JPS5825806Y2 - threshing equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a threshing device, and its purpose is to appropriately switch the returnability of recovered second grain to the reprocessing device according to the threshing and sorting results, thereby preventing grain damage such as threshing. Another object of the present invention is to suppress an excessive increase in the threshing load, reduce the loss of grain discharged outside the machine, and perform an effective and efficient threshing sorting process as a whole.

Next, an embodiment of the present invention will be described based on the drawings. A threshing room 1 equipped with a rotary handling cylinder 1A and a swinging sorting plate 2 for swinging and sorting the threshed grains that will fall from this are provided. A gutter-shaped first sorting grain collecting section 6 and a second selecting grain collecting section 7 are provided at the bottom of the wind sorting path 5 for sorting the falling sorted material from the sorting plate 2 with the wind generated by the winnower 4, and ,
A screw 8 that transports the grain in the first grain collecting section 6 to the outside of the machine, a screw 9 that lifts the grain conveyed by this, and a screw 9 that lifts the grain transported by this, and a Discharge cylinder 11 that discharges and supplies into the collection bag 10
The threshing device is constructed as follows.

That is, the second grain collecting section 7 is provided with a screw 12 that transports the collected grains to one side and a thrower 13 that flips up the transported grains, and the throwing up by the thrower 13 also includes a cylinder 14 that guides the grains. The tip of the cylinder 14 is opened at the upper part of the threshing chamber 1 to form a path A1 through which the recovered second grain can be returned into the threshing chamber 1, while the opening 15 is opened on the sorting plate 2 in the middle of the cylinder 14. A path A2 (hereinafter, the above path will be referred to as the first path and this will be referred to as the second path) is provided so that the second recovered grain can be returned to the sorting plate 2.

), the opening 15 is swingable to open and close, and a switching plate 16 is provided which guides the sprung grains only to the tip side of the tube 14 in the closed state and guides the sprung grains only to the mouth 15 side in the open state. By providing this, the two paths A, , A2 can be selectively changed.

In addition, a mechanism 3 for detecting the amount of twig stalks mixed in is provided in the discharge tube 11, which constitutes a part of the flow path of the sorted material containing the most grains after passing through the selection plate 2, and a mechanism 3 is provided for detecting the amount of twigs mixed in. Based on this, a drive mechanism is provided that automatically switches the first path A1 to open when the amount of contamination is large, and automatically switches to open the second path A2 when the amount of contamination is large.

The detection mechanism 3 is swingable in the grain flow direction, and when grains are allowed to pass through, when a twig stalk is caught, the detection mechanism 3 swings downward in the grain flow direction against the force by the weight of the caught twig stalk. A comb-shaped twig stoma sensor 3A is provided, and a switch 3B is provided that turns on when the sensor 3A swings beyond a certain level as the amount of twig stumps caught on the sensor 3A increases above a certain level. It is composed of

The automatic switching drive mechanism includes a solenoid 17 that closes the switching plate 16 by being energized when the switch 3B is turned on.

In addition, when the present invention is applied to the threshing device of a combine harvester, the vehicle speed is automatically reduced based on the detection of an increase in the amount of twigs mixed in, and the structure is configured to reduce the amount of culm supplied to the threshing device. .

In this case, the increase in the amount of threshed grains due to the return of the recovered second grain to the threshing room 1 is offset by the decrease in the amount of grain culms supplied,
Increase in threshing load can be reliably prevented.

Further, in the embodiment, the threshing room 1 with the handling cylinder 1A has been described, but the present invention can be applied to a threshing room 1 equipped with the handling cylinder 1A and the processing cylinder. It may be returned to either the barrel chamber or the processing barrel chamber.

In summary, the threshing device according to the present invention is configured such that the return path A1 for the recovered second grain into the threshing chamber 1 and the return path A2 for the recovered second grain onto the swing selection plate 2 can be selectively changed. A mechanism 3 for detecting the amount of twigs mixed in is installed in the flow path A of the sorted material containing the most grain after passing through the sorting plate 2, and based on the detection result, if the amount of mixed twigs is large, the threshing room 1
The present invention is characterized in that it is configured to automatically switch the reduction path A1 to the interior of the present invention to open and, when the amount of mixture is medium, to open the reduction path A2 to the oscillating sorting plate 2. It has the following advantages.

In other words, when the twig-stem contamination is at its minimum, the recovered second grain is returned to the sorting board to increase the threshing load due to rethreshing of the recovered second grain, resulting in a decrease in the single grain state, and to reduce the number of grains due to excessive threshing. In addition to sufficiently preventing grain damage such as shedding, it is possible to improve work efficiency by shortening the length of the reprocessing process for the recovered second grain.Moreover, when the amount of twig stalks mixed in is large, the recovered second grain can be threshed. By reducing the grains indoors and promoting single grains, the amount of twigs mixed in can be rapidly reduced. Therefore, the second grain reprocessing mode by reducing the grains onto the sorting board as described above can be implemented at an early stage. At the same time, it is possible to improve sorting performance and suppress grain loss due to discharge outside the machine as cut grain.

Moreover, since the reduction path is automatically switched based on the amount of twigs and stalks mixed in, it is reliable and does not require any special switching operation.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the threshing device according to the present invention, with FIG. 1 being a schematic longitudinal sectional front view of the whole, FIG. 2 being a partially cutaway side view of the whole, and FIG. 3 being an enlarged perspective view of the main parts. It is. 1... Threshing room, 2... Rocking sorting plate, A
1. A2...Reduction path, 3...Detection mechanism.

Claims (1)

[Scope of utility model registration request] The return path A1 for the second recovered grain into the threshing chamber 1 and the return path A2 for the recovered grain onto the oscillating sorting plate 2 are configured to be selectively interchangeable, and the first grain after passing through the oscillating sorting plate 2 is A mechanism 3 for detecting the amount of twig stalks mixed in is provided in the flow path A of the sorted material, and based on the detection result, when the amount of mixed twigs is large, the return path A1 to the threshing chamber 1 is opened. , and is configured to automatically switch the return path A2 onto the oscillating sorting plate 2 to open when mixed grains are placed.