JP4297801B2 - Normal combine - Google Patents

Description

  The present invention relates to a normal combine that includes a harvesting unit that harvests crops and includes a feeder that supplies the harvested product to a threshing device at the rear of the harvesting unit.

Conventionally, with this type of ordinary combine, when the crops harvested by the harvesting unit are supplied to the feeder, dust may enter the vicinity of the entrance of the feeder, which may hinder work (for example, dust may cause a problem in the front). Visibility could be obstructed). For example, there has been a countermeasure against such a problem by the configuration described in Patent Document 1. In other words, there is a configuration in which a dust suction fan is provided on the upper surface of the feeder to suck the air inside the feeder by sucking the air inside the feeder and to discharge the sucked dust to the lower left side of the feeder.
JP 2002-345320 A (FIG. 4)

  With the configuration as in Patent Document 1 above, the suction port does not act directly on the cutting portion and the entrance portion of the feeder where dust can easily enter, so the suction action does not act directly. There was a problem that the suction effect was apt to be insufficient, and the dust absorption effect near the cutting part and near the feeder entrance was weak.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a normal combine that can effectively collect dust at a cutting portion, a feeder entrance portion, and its surroundings.

[I]
(Constitution)
The first feature of the present invention is provided with a cutting part for cutting a crop, and provided with a feeder behind the cutting part for supplying the cutting to a threshing device,
A suction port for sucking dust is provided at a location adjacent to the end of the feeder on the cutting part side,
Of the outer walls of the feeder, the lateral wall portion is configured as an inner / outer double, and a dust transport duct following the suction port is formed between the inner / outer double lateral wall portions outside the crop transport path of the feeder. An air generating mechanism for generating an air current for transferring dust is provided in the duct.

(Function)
According to the first feature of the present invention, the suction port is located at a location adjacent to the end of the feeder on the side of the cutting part, so that a large amount of dust is generated near the cutting part and near the entrance of the feeder. The suction action works at a close position. Therefore, dust can be sucked from the suction port in a high-density state before the generated dust is diffused into the surrounding space.
Since the suction port is provided at a position adjacent to both sides of the end portion on the cutting portion side of the feeder, the harvested cereal mash transferred from the right and left direction of the cutting portion toward the feeder entrance is in front of the feeder entrance. Immediately before merging at the location, the suction action is distributed and received at locations adjacent to the left and right sides of the feeder entrance. That is, the suction action is individually applied to the harvested cereal meal supplied to the feeder entrance from the left and right supply paths. Therefore, a stronger suction action acts on the harvested cereal meal.
In addition, since the suction ports are arranged in the left and right direction, the suction action is performed in a wider region in the left and right direction.

(effect)
According to the first feature of the present invention, since the dust can be sucked from the suction port in a high density state before the generated dust is diffused into the surrounding space, an effect of improving the dust suction effect can be expected.
In addition, a stronger dust suction action acts on the harvested cereal and the suction action works in a wider area in the left-right direction, so that the dust suction effect is improved.

  FIG. 1 and FIG. 2 show a general-purpose combine that throws in whole chopped cereal meal and performs threshing treatment. In this combine, a threshing device 3 and a grain recovery tank 4 are mounted in parallel on the left and right on a traveling machine body 2 that runs on a pair of left and right crawler traveling devices 1, and a driving cabin is located in front of the grain recovery tank 4. 5, and a feeder 6 for conveying cereals that is mounted on the front end of the threshing device 3 so as to swing up and down around a fulcrum P is configured to be driven up and down by a hydraulic cylinder 7. A cutting pre-processing section (corresponding to the cutting section of the present invention) 8 is integrally connected. In addition, a driver's seat 9 is provided in the cabin 5, and an engine 10 is disposed in a horizontally placed state with its output portion positioned inward of the fuselage with the driver seat 9 positioned below the rear portion. .

  The pre-harvest processing unit 8 places a rotating reel 11 that rakes back to the machine body while raising the planted culm, a clipper-type reaper 12 that scrambles the culled culm, and places the harvested culm backward. The belt-type front conveyor 13 that conveys, an auger 14 that collects the harvested cereals at one location of the cutting width, and the like are provided. As shown in FIG. A slat type conveyor 15 that feeds cereals to the front end of the handling room of the threshing device 3 is provided so as to wind the tension roller 35, the feeder starting point ring 36 and the feeder driving ring 37.

  As shown in FIG. 3, the threshing device 3 has a handling cylinder 17 pivotally supported horizontally across the front and rear side walls of the handling chamber 16 communicated with the terminal end of the feeder 6, and swings below the handling chamber 16. A structure in which a sorting unit 18 for sorting and wind sorting is provided, and a receiving network (concave) 19 for supplying a processed material from the handling chamber 16 to the sorting unit 18 is disposed along the lower side of the handling cylinder 17. The front portion of the handling chamber 16 is projected forward from the front wall of the sorting portion 18. When viewed from the left side of the threshing device 3, the engine 10 is positioned below the front overhanging portion of the handling chamber 16, and a part of the engine 10 on the inward side of the engine 10 is in the lower space of the front overhanging portion of the handling chamber. It is configured to enter.

  The handling cylinder 17 is configured by connecting a tapered taper cylinder part 17B to the start end of a cylindrical straight cylinder part 17A, and two spiral scraping blades 20 are provided on the taper cylinder part 17B. At the same time, the spiral teeth 21 are attached to the outer peripheral surface of the straight body portion 17A, and the independent teeth 22 are attached to the spiral teeth 21 at predetermined intervals in the circumferential direction.

  The sorting unit 18 includes a swing sorting case 23, a tang box 24, an auxiliary blower 25 for rough selection, a transverse feed screw conveyor 26 for collecting the first thing, a transverse feed screw conveyor 27 for collecting the second thing, and a second style selection. And the like, and the threshing processed material leaked and supplied from the receiving net 19 is subjected to sieving and wind sorting while being oscillated and transferred backward by the oscillating sorting case 23, and the cereal that has been sorted and collected. Grains are lifted to the grain recovery tank 4 via the transverse feed screw conveyor 26 and the longitudinal feed screw conveyor 29, and the second unselected item is passed through the transverse feed screw conveyor 27 and the longitudinal feed screw conveyor 30. It is reduced and supplied to the front part of the swing sorting case 23 so as to be subjected to the sorting process again. Further, behind the sorting unit 18, a chopper 31 that shreds straw waste discharged from the end of the handling chamber 16, and a chopper that is above the chopper 31 and sucks dust near the end of the sorting unit. A dust blower 32 that blows down from above is disposed in the shredding discharge path of 31.

  As shown in FIGS. 2, 4, 5, and 6, the left and right side walls 33 (corresponding to the outer wall of the present invention) of the feeder 6 have a double structure and are positioned on the outer sides of the left and right inner walls 33 b. And left and right outer walls 33a. The double side walls 33a and 33b and the upper surface 6U and the lower surface 6D of the feeder 6 constitute a duct 34 having a passage between the walls 33c (corresponding to the space between the outer walls of the present invention). That is, the duct 34 is adjacent to the left and right side surfaces of the feeder 6 along the conveyance path of the feeder 6.

  As shown in FIGS. 5 and 6, the suction port 34IN that is the front end of the duct 34 is located on the rear surface of the pre-cutting processing unit 8, and the pre-cutting process that is a connecting portion between the feeder 6 and the pre-cutting processing unit 8. The suction port 34IN is provided on the rear surface of the portion 8. As shown in FIG. 7, the suction port 34IN is covered with a net-shaped suction port cover 39, and has a structure that prevents the harvested cereal and the like from entering the duct 34. A discharge port 34OUT, which is the rear end of the duct 34, is located at the front end of the handling chamber 16 of the threshing apparatus 3 in a state where the rear end of the feeder 6 is aligned with the front-rear position. Thus, the duct 34 is provided across the inlet 34IN and the threshing device 3.

Inside each of the left and right ducts 34, a wind raising mechanism 38 and a back wind prevention plate 40 are provided at a substantially intermediate position before and after the duct 34, and the threshing device removes air around the suction port including dust sucked from the suction port 34IN. 3 is sent through a duct 34. The reverse wind prevention plate 40 is formed of a bent plate-shaped member that matches the width of the duct, and is provided to prevent an airflow in the direction opposite to the dust transfer direction. The wind raising mechanism 38 includes a rotary blade 38a, a drive motor 38b, and a gear mechanism 38c. The rotary blade 38a has a structure having a plurality of plates radially around the rotation axis in the left-right direction of the machine body, and is housed in the duct 34. The rotary vane 38a is rotated by a drive motor 38b via a gear mechanism 38c protruding to the side of the outer wall 33a of the duct 34, so that the inside of the duct 34 (between the walls 33c) is passed from the suction port 34IN to the threshing device 3. It is possible to generate a flowing airflow.

  With the configuration described above, the dust at the entrance portion of the feeder 6 and its surroundings can be fed into the threshing device 3 through the wall 33c between the double side walls 33 of the feeder 6, that is, through the duct 34. On the other hand, inside the threshing device 3, there is a sorting wind for sorting the grains and a discharge wind by the dust blower 32 that sucks dust near the end of the sorting section and blows it down to the shredder discharge path of the chopper 31 from above. Therefore, by connecting the outlet 34OUT of the duct 34 to the front end portion of the threshing device 3, these airflows and the airflow flowing through the ducts 34 are continuous, and a series of air paths are formed. Therefore, if dust around the cutting pretreatment unit 8 is sucked from the suction port 34IN, the dust can be transferred to the rear of the machine by a continuous air flow, and the outside of the machine via the dust blower 32 located at the rear end of the machine. To be discharged.

  As described above, the dust that can enter the vicinity of the pre-cutting processing unit 8 that may hinder the harvesting operation can be effectively transferred and discharged to the rear of the machine body, so that the work efficiency can be improved by improving the work environment.

General side view of ordinary combine General plan view of ordinary combine Longitudinal side view of threshing device Feeder vertical side view Duct longitudinal side view Top view of feeder and duct Front view of duct inlet

Explanation of symbols

3 Threshing device 6 Feeder 8 Mowing unit 34IN Suction port

Claims (1)

A cutting portion for cutting the crop, a feeder for feeding the harvested to the threshing device is provided at the rear of the cutting portion,
A suction port for sucking dust is provided at a location adjacent to the end of the feeder on the cutting part side,
Of the outer walls of the feeder, the lateral wall portion is configured as an inner / outer double, and a dust transport duct following the suction port is formed between the inner / outer double lateral wall portions outside the crop transport path of the feeder. This is an ordinary combine that is configured by a space and is equipped with a wind-up mechanism that generates dust-transfer airflow in the duct.

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