JPS598187B2 - Self-propelled spreader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-propelled sprayer used primarily for spraying chemical solutions, water, and fertilizer solutions to agricultural crops within a cultivation house.

Conventionally, chemical spraying work has often been carried out by workers carrying around spraying nozzles, but inside a greenhouse, workers inhale a large amount of chemical spray, which may have an adverse effect on the human body. be.

On the other hand, dispersion nozzles are installed at various locations, which has the disadvantage of increasing equipment costs. In view of the above-mentioned conventional problems, the present invention aims to provide a sprayer that travels while automatically spraying a liquid such as a chemical solution, and that retreats back to its original position after spraying.

The details of this invention will be explained below based on the illustrated embodiments.

In FIGS. 1 and 2, reference numeral 1 denotes a truck, on which a ground driving wheel 2 is mounted at the front and an idler wheel 3 is mounted at the rear. The ground contact drive wheel 2 is approximately drum-shaped, and has a circumferential groove 4 formed in the center in the width direction. At the front end of the truck 1, a column 6 with a large number of spraying nozzles 5 attached thereto is erected, and behind it a winding drum 8 for a hose 7 that supplies chemical liquid to the spraying nozzles 5 is installed in the width direction of the truck. It is mounted on a shaft so that it can rotate freely around the shaft. The hose 7 is connected to the spray nozzle 5 through the outlet (not shown) of the winding drum 8, and the end of the hose 7 is connected to the ground from the card roller 9 and into the circumferential groove of the drive wheel 2. 4 and is pulled out to the rear of the truck 1 via a guide pipe 10. Reference numeral 11 is an engine, which is mounted on the rear of the truck 1.

The drive shaft 11a of the engine 11 is connected via a reducer 12 to a main shaft 13 mounted in the width direction of the bogie, and as shown in FIG.
The rotation is transmitted to the winding drum 8 and the winding drum 8 separately.

That is, the main shaft 13 and the ground driving wheel 2 are interlocked by pulleys 14, 15 and a belt 16, and rotation transmission is interrupted by a clutch (hereinafter referred to as a running latch) 17. The running latch IT includes a tension pulley 18 and a crank arm 19 that abut on the belt 16 in a separable manner.
It is composed of. On the other hand, the rotation of the main shaft 13 is controlled by the gear 2.
0 and 21 to the intermediate shaft 22, and the winding drum 8
The winding drum 8 is rotated in the winding direction (in the example shown, in the opposite direction to the ground and the drive wheels 2), and a clutch ( A winding clutch (hereinafter referred to as a winding clutch) 26 is provided. The take-up latch 26 consists of a tension lever 27 and a crank arm 28, and a tension spring 29 is attached to the crank arm 28 so as to press the tension lever 27 against the belt 25.

Reference numeral 30 denotes an operating body that moves backward when it collides with an external object such as a pile, and is connected to both clutches 26 so that the moving latch 17 is disengaged and the take-up clutch 26 is engaged.

The operating body 30 includes a horizontal bar 31 installed horizontally at the front end of the trolley 1;
It consists of two rods 32 and 32' running in the front and back direction of the truck 1, and the tension spring 29 is biased in the backward direction via the crank arm 28, and the latch claw 33 prevents the rod from moving backward. ing. Reference numeral 34 denotes a bumper-shaped abutting body, which is supported in front of the operating body 30 so as to be movable back and forth, and when it retreats, the latch claw 33 is flipped up from the horizontal bar 31.

In the figure, 35 is a screw shaft with double threads, and pulleys 36, 3
The card roller 9 is interlocked with the take-up drum 8 via the roller 7 and the belt 38, and is reciprocated via a threaded assembly 39 that is threaded thereto.

Reference numeral 40 designates a stop bumper, and when the vehicle collides with an external object during reversing, the fuel supply lever 42 of the engine 11 is pushed by a push lever 41 which is erected thereon.

In the above configuration, when the operating body 30 is in the front position and its retreat is prevented by the latch pawl 33, the moving latch 17 is in the engaged state and the take-up clutch 26 is in the disengaged state. There is.

When the engine 11 is started, its rotational force is transmitted from the reducer 12 and the main shaft 13 to the ground-contact driving wheel 2.
The cart 2 moves forward with the rotation of. At this time, the winding drum 8
Since it is rotatable, the hose 7 will be pulled out as the trolley 1 moves forward. The base end of this hose 7 shall be connected to a device such as a fixed pump;
The chemical liquid that is force-fed from the pump is sprayed around the travel path of the truck 1 from the spray nozzle 5 through the hose 7 and the winding drum 8. The trolley 1 travels to a predetermined position, where the contact body 34
When the clutch collides with an external object such as a pile, the locking pawl 33 is flipped up by the retreating of the abutting body 34, and the operating body 30 is moved backward, thereby switching both clutches 17 and 26.

That is, the running latch 17 is disengaged and the drive wheel 2 is free to rotate, and the winding clutch 26 is engaged and the winding drum 8 rotates in the winding direction. Since the hose 7 is attached to a fixing device such as a pump, the trolley 1 is pulled rearward by winding up the hose 7 and moves backward. The trolley 1 retreats to a predetermined position,
When the stop bumper 40 hits a stake or the like, the supply lever 42 is pushed and rotated by the retraction of the bumper 40.
The driving of the engine 11 is stopped.

The illustrated example shows a clutch using only one tension pump, but an interlocking clutch is interposed between the main shaft 13 and the pulley 14, and between the intermediate shaft 22 and the pulley 23, and these are operated. It may be connected to the body 30, and various types of running latches and take-up clutches may be employed.

As described above, the sprayer of the present invention moves forward while spraying the chemical solution by rotating the ground-contact drive wheels, and when it collides with an external object such as a pile, the clutch switches, winds up the hose, and moves backward. While moving and spraying the chemical solution,
Operators only need to operate from a position away from the spraying area, and can work safely without the risk of inhaling the chemical solution.

In addition, since the hose is wound up to move the cart backwards, there is no need for a special mechanism for running backwards, simplifying the overall structure.Moreover, the hose does not slacken when moving backwards. You can move backwards smoothly.

[Brief explanation of drawings]

FIG. 1 is a side view of the spreader of the present invention, FIG. 2 is a top view with the winding drum omitted, and FIG. 3 is a schematic diagram of the main parts. 1...Dolly, 2...Ground drive wheel, 5.
...Spraying nozzle, 7...Hose, 8...
... Winding drum, 11 ... Engine, 1
2...Reducer, 13...Main shaft, 17.
...Running latch, 22 ...Intermediate shaft, 2
6... Winding clutch, 30... Operation body.

Claims (1)

[Claims] 1 A dolly with a ground-contact drive wheel mounted on the shaft is equipped with a spray nozzle, a winding drum for a hose that supplies chemical liquid, etc. to the nozzle, an operating body that is activated by a collision with an external object, and an engine, and the engine A ground drive wheel and a winding drum are connected to the drive shaft of the winding drum through clutches, and each clutch is connected to the operating body, and the hose is fed out from the winding drum and moves forward by rotation of the ground drive wheel. A self-propelled spreader in which both clutches are switched by the actuation of the operating body when it collides with an object, and the sprayer moves backward by winding up the hose.