JPS6317328Y2 - - Google Patents

Description

[Detailed description of the invention] Conventional threshers for combine harvesters thresh raw cereals, which generates large amounts of long straw, cut straw, straw dust, and broken ears in the threshing chamber from the dried stalks. This puts an overload on the threshing drum and reduces threshing performance, so a dust outlet about 1/3 the width of the threshing chamber is provided between the receiving net and the side panel on the stalk discharge port side to discharge the long straw, etc. from the threshing chamber as quickly as possible.

However, in the conventional method, as the width of the receiving net is narrowed, the processing capacity for long straw, ear cuts, stems, etc. decreases, and the sorting performance of discharging them directly onto the swinging shelf decreases, so the sorting device must be made larger. First, it was not possible to solve the problem of making the aircraft smaller and lighter in order to reduce costs and improve maneuverability and workability in wet fields.

The present invention aims to provide a threshing machine that can improve the threshing capacity without increasing the size of the handling room, sorting section, etc. The purpose of the present invention is to provide a threshing machine that can improve the threshing capacity without increasing the size of the handling room, sorting section, etc. In a top-handling type threshing machine, the space between the receiving net and the end of the culm is formed into a dust inlet for discharging long straw, ear scraps, etc. generated in the handling room onto a swinging shelf. is inclined so as to be deviated in the straw discharge direction, and the end portion of the receiving net on the discharge culm side is extended toward the discharge culm side in accordance with the amount of deviation of the side plate. be.

The embodiment shown in the drawings will be explained below.1
is a handling barrel that is mounted on a shaft between both side plates 3a and 3b of the handling chamber 2. 4 and a receiving net 6 extending over the opposite side.

And, the side plate 3b on the side of the culm opening 8 of the handling room 2
In this case, the upper edge a and the side edge b on the side where the tips of the straw are discharged are in the same position as in the conventional one and form a substantially straight line, but when viewed from the axial direction of the handling barrel shaft 1a. From the point C where the lower edge on the back side of the discharge culm opening 8 intersects with the outer circumferential surface of the handling barrel 1 (see Figure 3), extend to the lower end d on the handling opening 4 side while bypassing the area close to the handling barrel axis 1a. As shown in FIGS. 1 and 2, the lower part gradually projects in the straw discharge direction with an arcuate line as the ridge line e. That is, the horizontal cross section of the protrusion A is formed in a triangular shape with the base being the line connecting the curve f and the side edge b in FIG. 1 and the ridge line e being the apex.

In addition, the said cross section may be formed into an arc shape with the part of the ridge line e that most protrudes in the straw discharging direction as the top, and gradually protrudes in the straw discharging direction as it reaches the lower part.

Further, the end portion of the receiving net 6 on the side of the discharge culm 8 follows the amount of protrusion of the side plate 3b, that is, the amount of deviation.
The lower part and the back side between the end of the receiving net 6 on the discharge culm 8 side and the side plate 3b are configured as a dust inlet 9, and the width H of the ridge line e at the lower end is the same as that of the conventional one. Since the width is almost the same as the width of the dust inlet of the
The distance H' between the part and the end of the receiving net 6 from the top to the side edge b is approximately 1/2 of the width H, and as a result, the handling cylinder 1 is wider than the conventional one due to the receiving net 6. Approximately 1/2
Only H is covered widely.

Reference numeral 10 denotes a swinging shelf constructed from below the receiving net 6 and the dust inlet 9 to the dust sorting chamber 11, and includes a transfer plate 12, a sorting net 14 facing above the receiving gutter 13,
It is composed of a stroke rack 15 attached to the upper part, a stroke rack 17 facing above the second receiving gutter 16, etc., and a separation air path is formed between the pressure wind turbine 18 and the suction wind turbine 19.

In addition, in the drawing, 20 is the second thrower, 21 is the second reduction passage, and 22 is the stab grain and stroke rack 17.
This is a return transfer plate that transfers the third material leaked from the third receiving gutter 16 to the second receiving gutter 16.

In the combine harvester equipped with the above-mentioned above-mentioned threshing device, the stock base of the harvested grain culm is equipped with feed chain 23.
and the front end of the pinning rail 23', and the ear side is inserted into the handling chamber 2 through the supply port 24 and threshed by the handling cylinder 1.

At that time, the threshing process is carried out on the top side of the handling barrel 1 and on the top plate 2'.
It is the same as the conventional method because it is carried out between After being carried around in the time handling cylinder 1 for processing, it falls from the dust inlet 9 onto a swinging shelf 10, and is sorted while being transported by the swinging shelf 10.

In addition, since the conventional dust inlet had the same width, more dust was discharged on the side opposite to the handling port 4, but if the handling port side is made wider as in this example, the swinging shelf 10
is discharged almost uniformly in the width direction.

As mentioned above, the present invention uses a swinging shelf to collect long straw, cut ears, etc. generated in the handling chamber between the side plate on the side of the culm and the end of the receiving net installed around the handling barrel on the side of the culm. In an upper-handling type threshing machine having a dust exhaust port for discharging upward, the side of the side plate on which the handling cylinder rotates downward is inclined so that the lower part is deviated in the straw discharge direction; The end on the mouth side follows the deviation of the side plate within the range where the outer peripheral surface of the handling cylinder faces the dust inlet and extends toward the discharge culm, increasing the width of the handling chamber and the length of the handling cylinder. Even if the receiving net is extended, the ability to process long straw, ear cuts, branches, etc. generated in the handling room can be increased, and dust is sent at the end of the handling room on the side where the handling cylinder rotates downward. A part of the waste discharged from the mouth is forcibly ejected by the centrifugal force of the processing teeth installed on the outer periphery of the handling cylinder, so that it faces the outer peripheral surface of the handling cylinder at the dust outlet. The dust that goes to the areas where the grain is not being washed is also dragged by the forcibly thrown and released dust and is smoothly discharged, resulting in high-efficiency threshing or threshing of wet grain culms, which generates a lot of dust. Good threshing and sorting can be performed while reducing the load on the handling barrel.

[Brief explanation of drawings]

Figure 1 is a plan view of the top-handling threshing machine partially cut away in the horizontal direction, Figure 2 is a cross-sectional view taken along line A-A in Figure 1, Figure 3 is a cross-sectional view taken along line B-B in Figure 2, and Figure 3 is a cross-sectional view taken along line B-B in Figure 2. FIG. 4 is a perspective view of the main parts, and FIG. 5 is a sectional view of the conventional example. 2... handling room, 3a, 3b... side plate, 6... receiving net, 9... dust inlet, 10... rocking shelf.

Claims (1)

[Scope of utility model registration request] A dust outlet is installed between the side plate on the exhaust culm side and the end of the receiving net installed around the handling barrel on the exhaust culm side to discharge long straw, ear fragments, etc. generated in the handling chamber onto a swinging shelf. In the above-handling type threshing machine formed in A threshing machine characterized in that the outer circumferential surface of the barrel extends toward the discharge culm in accordance with the amount of deviation of the side plate within the range facing the dust inlet.