JPH083230Y2 - Fertilizer spreader shutter - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to the structure of a shutter of a fertilizer sprayer for spraying lime, fertilizer and the like.

(B) Prior art The shutter configuration in a conventional fertilizer sprayer is, for example, as disclosed in Japanese Utility Model Publication No. 61-207117, Japanese Utility Model Publication No. 56-24826, and Japanese Utility Model Publication No. 64-11620. The bottom plate and the shutter are each provided with a drop hole, and the shutter is slid to change the overlapping area of the drop holes to adjust the drop amount, that is, the spray amount. Then, if the overlapping portion of the openings is eliminated, the shutter is closed and the spraying is stopped.

Further, as a technique for providing an opening / closing shutter that pivots in the vertical direction at the discharge port at the bottom of the hopper, techniques such as Japanese Utility Model Publication No. 56-53602 and Japanese Utility Model Publication No. 48-24570 are known.

(C) Problems to be solved by the invention However, in order to adjust the amount of spray, the shutter is slid by rotating an adjusting lever connected to the shutter,
Since the spraying amount was changed, in the cabin type tractor, the adjustment lever of the spreader could not be rotated while sitting on the seat, and the shutter could not be opened or closed.

In addition, when the shutter was slid, fertilizer was apt to be caught between the shutter and the bottom plate, and the fertilizer could leak from the gap, and the fertilizer was clogged between them and the opening / closing operation of the shutter was sometimes hard. .

(D) Means for Solving the Problem The present invention is configured as follows in order to solve such a problem.

In a fertilizer spraying machine for feeding fertilizer and the like with an agitator 6, a spraying amount adjusting shutter 15 that slides left and right by a manual handle 24 is provided on the lower surface of the bottom plate 5b of the hopper 5, and an opening / closing shutter is provided on the lower surface of the spraying amount adjusting shutter 15. The opening / closing shutter 16 is arranged in such a manner that the opening / closing shutter 16 is rotated in the vertical direction by the rotation of a drive motor 30 which can be operated remotely, and the drop hole 15a of the spray amount adjusting shutter 15 is closed from below.

(E) Embodiment of the Invention Next, the structure of the embodiment shown in the accompanying drawings will be described.

Figure 1 is a rear view of the fertilizer spreader, and Figure 2 is a side view of the same.
FIG. 3 is a perspective view of the spraying amount adjusting portion, and FIG. 4 is a side view of the shutter opening / closing device.

Referring to FIGS. 1 and 2, the fertilizer sprayer of this embodiment has a rear end of a top link of a three-point link type working equipment mounting device at the rear of a tractor, which is connected to an upper hitch 2 at an upper end of a support frame 1 and after lower linking. The end is attached to a lower hitch 3 protruding forward from the lower part of the support frame 1.

An L-shaped base 4 in a side view is provided at the lower end of the support frame 1, and a hopper 5 is fixedly provided on the rear surface of the support frame 1. The hopper 5 has an inverted triangular shape in a side view, a lid 5a is provided at the upper end, an agitator (feeding vane) 6 and a remaining amount sensor 7 are provided at the lower part, and the spray amount adjusting device of the present invention is provided on the lower surface. Has been.

That is, the agitator 6 has its shaft crossed between the lower side plate of the hopper 5 and the central gear box 9, and the input shaft protruding forward from the gear box 9 is the PTO of the tractor.
The agitator 6 is driven by being connected to the shaft via a universal joint. It is also possible to attach the motor 10 to one side of the hopper 5 to drive the agitator 6 as shown by the chain double-dashed line. Reference numeral 8 is an ON / OFF switch of the motor 10.

The remaining amount sensor 7 is composed of a proximity switch and the like, and is provided in the front and rear surfaces of the hopper 5 slightly above the agitator 6, and is connected to the controller 11 to turn on when the fertilizer runs out.
Then, the lamp 12 on the control box 14 provided near the seat of the tractor is turned on and the buzzer 13 is sounded to inform the operator.

Further, drop holes 5c, 5c ... Are opened in the bottom plate 5b of the hopper 5, and a spray amount adjusting shutter 15 is supported by shutter guides 17, 17 ,. The spray amount adjusting shutter 15 has drop holes 15a, 15a.
Is opened, and a spraying amount adjusting portion is provided in the center as shown in FIG.

That is, the arm 19 is projected from the side surface of the spray amount adjusting shutter 15, and the nut portion 19a is provided at the tip of the arm 19,
A screw rod 20 is screwed to the nut portion 19a, a bevel gear 21 is fixedly attached to an end of the screw rod 20, a bevel gear 22 meshes with the bevel gear 21, and the bevel gears 21 and 22 are in a gear box 23. The bevel gear 22 and the handle 24
Is projected and the handle 24 is turned to rotate the screw rod.
20 is rotated, the arm 19 is slid to the left and right, and the spray amount adjustment shutter 15 is slid to the left and right, the overlapping area of the drop hole 15a and the drop hole 5c of the bottom plate 5b is adjusted, and the spray amount is adjusted. It is.

An opening / closing shutter is provided below the spray amount adjusting shutter 15.
16 is provided, and the opening / closing shutter 16 is divided into left and right as shown in FIGS.
A J-shaped supporting arm 25, 25 ... Is fixed to the lower surface of the stay 26, and the other end of the supporting arm 25, 25.
It is pivotally supported by 26 ...

Further, drive motors 30, 30 for driving the left and right shutters 16, 16 are projected from the lower part of the hopper 5, and one of them has a worm gear case 31 fixed to the drive motor 30 and an output shaft 30a. Worm gear 3 fixed to
2 and a worm wheel 33 that meshes with the worm gear 32 are installed. A drive arm 34 is fixedly mounted on the output shaft 33a of the worm wheel 33, and a connecting link 27 is pivotally connected between the tip of the drive arm 34 and a midway portion of the support arm 25.

Then, limit switches 35, 36 are provided on the gear case 31 to stop the drive motor 30 at the closed position and the open position of the opening / closing shutter 16, and the limit switches 35, 36 are provided.
The drive motor 30 is connected to the controller 11 as shown in FIG.
A closing switch 37 and an opening switch 38 for opening and closing the opening / closing shutter 16 by driving 30 are connected.

Then select the right or left open / close shutter 16,
A changeover switch 39 is connected to the controller 11 so that fertilizer can be sprayed only on one side.

The limit switches 35 and 36 are omitted, and a stopper is provided in place of the limit switch 36 so that the drive motor
It is also possible to configure to automatically stop 30 when a certain load is applied to 30.

In such a configuration, when the handle 24 is rotated to adjust the spray amount, the spray amount adjusting shutter 15 is slid to the left and right, and the size of the overlapping portion of the drop hole 15a and the drop hole 5c of the bottom plate 5b is changed. When the opening switch 38 is turned on at the start of work, the drive motor 30 is driven and the drive arm 34 is rotated in the arrow A direction via the worm gear 32 and the worm wheel 33 to open the open / close shutter 16. Then, when the limit switch 36 is turned on, the drive motor 30 is stopped.

When the closing switch 37 is turned on at the time of traveling or at the end of work, the drive motor 30 is rotated in the reverse direction, the drive arm 34 is also rotated in the reverse direction, the opening / closing shutter 16 is closed, and when the limit switch 35 is turned on, the drive motor 30 is turned on. Is stopped.

When the agitator 6 is driven by the motor 10, it is possible to stop the motor 10 at the same time by turning on the closing switch 37, preventing excessive spraying and simplifying the stopping operation. .

(F) Effects of the invention With the above-mentioned configuration, the invention has the following effects.

First, since the two shutters, the spray amount adjustment shutter and the opening / closing shutter, are provided, there is no need to open / close the spray amount adjustment shutter at the time of traveling, and there is no need to adjust the spray amount each time the vehicle travels. A constant spray rate is obtained.

Secondly, since two shutters are provided, even if fertilizer or the like is sandwiched between the spray amount adjustment shutter and the bottom plate, the opening and closing shutter can prevent leakage and ensure start and stop of spraying. It became.

Thirdly, since the opening and closing shutter is driven by a drive motor to open and close, remote operation is possible, and even a cabin type tractor can be easily operated while the operator is sitting on the seat. .

[Brief description of drawings]

FIG. 1 is a rear view of the fertilizer spreader, FIG. 2 is a side view of the same, FIG. 3 is a perspective view of a spraying amount adjusting portion, and FIG. 4 is a side view of a shutter opening / closing device. 5 …… Hopper 5b …… Bottom plate 6 …… Agitator 15 …… Spray amount adjusting shutter 16 …… Opening / closing shutter 24 …… Handle 30 …… Drive motor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 56-24826 (JP, U) Rikai 61-207117 (JP, U) Rikko 48-24570 (JP, Y1) Rikou 56- 53602 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A fertilizer spreader for feeding fertilizer and the like by an agitator 6, and a spray amount adjusting shutter 15 which slides left and right on a lower surface of a bottom plate 5b of a hopper 5 by a manual handle 24.
The opening / closing shutter 16 is disposed on the lower surface of the spraying amount adjusting shutter 15, and the opening / closing shutter 16 is rotated in the vertical direction by the rotation of the drive motor 30 which can be operated remotely, and the drop hole 15a of the spraying amount adjusting shutter 15 is provided. A shutter for fertilizer spreaders, characterized in that the shutter is configured to be closed from below.