JP2002211257A - Fuel tank for spray working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To equip a spray working machine with a large-capacity fuel tank and arrange the fuel tank without hindering traveling of a machine body. SOLUTION: The spray working machine has a traveling machine body 22 mounted with a chemical tank 24, nozzles 23, 23, etc., and a spray pump 4 for forcibly feeding chemicals. The left side lower portion of the chemical tank 24 is formed to be cut out, where the fuel tank 48 is arranged. A fuel filler port 48a of the fuel tank 48 is located on the left side from a driver's seat 14 formed at the front center of the chemical tank 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the structure of a chemical tank and a fuel tank in a spraying machine.

[0002]

2. Description of the Related Art Conventionally, a chemical solution tank is mounted on a riding type traveling machine, a chemical solution is filled in the chemical solution tank, and the chemical solution in the chemical solution tank is pressure-fed to a nozzle provided on a boom by a spray pump. A spraying machine for spraying is known. Many of them are configured such that an operator controls a device and a body related to spray driving in a cockpit, and operates a steering handle to spray a chemical solution while traveling and moving in a field where crops such as rice are cultivated. ing. The fuel tank provided in the spraying machine has been disposed in the hood, on the lower side of the body frame, or below the driver's seat.

[0003]

However, if the fuel tank is disposed in the bonnet, the bonnet becomes large, the front and rear lengths become long, and the visibility of the operator who operates the aircraft deteriorates. If it is installed on the lower side of the body frame, the spraying machine will run in the field where tall rice is growing, so the upper edge of the rice leaf will contact the lower surface of the fuel tank and damage the rice and fuel tank. There was sometimes. Further, when the fuel tank is provided below the driver's seat, the driver's seat must be turned forward, flipped up, or removed to replenish the fuel, making it difficult to refuel. It was troublesome.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in a spraying machine in which a traveling machine is equipped with a chemical tank, a nozzle, a spray pump for pressure-feeding a chemical, and the like, a fuel tank is disposed on a side of the chemical tank.

According to a second aspect of the present invention, the fuel supply port of the fuel tank protrudes from the side of the chemical tank.

According to a third aspect of the present invention, a space is formed by cutting a lower portion of a side of the chemical solution tank, and a fuel tank is disposed in the space.

According to a fourth aspect of the present invention, the fuel tank is disposed above the body frame.

[0009]

Next, an embodiment of the present invention will be described. 1 is an overall side view of the spraying machine according to the present embodiment, FIG. 2 is an overall plan view thereof, and FIG. 3 is a side view of a front axle case. FIG. 4 is a plan view in which a storage container and a hand-spraying hose reel are attached to the rear of the machine, and FIG. 5 is a side view of the same. 6 is a front view showing a connecting portion between the front boom and the side boom, FIG. 7 is a schematic front view thereof, FIG. 8 is a view taken along the line XX in FIG. 7, and FIG. 9 is a plan view showing opening and closing of the side boom. is there. FIG. 10 is a developed view of the power transmission of the spraying machine. FIG. 11 is a front view of the chemical liquid tank according to the present invention, FIG. 12 is a plan view thereof, and FIG. 13 is a left side view thereof. 14 is a plan view of a chemical tank containing a water-absorbing hose, FIG. 15 is a left-side sectional view showing the inside of the chemical tank, FIG. 16 is a perspective view showing a partition plate, FIG. 17 is a rear view of the chemical tank, and FIG. FIG. 19 is a rear cross-sectional view of the tank in the vicinity of the water suction port. And FIG.
FIG. 4 is a diagram showing a flow of a chemical solution.

As shown in FIGS. 1 and 2, the spraying machine is a riding type traveling machine body 22, a boom 40 having a plurality of nozzles 23 for spraying a chemical solution, and a lifting and lowering of the boom 40. Scattering unit 35 composed of a mechanism for performing deployment
And the spray pump 4 for pumping the chemical solution in the chemical solution tank 24 to the nozzles 23 with the power from the engine 9 and the spray amount control device 3 related to control of the chemical solution discharged from the spray pump 4. And a pump section 36.
In the present embodiment, the spraying unit 35 is disposed at the front and side of the traveling body 22, and the pump unit 36 is disposed at the rear. A pair of right and left body frames 6L and 6R extend horizontally in parallel from the front end of the traveling body 22 toward the rear of the body. Front wheels 7.7 are supported below the front portions of the body frames 6L and 6R, and rear wheels 8.8 are supported below the rear portions.

A hood 10 covering the engine 9 is provided on the body frames 6L and 6R in front of the traveling body 22.
Are arranged. Inside the hood 10, a fuse box 45 is disposed on the right rear side of the engine 9, and a relay box 46 is also disposed on the left rear side.

By disposing a relay box 46 which is not normally disposed in the bonnet 10 in the bonnet 10,
Since water such as rain does not splash on the relay box 46, the durability of the relay box 46 is not impaired. Further, the hood 10 is openable and closable, and when the hood 10 is opened, the relay box 46 is arranged at a position where it is easy to see.
Maintenance is easy. Also, as in the case of the fuse box 45, the fuse box 45 is arranged at a position where the fuse box 45 is easy to see when the hood 10 is opened, similarly to the relay box 46, so that the maintainability and the waterproofness are improved.

Both the relay box 46 and the fuse box 45 are apt to receive heat, and therefore, it is desirable to arrange them apart from each other. Are not interfering with each other. further,
A radiator 9a is arranged at the rear of the engine 9, and a relay box 46 and a fuse box 45 are arranged on the side where the cooling air is sucked by driving the cooling fan. Therefore, these temperature rises can be suppressed, and the durability is improved.

A battery 47 is disposed on the right side of the hood 10 and above the body frame 6R. Accordingly, the front and rear length of the bonnet 10 is shorter than in the case where the battery 47 and the engine 9 are arranged in parallel in the bonnet 10, and the visibility of the operator who steers the traveling body 22 while sitting in the driver's seat 14 is improved. . Further, since the battery 47 is outside the hood 10, the state of the battery 47 can be easily checked and maintenance can be performed without removing the hood 10.

Further, the battery 47 is connected to the traveling body 22.
Since the fuel tank 48, which will be described later, is disposed on one side of the left and right sides (in this embodiment, on the right side in the traveling direction) and the other side of the traveling body 22 (also on the left side), the batteries 4 which are both heavy
Since the fuel tank 7 and the fuel tank 48 are arranged on the left and right opposite sides, the balance between the left and right of the traveling body 22 is improved, and the traveling stability is improved. Although the battery 47 is provided outside the hood 10, it is located above the body frame 6R and
Since it is arranged on the front axle case 92F, it is protected by the body frame 6 so that it does not come into contact with rice or the like during traveling and the battery 47 is not damaged.

A lubricating oil is loaded in the front axle case 92F so that the axle is horizontally mounted and the shafts and gears in the case are smoothly rotated to prevent rust. An oil drain port 49 is opened so as to protrude downward from the front axle case 92F, and the oil drain port 49 is plugged with a bolt 50.
However, as described above, the front axle case 92F comes into contact with the grown rice or the like or comes into contact with the soil or stones while traveling in the soil, so that the head of the bolt 50 becomes worn and cannot be removed. The bolt 50 was loosened.

Therefore, as shown in FIG. 3, a rib 49a is formed so as to protrude downward around the oil drain port 49, and the head of the bolt 50 is protected by the rib 49a.
Therefore, abrasion and deformation of the bolt 50 can be prevented, and when the bolt 50 is removed to discharge the lubricating oil, the bolt 50 can be removed in an appropriate state.
This improves the durability of the tire. In the rear axle case 92R, the front axle case 92F
Similarly, the bolt 50 for plugging the oil drain port 49 is protected.

An operation panel 11 is provided on a cover behind the bonnet 10, and an operation handle 12 is provided above the operation panel 11. The operation panel 11 and the operation handle 12 are used to operate the spraying machine. The unit 5 is constituted. A step 13 is provided on the body frames 6L and 6R from the lower side of the operation panel 11 toward the rear. A chemical solution tank 24 is disposed on the rear part of the body frames 6L and 6R. A driver's seat 14 is formed at the front center of the chemical solution tank 24, and the chemical solution tank 24 surrounds the side and rear. It is placed so that it is. The body frames 6L and 6R and the subframes 52L and 52R, which are the respective components of the frame of the spraying machine, are made of hollow square or round pipes or L-shaped or H-shaped steel materials, and are lightweight and high-profile. It is configured to be rigid.

The pump section 36 is provided with the body frames 6L and 6L.
Subframes 52L and 52 extending rearward from the rear end of R
R, and drives the spray pump 4 by the power from the engine 9 to discharge the chemical solution in the chemical solution tank 24 into the boom 4.
The nozzles 23, 23,...

The sub-frames 52L and 52R
As shown in FIGS. 4 and 5, a storage container 51, a hose reel 57 for hand spraying, and the like can be attached to the. The storage container 51 or the hose reel 57 for hand spraying is attached to the rearmost portions of the left and right subframes 52L and 52R. The storage container 51 and the hand-spraying hose reel 57 each have an arm 5 composed of a hollow round pipe formed in an inverted L shape in a side view.
8.58. Then, the subframes 52L and 52R formed of hollow pipes having a square cross section are sandwiched together with the arms 58 and 58 from the left and right by fixtures 59 and 59, and the storage container 51 is placed on the subframes 52L and 52R. Can be fixed to the subframes 52L and 52R.

By forming the storage container 51 or the hand-spraying hose reel 57 detachably as described above, special processing is not required for the subframes 52L and 52R, so that the subframes 52L and 52R can be added at low cost. Since these mounting positions can be determined relatively freely on the sub-frames 52L and 52R, positions that are easy for the operator to use can be set. In particular, since the hand-spraying hose reel 57 is installed at the rearmost part of the traveling machine body 22, the operation of the sprinkling unit 35 can be easily performed while performing the hand-spraying operation.

Next, the spraying unit 35 will be described. The spraying unit 35 includes a boom 40 for spraying a chemical solution, and a lifting link mechanism 37. The boom 40 is the traveling body 22
Of the front boom 41, and left and right side booms 42L and 42R pivotally supported at both ends of the front boom 41 and extend sideways so as to be foldable. The boom 40 has a plurality of nozzles 23 for spraying a chemical solution.
23 are arranged at regular intervals.

The elevating link mechanism 37 connects the front boom 41 and the front portions of the body frames 6L and 6R by parallel links, and one of the parallel links is connected to the body frames 6L and 6R.
R, the cylinders 38 are interposed, and the cylinder 3
The boom 40 can be moved up and down by expanding and contracting the 8.38. The left and right centers of the front boom 41 are pivotally supported by the elevating link mechanism 37 and supported so as to be tiltable left and right. A horizontal control cylinder 39 is interposed between the front boom 41 and the elevating link mechanism 37 to provide a boom. 40 is configured to perform horizontal control.

The front boom 41 and the side boom 4
Between the 2L and 42R, cylinders 43 and 43 are interposed respectively, and by expanding and contracting the cylinders 43 and 43, a working position where the side booms 42L and 42R are horizontally extended in the left and right directions, and a front and rear direction. It is rotatable to a storage position that is positioned rearward.

In the storage position, the side booms 42L, 42R are placed on the boom receivers 60, 60 projecting to the left and right sides from the body frames 6L, 6R, and the synthetic resin bands 61
61 tightens and fixes the side booms 42L and 42R so that the side booms 42L and 42R can be held. The synthetic resin bands 61 are not limited to the material as long as they are string-shaped. However, it is preferable that the synthetic resin bands 61 have excellent chemical resistance, such as nylon. When the side booms 42L and 42R are in the storage position, the side booms 42L and 42R are held rearwardly upward with a distance from the body by the boom receivers 60 and 60. The traveling body 22 has sufficient space for getting on and off the vehicle.
The L · 42R does not interfere with getting on and off the aircraft.

The connection between the front boom 41 and the side booms 42L and 42R will now be described in detail with reference to FIGS.

As shown in FIGS. 2 and 6, at the connection portion of the boom 40, the chemical solution pumped from the chemical solution tank 24 is
The delivery hoses 62, 62, 62 flow into the spraying pipe 64 via the filters 63, 63, 63 provided at the connecting portions, and the nozzles 23 provided on the spraying pipe 64 as appropriate.
-Sprayed from 23 ... The spray pipe 64 is provided on each of the left and right booms 42L and 42R and the front boom 41, and is fixed to the boom 40 by a fixing member. One end of each spray pipe 64 is a closed pipe, and the other end is a chemical liquid inlet. Filters 63, 63, 63 are provided at the respective inlets.
Is provided.

As described above, by providing the fine filters 63, 63, 63 for the individual spray pipes 64, the chemical solution is filtered immediately before the nozzles 23, 23,. It is possible to prevent clogging of the spray plate provided in the apparatus. Further, even if a work abnormality occurs due to clogging, a large number of nozzles 23
23: Three filters 63, 63, 6 provided on the fuselage without checking and removing clogging of individual jet plates
It is sufficient to remove the clogging of No. 3 and the maintainability is improved. The filters 63, 63, 63 are provided between the delivery hoses 62, 62 and the spray pipe 64, are compact, and have the nozzles 23, 63.
23... Does not interfere with the spraying of the chemical solution to be sprayed because it is provided at a position that does not cover the chemical solution sprayed from 23.

In the connecting portion of the boom 40, between the front boom 41 and the side booms 42L and 42R,
Each of the cylinders 43 is interposed, and the cylinder 4
The side booms 42L and 42R are opened and closed by the expansion and contraction of 3.43. The structure of the left and right side booms 42L and 42R is symmetrical with respect to the fuselage.
Front boom 41 and side booms 42L and 42 using 2L
The structure of the connecting portion of R and the mechanism of opening and closing will be described.

As shown in FIGS. 6 and 7, at the connecting portion, the end of the front boom 41 is sandwiched by a connecting member 70 fixed to the side boom 42L, and the pivot shaft 71 penetrates in the vertical direction. I have. Therefore, the side boom 42L is rotatably connected to the front boom 41 whose position is fixed around the pivot shaft 71.

That is, as shown in FIGS. 7 and 8, the connecting member 70 fixed to the side boom 42L has a U-shaped support portion 70a that sandwiches the front boom 41 in a side view.
And a boom support portion 70b having a U-shaped cross section which is fixed to the support portion 70a. A bracket 70 for supporting the tip of a piston rod 43a that expands and contracts by the operation of the cylinder 43 is provided on the side of the boom support 70b.
c is fixed. Since the connecting member 70 is pushed and pulled by the piston rod 43a of the cylinder 43 and supports the load of the side boom 42L, the connecting member 70 is made of a strong material such as iron. I am able to resist.

At the fixed portion between the connecting member 70 and the side boom 42L, the connecting member 70
The boom support 70b, the side boom 42L, and the insert member 72 are screwed in this order. Insert member 7
Reference numeral 2 is made of a strong material such as iron similarly to the connecting member 70, and reinforces the fixing portion between the side boom 42L, which is a hollow square pipe, and the connecting member 70. The stress related to the fixing between the side boom 42L and the connecting member 70 is reduced by the insertion member 72.
Therefore, even if the side boom 42L is made of a lightweight material such as aluminum and is hollow, the side boom 42L can maintain sufficient strength without being deformed. Further, loosening of a bolt fixing the side boom 42L and the connecting member 70 and wear of a bolt hole penetrating the bolt are prevented.

The side boom 42L is configured so that the fixed position with respect to the connecting member 70 can be adjusted by a small amount up and down. Of the four bolt holes provided on the side surface of the boom support portion 70b of the connecting member 70, two bolt holes 70d, 70d close to the front boom 41 are elongated holes vertically arranged in a vertical direction, Therefore, the remaining two bolt holes 70e
・ Side boom 42L with bolt inserted into 70e as axis
Can be turned up and down by a small amount with respect to the connecting member 70. A vertical adjusting bolt 73 penetrates into the upper surface of the boom support portion 70b of the connecting member 70, and a contact member provided on the upper end of the side boom 42L on the side of the front boom 41 on which the insert member 72 is provided. The lower end of the vertical adjustment bolt 73 is in contact with 74.

First, the vertical adjusting bolt 73 is turned to fix it at an appropriate position, and then the side boom 42L is pushed upward to connect the contact member 74 to the connecting member at the position where the vertical adjusting bolt 73 contacts. Bolt holes 70d and 70d provided on the side surfaces of the boom support 70b and the side booms 42L and 42
When a bolt is inserted into R and fastened, the upward rotation of the side end of the side boom 42L at the center of the fuselage is restricted by the vertical adjustment bolt 73. The side boom 42L is much lighter on the front boom 41 side with respect to the bolt whose position is fixed,
Since the side end of the side boom 42L at the center of the body does not naturally rotate downward, the side boom 42L is fixed.

As described above, the side boom 42L opens and closes (rotates) with respect to the front boom 41, but the side boom 42L
The opening of the side boom 42L is controlled in order to prevent the piston rod 43a of the cylinder 43, which is an actuator for driving the opening and closing, from being overextended.

As shown in FIG. 6 and FIG.
A pin 70f is provided on the upper part of the
Is protruding. The pin 70f is in contact with a sensor plate 75a of a limit switch 75 provided on the front boom 41. Therefore, when the side boom 42L rotates to the opening side, the pin 70f presses the sensor plate 75a to rotate the sensor plate 75a. In this manner, when the side boom 42L continues to rotate forward and the sensor plate 75a rotates by a predetermined angle or more, the limit switch 75 operates to detect an abnormality in the opening of the side boom 42L. Thus, excessive extension of the cylinder 43 is prevented.

Further, stoppers 94 are provided on the front and rear of the front boom 41, respectively. The stopper 94.9
Numeral 4 is located slightly outside the both ends of the opening / closing stroke of the side boom 42L, and the support 70a of the connecting member 70 is provided with stoppers 94.9 to prevent the side boom 42L from rotating excessively.
The rotation of the side boom 42 </ b> L is regulated by abutting on the side boom 42 </ b> L.

Here, the power transmission configuration of the spraying machine according to the present embodiment will be described.

As shown in FIG. 10, which is a developed view of power transmission,
The output shaft 15 of the engine 9 extends rearward from the engine 9 disposed at the front of the traveling body 22, and the engine 9
The output shaft 15 is connected between the transmission shaft 16 and the shaft by a universal joint, and further connected to a rear CVT input shaft 27.

The CV disposed substantially below the center of the traveling body 22
The T case 20 houses a CVT (split pulley type continuously variable transmission) 21. The rear end of the CVT input shaft 27 extends from outside the fuselage at the rear end of the CVT case 20, and the CVT output shaft 29 extends from the other end. The C
The power transmitted to the VT input shaft 27 is continuously variable by the CVT 21 and transmitted to the CVT output shaft 29.

A double pulley 17 is fixedly provided at the rear end of the CVT input shaft 27, and a double pulley 28 is provided below the double pulley 17, and the double pulley 28 extends rearward. On the second PTO shaft 68. Double pulley 1
Between belts 7 and 28, a belt 69 is wound.
9 enables the driving force to be transmitted from the CVT input shaft 27 to the second PTO shaft 68. A second PTO output shaft 83 is connected to the rear end of the second PTO shaft 68. The rotation of the second PTO output shaft 83 is adjusted by gears or the like and transmitted to the crankcase 26 of the spray pump 4. Power is transmitted via 19.

Among the double pulleys 17 and 28 for transmitting the driving force to the second PTO shaft 68, the front double pulley 17 is provided with a rotation sensor 98. Second PTO shaft 68
Since the power of substantially constant rotation proportional to the output rotation of the engine 9 can be obtained, the rotation of the double pulley 17 is sensed, that is, the rotation of the engine 9 is detected. Since the rotation sensor 98 does not sense the rotation of the output shaft 15 itself from the engine 9, errors due to vibration of the engine 9 are less likely to occur, and the durability of the rotation sensor 98 is improved by avoiding vibration. In addition, since a variable speed such as a belt is not interposed between the engine 9 and the double pulley 17, it is possible to perform highly accurate sensing. Further, since the rotation sensor 98 is not disposed at a relatively limited position near the engine 9, the layout of the drive transmission system is simplified.

The clutch 8 is located behind the CVT case 20.
4 is provided. The CVT output shaft 29 is inserted into a clutch case 76, and an input shaft 85 is disposed coaxially with the CVT output shaft 29. Then, the CVT output shaft 29 and the input shaft 8
5 is configured so that the transmission of the driving force can be connected and disconnected by the clutch 84. A transmission case 86 is disposed behind the clutch 84, and a rear portion of the input shaft 85 is inserted into the transmission case 86.

In the transmission case 86, the power of the input shaft 85 protruding from the clutch case 76 is transmitted to the traveling drive shaft 82 via a plurality of gears. And
The traveling drive shaft 82 is connected to a front wheel drive shaft 87 and a rear wheel drive shaft 89 that project forward and backward of a transmission case 86 to transmit power. Accordingly, the rotational force after the continuously variable transmission by the CVT 21 is transmitted to the front wheel drive shaft 87 and the rear wheel drive shaft 89, and the front wheels 7.7 and the rear wheels 8.8 are driven to rotate. Further, the first PTO shaft 81 extends rearward from the transmission case 86, and the first PTO shaft 81
The driving force is transmitted from the input shaft 85 via a PTO transmission mechanism 88 composed of gears and the like provided in a transmission case 86.

Next, the structure of the chemical tank 24 according to the present invention will be described with reference to FIGS.

As shown in FIGS. 11 to 13, the chemical solution tank 24 is an integrally molded container having a hollow inside, and a driver's seat 14 is provided at the front center of the chemical solution tank 24, and the left and right sides of the driver's seat 14. Partition walls 44L and 44R serving as partition plates are arranged on the outside, and handles 31L and 31R are further arranged outside. A pillar support 32 is provided behind the handles 31L and 31R to fix a pillar for erecting the cabin.
L · 32R is provided.

The driver's seat 14 is configured such that the front center of the chemical solution tank 24 is notched in a concave shape and a seat is placed thereon.
The sheet is detachable and can be removed when cleaning the chemical solution tank 24. Below the driver's seat 14 of the chemical liquid tank 24, as shown in FIG. 15, a hole 33 that vertically penetrates the chemical liquid tank 24 is integrally formed, and the side surface of the hole 33 serves as a pillar. Thus, even if an operator's load is applied to the driver's seat 14 provided on the chemical liquid tank 24 made of a resin material, the driver's seat 14 is reinforced so as not to bend downward and has increased rigidity.

On both left and right sides of the driver's seat 14, partitions 44L and 44R formed integrally with the chemical liquid tank 24 are provided. The partition walls 44L and 44R prevent the chemical solution from flowing to the driver's seat 14 side and prevent the sprayed chemical solution from being sprayed.
8 are isolated.

On the outside of the partition walls 44L and 44R, handles 31L and 31R are formed integrally with the chemical liquid tank 24. That is, the handles 31L and 31R are integrally formed with the chemical liquid tank 24 on the left and right outer sides of the front upper part of the chemical liquid tank 24.
Is provided. A plurality of grooves are formed in the handles 31L, 31R provided in the front-rear direction in the left-right direction so that the grips 31L, 31R are not slippery when gripped. By integrating the chemical solution tank 24 and the handles 31L and 31R, the structure is simplified, and a fixing member such as a bolt which is easily corroded by the chemical solution is not required, which contributes to cost reduction.

The operator grips the grips 31L and 31R configured as described above, puts his feet on the steps 56 provided on both the left and right sides of the machine, and gets on and off the step 13. Since this work machine is configured to have a high vehicle height due to the nature of the work of performing the control work while traveling on the field across the rice, it is difficult for the operator to get on and off the vehicle. Handles 31L and 31 near the driver's seat 14 in the upper front of the chemical solution tank 24, which is easy to handle when getting on and off the vehicle, and which can be reached while sitting on the driver's seat 14.
It is preferable to provide R.

The driver's seat 1 provided in the chemical solution tank 24
A fuel tank 48 is disposed on the left side of the fuel tank 4. That is,
A storage space is formed by notching the lower left lower part of the chemical liquid tank 24 in a concave shape, and a fuel tank 48 is disposed in this space.
Therefore, the fuel tank 48 is disposed above the body frame 6L, so that the fuel tank 48 does not come into contact with the crop even when traveling on a field where crops such as rice grown tall are planted. Or the fuel tank 48 can be prevented from being worn by crop contact.

The fuel tank 48 includes a body frame 6L.
Is fixed to the body frame 6L via a bracket (not shown) fixed to the body frame 6L. Since a part of the space occupied by the chemical solution tank 24 is used for disposing the fuel tank 48, a larger space can be secured as compared with the conventional case where the fuel tank 48 is mounted below the body frame 6L. Since the load of the fuel tank 48 is applied from above the body frame 6L, the heavy fuel tank 48 can be favorably supported, and a large-capacity fuel tank 48 can be provided. Therefore, since the continuous operation time can be sufficiently secured, the operation can be completed without refueling even in a large operation area.

The fuel supply port 48a of the fuel tank 48 arranged as described above protrudes upward from the front side surface on the step side, that is, at the lower front part of the partition walls 44L and 44R provided on the left side of the driver's seat 14. The fuel tank is positioned so as to protrude forward and upward from the chemical liquid tank. When replenishing the fuel, the replenishment tank can be placed on the step and can be easily performed. Further, there is no need to perform an operation of tilting the driver's seat 14 forward as in the related art, and when replenishing using the siphon pump, when the inside of the replenishing tank approaches empty,
The replenishment tank can be placed on the driver's seat 14 and easily supplied to the end. In addition, on the left side of the chemical solution tank 24,
A detachable cover 24b is attached to protect the side surface of the fuel tank 48 and improve the appearance of the chemical liquid tank 24. Alternatively, the fuel tank 48 is configured such that the fuel tank 48 is not exposed to the side as a notch hidden by the medicine tank 24.

A chemical liquid inlet 30a is opened on the upper surface of the chemical liquid tank 24 and behind the driver's seat 14, and an openable / closable lid 30 is disposed at the chemical liquid inlet 30a. The chemical liquid tank 24 is configured so that a person can work on the upper surface, and the lid 30 and the chemical liquid tank 24 main body have strength enough to withstand the load of a human, and the upper surface of the lid 30 is made of a material having a non-slip effect. Step 53, which is covered and has an anti-slip groove on the upper surface of the chemical liquid tank 24, which is one step lower than the other parts.
53 is provided so that a scaffold at the time of work can be secured.

A groove 54 is formed between the steps 53 and the lid 30. The chemical liquid leaked from the chemical liquid inlet 30a when the chemical liquid is injected into the chemical liquid tank 24 flows along the groove 54 to the rear of the chemical liquid tank 24. Further, as shown in FIG. 14, a groove is formed around the lid 30 to wind and house the water-absorbing hose 55. At this time, if a holder 55a for fixing the water absorbing hose 55 is provided in the chemical liquid tank 24, the long water absorbing hose 55 can be stored in a compact and calm state.

The water-absorbing hose 55 is for sucking water from irrigation water or the like during car washing and delivering the water to the spray pump 4. It is also possible to load the tap water into the chemical tank 24 and send water to the spray pump 4 to perform the car washing operation. However, it is economical to pump irrigation water or the like into the chemical tank 24 using the water absorption hose 55 and use it. . Further, since the water absorption hose 55 is connected to the chemical solution tank 24 as described above, it is convenient to store the water absorption hose 55 near the chemical solution tank 24.

Further, as shown in FIG. 14, a recess 66 may be integrally formed on the upper surface of the chemical solution tank 24 to provide a holder 66 such as a chemical solution bottle. By providing the holder 66 on the upper surface of the chemical solution tank 24, the operator seat 14 can be used when an operator adds a chemical solution or stores excess chemical solution.
The liquid bottle is confirmed in a state of being seated on the vehicle, and handling is easy, and since the holder 66 is formed in a concave shape, the traveling body 2
Even if 2 runs, the medicine bottle does not fall. In addition, since the chemical liquid tank 24 is formed integrally with the chemical liquid tank 24, the chemical liquid tank 24 can be easily cleaned, and the cost can be reduced as compared with the case where the chemical liquid tank 24 is separately provided.

Since the interior of the chemical solution tank 24 is hollow, if the machine body tilts due to running and turning or running on irregularities, the level of the chemical solution in the chemical solution tank 24 also changes greatly. The balance of the aircraft is lost. Therefore, as shown in FIGS. 12 and 15, a partition plate 67 is erected in the chemical solution tank 24 in the front-rear direction to reduce the movement of the chemical solution in the chemical solution tank 24, and to sharply move when the body is tilted or vibrated. Liquid level change and liquid movement are suppressed, and movement of the center of gravity of the aircraft is suppressed to maintain running stability.

The partition plate 67 is, as shown in FIG.
It is configured by combining two plates 65 having the same shape. The plates 65, 65 are made of a resin material or the like, are bent up and down, are made of a plate-shaped member having a U-shape in cross section, and have two plates 65 A notch 65a is provided at a position where the tip of the pin 70f overlaps, and a hole 65b.
65b is drilled.

The above-mentioned plates 65, 65
The upper and lower plates 4 and 5 are configured so that they can be inserted into the chemical solution tank 24 from the chemical solution injection port 30a, and can be assembled by engaging two plates 65 in the chemical solution tank 24. At this time, a pin 65c vertically penetrating the two plates 65, 65 constituting the partition plate 67
The central part is connected and fixed by 65c. The front and rear of the partition plate 67 are fixed by holding the left and right sides of the partition plate 67 by brackets 97a and 97b, which are integrally formed on the wall inside the chemical liquid tank 24, in a plan view. Preventing. The partition plate 67 is prevented from rising upward by the filter 30b inserted from the chemical solution inlet 30a, and the partition plate 67 is fixed in position in the chemical solution tank 24.

Since the partition plate 67 constructed as described above is composed of two members, it is compact enough to be easily inserted from the chemical liquid inlet 30a and can be easily disassembled. It is convenient when cleaning 24. Further, the partition plate 67 has a simple configuration and is inexpensive because no separate fixing member is used for fixing it in the chemical liquid tank 24. In addition, since the front and rear parts are the same, they can be manufactured inexpensively and easily.

The inside of the chemical liquid tank 24 is inclined so that the bottom of the chemical liquid tank 24 is slightly rearwardly lowered toward the water intake port 24a arranged at the lower rear portion, so that the chemical liquid in the chemical liquid tank 24 is left. It makes maximum use for spraying without any problems. However, when the remaining amount of the chemical solution in the chemical solution tank 24 becomes small, the chemical solution flows from all directions toward the water intake port 24a located at a lower position than other parts of the chemical solution tank 24, and a vortex is generated. If a vortex occurs, the water intake 24
Air mixes with the chemical solution sent from a to the spray pump 4, and abnormal vibration occurs when compressing the chemical solution mixed with air by the spray pump 4, leading to failure of the spray pump 4.

Therefore, when the amount of the chemical remaining in the chemical tank 24 is reduced, the vortex flow toward the water inlet 24a is changed so as to be a forward / backward (or lateral) flow of the chemical. The generation is delayed so that the chemical solution in the chemical solution tank 24 can be used without being left behind. That is, the bottom surface of the chemical liquid tank 24 near the water inlet 24a is shown in FIGS.
As shown in FIG. 9, convex portions 99.9999 extending in the front-back direction
a is integrally formed, and the convex portions 99, 99, 99a rectify the chemical liquid flowing into the vicinity of the water suction port 24a so that the chemical liquid flows in the front-rear direction toward the water suction port 24a.

As shown in FIG. 20, the chemical liquid flowing out of the water suction port 24a of the chemical liquid tank 24 and supplied to the pump section 36 flows out of the water suction port 24a, passes through a valve 77, is filtered by a strainer 78, and is sprayed. It is sent to the pump 4. The spray pump 4 is provided with a safety valve 79.
Spilled water flows back to the chemical tank 24. Then, the chemical solution sent from the spray pump 4 is supplied to the flow control valve 90.9.
The flow rate is adjusted by the spray amount control device 3 provided with 1 and a part thereof is returned to the chemical solution tank 24, and the chemical solution having a pressure equal to or less than the set pressure is sent to the delivery pipe 80 arranged in front of the machine body through the communication hose 93. Can be As shown in FIG. 19, the chemical solution that has returned to the chemical solution tank 24 on the way is returned to its return port 24d.
4d... Are provided at the lower rear portion of the chemical solution tank 24 to stir the chemical solution by using a water flow at the time of reflux to the chemical solution tank 24 so as to keep the concentration of the chemical solution constant and prevent precipitation. .

From the delivery pipe 80, the air is branched and sent to delivery hoses 62, 62, 62 provided on the front boom 41 and the left and right side booms 42L, 42R, respectively. Delivery tube 8
A stop cock 62a, 62a, 62a is provided between 0 and each delivery hose 62, 62, 62 so that the presence or absence of spraying of a chemical solution can be controlled for each of the booms 41, 42L, 42R. And the delivery hoses 62, 62, 6
The chemical solution sent through the second boom 41, as described above,
The liquid flows into the spray pipe 64 provided in each of the 42L and 42R through the filters 63
23 ... sprayed.

When the car is washed by discharging water using the spray pump 4, a part of the channel of the chemical solution configured as described above is used. When washing the car, water is poured into the chemical tank 24, and the water flowing out of the water inlet 24 a of the chemical tank 24 is sent to the spray pump 4 through the strainer 78. The water pumped from the spray pump 4 is
From the car wash hose 95a connected to a valve 95 provided immediately downstream of the valve. As described above, the water put in the chemical solution tank 24 may be used by sucking irrigation water using the water absorption hose 55. However, since the water once flowing into the chemical liquid tank 24 mixes with the chemical liquid remaining in the chemical liquid tank 24, a very small amount of the chemical liquid is also mixed with the water used for car washing. Therefore, a car wash valve 96 is specially provided to wash the car with water containing no chemical solution.

The car wash valve 96 is provided as a three-way valve upstream of the strainer 78, and is connected to the chemical solution tank 24 side, the water absorption hose 55, and the strainer 78,
At the time of control work, the chemical solution tank 24 and the strainer 78 are switched so as to communicate with each other. When the vehicle is washed with water that does not contain a chemical solution, the car wash valve 96 is switched so that the water absorbing hose 55 and the strainer 78 communicate with each other. When the inflow of water is cut off and water is flown into the strainer 78 by the water absorption hose 55, it is possible to wash the vehicle with water that does not contain a chemical solution.

[0068]

As described above, the present invention has the following advantages.

That is, according to the first aspect of the present invention, the fuel tank is disposed on the side of the chemical solution tank in the spraying machine in which the traveling machine body is provided with the chemical solution tank, the nozzle, the spray pump for pumping the chemical solution, and the like. The overall length of the aircraft can be reduced compared to when the fuel tank is placed inside the hood,
The turning radius is not increased, and the workability can be improved, and the steering performance is improved. Also, since the hood can be made smaller, the field of view can be enlarged, and the work can be easily checked.

Since the fuel supply port of the fuel tank protrudes from the side of the chemical liquid tank, it is easy to supply the fuel to the fuel tank.

According to a third aspect of the present invention, a space is formed by cutting out a lower portion of a side of the chemical solution tank, and a fuel tank is disposed in the space. Fuel tank can be equipped.

Since the fuel tank is disposed above the body frame, the lower part of the fuel tank is protected by the body frame or the like to prevent the fuel tank from being damaged. In addition, the spraying machine travels in a field where tall rice is lined up, so that the fuel tank and the rice do not come into contact with each other so that the fuel tank and the rice are not damaged. Since the load of the fuel tank is applied from above the body frame, the heavy fuel tank can be favorably supported.

[Brief description of the drawings]

FIG. 1 is an overall side view of a spraying machine according to an embodiment.

FIG. 2 is an overall plan view of the same.

FIG. 3 is a side view of the front axle case.

FIG. 4 is a plan view in which a storage container and a hose reel for hand spraying are attached to a rear portion of the machine body.

FIG. 5 is a side view of the same.

FIG. 6 is a front view showing a connecting portion between a front boom and a side boom.

FIG. 7 is also a schematic front view.

8 is a view as viewed in the direction of arrows XX in FIG. 7;

FIG. 9 is a plan view showing opening and closing of a side boom.

FIG. 10 is a developed view of power transmission of the spraying machine.

FIG. 11 is a front view of a chemical solution tank according to the present invention.

FIG. 12 is a plan view of the same.

FIG. 13 is a left side view of the same.

FIG. 14 is a plan view of a chemical solution tank containing a water absorption hose.

FIG. 15 is a left side sectional view showing the inside of the chemical solution tank.

FIG. 16 is a perspective view showing a partition plate.

FIG. 17 is a rear view of the chemical solution tank.

FIG. 18 is a bottom view of the vicinity of a water inlet of a chemical solution tank.

FIG. 19 is a rear sectional view of the same.

FIG. 20 is a diagram showing a flow of a chemical solution.

[Description of Signs] 4 Spray Pump 6L ・ 6R Airframe 14 Driver's Seat 22 Running Aircraft 23 Nozzle 24 Chemical Liquid Tank 48 Fuel Tank 48a Refueling Port

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiaki Kasahara 1-32 Chayacho, Kita-ku, Osaka, Osaka Prefecture Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Kenji Mon32 1-32, Chayacho, Kita-ku, Osaka, Osaka No. F-term in Yanmar Agricultural Machinery Co., Ltd. (reference) 2B121 CB03 CB33 CB42 CB66 CB70 EA26 FA02 FA05 3D038 CA15 CA17 CA40 CB05 CC14 CD00 CD01 CD02 CD13 4D074 AA05 BB06 CC04 CC24 CC32 CC34 CC51

Claims (4)

[Claims] A spraying machine having a traveling machine body equipped with a chemical tank, a nozzle, a spray pump for pressure-feeding a chemical, and the like.
A spraying machine, wherein a fuel tank is disposed on a side of a chemical solution tank. 2. The spraying machine according to claim 1, wherein a fuel supply port of the fuel tank protrudes from a side of the chemical liquid tank. 3. The spraying machine according to claim 1, wherein a space is formed by cutting a lower portion of a side of the chemical solution tank, and a fuel tank is disposed in the space. 4. The spraying machine according to claim 1, wherein the fuel tank is disposed above the body frame.