JP3221432B2 - 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 constitutes a spraying work vehicle equipped with an elevating link device so as to be applicable to other kinds of work.
In addition, a technical problem arises in that the tank capacity is secured during the application of the chemical solution and a compact vehicle configuration is formed so that the vehicle can make a small turn when performing other types of work. The present invention has an object to solve the 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, in the spraying work vehicle surrounding the left and right sides and the rear of the driver's seat 4 with a concave chemical solution tank 32 having an open front, a chemical solution tank mounting portion is provided on both left and right sides of the vehicle supporting the driver's seat 4. 2a constitute, on the rear side of the mounting portion 2a, the chemical tank protrude arm 25 of the lifting links
A spreading work vehicle is characterized in that a mounting extension portion 7 for mounting the rear portion of 32 is formed .

[0006]

According to the present invention, in the spraying work vehicle surrounding the left and right sides and the rear of the driver's seat 4 with a concave chemical solution tank 32 whose front is open, the arm 25 of the lifting link is provided.
Is used as a rear mounting portion of the chemical liquid tank 32, for example, as compared with a configuration in which a tank mounting portion is always provided on a vehicle body, the entire vehicle is configured to be compact, and in other types of work, the vehicle turns in a small space. be able to.

[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.

An axle drive case 22 is provided at the rear end of the main frames 11, 11, and the rear wheels 1, 1 are pivotally supported on the rear axle 22s. 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. A drive shaft 23 is provided projecting from the rear part of the conductive case 21 between the left and right main frames 11, 11 to drive a liquid pump 3a for feeding a liquid such as a chemical solution, which will be described later.
In addition, a front frame 1 is provided in front of the main frames 11 and 11.
A hitch 13 is provided at the front end of the front frame 12 to connect the fog section 37 to the front end of the front frame 12.

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 an axle drive case 22 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 the upper portion. It has a 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 axle drive case 22, the center of gravity of the vehicle body (as compared to arranging the entire tank 32 behind the axle drive case 22) (The turning fulcrum at the time of steering), and the vehicle body does not swing greatly during the 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.

[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]

 3a Chemical liquid pump 4 Driver's seat 9 Sprayer 25 Arm 32 Liquid tank 33 Upper and lower recess

Claims (1)

(57) [Claims] 1. 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 32 having an open front, and a chemical solution tank is provided on both left and right sides of the vehicle supporting the driver's seat 4. A mounting portion 2a is formed, and an arm 25 of a lifting link is projected behind the mounting portion 2a to
A spraying work vehicle, wherein a mounting extension portion 7 for mounting a rear portion of the chemical liquid tank 32 is formed .