JP2570173Y2 - Grain conveyor - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, the grain (1st grain) sorted and recovered by a threshing apparatus is stored in a grain tank, a hopper for bagging, etc., or a grain tank. The present invention relates to a screw-type grain transport device used for an unloader that unloads grains.

[0002]

2. Description of the Related Art As a lifting device of a threshing device, which is an example of the above-mentioned grain conveying device, as disclosed in Japanese Patent Application Laid-Open No. 1-124321, for example, a horizontal screw conveyor and a vertical screw screw conveyor are used. The screw shafts of the two screw conveyors are connected to each other via a bevel gear mechanism provided on the corner case, and the screw shafts of the screw conveyors are connected to the inner corners of the corner case. It is known that an inclined passage for guiding grains is formed at a lower end, and a discharge blade having a diameter larger than an outer diameter of the screw blade is provided at an end of a screw shaft in the laterally-feeding screw conveyor. In this way, the grain conveyor with the structure in which the screw shaft of the horizontal feed screw conveyor and the screw shaft of the vertical feed screw conveyor are directly linked to the bevel gear in the corner case, the bevel gear mechanism and the chain transmission outside the corner case It has the advantage that the interlocking structure is simpler and more compact than the conventional configuration that interlocks and connects via a mechanism.However, a bevel gear interlocking section is provided at the intersection between the grain horizontal feed path and the vertical feed path. Due to the existence, the screw blades of both screw conveyors cannot be brought close enough, and there is a disadvantage that the grain delivery performance from the horizontal feed path to the vertical feed path is reduced. Therefore, as shown in the above publication, a discharge blade having a diameter larger than the outer diameter of the screw blade is provided at the end of the screw shaft in the horizontal screw conveyor, and the grain reaching the terminal of the horizontal feed path is scooped by the discharge blade. By forcing it into the lower end of the vertical feed path and releasing it,
A device has been devised to improve the grain transfer performance from the horizontal feed route to the vertical feed route.

[0003]

[Problems to be solved by the invention] By the way, in recent years, the performance of the combine has been enhanced, and it is possible to harvest early in the morning when the morning dew falls and harvest immediately after the rain. Opportunities are increasing, and grains harvested under such adverse conditions are difficult to transport, and crushed grains and mixed mud are more likely to adhere and accumulate on the transport path. Even in the transfer device, clogging easily occurs in the corner case. In particular, the conveyed material discharged from the discharge blade directly hits the inner surface of the inclined passage formed at the inner corner of the corner case to guide the grains from the end of the horizontal screw screw conveyor to the lower end of the vertical screw screw conveyor. Therefore, adhesion and deposition are likely to occur here, and adhesion and deposition are likely to occur around the bearing bosses that support both screw shafts. For continuous operation, it is important to enhance the transfer performance of the grain transfer device. The present invention has been made in view of such circumstances, and has as its object to enhance the grain transfer performance in a corner case in the grain transport device having the above-described configuration.

[0004]

In order to achieve the above-mentioned object, a grain conveying device according to the present invention connects a horizontal screw conveyor and a vertical screw screw conveyor through a corner case and connects both screws. The screw shaft of the conveyor is interlocked and connected via a bevel gear mechanism provided in the corner case, and an inclined passage is formed at the inner corner of the corner case to guide grains from the end of the horizontal screw screw conveyor to the lower end of the vertical screw screw conveyor. In the grain conveying device, the end of the screw shaft of the laterally-feeding screw conveyor has an outer edge along the inner surface in a state larger in diameter than the outer diameter of the screw blade and close to the inner surface of the inclined passage. Along with providing a discharge blade, at the lower end of the screw blade in the vertical feed screw conveyor, A swirling blade that rotates along the outer periphery of a bearing boss that supports the lower end of the screw shaft is continuously provided, and the rotational locus of the discharge blade and the rotational locus of the swirling blade as viewed in the axial direction of the transverse screw conveyor. Are characterized by overlapping.

[0005]

According to the above construction, the grains fed laterally by the horizontal screw conveyor are discharged upward by the discharge action of the large-diameter discharge blade at the end of the horizontal feed path,
It is guided to the lower end of the vertical feed screw conveyor and is discharged along the vertical feed path. In this case, the grains discharged by the discharge blades are guided by the inner surface of the inclined passage at the inner corner of the corner case and guided to the lower end of the vertical feed screw conveyor, and the crushed grains and mud on the inner surface of the inclined passage are conveyed. Although the adhesion is likely to occur, since the outer edge shape of the discharge blade is along the inner surface in a state close to the inner surface of the inclined passage, the crushed grains and mud that are about to adhere are immediately scraped and removed by the discharge blade. You. In addition, crushed grains and mud that accumulate around the bearing boss that supports the lower end of the screw shaft of the vertical feed screw conveyor are also scraped and removed by the scraping blade that rotates integrally with the vertical feed screw blade, and the grain stays. It is smoothly transported without being.

[0006]

[Effect of the invention] As described above, according to the invention,
Even grains with a lot of moisture or grains mixed with mud can be smoothly and continuously transported without causing stagnation or accumulation in the corner case.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a case where the grain transport device according to the present invention is applied to a grain lifting device for supplying grains collected by a threshing device to a grain tank or a hopper for packing bags. Is shown. This grain lifting device includes a horizontal screw screw conveyor 1 disposed at a lower portion of a sorting unit in a threshing device D, a vertical screw screw conveyor 2 extending upward from the end thereof, and a corner case for connecting the two. 3 The horizontal screw conveyor 1 is configured such that a pair of discharge blades 6 formed with a diameter sufficiently larger than the screw blades 4 is attached to the terminal end of a screw shaft 5 which is provided with the screw blades 4 and is horizontally mounted. . The vertical feed screw conveyor 2 inserts a screw shaft 8 provided with a screw blade 7 into a lifting tube 9, and scrapes the blade 1 from the lower end of the screw blade 7.
0 is continuously provided. The corner case 3 is an inner case portion 3a that is inserted into the end portion of the horizontal screw screw conveyor 1 and connected to the threshing device D.
And an outer case portion 3b connected and supporting the lifting cylinder 9 of the vertical screw screw conveyor 2, and the two screw shafts 5, 8 are connected via a bevel gear mechanism 11 mounted on the outer case portion 3b. The power is transmitted from the laterally feeding screw shaft 5 to the vertically feeding screw shaft 8 in an interlocking manner. The bevel gear mechanism 11 includes a relay shaft 12 inserted and connected to a spline boss 5a provided at the end of the lateral screw shaft 5, a bevel gear 13 fixed to the relay shaft 12, and a screw shaft to the vertical screw screw shaft 8. The outer end 12a of the relay shaft 12 projects from the corner case 3 as a shaft for taking out power to a car wash pump or the like. The shape of the outer edge of the discharge blade 6 along the inner surface in a state close to the inner surface of the inclined passage C formed at the inner corner of the corner case 3 so as to connect the horizontal feed path A and the vertical feed path B. And the base shape of the discharge blade 6 is configured to enter the outer peripheral portion of the bearing boss 3c provided on the outer case portion 3b so as to support the inner end of the relay shaft 12. In addition, the scraping blade 1
0 is configured so as to enter the outer peripheral portion of the bearing boss 3d provided on the outer case portion 3b so as to support the vertical feed screw shaft 8, and when viewed from the axial center direction of the lateral feed screw conveyor 1, The rotation trajectory of the discharge blade 6 and the rotation trajectory of the swirling blade 10 are configured to overlap.

[0008] In the claims of the utility model registration, reference numerals are written for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a connection portion between a horizontal feed screw conveyor and a vertical feed screw conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal feed screw conveyor 2 Vertical feed screw conveyor 3 Corner case 4 Screw blade 5 Screw shaft 6 Discharge blade 7 Screw blade 8 Screw shaft 10 Screw blade 11 Bevel gear mechanism

Claims (1)

(57) [Scope of request for utility model registration] 1. A horizontal screw screw conveyor (1) and a vertical screw screw conveyor (2) in a corner case (3).
And the screw shafts (5) and (8) of both screw conveyors (1) and (2) are interlocked and connected via a bevel gear mechanism (11) provided in the corner case (3). A grain conveying device, wherein an inclined passage (C) for guiding kernels is formed at an inner corner of the corner case (3) from the end of the horizontal screw screw conveyor (1) to the lower end of the vertical screw screw conveyor (2), At the end of the screw shaft (5) in the laterally feeding screw conveyor (1) , the inner surface of the screw shaft (5) having a diameter larger than the outer diameter of the screw blade (4) and being close to the inner surface of the inclined passage (C).
And a bearing boss (3d) for supporting a lower end of a screw shaft (8) at a lower end of the screw blade (7) in the vertical screw screw conveyor (2). A plurality of swirling blades (10) rotating along the outer periphery of the blade, and the discharge blades (6) as viewed in the axial direction of the transverse screw conveyor (1).
A grain conveying device wherein the rotation locus of the blade and the rotation locus of the swirling blade (10) are overlapped.