JPH0646533Y2 - Chemical sprayer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a chemical spraying vehicle.

2. Description of the Related Art A chemical spraying vehicle (speed sprayer) is a chemical liquid tank that stores the chemical liquid to be sprayed on the vehicle body, an internal combustion engine that is operated as a power source, a blower that blows an air flow to the outside, and a chemical liquid from the chemical liquid tank. Has a chemical solution spray nozzle that sprays the chemical solution into the air flow from the blower and sprays the chemical solution on the air flow and sprays it to the outside, and drives the wheels while running by driving the wheels with the power from the internal combustion engine. The chemical solution is sprayed to the outside. Such a chemical liquid spraying vehicle rotates in the chemical liquid tank in order to maintain a uniform concentration distribution of the entire chemical liquid stored in the chemical liquid tank and to constantly spray the chemical liquid of a constant concentration during the chemical liquid spraying. An agitating device having an agitating blade is provided. This agitator is generally connected to an internal combustion engine and driven, but in the conventional chemical spray vehicle, since the internal combustion engine and the agitator are arranged relatively far apart from each other, the agitator is driven. The system is complicated, many components are required, and the manufacturing cost is high.

DISCLOSURE OF THE INVENTION Therefore, the present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional technique, and has a compact structure and a chemical spraying device having an agitator that can be manufactured at low cost. The purpose is to provide a car.

Means for Solving the Problems According to the present invention, a chemical spray vehicle has a driver's seat at the front of the vehicle body, a chemical tank behind it, and the front and rear of the vehicle near the rear of the chemical tank. The output pulley attached to the front end of a horizontal output shaft extending in the direction is provided with a gap for disposing an internal combustion engine, and a blower for spraying the chemical liquid is disposed at the rear part of the internal combustion engine, and the rear of the chemical liquid tank is disposed. A stirring device for stirring the chemical liquid in the chemical liquid tank is arranged at a bottom portion near the end, and the stirring device is rotatably supported in the gear box and the gear box attached to the outer surface of the bottom portion of the chemical liquid tank. And a horizontal input shaft having a rear end attached with an input pulley drivingly connected by a belt hung vertically in the gap between the internal combustion engine and the chemical liquid tank, and the horizontal input shaft in the gear box. Input mounted on input shaft A gear, a hole formed in the bottom portion with a smaller diameter than the upper surface of the gear box that is in close contact with the outer surface of the bottom portion, and an upper portion protruding from the upper surface of the gear box and inserted into the hole, A vertical output shaft rotatably supported in the upper portion and having an upper end protruding into the chemical liquid tank, and a stirring blade attached to the vertical output shaft in the gear box and disposed in the chemical liquid in the chemical liquid tank. And having.

Therefore, the stirring device for stirring the chemical liquid in the chemical liquid tank according to the present invention is disposed in the chemical liquid tank in the vicinity of the internal combustion engine arranged at the rear of the chemical liquid tank, and the device can be downsized, and the stirring can be performed. Since the device is connected to the internal combustion engine through the belt and pulley device, the transmission of vibration of the internal combustion engine can be interrupted, and the rotational speed of the agitator appropriately selects the diameter ratio of the pulley and the gear ratio of the gear. Therefore, it can be appropriately set over a wide range.

Embodiment Next, the present invention will be described based on an embodiment of the drawings.

The chemical spray vehicle of this embodiment is generally called a self-propelled speed sprayer. As shown in FIG. 1, a vehicle body 1 travels on the ground by a pair of front wheels 2 and a pair of rear wheels 3. The vehicle body 1 is movably supported, a driver's seat 4 is provided on one side of a front portion of the vehicle body 1, a chemical liquid tank 5 is provided behind the vehicle seat 1 in a substantially central portion of the vehicle body 1, and an internal combustion engine is provided adjacent to the rear side thereof. 6 is mounted, and a blower 7 for spraying the chemical liquid is further provided at the rearmost portion of the vehicle body 1. The internal combustion engine 6 is arranged such that its output shaft 8 extends in the front-rear direction of the vehicle body 1, and the radiator 9 of the internal combustion engine 6 is provided on one side of the vehicle body in order to reduce the length of the vehicle body in the front-rear direction. It is placed toward the side. A power transmission mechanism of a suitable type (a part of which is designated by reference numeral 10) is connected to the rear end of the output shaft 8 of the internal combustion engine 6, and the power transmission mechanism 10 is, as is generally known, The wheel 2 and / or the rear wheel 3 and a pump or the like are drivingly connected to rotationally drive them so that the chemical spray vehicle can travel. Further, the power transmission mechanism 10 has an output V belt pulley 11 attached to its output shaft.
11 is connected by an endless V-belt 15 to an input V-belt pulley 14 fixed to the front end of a rotary shaft 13 of a blade rotor 12 of the blower 7. The output pulley 11 is rotationally driven by the power from the internal combustion engine 6 to rotate the input pulley 14 via the V-belt 15, whereby the blade rotor 12 of the blower 7 is rotationally driven to suck air. Take in from 16,
The accelerated airflow is ejected radially from the outlet 17 to the outside of the vehicle body 1. A plurality of chemical solution spray nozzles 18 are provided at the discharge port 17 of the blower 7, and the chemical solution spray nozzles are provided.
18 is adapted to receive the supply of the chemical solution from the chemical solution tank 5 via a pump (not shown), spray the chemical solution into the air flow of the blower 7, and disperse the chemical solution on the air flow to the outside. .

The internal combustion engine 6 has an output V-belt pulley 19 attached to the front end of the output shaft 8 adjacent to the chemical liquid tank 5. The chemical liquid tank 5 has a stirring device 21 at a bottom portion 20 near the rear end thereof.
Is provided. As shown in FIG. 2, the stirring device 21 has a gear box 23 fixed to the bottom portion 20 of the chemical liquid tank 5 by a plurality of screws 22 (only one of which is shown). The gear box 23 has an input shaft 24 which projects rearward from the vehicle body 1.
Is rotatably supported by bearings 25 and 26, the input shaft 24 has an input V belt pulley 27 fixed to its outer end, and the inner end of the input shaft 24 inside the gear box 23 is The input bevel gear 28 is fixed. The input V-belt pulley 27 is connected to the output V-belt pulley 19 at the front end of the output shaft 8 of the internal combustion engine 6 by an endless V-belt 29, and the input shaft 24 is driven by the driving force of the internal combustion engine 6. It is designed to drive.

The gear box 23 has a hole 30 formed in the bottom portion 20 of the chemical liquid tank 5.
An upper part protruding upward through the inside of the chemical liquid tank 5 through
31 is integrally formed, and the space between the bottom portion 20 of the chemical liquid tank 5 and the upper portion 31 of the gear box 23 is appropriately sealed in a liquid-sealed state. In the upper part 31 of the gear box 23, an output shaft 32 extending in the vertical direction is rotatably supported by bearings 33 and 34, and the output shaft 32 is provided at the lower end in the gear box 23. An output bevel gear 35 that engages with an input bevel gear 28 of the input shaft 24 is fixed. The upper end of the output shaft 32 projects upward from the upper portion 31 of the gear box 23 into the chemical solution tank 5, and a stirring blade 36 is attached to this projecting end. To be placed in the drug solution. Further, a sealing member 37 is provided at the upper end of the upper portion 31 of the gear box 23, and the sealing member 37 prevents the chemical solution in the chemical solution tank 5 from flowing out into the gear box 23.

When the input shaft 24 of the agitator 21 is driven by the driving force of the internal combustion engine 6 as described above, the bevel gear 28 and
The output shaft 32 is rotationally driven via 35, which causes the stirring blades.
36 is rotated in the chemical liquid in the chemical liquid tank 5 to stir the chemical liquid, and the concentration of the whole chemical liquid in the chemical liquid tank 5 is maintained substantially constant. The rotation speed of the stirring blade 36 is V belt pulleys 19 and 27.
The diameter ratio and the gear ratio of the bevel gears 28 and 35 can be appropriately set over a considerably large range. Further, the transmission of vibrations from the internal combustion engine 6 to the stirring device 21 can be greatly damped or absorbed by the V-belt 29.

Effects of the Invention With the configuration of the present invention described above, the present invention not only solves the drawbacks of the conventional technology, but also provides a relatively small diameter hole at the lower corner of the originally rigid chemical solution tank to improve the strength of the chemical solution tank. The stirring device can be easily attached and sealed securely with almost no damage to the shaft, and the bearing spacing of the vertical output shaft is set large to ensure a reliable shaft support. A sufficient space can be taken to improve the stirring performance. Further, according to the present invention, the stirring device for stirring the chemical liquid in the chemical liquid tank is arranged in the chemical liquid tank in the vicinity of the internal combustion engine arranged at the rear of the chemical liquid tank, and the device can be downsized and the structure can be simplified.
Since the stirrer is connected to the internal combustion engine via the belt and the pulley device, the transmission of the vibration of the internal combustion engine can be cut off, and the diameter ratio of the pulley and the gear ratio of the gear of the stirrer can be appropriately selected. The rotation speed of the stirring blade can be set appropriately over a wide range, and since the driver's seat is provided in the front part of the vehicle body, the driver's field of view can be greatly expanded, and the internal combustion engine can be moved rearward from the driver's seat. Since they are arranged far apart from each other, it is possible to considerably reduce the discomfort of noise given to the driver.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a chemical liquid spraying vehicle according to the present invention, and FIG. 2 is a sectional view of a main part of FIG. 1 ... vehicle body, 4 ... driver's seat, 5 ... chemical solution tank, 6 ...
Internal combustion engine, 7 ... Blower, 19,27 ... V belt pulley, 2
1 …… Stirring device, 23 …… Gearbox, 24 …… Input shaft, 28,35…
… Bevel gear, 29 …… V belt, 32 …… Output shaft, 36 …… Stirring blade.

Claims (1)

[Scope of utility model registration request] 1. A driver's seat (4) is provided at the front of a vehicle body (1),
A space for arranging a chemical liquid tank (5) behind it, and arranging an output pulley (19) attached to the front end of a horizontal output shaft (8) extending in the front-rear direction of the vehicle body immediately behind the chemical liquid tank. Is provided with an internal combustion engine (6), and a blower (7) for spraying the chemical liquid is arranged at the rear portion of the internal combustion engine, and a blower (7) for spraying the chemical liquid is provided at a bottom portion (20) near the rear end portion of the chemical liquid tank. A stirring device (21) for stirring the chemical liquid is arranged, the stirring device and a gear box (23) attached to an outer surface of the bottom of the chemical liquid tank, and the internal combustion engine rotatably supported in the gear box. A horizontal input shaft (24) having an input pulley (27) attached at the rear end, which is drivingly connected by a belt (29) suspended vertically in the gap between the engine and the chemical liquid tank,
An input gear (28) attached to the horizontal input shaft in the gear box, and a hole (30) formed in the bottom portion having a diameter smaller than that of the top surface of the gear box which is in close contact with the outer surface of the bottom portion.
An upper portion (31) protruding from the upper surface of the gear box and inserted into the hole, and a vertical output shaft (3) rotatably supported in the upper portion and having an upper end protruding into the chemical liquid tank (3).
2), an output gear (35) attached to the vertical output shaft in the gear box and engaged with the input gear of the horizontal input shaft, and an output gear attached to the upper end of the vertical output shaft in the chemical liquid tank. And a stirring blade (36) arranged in the chemical solution of (1).