JPH0372244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a combine harvester equipped with an auger that brings the harvested grain culm in an upright position to the left and right center side of the reaping section, and a device that transports the grain culm from the auger in a tilted position facing forward and backward. Regarding.

In the combine harvester mentioned above, if the circumferential speed of the auger, which is formed to have a large diameter, becomes too high, the auger's rotational speed is restricted because more grain will be shed due to contact between the spiral blade of the auger and the harvested grain culm. Conventionally, the feed rate of grain culms by an auger is set to a predetermined value by setting a large lead angle of a spiral blade.

However, when the lead angle is increased, the probability that the reaped grain culm, which is in an upright position just in front of the auger, will be held in position by sliding contact with the circumferential surface of the spiral blade increases, and its fall into the auger's rotational trajectory will be inhibited. In other words, there was a problem in that the biting effect of the spiral blade on the upright grain culm was reduced, the introduction of the grain culm into the auger was not smooth, and the overall conveyance performance was reduced.

An object of the present invention is to make it possible to smoothly and effectively introduce cut grain culms into an auger while appropriately maintaining the feed rate of the auger by setting the lead angle.

The characteristic configuration of the conveying device according to the present invention is that, in the combine harvester conveying device described at the beginning, the harvested grain culm in an upright position is placed near the left and right ends of the harvester above the auger, and the harvested grain culm is moved to the left and right center sides of the reaping section. It is equipped with a drive-type attitude change device that tilts and passes it to the auger.
Its action and effects are as follows.

In other words, in order to collect the harvested grain culms in an upright position located on both the left and right sides of the auger at the center between the left and right sides of the auger, the harvested grain culms in an upright position are forcibly tilted by the posture change device, and the grain culm posture is changed. By making the grain culm follow the inclination of the helical blade of the auger as much as possible, it is possible to avoid keeping the grain culm in an upright position due to sliding contact with the circumferential surface of the helical blade, and increase the probability that the grain culm will fall into the auger rotation trajectory. As a result, the biting effect of the spiral blade on the grain culm can be effectively improved, and as a result, the lead angle of the spiral blade can be set to a predetermined size and the feed rate of the auger can be set appropriately, while the feed rate to the auger can be improved. The introduction of the harvested grain culm can be made extremely smooth and good, and the conveyance performance of the auger as a whole can be greatly improved, which in turn can improve the efficiency of the reaping operation.

Next, examples will be shown.

FIG. 1 shows the front half of a combine harvester, in which a threshing device 2 and a boarding operation section are provided on a body frame equipped with a pair of left and right crawler running devices 1, and approximately the entire width of the body is provided at the front end of the body. A reaping section 3 extending over the width is equipped so as to be able to be raised and lowered around a left and right horizontal axis Q.

The reaping unit 3 includes a rotating reel 4 that scrapes the planted grain culm.
A driving cutting blade 5 that reaps the raked grain culm, an auger 6 that brings the grain culm that has been raked over the entire width of the reaping section 3 and has been harvested to the left and right center of the machine body, and a drive blade 5 that reaps the raked grain culm, and It is composed of various devices such as a conveyor 7 that feeds the grain culm to the threshing device 2.

As shown in FIGS. 1 and 2, the auger 6 includes a drum 6 that spans substantially the entire width of the reaping section 3.
A is rotatably horizontally supported on the left and right side plates 3a of the reaping section 3, and the drum 6A is mounted on the circumferential surface of the drum in the longitudinal direction of the drum 6A at a portion away from the conveyor 7 at the left and right center of the machine body, as the drum 6A rotates. A spiral blade 6B is provided for laterally feeding the harvested grain culm toward the left and right center, and the spiral blade 6B is provided in the central portion corresponding to the conveyor 7, and moves in and out as the drum 6A rotates, and its protruding action and drum 6A A plurality of claws 6C are arranged in parallel to scrape and supply the grain culms sent by the spiral blade 6B to the conveyance start end of the conveyor 7 by rotational action.

Reference numeral 8 in the figure is a chain transmission mechanism that transmits driving rotational force to the drum 6A from the machine side.

A helical blade 9A having a smaller pitch and smaller diameter than the helical blade 6B of the auger 6 is located above the front side of the auger 6 when viewed from the side and corresponding to both left and right ends of the auger 6 when viewed from the front. A pair of left and right screw shafts 9 are provided parallel to the auger 6, and the screw shafts 9 and the auger 6 are interlocked by separate left and right chain transmission mechanisms 10, and the feed direction of each screw shaft 9 is set parallel to the auger 6. As in 6, set the direction of rotation and the direction of the spiral blade 9A so that it faces the left and right center of the machine, and then
By acting on the tip side of the grain culm, which is introduced into the auger 6 in an almost upright state immediately after the cutting blade 5 cuts off the stock base, the screw shaft 9 moves the harvested grain culm by its lateral feeding action to the machine body. It is configured to be forcibly tilted toward the left and right center.

In other words, by forcibly tilting the harvested grain culm so that its posture in front view follows the inclination of the spiral blade 6B of the auger 6 as much as possible, the peripheral surface of the auger spiral blade 6B with a large lead angle and the vertical grain culm are It is configured to avoid holding the grain culm in an upright position due to sliding contact, increase the probability of the grain culm falling into the auger rotation trajectory, and to smoothly and efficiently introduce the reaped grain culm to the auger 6. .

In addition, in order to drive the left and right screw shafts 9, the second
As shown by the two-dot chain line in the figure, both screw shafts 9 may be integrally connected by one rotating shaft 9B, and one of the left and right chain interlocking mechanisms 10 that interlock the auger 6 and the screw shaft 9 may be omitted. Furthermore, instead of interlocking the screw shaft 9 with the auger 6, power may be transmitted in a branched manner from other rotational drive parts such as the conveyor 7 using various transmission mechanisms.

Next, another example will be shown.

Figure 3 shows the grain culm cut by the cutting blade 5 being transferred to the auger 6.
In contrast, a type of reaping section 3 is shown which is conveyed and supplied by a front conveyor 11, and in this case as well, the same effect can be obtained by equipping it with a screw shaft 9 similar to that described above.

FIG. 4 shows an apparatus equipped with an endless rotating belt type locking conveyance device 12 in place of the screw shaft 9, and the locking and feeding action on the tips of the claws 12A arranged in parallel with the endless rotating band is The device forcibly tilts the vertical grain culm toward the center of the machine, and the device for forcibly tilting the vertical grain culm includes a screw shaft 9, an endless rotating band type locking and conveying device 12, and a star foil type device. It is possible to apply various types of devices such as a rotary locking and feeding device, and these devices are collectively referred to as drive type attitude changing devices 9 and 12.

Further, the specific arrangement and drive structure of the posture changing devices 9 and 12 may be changed as appropriate depending on the posture changing form.

[Brief explanation of drawings]

The drawings show an embodiment of the conveying device for a combine harvester according to the present invention, FIG. 1 is a cutaway side view showing the front half of the combine, FIG. 2 is an enlarged front view of the auger,
FIG. 3 is a side view schematic sectional view showing another embodiment;
This figure is a diagram corresponding to FIG. 2 showing another embodiment. 3... Reaping section, 6... Auger, 7... Back feed device, 9, 12... Drive type attitude change device.

Claims (1)

[Claims] 1. In a combine conveyor device, which is provided with an auger 6 that brings the harvested grain culm in an upright position to the left and right center sides of the reaping section 3, and a device 7 that transports the grain culm from the auger 6 in a front-back and tilted position, the auger A combine harvester is provided with drive-type posture changing devices 9 and 12 above the auger 6 and near the left and right ends, respectively, to tilt the harvested grain culm in an upright position toward the left and right center of the reaping section 3 and pass it to the auger 6. conveyance device.