JP2006006113A - Fertilizer distributor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To readily regulate the amount of fertilizer applied, to have excellent application precision, to carry out combined operation and to apply organic, etc., in a fertilizer distributor to be connected to a tractor. <P>SOLUTION: The fertilizer distributor has constitution that a fertilizing part has an application port at the rear side of the bottom of a hopper for storing fertilizer, a screw conveyor is driven toward the application port by power from the tractor, a regulation means for regulating a flow amount by changing a gap between hopper side walls through which fertilizer drops and a retention prevention means that shakes in the direction perpendicular to the longitudinal direction of the screw conveyor and prevents flow retention of fertilizer are arranged above the screw conveyor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fertilizer spreader that is connected to a tractor and sprays organic fertilizer and granular fertilizer in a streak pattern.

The present invention intends to apply fertilizer in a striped manner to a crop cultivation pad. Conventionally, as such a fertilizer spreader, for example, a compost spreader described in Japanese Utility Model Publication No. 55-176707 is known. .
Japanese Utility Model Publication No. 55-176707

  The driving of the feeding conveyor for feeding the fertilizer of the compost spreader to the discharge port in the prior art is driven by the grounding wheel, which is driven by the driving force. When the traveling speed of the tractor changes, The number of rotations of the wheel also changes and the amount of feeding of the conveyor also changes. However, there is a problem that the grounding wheel slips depending on the field conditions and traveling speed conditions, and a uniform spray amount cannot be obtained. Also, when changing the spraying amount per unit area, it is effective to change the conveyor feed speed with respect to the tractor traveling speed, but the grounding wheel is synchronized with the traveling speed, so the change of the spraying amount There was a problem that could not be.

In addition, since a belt conveyor is used for feeding and feeding fertilizer, in the case of organic fertilizer and the like, there is a problem that the feeding amount is not stabilized due to stay or slip.
In addition, for example, when a groove is formed in the ridge and fertilizer is spread in a streak shape, it is necessary to open the groove in a separate process. However, since the spray hole is at the front end, it is not possible to secure a mounting space for these devices, which causes inconvenience when performing such combined work.

  Accordingly, an object of the present invention is to provide a fertilizer spreader that can easily adjust the amount of fertilizer applied, has good application accuracy, can be combined, and can disperse fertilizers with poor flowability, such as organic fertilizers. There is.

  In order to solve the above problems, in a fertilizer spreader having a mounting portion connected to a tractor, a hopper for containing fertilizer, and a fertilizer for spraying fertilizer, the fertilizer has a spray port at the rear end side of the hopper bottom. A screw conveyor is arranged toward the spray port, and an open / close plate that changes the gap between the fixed plate provided above the screw conveyor and the side wall of the hopper is provided on the fixed plate so as to be slidable. An adjusting means for adjusting the amount was provided, and the screw conveyor was configured to be driven by power from the tractor.

  Also, a stay prevention means is provided that is located above the screw conveyor in the hopper and swings in a direction orthogonal to the longitudinal direction of the screw conveyor to prevent the fertilizer in the hopper from flowing down. It was configured to swing.

  With the configuration as described above, according to the first aspect of the present invention, since there is a spray hole on the rear end side of the hobber bottom portion, a complex working means such as grooving before fertilizer spraying is provided in the space below the hopper. The fertilizer can be driven reliably by the power of the tractor and is not affected by slipping of the grounding wheel, etc., and the fertilizer feeding and feeding in the hopper has a spiral blade on the rotating shaft. Therefore, the fertilizer is forcibly and reliably conveyed to obtain a precise application amount, which is also effective for small-scale precision application.

  In addition, since the amount of fertilizer that flows down to the screw conveyor can be set by the adjusting means that adjusts the amount of flowing down provided above the screw conveyor, it is possible to easily set the amount of application according to the running speed.

  When moving the fertilizer in the hopper, the entire weight of the fertilizer in the hover acts on and adheres to the screw conveyor due to vibrations, etc., and it becomes a resistance force when starting the screw conveyor, and it can not be started. However, it can be solved by closing and moving the open / close plate.

  Further, according to the invention described in claim 2, organic fertilizer or the like can be obtained by staying prevention means for preventing the fertilizer in the hopper from flowing down above the screw conveyor in a direction perpendicular to the longitudinal direction of the screw conveyor. Even fertilizer with poor flowability does not stay and flows down to the screw conveyor, so that the amount of application is stabilized as it is reliably conveyed by the screw conveyor. Furthermore, it is easy to handle because it is linked to the drive of the screw conveyor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a fertilizer spreader embodying the present invention, FIG. 2 is a rear view of the fertilizer spreader embodying the present invention, and FIG. 3 is a description of the main parts of the retention preventing means and flow rate adjusting means in the front part of the hopper. FIGS. 4A and 4B are explanatory views of the main part of the operation of the stay preventing means and the flow rate adjusting means in the hopper.

  In the figure, a mounting portion 2 is provided in front of the frame 1, and is mounted on a three-point link mechanism of a tractor (not shown) by a lower pin 2a and a top link hole 2b.

  Reference numeral 3 denotes a hopper, and the upper part is wide open so that the fertilizer can be easily introduced, and the fertilizer is inclined and deflated downward so that the fertilizer can easily flow on the slope. These are mounted on the frame 1.

  The fertilizer 7 rotates the feeding screw 4 having a spiral blade on the rotating shaft, conveys the fertilizer in the hopper 3 to the spray port 8 provided at the rear of the bottom of the hopper 3, and drops the fertilizer in a streak form. It is. A flow rate adjusting means 20 is provided above the feeding hopper 4 in the hopper 3, and adjusts the flow rate at which the fertilizer in the hopper 3 flows down to the feeding screw 4. Further, a stay prevention means 9 is provided above the flow rate adjusting means 20, and a swing plate 9 b inclined in a mountain shape around the swing shaft 9 a swings in a direction perpendicular to the longitudinal direction of the feeding screw 4. The fertilizer in the hopper 3 is prevented from staying down.

The feed screw 4 is not shown, but the tractor PTO shaft and the input shaft 5 are connected by a universal joint and driven by the power of the tractor. The power entering the input shaft 5 is idled by the roller chain 10a from the input shaft sprocket 11a. It is transmitted to the sprocket 12a and decelerated, and further transmitted from the output sprocket 11b to the input sprocket 12b fixed to the feeding screw 4 by the roller chain 10b and decelerated, and the feeding screw 4 is driven.

  The rear end of the input shaft 5 is a crankshaft whose axis is eccentric from the input shaft rotation center by a dimension A. The crankshaft is provided with an eccentric boss 6 held by a bearing. When the shaft rotates, the crankshaft portion rotates up, down, left and right with an A dimension eccentric, and one end of the eccentric boss arm 6a extending from the eccentric boss 6 is connected to the swing arm 6b fixed to the swing shaft 9a of the stay prevention means 9. Since they are connected, the eccentric boss 6 swings up and down and left and right, and the swing arm 6b swings up and down to swing the stay prevention means.

  The flow rate adjusting means 20 is provided with a fixed plate 20a inclined in a mountain shape above the feeding screw 4, and an opening / closing plate 20b that slides in contact with the left and right inclined surfaces has a rotation axis in the longitudinal direction of the fixed plate 20a. The arm 20g fixed to the slide shaft 20c and the engagement pin 20h of the opening / closing plate 20b are engaged, and the slide shaft 20c is slid by rotating to change the gap B with the hopper side wall, The flow rate at which the fertilizer flows down to the delivery screw 4 is adjusted. The opening / closing plate 20b can be adjusted by operating a handle 20e provided at the front end of the slide shaft 20c and fixing the opening / closing plate 20b at a position corresponding to the scale of the guide plate 20f.

  Two slide shafts 20c are provided in parallel so that the left and right open / close plates 20b of the fixed plate 20a inclined in a mountain shape can be adjusted. The slide shaft 20c is interlocked by the engagement of both gears 20d at the front end and is operated by a single handle 20e. Can be operated. When the opening / closing plate 20b is provided only on one side of the drawing-in side according to the rotation direction of the feeding screw 4, only one slide shaft 20c is required.

  The wheels 13 are formed by offsetting the caster arm rotation shaft to the caster arm 13a provided on the left and right extending frames so as to be able to travel across the rods or the like that spread fertilizer in a streak shape. It is mounted on the rotating shaft provided and supports the fertilizer spreader.

  14 is a caster wheel which removes the fertilizer spreader from the connection of the tractor and attaches and uses it when storing or moving.

  The grooved plate 16 attached to the frame 1 below the hopper 3 is for opening a groove on the surface of the fertilizer and the ground surface, and fertilizer can be dropped into the groove from the spray hole 8 and sprayed. It is also possible to bury the fertilizer in the soil by refilling the opened groove with a disk rotor 15 provided behind the spray hole 8.

The disk rotor 15 has a concave disk attached with a concave surface facing diagonally forward, and is arranged on both the left and right sides across the ridge, and is attached so that the back is deflated in a reverse octagonal shape in the traveling direction in plan view. Can rotate up and down with respect to the frame 1 and is elastically pressed downward by a spring 15b. When it moves forward, the disk rotor rotates, and the soil is scraped up and raised to the inside.
The grooved plate 16 and the disk rotor 15 can be removed from the frame when not in use.

Cross section of fertilizer spreader Rear view of fertilizer spreader Explanatory drawing of the main parts of the hopper front retention prevention means and flow rate adjustment means Explanatory drawing of the main parts of the retention prevention means and flow rate adjustment means in the hopper

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Mounting part 3 Hopper 4 Feeding screw 5 Input shaft 6 Eccentric boss 6a Eccentric boss arm 6b Oscillating arm 7 Fertilizer 8 Sprinkling port 9 Retention prevention means 9a Oscillating shaft 9b Oscillating plate 10a Roller chain 10b Roller chain 11a Input shaft Sprocket 11b Output sprocket 12a Idle sprocket 12b Input sprocket 13 Wheel 13a Caster arm 14 Caster wheel 15 Disc rotor 15b Spring 15c Arm 16 Groove plate 20 Flow rate adjusting means 20a Fixed plate 20b Open / close plate 20c Slide shaft 20d Gear 20e Handle 20f Guide plate 20g Arm 20h engagement pin

Claims (2)

  In a fertilizer spreader having a mounting part connected to a tractor, a hopper for containing fertilizer, and a fertilizer application part for spreading fertilizer, the fertilizer application part has a spray port on the rear end side of the hopper bottom and is directed to the spray port. A screw conveyor is provided, and an open / close plate that changes the gap between the fixed plate provided above the screw conveyor and the side wall of the hopper is slidably provided on the fixed plate, and there is an adjusting means for adjusting the flow rate of fertilizer. And a fertilizer spreader connected to the tractor, wherein the screw conveyor is driven by power from the tractor. Positioned above the screw conveyor in the hopper, swinging in a direction perpendicular to the longitudinal direction of the screw conveyor to prevent staying of fertilizer in the hopper is provided, and the swinging is interlocked with the drive of the screw conveyor. The fertilizer spreader connected to the tractor according to claim 1.

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