JPH0432892Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an improvement of a feeding device in a fertilizer spreader that spreads compost, granular fertilizer, etc.

(Prior Art) In a fertilizer spreader in which a conveyor is disposed under a hopper with an open bottom, the wall of the hopper at the end of conveyance of the conveyor is opened to form a feeding outlet. A shutter was installed to adjust the opening degree of the outlet, and the fertilizer sent by the conveyor was discharged from the outlet while adjusting the amount and spread on the field. In addition, a reversing conveyor is installed at the end of the conveyor that can be adjusted up and down and runs in a direction in which the conveying surface facing the inside of the hopper rises from the bottom to the top. There was something to be returned in the hopper.

(Problem that the invention aims to solve) In the former case, the fertilizer transported in excess of the set delivery amount is forced to the wall on the delivery outlet side and is compacted into a lump, and as this progresses, the fertilizer is transported by the conveyor. Even if a cavity is formed above the fertilizer, the fertilizer from above does not fall down, resulting in the so-called bridging phenomenon. On the other hand, in the latter case, there is a reversing conveyor that returns the fertilizer that has been conveyed in excess of the set delivery amount to the upper position in the hopper, but although this conveyor has a good conveying action, it has a poor effect on loosening the lumps. In addition, it is inefficient because the returned amount is large, and furthermore, especially when the conveyors are separated from each other to increase the amount of fertilizer applied, the conveyance is uneven because the conveyor belt is the only one to carry out. This had the disadvantage of impairing the uniformity of the amount of fertilizer applied.

(Means for Solving the Problems) The present invention has an opening at the bottom of a conveyor on which a wide endless belt is wound so as to run back and forth, and also forms an outlet at the conveyance end side of the conveyor. In a fertilizer spreader equipped with a hopper, a feed roll having a large number of protrusions planted on the circumferential surface of a cylindrical body is horizontally installed at the feed opening so that the vertical distance from the conveyance end of the conveyor can be adjusted. At the same time, the roller at the end of the conveyor is transmitted to be forcibly rotated in the opposite direction to the rotational direction, and a flat discharge adjustment plate is installed on the hopper outlet side, and the circumference facing the inner side of the hopper of the delivery roll is provided. The lower part is installed horizontally so that it can be adjusted toward and away from the locus.

(Function) Work is carried out by driving the aircraft and activating the fertilizer spreading device. As the conveyor rotates, the fertilizer introduced into the hopper cavity is sequentially conveyed from the bottom toward the outlet. The fertilizer that has reached the vicinity of the end of the transport conveyor is discharged from the gap between the lower end of the delivery roll and the upper surface of the transport conveyor and is spread onto the field. The layer to which the transporting action of the transporting conveyor is applied extends above the gap between the roll and the conveyor, and the fertilizer in the upper layer that is subjected to this transporting action is sent so as to abut against the delivery roll. The fertilizer that has reached the raking range of the projecting piece of this delivery roll is swirled upward and separated into two directions by the discharge adjustment plate. That is, in FIG. 2, the fertilizer scooped up between the wall surface of the adjusting plate on the side of the feeding outlet and the outer periphery of the feeding roll is rotated around the outer periphery of the roll, and the fertilizer is discharged from the gap mentioned above. be distributed together with. On the other hand, the fertilizer raked up on the wall surface of the discharge regulating plate facing inside the hopper is successively pushed upward along the wall surface and returned to the upper position within the hopper. and,
If the lower part of the discharge adjustment plate is placed close to the circumferential path of the feed roll, more fertilizer will be returned to the upper position in the hopper and the amount fed by the feed roll will be reduced; on the other hand, if it is separated In this case, the amount of retraction can be decreased and the amount of retraction can be increased.

(Example) A is a self-propelled fertilizer spreader that can implement the present invention,
1 is a frame of the spreader A. The frame 1
A rubber crawler type traveling device 2 is installed at the bottom of the tank, and a fertilizer spreading device a is installed at the top. 3 is
A hopper for accommodating fertilizer of the fertilizer spreading device a,
The hopper 3 has a rectangular box frame shape with both upper and lower sides open. The lower part of the front wall 3b of this hopper 3 has a relatively large opening to form a feeding port 3a. Below the hopper 3 is a conveyor 4 running approximately horizontally.
is stretched so that its conveying direction runs in the front-rear direction toward the outlet 3a. In the present invention, the transport conveyor 4 is divided into front and rear parts, and is composed of a plurality of conveyors 4a and 4b. The transport conveyors 4a and 4b which can be separated are constructed by winding an endless rubber belt with protrusions, which has a width slightly wider than the width of the lower part of the hopper 3, around a drive roller and a floating roller, and tensioning the belt so as to rotate. The distance between the starting end of the front conveyor 4a and the terminal end of the rear conveyor 4b is minimized. A feed roll 5 is installed horizontally above the conveyance end of the front conveyor 4a with a gap e therebetween so as to close the central portion of the feed opening 3a of the hopper 3. The feed roll 5 has a large number of protrusions 5a on the circumferential surface of the cylindrical body.
5a... is planted, and its width is the same as the feedout port 3a.
The width of the road should be approximately equal to the width of the road. Further, the direction of rotation of the feed roll 5 is such that it is forcibly rotated counterclockwise as shown in FIG. 6 is a flat discharge adjustment plate,
The discharge adjustment plate 6 is located slightly inward of the front wall 3b of the hopper 3, and is installed obliquely so that its lower part is slightly inside, and can be adjusted by sliding up and down in the direction of the oblique installation. establish. When the discharge adjusting plate 6 slides downward, its lower part approaches the circumferential trajectory facing the inside (right side in FIG. 2) of the hopper 3 of the feed roll 5, and slides upward. Please keep your distance when you move. The width of the discharge adjustment plate 6 is equal to or larger than the width of the outlet 3a. In the embodiment, a vertical sliding operation method is used to adjust the contact and separation between the discharge adjustment plate 6 and the feed roll 5, but a rotation adjustment operation centered on the upper part of the discharge adjustment plate 6 may also be used. It is. 7 is a guide plate that guides the fertilizer sent up by the feed roll 5 along the circumferential surface of the roll 5 and releases it downward; the guide plate 7 has a curved upper part; It is attached to the lower end of the front wall 3b of the hopper 3. Next, a description will be given of the power transmission lines to each operating section of the fertilizer spreading device a. Reference numeral 8 denotes an engine mounted at the rear of the frame 1, and the output rotation of the engine 8 is transmitted via an intermediate shaft 9 to a power transmission shaft 10 to the fertilizer spreading device a. The rotational power of the power transmission shaft 10 separates the transmission lines of the front and rear conveyors 4a, 4b from each other. That is, the power transmission shaft 10 and the drive shaft 4a1 of the front transport conveyor 4a are wound together for power transmission, and the power transmission shaft 10 and the drive shaft 4b1 of the rear transport conveyor 4b are also wound and transmitted separately. do. A tension clutch device 11 is provided in the winding transmission section between the latter power transmission shaft 10 and the drive shaft 4b1 of the rear conveyor 4b. By turning on and off the tension clutch device 11, the rear conveyor 4a is rotated while the front conveyor 4a is rotating.
Switch b1 between running and stopping. On the other hand, the power transmission shaft 10 and the drive shaft 4a1 of the front conveyor 4a
A transmission shaft 12 is disposed in the winding transmission portion of the feed roll 5, and winding transmission is performed from the transmission shaft 12 to the delivery roll 5. Reference numeral 13 denotes a tension disconnection device that connects and disconnects the winding transmission between the intermediate shaft 9 and the power transmission shaft 10, and is used when each operating part of the fertilizer spreading device a is stopped by disconnecting and operating the tension disconnection device 13. . 14 is a cover that covers the entire circumference of the fuselage.

(Effects of the invention) According to the invention as described above, the amount of feed is determined not only by the amount discharged from the gap e between the conveyor belt and the feed roll, but also by the total amount of both, including the amount discharged by scraping by the feed roll. Since the structure is configured such that it is determined by the amount of fertilizer applied, variations in the set feed amount are significantly reduced and the amount of fertilizer applied is made uniform. Moreover, among the fertilizers sent by the conveyor, the fertilizer in the upper layer above the gap e hits the feed roll and the lump-like fertilizer is reliably loosened by the rotational breaking of the protrusions. By moving the lower part of the discharge adjustment plate toward and away from the feed roll, it is possible to quantitatively adjust the ratio at which the fertilizer raked up by the feed roll is separated into the discharge side and the return side. In conjunction with the amount adjustment by e-adjustment, appropriate and efficient delivery performance can be obtained depending on the condition of the fertilizer, such as the difference in dryness and humidity.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
The figure is a side sectional view of the self-propelled fertilizer spreader, and FIG. 2 is a side sectional view of the main parts of the same, showing the fertilizer dispensing state. Explanation of main symbols in the drawings, 3...Hopper, 3a
...Feeding port, 4...Transportation conveyor, 5...Feeding roll, 5a...Protrusion piece, 6...Discharge adjustment plate.

Claims (1)

[Scope of utility model registration request] A fertilizer spreader has an opening at the bottom on a conveyor on which a wide endless belt is wound so as to run back and forth, and a hopper is installed at the end of the conveyor to form a feedout. A feed-out roll having a large number of protrusions implanted on the circumferential surface of the cylindrical body is horizontally installed at the outlet so that the vertical distance from the conveyance terminal end of the conveyor can be adjusted, and the rotation direction of the roller at the terminal end of the conveyor is A flat discharge adjusting plate is horizontally installed on the unwinding side of the hopper so that the lower part of the unwinding roll can be adjusted toward and away from the circumferential locus of the unwinding roll facing inside the hopper. Feeding device in fertilizer spreader.