JPS6028188Y2 - Grain culm weeding device of reaping harvester - Google Patents

Description

[Detailed description of the invention] The present invention is a self-propelled, self-removal type reaping harvester such as a combine harvester, which uses a mechanism to pull up the culm by separating the culms to be planted in the field while removing tangles from the tips of the culms. This relates to a culm separating device that sends the culm to the reaping conveyor through the culm, and more specifically, a plurality of tines attached to an endless chain are installed in front of the culm lifting mechanism located in front of the reaping conveyor to move the reaping and harvesting machine forward. The present invention relates to a weed culling device equipped with a weed culling mechanism that moves from the bottom upward along the direction.

In this way, in front of the culm lifting mechanism located in front of the reaping and conveying section, there is a weed cutting mechanism in which multiple tines attached to the endless chain move upward from below along the forward direction of the reaping and harvesting machine. The provided weeding device is described in Japanese Utility Model Application Publication No. 49-78425 as a prior art.

However, the weeding chain mechanism in this known culm weeding device has a case that accommodates the endless chain with tines that has a narrow rectangular cross section, which allows the culm tines to have a large length during weeding. If the cross-section of the case in the grass cutting machine mechanism is narrow and rectangular, the grass cutting machine can be caught in the grass cutting machine.

The culm of the flower carapace is supported only by the corner of the case with a narrow and rectangular cross section.In other words, when the culm is supported against the case, the contact area is small, so the culm is supported only by the corner of the case. During weeding, the phenomenon of the grains breaking off from the contact support part against the case, tearing them to pieces, or squeezing them out occurs frequently, and the power required for weeding the husks also increases.

In addition, since the case that houses the endless chain is long and narrow, if the width of the case is narrowed to make it flat, there is a problem that the rigidity in the width direction will decrease, causing flexure and deformation. The phenomenon in which the shell culm in the grass is bent at the corner of the front end of the case becomes severe, and the harmful effects such as tearing and shedding of the shell culm become serious, and
Since the grain culms are separated at the tip of the tine, the length must be increased, which is disadvantageous in that the load on the tine increases.

The present invention solves the above problem by forming the cross section of the case housing the tine chain 7 in the weeding chain mechanism into a ladder shape, narrow at the front and wide at the rear.

In other words, if the case of the weeding chain mechanism is formed into a ladder shape with a narrow front part, the case as a whole can be made wider and its rigidity can be strengthened. The grain culms that have been weeded are separated at the root of the tine, which reduces the load by shortening the tines, and because the grain culms subjected to the weeding action contact the case smoothly over a wide area, the grain culms This can prevent the grain culm from breaking or tearing due to sudden bending, and from shedding due to excessive straining.

Next, a drawing of an embodiment in which an example of the present invention is applied to a combine harvester is explained. In the figure, 1 shows a combine machine body having a running roller 2, and a foot chain 3 is provided on the top surface of the machine body 1. A threshing section 4 is provided, and a frame 5 protruding from the top and bottom of the machine body 1 is provided in front of the threshing section 4.
A grain pretreatment section 7 is provided via 6.

A plurality of preprocessing units 7 (four in this embodiment) are installed between the front ends of the frames 5 and 6 with their upper portions tilted rearward.
culm lifting mechanism 8, reaping mechanism 9 attached to the lower frame 6
, consists of a stock head conveyance mechanism 10 located at the top and two rows of top and bottom tip conveyance mechanisms 11.12, and the reaping mechanism 9, stock head conveyance mechanism 10, and both ear tip conveyance mechanisms 11.12 are connected to a line connecting their tips. 13 is arranged at a position inclined forward at an appropriate angle θ with respect to the field surface 14, and between the rear ends of these and the foot chain 3, a foot chain is installed, holding the base of the cut culm. A vertical conveyance mechanism 15 and two upper and lower rows of ear tip conveyance mechanisms 16 and 17 are installed.

The plurality of lifting mechanisms 8 are arranged as a pair and form a culm passage 18, 18 between them, and a large number of tines 19 are provided in an endless chain installed in the case so as to be able to rise and fall freely, and the tines 19 are connected to a combine harvester. Each pulling mechanism 82 tine 19 is arranged to move upwardly from below in the shell culm passage 18, 18 in a direction perpendicular to the traveling direction of the culm passage 18.
It is configured to move upright in the shell culm passages 18, 18 formed between a pair of pulling mechanisms, and the front lower part and both shell culm passages 18, 18 of the pulling mechanisms 8, 8 located on both left and right sides of the combine harvester. The adjacent pulling mechanisms 8, 8 between them
At the middle front lower part of the lower frame 6, there are provided grass branches 20, 20, 20, which are attached to the lower frame 6, respectively.

21.21.21 shows a weeding chain mechanism provided between the pulling mechanism 8 at the rear position of each weeding body 20, 20°20.
and an endless chain 25 wound between the upper and lower sprockets 23 and 24 in the case 22.
2 is a chain case 26 and an arm 27 that protrude from the upper frame 5 in front of the upper part of the lifting mechanism 8 so that the chain 725 is perpendicular to the tines 19 in the lifting mechanism 8, that is, parallel to the traveling direction of the combine harvester. The upper part of the chain is attached to the tubular body 28 mounted between them so as to be inclined backward, and the lower end of the chain faces the rear surface of the weeding body 20. The chain 725 in each case 22 is connected to the shaft inserted into the tubular body 28. By transmitting power to 29 from the transmission shaft 30 in the upper frame 5 via the bevel gear body 31 and the chain 732 in the chain case 26, the endless chain is rotated upward from below as shown by arrow A in the figure. 25 is equipped with a large number of tines 33 at appropriate intervals, and the tines 3
3 is configured to move while protruding from the case 22 on the upper side of the front surface of the combine.

Then, in each weeding chain mechanism 21, the tine 3
Case 22 that accommodates the endless chain 35 to which 3 is attached.
The cross section of
．． 35, etc., on the front side of the combine or narrow,
It has a ladder shape with a wide rear side.

In this configuration, the culms planted in the field are first divided into 20 parts as the combine harvester progresses. 20. 20, the movable tine 33 in each weeding chain mechanism 21 separates the harvested grain stalks that enter the culm passages 18, 18 in the pulling mechanism 8, and the uncut grain stalks that do not enter the culm passages 18, 18. While the tangles at the tips of the reaped grain culm and the non-reaped grain rod are removed, the reaped grain culm is transferred to the weeding chain mechanism 21
After being pulled up by the pulling mechanism 8, it is sent to the reaping mechanism 9, the stock head conveying mechanism 10, and the tip conveying mechanism 11, 12.

In this case, the cross section of the case 22 in each weeding cheno mechanism 21 is made such that the slopes 34 and 35 are provided at the front of both left and right sides of the case 22 as described above, so that the cross section is narrow at the front side of the combine and at the rear. It is configured in a ladder shape with wide sides, and as a result, the corners on both sides of the tines 33 of the weeding cheno mechanism 21 are eliminated, and the reaped grain culms and non-reaped grain culms that are separated and weeded by the weed cutting cheno mechanism 21 are removed. What is Tine 33?
Since it approaches the root part and comes into contact with the root part, it is possible to reliably hook the grain culm to the tine 33 without increasing the length of the tine 33, while at the same time Since the reaped grain culm and the uncut grain culm are supported over a wide area by the inclined surfaces 34, 35 on both the left and right sides of the case 22 having a trapezoidal cross-sectional shape, bending of the grain culm during weeding can be reduced. This is possible.

Further, since the case 22 has a narrow width only at the front part and a certain degree of width as a whole, its rigidity is strengthened, and even if the case 22 has a substantially flat elongated box shape, it does not bend in the width direction. That is not the case.

As described above, according to the present invention, the shell culm during weeding can be hooked to the tines of the weed cutting chain mechanism as much as possible, but the shell culm during weeding can be hooked onto the tines of the weed cutting chain mechanism. Since bending due to contact support for the case housing the grain can be reduced, it is possible to reliably reduce tearing of the grain culm due to bending of the shell culm during weeding, and to reduce the straining of the grain, thereby improving the harvest rate. Moreover, since there is less bending of the shell culm during weeding, the resistance required for weeding is reduced, which has the effect of reducing the required power.

In addition, since the case in the above-mentioned weeding cheno mechanism is narrow only at the front part and widened as a whole, the rigidity of the entire case can be strengthened, which reduces the rigidity of the case. This makes it possible to maintain the effects of preventing the culms from being torn apart during weeding, reducing excessive straining, and reducing the power required for weeding.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the front of the combine, Fig. 2 is a front view of the combine, Fig. 3 is an enlarged view of the weeding chino mechanism, and Fig. 4 is the same as Fig. 1. FIG. 5 is an enlarged sectional view taken along line IV-IV in FIG. 3. DESCRIPTION OF SYMBOLS 1... Combine harvester body, 8... Culm lifting mechanism, 21... Grass cutting chain mechanism, 22...
...Case, 25...Cheno, 33...
...Tine.

Claims (1)

[Scope of utility model registration request] A weeding cheno mechanism equipped with a cheno that rotates in parallel to the traveling direction of the reaping and harvesting machine is provided at the front of at least one pair of culm lifting mechanisms provided on the front of the body of the reaping and harvesting machine, and the weeding cheno mechanism includes: In a culm weeding device in which the cheno is provided with tines that move upward from below with the front part of the reaping/harvesting machine protruding at appropriate intervals, a case containing a chino with tines in each of the above-mentioned weed cutting cheno mechanisms is provided. A culm dividing device for a reaping and harvesting machine, characterized in that the cross section is formed into a ladder shape with a narrow front side and a wide rear side of the reaping and harvesting machine.