JPH0541644Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is based on a method in which a screw blade is wrapped around the circumferential surface of a handling barrel that is mounted on a storage shaft in a handling chamber, and handling teeth are arranged on the screw blade. The present invention relates to a threshing device.

(B) Prior art As for the threshing device constructed as above, the conventional construction is as disclosed in, for example, Japanese Utility Model Application No. 60-55330 or No. 61-83841. Each of the handling teeth is individually planted on the periphery of the screw wing, and therefore the characteristics depend on the variety, i.e., when threshing is flexible and strong, or when threshing fallen grain culms, etc. In this case, the culm twists or becomes lumpy, placing a large load on the handling teeth and screw blades, which causes the screw blades to become deformed.

(c) Problems to be solved by the invention As described above, in the conventional type, each of the handling teeth is installed independently on the peripheral edge of the screw blade, which places a particular load on the screw blade. Therefore, the present invention does not require any additional reinforcing means for the screw blade, but instead uses the handling tooth itself to serve as reinforcement, thereby simplifying the structure and improving the handling tooth. It was devised for the purpose of making it easy to attach and detach.

(d) Means for Solving the Problems Therefore, the present invention provides a threshing device in which a screw blade is wrapped around the circumferential surface of a handling barrel that is stored in a handling chamber, and handling teeth are arranged on the screw blade. Therefore, the following measures were taken.

That is, the handling teeth are folded up in the same direction on both sides of the plate to form two trapezoidal folded parts, and the two folded parts are placed on adjacent opposing surfaces of the screw blades. They are each fastened together and the bottom part is tightened to the circumferential surface of the handling barrel, and the tip of the folded part protrudes an appropriate amount from the circumferential edge of the screw blade, and is provided at several locations between each winding of the screw blade. be.

(E) Effect With this structure, the adjacent opposing surfaces of the screw blades are connected by the handling teeth provided at several locations that are tightened on the handling barrel during one winding of the screw blade, making the entire screw blade strong. The grain culms supplied into the handling chamber are mainly transported to the end side in the axial direction of the handling barrel by the screw blades, and are threshed by the threshing and rubbing action of the handling teeth. be.

(F) Examples The present invention will be specifically described below with reference to the drawings.

Figure 4 shows the device according to the present invention before it is installed, and since this threshing device itself is configured as a combine harvester, we will first explain the overall outline using this figure. .

The grain culms in a standing state are cut by the cutting blade 1, and the cut grain culms are sent to the rear side and transported laterally by the platform auger 2 and the platform bottom plate 3 to the chain conveyor 5 in the feeder house 4. Handling room 6
The grains are transported to the starting end side and sent to the terminal end side by a handling cylinder 8 with screw blades 7 wrapped around the circumference, where they are subjected to a threshing action. The dust leaks from the receiving net 9 and is supplied to the swing sorting section a below, and the large dust that does not leak out is discharged to the outside of the machine by a dust exhaust fan 10 at the terminal end.

In addition, small grains and dust supplied to the oscillating sorting section a are removed by the oscillating motion and the blower fan 1.
1 and blows through the oscillating sorting section a from below, the first item falls into the first item takeout gutter 12 and the second item falls into the second item takeout gutter 13. After lifting, the first grain is stored in a paddy tank (not shown), and the second grain is transferred to the upper grain cylinder 14 and returned to the swing sorting section a to be re-sorted. ing.

The oscillating sorting section a is given an oscillating motion in the axial direction of the handling cylinder 8, and the feed pan 15, chaf sheave 16, and stroke rack 1 are moved from the start end to the end end.
7 are successively constructed, and a grain sheave 18 is provided below the chaff sheave 16, and these are integrally constructed.

Further, a cross-flow fan 19 is provided between the receiving net 9 and the swinging sorting section a on the front side of the starting end thereof, and blows air backward over the swinging sorting section a.

Next, to describe the main part of the present invention, the threshing device of the combine harvester constructed in this way has handling teeth A implanted in the screw blade 7 that is wound around the circumferential surface of the handling barrel 8. However, as shown in Figures 1 and 3, the handling tooth A is made by bending both sides of a rectangular plate diagonally upward in the same direction, and then folding it further upward to form two sides on both sides. Folding part 20, 21
20, 2.
1 is formed into a trapezoidal shape when viewed from the side as shown in FIG. The distance M from the surface is approximately the same.

The handling teeth A formed in this way are fitted between adjacent opposing surfaces of the screw blades 7, and the folded portions 2 on both sides are inserted.
0 and 21 are fastened to the opposing surfaces using fasteners 22 and 22, and the bottom portion 23 of the handling tooth A is fixed to the circumferential surface of the handling barrel 8 using a fastener 24.

The handling teeth A are thus arranged in a staggered manner on the screw blade 7, as shown in FIGS. The tip of the screw blade 7 is connected to the peripheral edge 7a of the screw blade 7.
Treat the adjacent opposing surfaces while protruding by a more appropriate amount Teeth A
This is done by connecting them.

Therefore, the screw blade 7 is strongly reinforced by the handling tooth A, and the grain culm carried into the handling chamber 6 is handled by the handling tooth A.
This works together with the threshing process to transfer the grain to the end of the grain.

(g) Effects of the invention As detailed above, the present invention is constructed by wrapping a screw blade around the circumferential surface of a handling barrel that is mounted on a storage shaft in a handling chamber, and disposing handling teeth on the screw blade. In the threshing device, the handling teeth themselves are shaped such that both sides of the plate are folded up in the same direction to form two trapezoidal folding parts, and the two folding parts are arranged opposite to each other of the screw blades. The screw blade is fastened to each surface and the bottom part is tightened to the circumferential surface of the handling barrel, and the tip of the folded part protrudes an appropriate amount from the periphery of the screw blade, and is provided at several locations between each winding of the screw blade. Therefore, the folded tops formed on both sides of the handling teeth are fastened to the adjacent opposing surfaces of the screw blades, and the handling teeth, whose bottom portions are fastened to the flat surfaces of the handling barrel, are connected to one side of the screw blade. Since the screw blades are provided in several places between the windings, the adjacent opposing surfaces of the screw blades are well connected at appropriate intervals and are strongly reinforced by the handling teeth, making it possible to create a supple and strong grain culm or When threshing a fallen grain culm, etc., it is possible to perform the threshing process in cooperation with the handling teeth without causing deformation even if a large load is applied. Since the screw blades are reinforced, there is no need to provide a separate reinforcing means, making the structure simple, and the handling teeth only need to be fastened or tightened to the screw blades and the peripheral surface of the handling body, so they can be easily attached and removed. Teeth can be easily replaced.

[Brief explanation of the drawing]

The drawings show an example of the device according to the present invention; FIG. 1 is an enlarged view of the main parts thereof, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1, and FIG.
FIG. 4 is a schematic side view of the entire combine harvester before the device of the present invention is applied thereto. 6... Handling chamber, 8... Handling barrel, 7... Screw wing, 7a... Periphery, A... Handling tooth, 20... Folding top, 21... Folding top, 23... Bottom.

Claims (1)

[Scope of utility model registration request] In a threshing device configured by winding a screw blade 7 around the circumferential surface of a handling barrel 8 stored in a storage shaft in a handling chamber 6, and arranging a handling tooth A on the screw blade 7, the handling tooth A is
The plate itself is folded up in the same direction on both sides to form two trapezoidal folded parts 20 and 21, and the two folded parts 20 and 21 are placed next to each other on the screw blade 7. The bottom part 23 is fastened to the circumferential surface of the handling cylinder 8, and the folding part 2 is fastened to the opposing surfaces.
This threshing device is characterized in that tip portions of screw blades 7, 0 and 21 are protruded by an appropriate amount from the peripheral edge 7a of the screw blade 7, and are provided at several locations between one winding of the screw blade 7.