, the shape is not limited thereto.

Further, the tanks 50, 50 have a dam portion 50c for stopping the fertilizer on the upper surface thereof from flowing down onto the machine body.
-50c is provided on the upper surface of the tank. This weir 50
c and 50c are provided on the side of the body around the fertilizer supply ports 50a and 50a, that is, the left and right inner halves are provided in an arc shape, and are integrally formed on the upper surface of the tank. This dam 5
The positions of the front and rear ends 50d, 50d of 0c, 50c, ...
It is provided so as to be located on the left and right outside of the position of the outermost vehicle body constituent member (the rear wheels 10 and 10 in this embodiment) located below the tanks 50 and 50. Therefore, when the liquid fertilizer is replenished from the fertilizer replenishing ports 50a and 50a, the hand suddenly goes out of order and the fertilizer falls on the upper surface of the tanks 50 and 50 outside the fertilizer replenishing port, or the fertilizer replenishing port is oversupplied. Even if the tanks 50 / 50a overflow from the tanks 50 / 50a, the weirs 50c / 50c provided on the tank upper surface prevent the fertilizer on the tank upper surface from falling onto the machine body. The fertilizer is prevented from flowing down on the machine body, and the blocked fertilizer is guided to the outside of the machine body and flows out of the machine body. Incidentally, the tank 50
The shape of the weirs 50c and 50c provided on the upper surface of the tank 50 is not limited, and for example, as shown in FIG. The outer peripheral walls 50f and 50f may be separately formed from the tank and attached as a weir. Further, since the inclined surfaces 50e and 50e are formed on the upper surfaces of the tanks 50 and 50 so as to be lower toward the outside of the machine body, the fertilizer on the tank upper surface easily flows out of the machine body.

Further, the left and right tanks 50, 50 are communicated with each other by the tank communication pipe portion 55a having a large diameter of the supply pipe 55, and the fluid fertilizer supplied to the left and right one side tank 50 is stored in the other side tank 50. Also, the fertilizer can be easily replenished as it flows. In the supply pipe 55, the pump supply pipe portion 55b is branched from the middle of the communication pipe portion 55a so that the pump 51 is supplied with fertilizer. Further, both ends of the communication pipe 55a and the fertilizer discharge port at the bottom of the tanks 50, 50 are connected by integrally formed connection pipes 64, 64. The connecting pipes 64, 64 form a large diameter pipe connecting portion 64a bent in an L shape and a small diameter fertilizer discharging portion 64b protruding outward from the pipe connecting portion 64a. The discharge port of the fertilizer discharge part 64b on the left side is the cap 6
The fertilizer discharge part 64b on the right side is sealed with 5, and a bellows-shaped bendable discharge pipe 66 is connected to the discharge port of the fertilizer discharge part 64b on the right side, and the discharge port of the discharge pipe 66 is closed by an openable / closable cap 67. The discharge pipe 66 is detachably held by a holder-66a provided outside the tank 50. When it is desired to discharge the fertilizer in the tank 50, the discharge pipe 66 can be removed from the holder 66a and the cap 67 can be removed to easily discharge the fertilizer from the outside of the fuselage, and the fertilizer does not spill onto the fuselage during the discharge.

The pump 51 comprises a sub-tank 51a, each fertilizer discharge part 51b and a gear transmission part 51c for driving it. The fertilizer is supplied to the sub tank 51a by connecting the pump supply pipe portion 55b of the supply pipe 55 to the sub tank fertilizer supply port 51d.
Through the supply pipe 55 from the sub-tank fertilizer supply port 5
Fertilizer is supplied to 1d and is supplied into the sub tank 51a via the drain valve 51e. The drain valve 5
When switching 1e and opening the fertilizer outlet 51f, the tank 50
The fertilizer in 50, the supply pipe 55, and the sub tank 51a can be discharged. A bellows-shaped bendable drain pipe 51g is connected to the fertilizer discharge port 51f,
The fertilizer receiver T is placed on the main step 19 which is located lower than the tanks 50 and 50 and the sub-tank 51a, and the drain port of the drain pipe 51g is taken there and discharged. When not in use, the drain pipe 51g is held in an upright posture by a holder provided inside the left and right sides of the right tank 50. Each fertilizer discharge part 51b has a spiral groove formed on the outer periphery in a rotor pipe 51h, which projects rearward from the rear part of the sub-tank 51a by the same number as the number of fertilizer applied.
The fertilizer in the sub-tank 51a is discharged by driving and rotating the turrets 51i. Rotor-51i
The respective shafts of ... Are driven by gears that mesh with each other in the gear transmission portion 51c.

The transmission of the pump 51 to the gear transmission portion 51c is transmitted from the fertilization drive shaft 15a extending rearward in the clutch case 15 to the transmission shaft 59 whose axial center is directed vertically through the engagement of the bevel gear. The upper end of the transmission shaft 59 is inserted into a bevel case 60 fixed to a bracket fixed to the support frame 57, and the transmission shaft 59 is connected to the upper drive shaft 60a via a bevel gear meshing in the case. Be transmitted to. The upper drive shaft 60a projects from the front side of the case, and a chain 62 is hooked on a sprocket mounted on the projecting shaft and a sprocket of an input shaft 61a of the transmission 61, and is transmitted to the transmission 61. The rotation of the sprocket of the output shaft 61b of the transmission 61 is transmitted to the sprocket of the input shaft 51j of the gear transmission 51c of the pump 51 via the chain 63. The shift operation of the transmission 61 is operated by a shift lever 61c provided on the upper part of the transmission, and the fertilizer discharge amount of the pump 51 is changed to a plurality of stages by this shift operation.

Rotor pipe 5 of each line fertilizer discharge part 51b
The fertilizer projected from 1h is sent to the valve unit 53 through the connecting pipes 56. Valve unit 53
A switching valve 53a ... Is provided for each article, and the fertilization nozzle 52 is passed through the fertilization pipes 54 ...
It is possible to switch between a state in which the fertilizer is allowed to flow through ... And a state in which it is returned to the left side tank 50 through the return pipe 53d. The switching operation is performed by the valve switching lever 53b provided on each of the switching valves 53a. When the valve switching lever 53b is tilted backward and placed in a substantially horizontal position, the fertilizer is discharged from the fertilizer application nozzles 52 ..., and when the valve switching lever 53b is raised upward and placed in a substantially upright position, the fertilizer nozzle is placed. The fertilizer application is stopped to release the fertilizer from 52, and this switching operation can be independently operated by each valve switching lever 53b. The fertilizer that has flowed through the fertilizer application pipes 54 through the switching valves 53a of each row is discharged from the tip end ports of the fertilizer application nozzles 52 connected to the fertilizer application pipes 54. In addition, when the valve switching lever 53b is raised upward to be in a substantially upright posture in order to stop the fertilizer application, the upper end of the operating portion of the lever 53b is
The cover 68, which is provided between the left and right tanks 50 and 50 at approximately the same height as the upper surface of the tank, projects upward from the upper surface of the cover 68. Therefore, the fertilization stopped state can also be confirmed by the lever 53b protruding above the cover 68, and the lever 5 can be changed to the fertilized state.
This is effective in preventing forgetting to return 3b. Further, a plurality of fertilizer pipes 54 (here, 6) are once bundled into left and right halves (here, 3 pipes each) on the front side (back side) of the seedling placing table 41, and are hooked to the left and right. It is locked to H. As a result, the fertilizer application pipes 54 ... Are not caught during the lifting operation of the lifting link device 3 provided in the center of the front and left of the seedling placing table 41, and are arranged on both left and right sides of the lifting link device 3. Planting depth control lever L1
And does not interfere with the operation of the seedling amount control lever L2.

The above-mentioned pump 51 and valve unit 53
Are disposed on the left and right central portions of the rear step 20 on the rear side of the seat 18. Further, as described above, the tanks 50 and 50 are arranged in a state of protruding to the left and right outside of the rear wheels 10 and 10, and the tanks 50 and 50 on the left and right have a "shaped cover 68 in a side view". Pump 51 and valve unit 5
It is provided so as to cover the upper side and the front side of 3. The height of the upper surface of the cover 68 is set to be substantially the same as the height of the upper surface of the left and right tanks 50, 50, and the front and rear width of the upper surface of the cover 68 is the same as the front and rear width of the left and right tanks 50, 50. They are provided with almost the same width. The central portion of the upper surface of the cover 68 is notched from the rear end side to have a concave shape, and the concave portion has a horizontally long box-shaped unit case 53.
The upper part of e is located so as to project slightly above the upper surface of the cover 58.

Reference numeral 70 in the figure denotes a fertilizer clogging lamp, and 71.
Is an alarm buzzer, and a detecting tool for detecting the internal pressure in the connecting pipes 56 ... Immediately before reaching the switching valves 53a is provided in the unit case 53e, and the detecting tool is connected.
When it detects that the internal pressure inside has increased, the
The fertilizer clogging alarm lamp 70 is turned on and the alarm buzzer 71 is sounded by the control device in the unit 72. Further, when the amount of fertilizer in the tanks 50/50 becomes less than or equal to a set amount, fertilizer depletion sensors 73/73 are provided, and when the sensor detects a decrease in fertilizer in the tanks 50/50, it is controlled. -The fertilizer run-out alarm lamp 74 is turned on by the control device in the rule unit 72 and an alarm buzzer-
It sounds like 71. Further, in the unit case 53e, there is provided a switch for detecting that even one of the valve switching levers 53b ... Is raised upward and is placed in a substantially upright posture to detect that the fertilizer application is stopped. Each row fertilization stop display lamp 75 which is lit when the operation is detected is lit. The fertilizer clogging alarm lamp 70 and the fertilizer runout alarm lamp 7
4. The fertilizer application stop display lamp 75 and the buzzer stop switch 76 are provided on the upper surface of the cover 68.

Further, this agricultural working machine with a fertilizer application device has a fertilizer application device 5 including tanks 50, 50, a pump 51, a valve unit 53, a fertilizer pipe 54, and a fertilizer nozzle 52.
In order to attach the seat 51, the pump 51 and the valve unit 53 are mounted on the seat 1 on the left and right central portions of the rear step 20.
8, the fertilizer application nozzles 52 ... Are provided near the ground working position (seedling planting position) of the agricultural working machine (seedling planting machine 4) on the lower rear side of the valve unit 53.
0.50 to the pump 51 and the valve unit 5
3 are arranged on both the left and right outer sides, and are arranged on the rear side of the front wheel axles 9a, 9a and on the front side of the rear wheel axles 10a, 10a in a side view.

As a result, first, the pump 51 and the valve unit 53 can be arranged so as not to hinder the replenishment work (seedling replenishment work) that is consumed by the agricultural work machine (seedling planting machine 4), and the valve unit 53 is at a high position. , The drop from the valve unit 53 to the fertilizer application nozzle 52 becomes large, and the delay in the start of fertilizer discharge from the fertilizer application nozzle 52 when the pump 51 is restarted after the operation is stopped becomes short. The fertilizer-free area can be shortened and uneven growth is reduced.

Further, the pump 51 and the valve unit 53 are centrally arranged in the rear part of the machine body, and the tanks 50, 50 are arranged on both left and right sides thereof, respectively connecting the pump 51, the valve unit 53 and the tank 50, 50. Preparatory operation that can be configured with a short pipe and is performed prior to the start of work (preliminary operation in which the pump 51 is operated in advance until the fertilizer is discharged from the fertilizer application nozzle 52 ...
You can shorten the time.

Even if the fertilizer weight in the tanks 50/50 decreases and the fertilizer weight fluctuates, the front / rear balance of the machine body is unlikely to largely fluctuate.
The capacity can be increased to 0. Furthermore, the left and right tanks 50 and 50
The cover 68 for covering the pump 51 and the valve unit 53 on the rear step 20 between the upper and the lower surfaces of the tanks 50, 50 has a substantially flat upper surface of the cover 68 and a height of the upper surface of the cover 68. Since it was installed at almost the same height as
When seedlings are supplied, the upper surfaces of the tanks 50 and 50 and the cover 68 can be used as a pedestal on which seedlings are once placed immediately before being supplied to the seedling mounting table 41, which facilitates seedling supply work.

Now, the operation of the riding rice transplanter (agricultural working machine) with the fertilizer application device having the above structure will be described below. First, the passenger rice transplanter is run and moved to the work starting point in the paddy field. Then, by operating the planting / fertilization clutch / seedling planter raising / lowering operation lever 23, the seedling planting machine 4 is lowered to the paddy field scene, and a clutch for turning on / off the operations of the seedling planting machine 4 and the fertilizer application device 5 is performed. With the main clutch engaged, the running is started with the seedling planting work and fertilization work being performed at the same time. At this time, the operation of the fertilizer applicator 5 causes the tank 50
The fluid fertilizer in 50 is discharged from the fertilizing nozzle 52 ... into the soil by the operation of the pump 51, and is fertilized.

An empty tank 50, 50 prior to the start of work
The fertilizer in the tank 50/50 decreases when the fluid fertilizer is supplied into the tank or as the work progresses, and the fertilizer is further supplied to the tank 50.
-When replenishing in 50, this agricultural working machine with a fertilizer application has the following actions and effects. That is, in this agricultural working machine with a fertilizer application, the tanks 50, 50 for storing the fluid fertilizer are arranged such that a part of the tank 50 is outside the machine body and the other part is located on the machine body.
Since the fertilizer supply ports 50a and 50a are provided on the upper surface of the tank 50, and the weir portions 50c and 50c that stop the fertilizer on the tank upper surface from flowing down onto the machine body are provided on the tank upper surface, When replenishing fluid fertilizer from the fertilizer replenishing ports 50a and 50a provided on the upper surface of the fertilizer, the hand suddenly goes out of hand and the fertilizer falls onto the tank upper surface outside the fertilizer replenishing port, or the fertilizer replenishing port 50a is excessively replenished.
・ Even if it overflows from 50a to the upper surface of the tank, the weir 50c provided on the upper surface of the tank prevents the fertilizer on the upper surface of the tank 50 ・ 50 from flowing down onto the machine body.
Since 50c stops, the fertilizer is prevented from flowing down on the airframe, and the problem that the fertilizer corrodes the airframe components is prevented.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter with a fertilizer application device.

FIG. 2 is a plan view of a riding rice transplanter with a fertilizer application device.

FIG. 3 is a front view showing the configuration of a fertilizer application device.

FIG. 4 is a sectional side view showing a configuration of a fertilizer application device.

FIG. 5 is a plan view showing the configuration of a fertilizer application device.

FIG. 6 is a rear view showing the configuration of the fertilizer application device.

FIG. 7 is a mechanism diagram showing a configuration of a transmission unit of the fertilizer application device.

FIG. 8 is a circuit diagram showing a fluid circuit configuration of a fertilizer application device.

FIG. 9 is a partial front view showing another configuration of the tank of the fertilizer application device.

FIG. 10 is a partial plan view showing another configuration of the tank of the fertilizer application device.

[Explanation of symbols]

 50: Tank 50a: Fertilizer supply port 50c: Weir

Claims (1)

[Claims] 1. A tank for storing fluid fertilizer is arranged such that a part of the tank is outside the machine body and the other part is located on the machine body, and a fertilizer replenishing port is provided on the upper surface of the tank. An agricultural working machine with a fertilizer application, wherein a weir part for stopping the fertilizer on the upper surface from flowing down onto the machine body is provided on the upper surface of the tank.