JPS6227073Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grain culm conveying and feeding device in a combine harvester.

In other words, in a combine harvester that is configured so that the stalks are successively received and transported from the cutting blade side by multiple conveying chains and supplied to the feed chain of the threshing section, if the amount of stalks cut and transported is small, they will be pulled out in the threshing section; however, when the amount is so small, the feed rate can be slowed down midway through the transport so that the amount can be increased, and the stalks can be supplied well without being pulled out in the threshing section, thereby providing a system that can be implemented in an advantageous manner.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the combine harvester, in which a feed chain 4 is mounted on a stand 8 supported by crawlers 7.
It is equipped with a threshing section B similar to the conventional type, which is equipped with a threshing rod 9, etc., and a reaping section A installed in front of the threshing section B is rotated about a rear fulcrum O by a hydraulic cylinder 10 and can be moved up and down. A lifting case 12 is obliquely installed behind the grass divider plate 11 which is movably installed at the front part of the reaping section A.
An upper conveying body 13 is configured to extend rearward from above the cutting blade 1 which is horizontally installed at the rear lower part of the cutting blade 1.

Further, above the cutting blade 1, both raking wheels 14a, 14 are provided.
b are arranged side by side in an interlocking manner, and the conveying chain 2 is arranged in an inclined manner from below to the rear of one of the scraping wheels 14b,
A clamping rod 5 corresponding to the conveying chain 2 is extended from below to the rear of the other scraping wheel 14a, and both support rods 15, 15 extending in the orthogonal direction from the clamping rod 5 are connected to the support frame. The supporting frame body 16 is inserted into the support frame body 16.
The clamping rod 5 is installed so that it can be pressed against the conveyance chain 2 side by the bullets 17, 17 interposed therein, and the conveyance chain 3 is extended from above the terminal end of the conveyance chain 2 to the feed chain 4 side of the threshing section B. In addition, a clamping rod 19 installed on the support frame 18 is arranged opposite to the conveying chain 3.

Drive wheel 20 at one end side of the conveyance chain 3
A transmission part 6 is installed below, and the transmission part 6 is constructed by mounting a coaxial split pulley 6a below the drive wheel 20, and the split pulley 6a is engaged by the belt 21 biting into the split pulley 6a. The drive pulley 23 on the transmission case 22 side is formed to be expandable and narrow so that the diameter changes.
from the split pulley 6a and the intermediate pulley 24.
A tension pulley 2 is connected to the belt 21 between both pulleys 6a and 24.
5 is axially mounted on the tip of an arm 27 whose central portion is pivotally supported on the projecting piece 26 of the support frame 16, and a pin 28 extending from the tip of one of the support rods 17 is attached to the other end of the arm 27. Engages with the elongated hole 29 and supports the support rod 17
The arm 27 is rotated by the movement of the tension pulley 25, so that the tension pulley 25 can come into strong or loose contact with the belt 21.

However, when working with a combine harvester, both raking wheels
The tip side of the grain culm, which is raked by 4a and 14b and harvested by the cutting blade 1, is transferred to the threshing section B by the upper conveyor 13.
The culm end side of the grain culm is pinched by the clamping rod 5 and the conveying chain 2 and conveyed to the rear,
The grain is passed from the conveyor chain 2 to the rear conveyor chain 3, and is conveyed by being held between the conveyor chain 3 and the clamping rod 19. From the end of the conveyor chain 3, the grain is conveyed to the feed chain 4 and sent to the threshing section B. Supplied.

In that case, if the amount of grain culms to be conveyed by being pinched by the conveying chain 2 and the lever 5 is small and the layer is thin,
Since the clamping rod 5 does not move outward much, the tension pulley 25 does not press the belt 21 much, so the belt 21 does not bite into the split pulley 6a and the speed of the conveying chain 3 is slow. The conveying chain 3, which rotates slower than the conveying chain 2, is in a state where it can convey a large amount of grain culms, and can supply the grain culms to the feed chain 4 in a thick layer.

Conversely, when the amount of grain culms to be conveyed by being held in the conveyor chain 2 and the ramming rod 5 is large and the layer becomes thick, the ramming rod 5 moves outward and the arm 27 rotates. The tension pulley 25 comes into pressure contact with the belt 21, the belt 21 bites into the split pulley 6a, and the engagement diameter of the belt 21 becomes smaller.Then, the speed of the conveyance chain 3 increases, and the conveyance chain rotates faster than the conveyance chain 2. 3 is in a state where it can be transported with a slightly reduced amount of grain culms, and it can be supplied to the feed chain 4 in a layer that does not cause pulling out.

In this way, the present invention provides a combine harvester that is installed so that grain culms are successively conveyed from the cutting blade side through a plurality of conveying chains and then supplied to the feed chain of the threshing section. It is constructed so that the drive transmission part of the rear conveyance chain can be freely interlocked with each other so that the speed of the drive transmission part of the conveyance chain on the rear side can be changed by means of a clamping rod that changes depending on the amount of grain culms conveyed by the conveyance chain.
When grain culms are transported by the transport chain between the cutting blade side and the feed chain of the threshing section, the speed of the rear transport chain can be increased or decreased depending on the amount of transport by the front transport chain. As a result, while adjusting the amount of conveyance between the front and rear conveyor chains, it is possible to supply the appropriate amount to the feed chain of the threshing section without causing any pull-out, and the feed chain on the cutting blade side and the threshing section. It has a simple structure that allows for good adjustment of the amount of supply to the feed chain by changing the speed of the rear part relative to the front part of the conveying chain, without having to adjust the sides or install a separate detection device. .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the combine harvester, FIG. 2 is a part of FIG. 1, FIG. 3 is a top view of the main part, and FIG. 5 shows a part of FIG. 3, and FIGS. 6 and 7 show a part of FIG. 3, respectively. 1... Cutting blade, 2, 3... Conveyance chain, B... Threshing section, 4... Feed chain, 5... Pinch rod, 6
...Transmission part.

Claims (1)

[Scope of utility model registration request] In a combine that is installed and configured so that grain culms are successively transferred from the cutting blade side through a plurality of transfer chains and supplied to a feed chain of a threshing section,
It is characterized by being configured so that the drive transmission part of the rear conveyance chain can be freely interlocked with each other so that the speed of the drive transmission part of the rear conveyance chain can be changed by means of a clamping rod that changes depending on the amount of grain culms conveyed by the front conveyance chain on the cutting blade side. This is a conveying and feeding device for grain culms.