JPS6231882B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reaping harvester equipped with a forced culm pulling device.

In the above-mentioned reaping/harvesting machine, when the so-called head-cutting mode is used, in which the lodging direction of the planted stem culms is in the opposite direction to the direction of movement of the machine, the stem culms to be lifted are lifted by the weight of the following planted stem culms. However, since the stem culm is pressed against the front surface of the case, if the stem culm in the pressed state is subjected to the lifting action, it becomes easy to tear. The aim is to avoid this problem as much as possible.

Next, embodiments of the present invention will be described based on illustrative drawings.

The threshing device 1 is mounted on a crawler-type self-propelled machine stand,
The present invention includes a weed pulling section 2 that separates the planted grain culm into objects to be reaped and objects not to be reaped, and forcibly pulls up the object to be reaped, a reaping section 3 for the raised grain culm, and A pre-processing device equipped with a conveying section 5 that supplies the harvested grain culm to the starting end of the threshing feed chain 4 is disposed in front of the main body, and as the machine moves, it raises the planted grain culm and A combine harvester is configured to reap and thresh the harvested grain culm.

The weed raising section 2 is constructed as shown in FIGS. 2 and 3.

That is, from the main body, three frames 6 are arranged in parallel in the lateral direction of the machine and extend toward the front of the machine, and a weeding tool 7 for scooping up the planted grain culms is fixed to the tip of each of these frames 6. It has been done. Sprockets 9 and 10 are mounted on the lower end and upper end of the lifting case 8.
As the endless chain 12 is wound around a large number of locking claws 11 for lifting grain culms attached at appropriate intervals, as the endless chain 12 is rotated, the lifting claws 11 are attached to the lower end of the case 8. A pair of forced lifting devices 13a and 13b that protrude outside the case 8 and are configured to rise toward the upper end of the case while protruding from the case 8 on the lifting path side of the case 8.
are formed between each of the frames in an inclined state such that the lower end of the case, that is, the action start end is located near the rear of the fixed weed divider 7, and the action end is located above the action start end at the rear of the machine body. They are arranged to correspond to a certain pulling route. Then, a lifting drive shaft 16 interlocked with the pre-processing section drive shaft 14 disposed behind the reaping section 3 via a transmission rotation shaft 15 and a gear mechanism is connected to both the lifting devices 13a and 13b.
The lifting drive shaft 16 is interlocked with the upper end sprocket 10 of each of the lifting devices 13a and 13b. Then, at the lower end of the lifting case 8, the lifting claw 11 is locked to the stock side of the grain culm that has been picked up by the weeding tool 7 and guided into the lifting path, and the locking and lifting The claw 11 is raised while sliding against the culm to forcibly extend the culm.

As shown in FIGS. 2 and 3, each of the lifting devices 13a and 13b has a case portion 8a extending from the upper end side of the lifting case 8 toward the rear of the aircraft body, and a case for lifting the driving shaft 16. By rotatably attaching it to the 17 portion, it is held rotatably around the axis of the lifting drive shaft 16 with respect to the drive shaft case 17, and both the lifting devices 13a, 1
The starting end side of each of the lifting cases 3b can be moved back and forth by the swinging operation of the lifting case 8 about the lifting drive axis. A crankshaft 18 interlocked with gears is provided on the transmission shaft 15, and the crankshaft 18 and the case 8 of the right-hand pulling device 13b are pivotally connected by a rod 19. A drive mechanism 20 is configured to swing the right pulling device 13b back and forth so that its starting end side moves back and forth minutely repeatedly using power from the processing section drive shaft 14. Further, a crankshaft 22 is provided which is linked to the lifting drive shaft 16 via a transmission shaft 21 and a gear mechanism and has a rotational position 180 degrees different from the crankshaft 18 for the right lifting device. 22 and the case 8 of the left lifting device 13a are pivotally connected by a rod 23.
The drive mechanism 24 is configured to swing the left pulling device 13a so that its starting end side moves back and forth minutely repeatedly and to operate in the opposite direction alternately with the right pulling device 13b side by the power from the left pulling device 13a. There is. In other words, as shown in FIG. 4, when performing the opposite mowing operation, the grain culms to be raised are raised by the weight of the subsequent planted grain culms and are pressed against the front surface of the case 8, and the grain culms are moved forward and backward. moving triggering device 13
The pushing action of a and 13b provides a lifting action while keeping the case 8 spaced apart from the front surface.

Incidentally, instead of the above-mentioned rocking, the lifting devices 13a, 13
The whole b may be reciprocated back and forth, and in short, at least the action starting end side can be reciprocated so that the action of raising the target grain culm and separating it from the case 8 can be applied. Good.

Further, the same effect can be obtained even if both the lifting devices 13a and 13b are configured to integrally move back and forth in the same direction.

Further, in the case of a combine harvester in which a plurality of pulling devices are arranged in parallel, it may be configured so that only the pulling device located on the uncut side is moved back and forth.
This is because the planted grain culms that correspond to the pulling device on the mown side are only those from the front in the direction of movement, and the planted grain culms that correspond to the pulling device on the mown side are not affected by the grain culms in the unmown rows other than the reaped rows. This is also because the applied pressing force is small.

Further, the above-mentioned structure of the pulling device can be applied not only to a combine harvester but also to objects to be harvested other than binders, rice, and wheat, and the forced pulling devices 13a and 13b are replaced by the stalk culm forced pulling device 13a. , 13b.

In summary, the reaping and harvesting machine according to the present invention includes the forced stalk culm pulling devices 13a and 13b, which are movable back and forth at least on the action starting end side.
It is characterized by being provided with drive mechanisms 20 and 24 that move the lifting devices 13a and 13b back and forth minutely repeatedly.

That is, the forcible pulling devices 13a, 13b act on the stem culm to be pulled while separating it from the front surface of the lifting case 8 by the pushing action of the lifting devices 13a, 13b that reciprocate back and forth. Because of this, it has become possible to avoid the tearing of the stem culm mentioned above as much as possible.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the reaping and harvesting machine according to the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view of the main parts, Fig. 3 is a side view of the same, and Fig. 4 is the function of the main parts. It is a side view which shows a state. 13a, 13b... stem culm forced pulling device, 2
0,24... Drive mechanism.

Claims (1)

[Claims] 1. The stem culm forced pulling devices 13a, 13b are provided so as to be movable back and forth at least on the action start end side, and drive mechanisms 20, 24 are provided to move the pulling devices 13a, 13b back and forth minutely repeatedly. A reaping harvester.