JPH041767Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention is a two-row mowing class machine that has a pair of lifting cases, but it is capable of reliably performing three-row mowing without splitting the stock. This is about a combine harvester.

(Prior art and problems) Conventionally, there has been a combine harvester that is capable of mowing three rows with a two-row type machine equipped with a pair of left and right pulling devices, a pair of raking wheels, etc. Since the width of the divider is set based on two rows, when mowing three rows, the grain culms get caught in the middle divider, making the work messy, leaving bad cutting marks, and causing a lot of loss.

(Means for Solving the Problems) Therefore, the present invention provides a narrow width introduction section into which only one row of the standing grain culm group can be inserted between the middle divider and one side divider, and two narrow width introduction parts between the middle divider and the other side divider. A wide-width introduction section into which the rows are inserted is formed respectively, and a lifting case with a chain with tines stretched between the upper and lower two points on the narrow-width introduction section side, and a lifting case between the upper and lower three points with a horizontal section on the lower side on the wide-width introduction section side. A pair of hoisting cases each having a chain with tines stretched thereon are installed opposite each other, and a pair of star foil-like raking wheels and a pair of raking wheels are installed on the cutting blades behind the pair of hoisting cases, corresponding to each hoisting case. At the same time, a chain with protrusions is installed between the raking ring on the wide width introduction part side and the raking belt from the front side of the raking ring to the inside of the outer diameter of the raking ring. By configuring the protrusions to align with the teeth of the raking wheel and to fit within the shape of the raking wheel teeth, it is possible to maintain a small size even though it is a small two-row type mowing machine equipped with a pair of lifting cases. Three rows can be harvested at the same time as needed without replacing parts, which greatly increases work efficiency.
To provide a combine harvester which can reduce the amount of mow cutting and can immediately perform mechanical cutting from the edge of the ridge, eliminating the need for manual cutting and achieving labor savings.

(Embodiment) To explain the configuration of the present invention with reference to an embodiment shown in the drawings, FIG. This shows the overall structure of 2.
The standing grain culms in the field that are raised by the pair of left and right pulling cases 3 and 4 are cut off at the base by the cutting blade 5 disposed at the rear lower part of the lifting cases 3 and 4, and are After being raked and collected in the provided raking conveyance section 6, the culms are transferred to a lifting conveyance installation 7 equipped with a handling depth adjustment mechanism 7a, and then transferred from the conveyance terminal end to the feed chain 9 of the threshing section 8. The grain is threshed while passing through the handling room 8a.

In FIG. 2, 10 is a middle divider, and between the middle divider 10 and one side divider 11 there is a narrow introduction part A into which only one row C of the erect grain culm group P can fit, and between the middle divider 10 and the other side divider A wide introduction part (b) into which two strips (a) and (b) are inserted is formed between the side dividers (12). A lifting case with a chain 13 with tines 13a stretched between the upper and lower two points is on the narrow width introduction part A side, and a tension case with tines 15a stretched between the upper and lower three points on the wide width introduction part B side has a horizontal part 14 on the lower side. A lifting case 4 with a chain 15 stretched thereon is provided oppositely. By the way, the working lengths of the tines 13a and 15a are set so that the working length _{l1 of the two-row side tine 15a is longer than the working length l2} of the single-row side tine 13a, so that the action length _l1 of the tines 13a and 15a is longer than the working length l2 of the single-row side tine 13a. There is little inward fall when guided, and the a and c rays are centered on the b rays.
By collapsing the rows approximately symmetrically and aligning the tips of the rice grains in rows a, b, and c, it is possible to prevent unhandled rice from being left unhandled and disturbances in conveyance to the rear, and to reduce the load during threshing. Further, near the ends of the lifting action of the tines 13a, 15a, guide plates 16, 17 that gradually cover the tines 13a, 15a are attached integrally with the lifting cases 3, 4.
and working surfaces 13'a, 1 of tines 13a, 15a
Since the angle α formed by 5′a is set to an obtuse angle as shown in the figure, the grain culm can be easily exposed and separated from the cases 3 and 4 at the end of the lifting action.
The grain culm can be moved smoothly to the center while preventing the grain culm from being entangled, and the tine 13 can be used even with tangled materials such as fallen materials.
This makes it possible to effectively prevent clogging, wrapping, etc. between the guide plates 16 and 17 and the guide plates 16 and 17. In the figure, 18 is a driving sprocket, 19 is a roller, and 19' is a driven sprocket.

Now, on the cutting blade 5 behind the pair of lifting cases 3, 4, there are a pair of raking wheels 20, 21 consisting of a pair of driving star wheels and a driven star wheel, and a pair of raking wheels 20, 21, which correspond to the respective lifting cases 3, 4. Scraping belt 22, 2
A chain 24 with a protrusion 24a is disposed between the scraping wheel 21 and the scraping belt 23 on the side of the wide width introduction part B, and the chain 24 scrapes from the front side of the scraping wheel 21 from the outer side. It is also stretched across the outer diameter of the retaining ring 21 in a manner that is low in the front and high in the rear. The scraping wheels 20 and 21 are meshed around the middle divider 10, and the driven scraping wheel 21 is integrally formed with a sprocket 25 and a pulley 26 via a boss 21a, and a sprocket 25 and a pulley 26 are integrally formed between the pulley 26 and the pulley 26a. A raking belt 23 is wound around the pulley 26' and a raking belt 22 is wound between the pulley 26' and the pulley 26'a in a figure-eight shape in plan view. In addition, the protruding chain 24 is connected to the sprocket 2 mentioned above.
5 and a sprocket 25a that is pivoted on the outer side of the front side of the scraping wheel 21. By the way, as shown in the figure, the protrusion 24a of the protruded chain 24 is aligned with the teeth 21a of the scraping wheel 21, and
It is configured to fit within the shape of Therefore, the protruding chain 24 for the sprocket 25
In the meshing part of the sprocket-like scraping wheel 21
The protrusion 24a of the protruding chain 24 is placed on the tooth 21a of the
is in a wrapped state and the protrusion 24a is in the tooth 21a
The tooth 21a and the protrusion 24a are fitted within the outer diameter of the tooth 21a and the protrusion 24a.
are designed to rotate as a unit. 27 in the diagram
is a guide rod, and 28 is a reaping frame.

In the configuration as described above, when performing three-row mowing in which rows a, b, and c are cut at the same time as shown in Figure 2, two rows a, b, and a narrow guide section are placed on the wide guide section B side. Move the aircraft forward toward the erect grain culm group P in the field so that the first c-row enters A. When reaping is started in this way, the a-row is raised by the tine chain 15 and raked toward the center in the width direction by the horizontal part 14 of the case 4, and the a- and b-rows are simultaneously guided to the back side of the case and raked. The belt 23 moves the middle part of the culm toward the center as if it were being raked and held by hand. As soon as the a-row is cut by the cutting blade 5, the protrusion 24a of the protruding chain 24 quickly moves the plant base to the center, corrects the culm to an upright position, and merges with the b-row.
1 and 20 together with the c-rows, and is conveyed from the end of the raking to the lifting conveyor 7, where it is threshed in the threshing section 8. In short, when mowing three rows, the b row is cut by the teeth 21a of the raking wheel 21, and the a row is cut by the teeth 21a of the raking wheel 21. The a and b strips meet in the center and are transported to the rear. In addition, when reaping two rows, it is carried out in the same way as normal two-row cutting. In this way, in the present invention, the middle divider 10 and one side divider 11
The narrow width introduction part A with only one thread in between is the middle divider 1.
0 and the other side divider 12 are formed respectively, so when mowing 3 rows, the standing grain culms get caught in the middle divider 12 and cause splitting, which may result in leaving too much bread or changing the transportation posture. Reaping work is always carried out in an orderly manner without problems such as unhandled losses due to disturbance. In particular, a horizontal part 14 is provided on the lower side of the wide-width introduction part B-side lifting case 4 for lifting and transporting from the outside toward the center. Although it is a small 2-row type model equipped with a pair of lifting cases 3 and 4, it can freely perform 2-row mowing or 3-row mowing, allowing for efficient reaping work by minimizing the need for pillow mowing, manual mowing, etc. . By the way, in the present invention, the protrusion 24a of the protruded chain 24 is configured to be aligned with the teeth 21a of the sprocket-like scraping ring 21 and to fit within the shape of the teeth 21a of the scraping ring 21. Grain culms cut at the starting end of the raking are transferred laterally by the protrusion 24a, and at the part where it is transferred to the raking wheel 21, the protruding chain 2
Scraping wheel 2 rotating at the same speed as rotation speed of 4.
Since the first tooth 21a comes out from the rear of the protrusion 24a as if scooping up the grain culm and transfers it to the tooth 21a of the raking ring 21, the inheritance of the grain culm becomes extremely smooth and reliable.
Grain culm conveyance performance can also be further improved. In addition, after inheritance, the grain culm is
The meshing gap between the scraping wheels 20 and 21 is maintained by the protruding chain 2.
Since the original meshing gap is maintained without being interfered with by the protrusions 24a of the chain 24, it is possible to sufficiently respond to changes in the amount of grain culm to be transported. Since it rotates integrally with the teeth 21a in a hidden manner, there is no entrainment of the grain culm, and therefore there is no need to take any special means to prevent entrainment.

(Effects) As described above, the present invention introduces a narrow width introduction section that allows only one row of the standing grain culm group to fit between the middle divider and one side divider, and a wide width introduction section that fits two rows between the middle divider and the other side divider. On the narrow width introduction part side, there is a lifting case with a chain with tines stretched between two points above and below, and on the wide width introduction part side, there is a chain with tines stretched between three points on the top and bottom with a horizontal part on the lower side. A pair of star foil-like raking wheels and a pair of raking belts are arranged on the cutting blade behind the pair of lifting cases, corresponding to each lifting case. At the same time, a chain with a protrusion is stretched between the raking ring on the wide width introduction part side and the raking belt from the front side of the raking ring to the inside of the outer diameter of the raking ring, and the protrusion of the protruding chain is stretched between the raking ring and the raking belt. Since it is configured to synchronize with the teeth of the raking wheel and fit within the shape of the raking wheel teeth, no parts etc. need to be replaced even though it is a small model of the two-row type with a pair of raising cases. You can freely mow 2 or 3 rows as needed without having to cut the grass, and even when cutting 3 rows, it is possible to eliminate stock splitting, reducing the amount of unused areas and unhandled losses.
In addition to being able to perform reaping work reliably and efficiently at all times, it is also possible to achieve significant labor savings by minimizing the amount of room for mow-cutting or hand-harvesting. Demonstrates great power when reaping. In addition, at the point where the grain culm cut at the scraping start end side of the chain with protrusions is transferred laterally by the protrusions of the chain with protrusions to the star foil-shaped raking ring, the teeth of the raking ring are behind the protrusions. Since the grain culm comes out like a scoop and is delivered to the teeth of the raking wheel, the inheritance of the grain culm is carried out extremely smoothly and reliably, and the conveyance performance is further improved. Since it rotates integrally with the raking wheel so that it is hidden above the teeth of the raking wheel, there is no entrainment of the grain culm, thus eliminating the need for special entrapment prevention means and enabling highly efficient work. be effective.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the reaping device, Fig. 2 is a front view of a combine equipped with the present invention, Fig. 3 is a plan view of the main parts, and Figs. 4 and 5 are left side views of the main parts, respectively. and a right side view. In the figure, 2 is a reaping device, 3 and 4 are a pair of lifting cases, 5 is a cutting blade, 6 is a cutting conveyor, 10 is a middle divider, 11 and 12 are side dividers, 13 and 15
is a chain with tines, 13a and 15a are tines, 1
4 is a horizontal part, 20 and 21 are a pair of scraping wheels, 22,
23 is a pair of scraping belts, 24 is a chain with protrusions,
24a is a protrusion, A is a narrow introduction part, and B is a wide introduction part.

Claims (1)

[Scope of utility model registration request] A narrow introduction part into which only one row of the standing grain culm group can be inserted is formed between the middle divider and one side divider, and a wide width introduction part into which two rows can enter between the middle divider and the other side divider, and the narrow width introduction part side is formed. A lifting case with a chain with tines stretched between two points on the top and bottom is installed on the side, and a lifting case with a chain with tines stretched between three points on the top and bottom with a horizontal part on the lower side is installed opposite to the wide width introduction part side. A pair of star foil-shaped raking wheels and a pair of raking belts are arranged on the cutting blade behind the pair of lifting cases, corresponding to each lifting case, and a raking belt on the side of the wide width introduction part is arranged. Between the wheel and the raking belt, a chain with protrusions is stretched from the front side of the raking ring to the inside of the outer diameter of the raking ring. A combine harvester characterized by being configured to fit within the shape of the teeth of a ring.