JPH0647235Y2 - Conveying structure for pre-treatment section of 3-row harvest combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a transport structure of a pretreatment section of a three-row cutting combine.

<Prior Art> Conventionally, in the transport mechanism of the pretreatment unit in the three-row harvest combine, the grain culms introduced from between the raising cases are joined by the stock-source transport device provided in an H-shape, and the handling depth is set backward. It is the one that is passed on to the carrier device, and the grain culm is generally held by a scraping device that holds the root of the grain culm, and the tip of the grain is raised and the raising claw of the case holds it in an upright state. .

<Problems to be solved by the invention> However, in the conventional transfer device, the grain culm held in the upright state by the raising claws of the raising case is inherited as it is to the stock-source conveying device arranged at the rear, They are merged by the transport device.

These transport mechanisms do not have a mechanism for holding and guiding the stems of the grain culms, and the transportation of the culm tips and stems of the grain culverts is delayed between the raising case and the stock-source transport device, resulting in a smooth rearward transport. Was sometimes damaged.

Furthermore, since there is not a sufficient mechanism for holding and transporting the grain stems to the confluence, the grains will be merged and sent to the rear in a disordered state, and the grains after the merge will be misaligned to the threshed portion. Be transported. As a result, the threshing resistance increases, the threshing power required increases, and the amount of chaff generated in the handling room also increases.

In addition, in a 3-row combine harvester, the amount of grain culm sent from the 2-row cutting transport on the uncut side is large, so
When the grain culm on the line transport side is disturbed, the above-mentioned problems were remarkably generated.

<Means for Solving the Problems> The present invention for solving the above problems includes three raising cases 9a, 9b, which are located in front of the pretreatment unit 4 on the uncut side, the cut side and the center. 9c are installed side by side, and the left and right stock carrier devices 13a, 13b provided in a V shape so that the grain culms introduced between the raising cases 9a, 9b, 9c can be merged at the center of the raising case 9b.
Provided, further provided a lifting carrier 24 for transferring and transferring the grain culm to the threshing section, and between the raising case 9a on the uncut area side and the uncut land side stock source carrying device 13a Two upper and lower upper conveying devices 15a and 15b for guiding the stem above the plant are attached, and the raising case 9b and the uncut side raising case 9a are provided on the rear side of the central raising case 9b. Behind the two-row cutting-side grain-culm introducing route 10a, the lower edge of the two-row-cutting-side grain-culling introducing route 10a is located along the conveyance section of the two-stage upper conveying devices 15a, 15b. Swells to the lower rear and upper end 2
1b is characterized in that a guide plate 21 is attached to the upper end of the central raised case 9b, and the lower end of the raised case 9b is raised to form a guide surface that is inclined toward the lower end of the case 9a.

<Operation> Grain culm caused by each raised case 9a, 9b, 9c is transported backward by the stock carrier transport device 13a, 13b, at the same time without delay in the transport of the stock by the upper transport device 15a, The stems of the grain culms are sent to the rear, and the grain culms are merged smoothly. Therefore, the grain culms are passed to the lifting carrier 24 in a state where they are gathered, and efficient threshing is possible.

Further, the upper part of the grain culvert is smoothly inclined to the already-cut side by the guide plate 21, and the merging of the upper part of the grain culm becomes smooth.

<Embodiment> Hereinafter, the structure of a pretreatment unit according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 is an overall perspective view of the combine. The combine main body 1 has the threshing section 2 mounted on the left side and is mounted on the traveling device 3. A pretreatment unit 4 is attached to the entire main body 1 so as to be vertically swingable so as to perform cutting and rearward transportation of grain culms.
The grain culms cut by the pretreatment unit 4 are passed to the feed chain 5 and processed by the threshing unit 2.

The structure of the preprocessing unit 4 will be described below.

At the front of the pretreatment section 4, as shown in FIGS. 1, 2 and 3, the case 9 is raised on the front end of the pretreatment frame 7.
A, 9b, 9c are erected, and introduction paths 10a, 10b for introducing grain culms are formed between the raising cases 9a, 9b, 9c. At the lower rear part of each raising case 9, scraping devices 11a, 11b, 11c made of star wheels or the like are provided (FIG. 3), and the grain culms scraped by the scraping devices 11 are cut. Is held and the stock is carried to the rear. Stock carrier equipment 13a, 13b
Is located behind the scraping device 11, and the scraping device 11 on the uncut side is
The uncut land-side carrier 13a that carries the grain culms from a and b to the rear and conveys the grain culm from the scraped device 11c on the already-cutted-land side, and the already-cut-land-side carrier 13b that conveys the grain culm to the rear It is constructed by butt-joining in a V shape. The grain culms conveyed by the respective carriers 13a, 13b merge at the abutting portions (merging portions) of the two carriers 13a, 13b, and are further transported to the lifting carrier 24 at the rear. The lifting carrier 24 conveys the culm to the feed chain 5 which conveys the culm to the threshing unit 2.

The transfer bodies 13a and 13b have a structure in which an endless chain having a claw formed on the outside is wound around a guide roller.
The a is driven by the input shaft 12a around which the endless chain is wound. In addition, the uncarried carrier 13b is similarly driven by the input shaft 12b behind the scraping carrier 11c.

On the other hand, a drive shaft 14a is coaxially connected to one guide roller of the stock carrier 13a and extends upward, and upper and lower two-stage upper transport devices 15 are provided above the drive shaft 14a. A drive shaft 14b is similarly connected to the input shaft 12b of the stock carrier 13b on the cut-side, and upper and lower two-stage upper transfer devices 17 are provided as on the uncut-side.

Each of the upper and lower carriers 15a, b, 17a, b has a structure in which an endless chain 16 is wound around the drive shaft 14 and a pawl 18 is swingably attached to the chain 16. As shown in FIGS. 1, 4 and 5, the pawls 18a, 18b project toward the center case 9b side from the edge portion of the covers 19a, 19b for covering the chain 16 and drive the chain 16a. Move backwards.

Here, the upper conveying devices 15a and 17a in the upper stage convey the tips of the culms to the rear, and the upper conveying devices 15b and 17b in the lower stage convey the stems of the culm to the rear. According to these upper transport devices 15 and 17, the upper part of the grain culm is transported to the rear without delaying the transportation of the stocker, and the rear grain culms are smoothly joined.

On the other hand, as shown in FIG. 4, guide plates 21 and 22 for guiding the grain culms introduced between the raising cases 9 are attached to the rear side of the raising case 9b in the center. The guide plates 21 and 22 are provided on the two-row cutting side and the one-row cutting side, respectively.
21 and 22 form a box shape as a whole. With such a box shape, the guide plates 21, 2
It becomes possible to attach the two together at one time, which simplifies the attachment and also increases the strength of the entire guide plate.

The lower end 21a of the guide plate 21 provided on the two-row cutting side bulges into the grain culm introducing path 10a, and the upper end 21b is formed substantially along the claw 18a of the upper transfer device 15a in the upper stage, and the upper part as a whole. Are attached so as to incline toward the cut land. Further, the lower edge 21c of the guide plate 21 is bent outward to come close to the upper side of the claw 18b of the lower upper transfer device 15b as shown in FIG.
As shown in FIGS. 1, 4, and 5, the tip of the claw 18b reaches the lower edge 21c of the guide plate 21.

The guide plate 22 is mainly composed of five guide surfaces, as shown in FIG. The guide surface 22a located at the lower end is projected obliquely to the cut land side so as to bulge into the grain culm introduction path 10b. Further, in the guide surface 22b connected to the rear of the guide surface 22b, the lower edge 22f is bent outward, and the claws of the lower upper transfer device 17b are provided.
Close to the upper side of 18b, as shown in FIG. 4 and FIG.
The tip of the claw 18b reaches the lower edge 22f of the guide plate 22. Guide surfaces 22c and 22d are formed on the upper side of the guide surface 22b.
22c and 22d are provided by bending in a chevron cross section. The ridge line 22g having the chevron cross section is formed so as to be located above the locus along the tip movement locus of the claw 18a of the upper conveying device 17a in the upper stage. The guide surface 22e is located above the guide surface 22d.
However, it is provided along the toes of the upper transfer devices 17a, 17b so as to be inclined toward the cut land.

As described above, since the lower pawls 18b of the upper transfer devices 15 and 17 reach the lower edges of the guide plates 21 and 22, the guide plates 21 and 2
Grain spillage between 2 and the lower upper transfer devices 15b, 17b is substantially prevented.

Further, between the upper conveying device 15a on the upper stage and the guide plate 21,
Since the guide plate 21 is obliquely inclined along the upper conveyance devices 15a and 15b in the upper and lower stages, it is possible to minimize grain spillage.

In addition, the upper transfer device 17a and the guide plate 22 in the upper stage on the 1-row cutting side are
As shown in FIG. 8, the distance between the claw 18a and the guide plate 22 is L, but it is 1 in a plan view, and the distance is extremely narrow. Therefore, the distance between the upper conveying device 17a in the upper stage and the guide plate 22 is increased. There will be less spillage of grain. Further, since the actual distance between the claw 18a and the guide plate 22 is L in the horizontal distance and h in the vertical distance, even if a deviation occurs due to a processing error or an assembly error, the claw 18a
And the guide plate 22 do not come into contact with each other, and grain spillage is reduced as described above.

<Advantages of the Invention> According to the transport structure of the present invention configured as described above, the two cuttings of cut culms on the uncut side are provided with the upper transfer device and the guide plate with the upper part inclined to the cut site. Guided so as to incline toward the already-cut area and conveyed to the rear part of the confluence with the one-row cutting grain culm, the converging posture at the confluence part is the one- and two-row cutting grain. It is possible to convey the grain culms to the threshing section in a state where both the culms are aligned with the upper part inclined to the cut land side. As a result, it is possible to prevent an increase in threshing resistance due to unevenness of grain culms, defective threshing, or involvement of grain culms. Particularly, in a combine of three-row cutting, it is possible to guide the two-row cutting side grain culms, which have a large amount of conveyance, and convey the grain culm in a state where the grain culms are aligned with the one-row cutting side in advance. .

[Brief description of drawings]

FIG. 1 is a front view of a pretreatment unit showing a guide plate and an upper conveyance device on the two-row cutting side, FIG. 2 is an overall perspective view of a combine using one embodiment of the present invention, and FIG. 3 is a conveyance of the pretreatment unit. FIG. 4 is a plan view showing the mechanism, FIG. 4 is a front view of a pretreatment unit showing the overall shape of the guide plate, and FIG. 5 is a side perspective view of the pretreatment unit showing the positional relationship between the guide plate on the two-row cutting side and the upper conveyance device. FIG. 6 is a side view of the uncut land side, FIG. 7 is a side view of the cut land side showing the positional relationship between the guide plate and the upper transfer device on the 1-row cutting side, and FIG. 8 is A- of FIG. A
FIG. 4: Pretreatment part, 9: Raising case 10: Introduction route, 13: Stock source transfer device 15: Upper transfer device, 21: Guide plate 24: Lifting transfer body

Claims (1)

[Scope of utility model registration request] 1. A pretreatment section (4) is provided with three raised cases (9a), (9b), (9c) in front of the uncut area, the already cut area and the center.
The left and right stocks are arranged in parallel, and are arranged in a V shape so that the grain culms introduced between the raising cases (9a), (9b), and (9c) can be merged at the center of the raising case (9b). The former transfer devices (13a) and (13b) are installed, and the lifting transfer body (24) that transfers and transfers the culm to the threshing section is installed in the rear, and the raising case (9a) on the uncut area and the uncut Ground-side stock carrier (13a)
And upper two-stage upper conveying devices (15a) and (15b) for guiding the stems above the root of the grain culm are attached to the center raising case (9b) on the rear side. Above the two-row cutting side grain culm introduction path (10a) formed between the case (9b) and the uncut side raised case (9a), the two-stage upper transfer devices (15a), (15b) ), The lower edge bulges to the lower rear part of the grain-culm introducing path (10a) on the two-row cutting side and the upper end (21b) extends toward the upper end of the central raising case (9b). Conveying structure for a pre-processing section of a three-row harvest combine with a guide plate (21) having a guide surface whose lower end is raised on the uncut area side and is inclined toward the lower end of the case (9a).