JPH051239Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a handling tooth in a threshing machine, particularly a threshing machine for a full-feed type axial flow combine harvester.

(Prior art) In conventional full-feed type axial flow combine harvesters, grain is threshed using a screw-type handling drum.

In order to facilitate the threshing process, handling teeth are fixed to the outer periphery of the spiral of the handling barrel.

Further, a device in which an L-shaped pin is provided on the spiral of the handling barrel and the L-shaped pin is rotated to freely adjust the angle of the tip of the pin in plan view with respect to the spiral is described in U.S. Pat. No. 4,313,449. .

(Problem to be solved by the invention) If the handling teeth arranged on the outer periphery of the spiral are fixed as in the former case, the peripheral speed of the tooth tips is high and they are constantly in contact with the grains, resulting in rapid wear and damage to the receiving net. If proper clearance is not maintained, damaged grains and unhandled grains may occur.

Further, in the pin disclosed in US Pat. No. 4,313,449, the pin is L-shaped, and the grain culm easily gets caught on the tip, which obstructs the flow of the grain culm. Further, no consideration is given to pin wear.

(Means for solving the problem) Therefore, the technical problem of this project is to obtain a threshing machine that does not obstruct the flow of grain culms in a full-feed type axial flow combine and has handling teeth that can cope with wear. The technical means of the present invention to solve this technical problem is to insert the tightening bolt of the handle tooth mounting bracket into the elongated hole for adjusting the handle tooth protrusion of the bracket so that it can be attached to the spiraler. It is composed of

(Example) First, a conventional full-feed type axial flow combine harvester will be explained based on FIG.

The crops are raked in by the raking reel 1 and cut by the cutting blade 2, and the cut crops are conveyed from the raking auger 3 to the handling room 6 by the chain conveyor 5 of the feeder house 4, and then transferred to the screw type handling cylinder 7, i.e. The grain is threshed using a handling barrel with a spiral.

The threshed grains fall from the receiving net 8 onto the oscillating sorting board 9 and are sorted by the blower fan 10 and the oscillating sorting board 9.

During this sorting process, grains and fine straw waste leak downward from the oscillating sorter, and only long straw is carried toward the dust outlet 11.

The leakage materials including grains that have fallen from the sorting board are subjected to a sorting wind by a blower fan 12 like a winnowing machine, and the grains fall into the first gutter 13 and the second grains fall into the second gutter 14.
The grains that have fallen into the first gutter 13 are carried to the paddy tank by a grain frying conveyor 15, and the second grains are returned to the sorting board 9 through a thrower tube 16.

28 is a crawler equipped with a thresher, 17
indicates the control section.

Further, the discharge culm portion of the handling chamber is composed of a discharge vane 18 at the rear end of the handling cylinder and a casing 19.

In the above-mentioned full-feed type axial flow combine, the conventional one in which handling teeth are provided on the peripheral edge of the spiral is a fixed type.

That is, in FIGS. 3 to 5, 7a is a spiral, and the handling teeth 20 are attached to the mounting bracket 21 at an angle of θ.
and is attached to the spiral 7a with a tightening bolt 22.

Conventional handling teeth placed around the outer periphery of the spiral facilitate the threshing process, but the tooth tip has a high circumferential speed and is in constant contact with the grain, so it wears out quickly.
If this handling tooth does not secure an appropriate gap with the receiving net, it will lead to damaged grains and unhandled grains.

Therefore, as shown in Fig. 5, an elongated hole 27 is provided in the mounting bracket 21 of the handling tooth 20g, and using this elongated hole 27, the tightening bolt 2 can be adjusted vertically to freely adjust the handling tooth 20g.
2 to the spiral 7a, and when the handling teeth wear out, the tightening bolt 22 can be loosened and the mounting bracket 21 can be slid upward so that the tip of the handling teeth 20g protrudes from the outer periphery of the spiral 7a. The attached bolt 22 is attached to the mounting bracket 21
Slide it into the long hole groove 27 of the mounting bracket 2.
1 is one that can move upwards.

The product of the present invention not only has a longer service life, but also has a vertically adjustable type that allows you to select the appropriate gap between the net and the net depending on the crop, which reduces unnecessary horsepower consumption and prevents damage.

(Effect of the invention) When the tips of the handling teeth provided on the outer periphery of the spiral of the present invention wear out, the tightening bolt of the handling tooth mounting bracket is loosened, and the handling teeth are protruded toward the outer circumference of the spiral using the elongated hole of the bracket. This feature not only extends the life of the handling teeth, but also allows you to select the appropriate gap between the net and the net depending on the crop as it is vertically adjustable, reducing wasted horsepower consumption and preventing damage. There is. Moreover, in the full-feed type axial flow combine, the handling teeth are straight and follow the spiral, so they do not impede the flow of grain culms and do not affect threshing efficiency.

[Brief explanation of the drawing]

Figure 1 is a front view of the proposed handling tooth, Figure 2 is an overall view of a conventional full-feed type combine harvester, and Figures 3, 4, and 5 are a front view, cut side view, and slope view showing conventional handling teeth. . 1... Scraping reel, 2... Cutting blade, 3... Scraping auger, 4... Feeder house, 5... Chain conveyor, 6... Handling room, 7... Handling barrel, 7a... Spiller, 20, 20g...handling teeth, 21...mounting bracket, 22...tightening bolt, 27...elongated hole.

Claims (1)

[Scope of utility model registration request] 1. A handling tooth for a threshing machine, characterized in that the tightening bolt of the handling tooth mounting bracket is inserted into an elongated hole for adjusting the degree of protrusion of the handling tooth of the bracket so that the bracket can be attached to a spiraler.