JPS589643B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a grain culm conveying device for a combine harvester that changes the posture of the grain culm that has been raised and cut from an almost upright position to an almost horizontally laid down position and delivers it to a feed chain attached to a threshing device. Regarding.

In general, in order to change the attitude of the grain culm from an almost upright position that has been raised and reaped to a horizontally lying position, and to deliver the harvested grain culm to the feed chain of the threshing equipment, in conventional equipment, the stock head part is The ears are transferred by the feed chain and transported smoothly, but the ears are conveyed as the stock head is moved by the feed chain, especially the ears of the threshing device which is not affected by the handling cylinder. At the inlet, the grain lags behind and is fed into the grain receiving port late, causing problems such as being thrown out of the inlet by the handling cylinder, which rotates at a relatively high speed.

The object of the present invention is to solve such problems, and to provide a grain culm conveying device for a combine harvester that can effectively utilize the rigidity of the grain culm to quickly feed the grain tip into a threshing device receiving port. We aim to provide the following.

That is, the grain culm conveyance device for a combine harvester according to the present invention includes the conveyance receiving and guiding tools 17, 17 for receiving and guiding the grain culm along the grain culm conveyance path on substantially the same side as the ear side portion and the stock side portion. At the same time, a pressing tool 10 is provided that presses the other side of the grain culm, which is approximately the central portion in the length direction of the grain culm, and the grain culm being conveyed along the conveyance path is abbreviated against the grain culm rigidity. The structure is configured to convey the grain while deforming it into a square shape, and at the end of the conveyance, the receiving action of the conveyance receiving guide 17 on the ear side portion is released, and the elastic restoring force of the grain culm allows the grain tip to be transferred to the grain culm of the threshing device 6. Reception port 1
It is characterized in that it is configured to be fed toward the feed chain 8 and to maintain the stock head attitude close to the stock head attitude held by the feed chain 20.

In other words, by releasing the receiving and guiding action on the tip side while the grain is deformed into a dogleg shape against the rigidity of the grain,
Due to the elastic restoring force of the grain culm, the grain tip can be rapidly fed toward the grain culm receiving port of the threshing device.

Therefore, it has been possible to eliminate the delay in the grain tip portion at the receiving port of the threshing device, and to avoid occurrence of trouble near the grain culm receiving port.

In addition, when the stock position changes from an almost doglegged position to an almost straight line position due to the elastic restoring force due to the rigidity of the grain culm, the stock position where almost no change in position occurs is
The grain culms are maintained in the same posture as the feed chain, and even with a feeding device that utilizes elastic restoring force, it has become possible to smoothly deliver grain culms to the feed chain.

Embodiments of the present invention will be described in detail below based on illustrative drawings.

A combine harvester 1 as an example of an agricultural machine has a pre-processing section 5 which includes grain culm lifting devices 2, 2 with gentle and steep slopes at the front part of the machine body, a reaping device 3, and a rear reaped grain culm conveying device 4. It is configured to be able to rotate around a pivot point and move up and down relative to the machine body on which a threshing device 6, waste straw processing device (shredder, dropper), etc. are mounted.

The reaped grain culm rear conveyance device 4 represents one embodiment of the grain culm conveyance device of the combine harvester of the present invention, and will be described in detail below.

A clamping rail 8 is attached to the endless chain 7 with protrusions for clamping the stock.
are elastically supported by a rail holder 9 which is attached to the machine frame for attaching the chain 7 with a U-shaped fitting so as to be spaced apart at a constant interval, and a presser 10 is attached to the rail holder 9 to press the middle part of the grain culm. The endless chain 7 with protrusions is configured to be able to swing in the lateral direction of the machine body around the axis X of the chain winding wheel at the conveyance start end.

Reference numeral 11 denotes an operating lever for swing operation (for changing handling depth) provided near the cockpit.

The ear tip locking and conveying device 12 is formed in series following the pulling device 2 on the gentle slope side among the grain culm lifting devices 2, 2.

In other words, the ear tip locking and conveying device 12 that conveys the grain culm tip toward the threshing device 6 is configured in line with the lifting action location.

Reference numeral 13 denotes a guide that prevents the grain culm from separating from the locking and conveying claws 14.

The side wall 16 of the raising case 15 stands up significantly in the area of the ear locking and conveying device 12, and is configured as a conveyance receiving guide tool 17 that supports and guides the ear tip. It ends near the grain receiving port 8 of No. 6.

According to such a configuration, the tip of the grain that is pulled up and cut as the machine advances is connected to the gently inclined pulling device 2.
Immediately after cutting, the stock head section is inherited by the stock head clamping and transporting device 19, which is formed subsequently to the stock head section, and the stock head section is transferred to the stock head clamping conveyance device 19, which is in a state where the stock tip is locked and the stock base is clamped. Then, the grains are transported to the threshing device 6.

In this case, if the length of the harvested grain culm is longer than usual, the lower side of the stock clamping and conveying device 19 is swung toward the outside of the machine around the axis The handling depth is adjusted by changing the location where the material is delivered to the eid chain 20 so that the handling depth is appropriate.

On the other hand, as shown in Fig. 3, the attitude of the grain culm changes from an almost upright position after reaping (see Fig. 3 A), and due to the action of the pressing tool 10 that gradually moves inward toward the inside of the machine toward the lower side of the conveyor, the grain culm becomes rigid. It curves into a dogleg shape.

The degree of curving into a dogleg shape gradually becomes larger toward the lower side of the conveyance, and at the end of conveyance, the receiving action by the ear tip resting guide surface (conveyance guide) 17 on the ear side is released, Due to the rigidity of the grain culm itself, the orientation of the grain culm is rapidly changed in a straight line, and the grain culm is fed into the threshing device receiving port 18 at high speed.

Therefore, when the grain culm is fed to the threshing device 6 in a horizontal position, the stock side does not have the inconvenience that the grain side lags behind when it is transferred by the feed chain 20 and transported at a constant speed. .

The posture of the stock base is held down by the pressing tool 10, and the posture is transferred to the feed chain 20 as it is without changing the posture.

In addition, in order to change the grain culm that has been deformed into an almost dogleg shape to the grain culm posture using elastic restoring force, a posture change adjustment device is provided to adjust the grain culm posture to an appropriate posture for the next grain culm processing. It may be configured as desired.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the grain culm conveying device for a combine harvester according to the present invention, and FIG. 1 is an overall side view of the combine harvester, and FIG.
The figure is a perspective view of the main part, and Figures 3A, 3B and 3C are schematic front views showing the operating state. 6... Threshing device, 7, 17... Transfer receiving guide tool, 10... Pressing tool, 18...
・Grain culm reception port, 20...Feed chain.

Claims (1)

[Claims] 1 A grain culm conveying device of a combine harvester that changes the posture of the grain culms that have been pulled up and reaped from an almost upright position to an almost horizontally laid down position and delivers them to a feed chain 20 attached to a threshing device 6, which A conveyance receiving guide 17 is provided which receives and guides the side portion and the stock side portion on the same side along the grain culm conveyance path. A pressing device 10 for pressing the side portion is provided to convey the grain stem while deforming it into a dogleg shape against the rigidity of the grain stem, and the grain stem is conveyed along the conveyance path, and the grain stalk is conveyed at the end of the conveyance on the ear tip side. The configuration is such that the receiving action of the portion conveyance receiving guide 17 is released and the grain tip is sent toward the grain culm receiving port 18 of the threshing device 6 by the elastic restoring force of the grain culm, and the posture of the stock part is changed to the above-mentioned flap. A grain culm conveying device for a combine harvester, characterized in that the grain culm conveying device for a combine harvester is configured to maintain a grain culm in a posture close to that of the stock held by an eed chain 20.