JP3221433B2 - Scattering vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spraying vehicle having a chemical tank for spraying a chemical for control.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Application Publication No. 56-35
As disclosed in Japanese Patent Publication No. 276, there is known a spraying work vehicle in which the left and right sides and the rear of the driver's seat 4 are surrounded by a concave chemical solution tank having an open front to secure the capacity of the chemical solution tank. However, since these spraying work vehicles are configured only for the spraying operation, they have a structure in which a spraying device, a chemical solution tank, and the like are individually provided on a regular vehicle.

[0003] On the other hand, there are various types of agriculture in recent years. For example, since tillage work, transplantation work, pest control work and the like are each performed by a dedicated work vehicle, there has been a problem that management costs are high. It is desirable that the working vehicle used in these agricultures be configured so as to make the vehicle length as short as possible, turn without leaving a large headland, and reduce the man-hours required for the headland work at the end of the work.

Accordingly, the present invention can cope with other types of work. In particular, when configuring a spraying work vehicle equipped with an elevating link device, a tank form is ensured at the time of spraying a chemical solution to provide a vehicle form having a good front-to-left and right-to-left weight balance. However, when performing other types of work, there arises a technical problem of configuring a compact vehicle configuration so that the vehicle can make a small turn, and an object of the present invention is to solve this problem.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a spraying work vehicle is constituted as follows. That is, the axle case 22F that supports the left and right front wheels 10 (10).
Boom 37a (37a) which sprays the chemical solution forward
Axle case 22R arranged and supporting left and right rear wheels 1 (1)
A plane surrounding the left and right sides and the rear of the driver's seat 4 above
A vertically symmetrical chemical liquid tank 32 is detachably disposed, and an arm 25 of an elevating link projects behind the axle case 22R that supports the rear wheel 1 (1). Pump 3a for pumping the chemical solution
And a spraying work vehicle characterized by having

[0006]

According to the present invention, in a spraying work vehicle provided with a chemical solution tank 32, when a lifting link is formed on the vehicle so as to be able to cope with other kinds of work, the spraying boom 37a (37a), Chemical tank 32, pump 3a
Is formed and arranged as described above, it is possible to configure a vehicle with weight balance in front, rear, left and right. Also, since no space on the vehicle is required for the pump 32,
The vehicle can have a short vehicle length that can be used for other types of work.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the spraying work vehicle 9 is provided with an engine 14 at a front portion of a vehicle body, and a transmission case 21 provided with a transmission mechanism for transmitting the rotational power at a rear portion of the engine 14. Main frames 11, 11 extending rearward are provided on both left and right sides of the case 21 to form a main frame of the vehicle body.

Also, in front of the main frames 11, 11,
A front axle drive case 22F is provided and the front wheel 1
0, 10 and a rear axle drive case 22R is provided at the rear end of the main frames 11, 11, and the rear axle 22s
And the rear wheels 1, 1 are pivotally supported. Then, the rotational power of the engine 11 is transmitted via a transmission mechanism in a transmission case 21, and further, the rear wheels 1, 1 are driven through the main frames 11, 11. Also, from the rear part of the conductive case 21, the left and right main frames 11, 11
A drive shaft 23 is provided so as to protrude there between, and is configured to drive a liquid pump 3a that pressure-feeds a liquid such as a chemical solution described later. A front frame 12 is connected to the front portions of the main frames 11 and 11, and the fog portion 3 is attached to the front end of the front frame 12.
There is provided a hitch 13 for connecting 7.

The fogging section 37 is composed of a tubular boom section 37a for feeding a chemical solution and the like, a nozzle 37b attached thereto, and the like.
a is extended left and right. Engine 1
4 has a front grill 17 covering the front, a bonnet 15 above, and side covers 16 on both left and right sides. An instrument panel 18 is provided at the rear of the bonnet 15, and a steering handle 19 is provided to protrude above the instrument panel 18.

Next, the configuration of the driving seat 4 of the spraying work vehicle 9 will be described. A floor 20 is provided above the main frames 11, 11, and rear wheels 1, 1 are provided at the rear end of the floor 20.
The left and right fenders 2 and 2 that cover the upper part are connected and provided. And the floor 20 between the left and right fenders 2, 2
Above and in front of a rear axle drive case 22R that supports the rear wheels 1 and 1 in a side view, a "horizontal L-shaped" support frame 6 is provided upright, and a driver's seat 4 is mounted on this upper portion. Configuration. Thereby, the weight of the driver sitting on the driver's seat 4 is applied between the axles of the front and rear wheels 10, 1 so that the weight distribution is made as close as possible to the center of the vehicle body.

Next, the rear portion of the vehicle body will be described. A support shaft 24 is provided behind the main frames 11, 11, and an arm 25 of a two-point link mechanism is rotatably connected to the support shaft 24. A machine frame 27 is provided at the rear end of the main frame 11, and a hydraulic cylinder 28 is rotatably provided therein. Then, a drive arm 26 is provided at a rotation base of the arm 25, and the drive arm 26 is connected to a piston of a hydraulic cylinder 28.

Thus, the piston of the hydraulic cylinder 28 is expanded and contracted and the arm 25 is vertically rotated. The rear end of the arm 25 has a rear hitch 2
9, a pump 3a for pumping a liquid such as a chemical solution is provided inside the rear hitch 29, and the upper part of the pump 3a is covered with a substantially flat cover plate 7. The pump 3a is linked to the drive shaft 23 via a universal joint 3b.

On the other hand, the intermediate portion of the arm 25 and the machine frame 27
The locking holes 30 and 31 are respectively opened in the lower part of the bracket, and the locking pins are inserted through the locking holes 30 and 31, respectively.
The arm 25 is fixed to the machine frame 27. Thereby, when this arm 25 is fixed,
The upper surface 2a of the fender 2 and the cover plate 7 form a substantially flat surface, and constitute a liquid tank mounting extension.

As shown in FIGS. 3 and 4, the liquid tank 32 has an inlet 42 at the upper part thereof. In a top view, the upper and lower concave portions 33 are provided with an open front, and the left and right lower portions are connected to form a front and rear concave portion 34 while leaving the tip portions of the upper and lower concave portions 33 at a fixed distance. Also,
At the rear of the tank 32, a tank fixing groove 40 of a fixed length on the left and right
Is formed.

When the liquid tank 32 is mounted on the vehicle body, the driver's seat 4 is sandwiched between the upper and lower recesses 33 and the tank 32 is pushed in until the front end of the front and rear recesses 34 is regulated by the support frame 6. And rear hitch 2
In a state where the fixing bar 41 of the tank fixing tool 35 provided in 9 is in contact with the fixing groove 40, the fixing bar 41 is tightened and fixed with the tightening screw 36.

In this way, when the vehicle turns with the filling of the liquid chemical or the like, even if the liquid tank 32 is shifted in the lateral direction, the liquid tank 32 comes into contact with the driver's seat 4 or the support frame 6. Lateral displacement can be regulated.
Further, since the lower space 5 is formed below the driver's seat 4 and a part of the liquid tank 32 is arranged here, even when the vehicle runs on a rough terrain, the vertical bound of the tank 32 can be restricted. it can. The liquid tank 3
2 is located above the rear axle drive case 22R, so that the position of the center of gravity is set at the center of the vehicle body as compared with the case where all of the tank 32 is disposed behind the axle drive case 22. (A turning fulcrum at the time of steering), and the vehicle body does not swing greatly during steering.

The spraying work vehicle is provided with a chemical solution tank 32.
Is provided with a recess with an open front, and the driver's seat 4 is provided in this recess. Therefore, compared with the conventional configuration in which a tank is provided at the end of the vehicle body, a lower center of gravity is provided with the same tank capacity. And a two-point link mechanism arm 2
5 is provided with the chemical pump 3a, so that the space on the vehicle can be effectively utilized, and the front-rear length is short, which can cope with other types of work.
A compact vehicle configuration can be configured. Also,
The chemical liquid pump 3a is provided rearward of the rear wheel axle case 22, so that a spraying vehicle having a good weight balance between the front and rear can be formed.

[Brief description of the drawings]

FIG. 1 is an overall side view of a vehicle body.

FIG. 2 is a side view showing a main frame of the vehicle body.

FIG. 3 is an overall side view when a liquid tank and a spray unit are mounted on a vehicle body.

FIG. 4 is a sectional view of a chemical solution tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear wheel 10 Front wheel 22F Front wheel drive shaft case 22R Rear wheel drive shaft case 25 Arm of elevating link 32 Chemical tank 37a Boom

Claims (1)

(57) [Claims] (1)Left and rightAxle cable supporting front wheel 10 (10)
Boom that sprays chemicals ahead of base 22F37a
(37a)Arrange, left and rightAxle supporting rear wheel 1 (1)
Above case 22RThe left and right sides and back of the driver's seat 4
Surrounding planeChemical tank 32Detachable
ToAxle casing that is arranged and supports the rear wheel 1 (1).
The arm 25 of the lifting link projects beyond the
Then, the chemical in the tank 32 is pressure-fed to the arm 25.
Pump 3a providedCharacterized byScattering work vehicle.