JP2001028938A - Device for recovering lost grain for grain harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for recovering lost grains for grain harvesters, which carries the residual grains and those attached to the straw edges by compressed air for a harvester, where residual grains left by the discharged grains are recovered from a cleaning port and those remaining in the lateral auger and joint sections need time-consuming works and tend to be lost, and those attached to straw edges are also tend to be lost. SOLUTION: This device is provided with an air compressor, spiral axis 18d or joining axis 18e in the form of pipe for a lateral auger 18b or joint section 18c, respectively, and one or more ports 18f from which compressed air from the air compressor is ejected to blow the grains remaining within the lateral auger 18b or joint section 18c and thereby to help recover them from the cleaning port, and also with a guide also having the port 18f at the position facing the straw-discharging chain to blow the grains attached to straw edges and thereby to help recover them in the device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine, in which a traveling device is provided below the machine base, and a threshing device is provided on one upper side,
In the grain harvester, which has a grain storage tank on the upper side, an air compressor is mounted on the grain harvester to guide compressed air to the right place and collect lost grains such as residual grains and stuck grains in the machine. It relates to a recovery device.

[0002]

2. Description of the Related Art In a conventional grain harvester equipped with a grain storage tank, a grain discharge auger is provided in the grain storage tank. When the collecting operation is performed by opening the cleaning opening to collect the residual particles, the residual particles remain in the horizontal auger part and the succession part constituting the grain discharging auger, and the residual particles are completely recovered. This is troublesome and inconvenient. In addition, various measures have been taken to reduce the stinging grain at the tip of the spikelet, but there is still a loss of grain and the problem remains with insufficient collection, and improvement is required.

[0003]

Accordingly, the present invention has been made in view of the present situation as described in the preceding section, and has been described in connection with the present invention.
The present invention provides an apparatus for inducing compressed air and collecting it by wind power in a grain harvester in order to reduce residual oil and to collect residual particles in the machine and straw stings.

[0004]

According to the present invention, in order to solve the problems described in the preceding paragraph, a traveling device is provided below the machine base, a threshing device is provided on one upper side, and a threshing device is provided on the upper side. An air compressor was mounted on a grain harvester provided with a grain storage tank on the side, and the compressed air was guided through a specified piping route, and the remaining grains were collected by wind power.

[0005] In a grain harvester in which a traveling device is provided below the machine stand, a threshing device is provided on one upper side, and a grain storage tank is provided on the other upper side, an air compressor is provided. As a path for guiding the compressed air, the spiral shaft of the horizontal auger constituting the grain discharge auger attached to the grain storage tank and the inheriting shaft of the inheriting portion are formed in a pipe shape. One or more injection ports were opened at appropriate places so that the collection of residual particles could be facilitated by wind power even in places where it was difficult to collect residual particles, such as a horizontal auger part or a succession part.

In a grain harvester in which a traveling device is provided below the machine stand, a threshing device is provided on one upper side, and a grain storage tank is provided on the other upper side, an air compressor is provided. Is mounted, the spiral shaft of the horizontal auger and the inheriting shaft of the inheriting portion are formed in a pipe shape, the ejection port is opened, and the ejection port is provided with an ejection angle,
It is configured so that compressed air is injected in a predetermined direction, and the residual particles are collected from the place where it is difficult to collect by wind power, and the residual particles are collected from the cleaning port via a vertical auger. did.

[0007] In a grain harvester in which a traveling device is disposed below the machine stand, a threshing device is mounted on one upper side, and a straw chain is disposed behind the threshing device. The compressor is mounted, and an induction pipe connected to the air compressor is extended and extended to the inside of the straw cover, and one or more air outlets are opened in the induction pipe, and the air outlet is directed from the air outlet to the drainage spout head layer. Compressed air is blown into the spout, and the spikes are swung by the wind to blow down the stuck grains of the spout of straw, and the grains stuck in the straw are collected inside the machine to reduce the loss of grains. Configuration.

[0008] In a grain harvester in which a traveling device is disposed below the machine stand, a threshing device is mounted on one upper side, and a straw chain is disposed at the rear of the threshing device. The compressor is mounted, and a guide for adjusting the spike tip is connected to the guide tube connected to the air compressor, and the guide is formed into a pipe so that the guide is opposed to the drain chain. The above-mentioned injection port is opened, the compressed air is injected from the injection port to the spikelet head layer, the spoiler tip layer is adjusted by the guide to fix the turbulence, and the straw is further discharged by wind power. It was configured to collect the stabbed grains.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a horizontal sectional view of a horizontal auger part and a succession part of a grain discharge auger which is a main part of the present invention, and illustrates a guide path of compressed air and a configuration of a grain discharge auger. is there. FIG. 2 is a cross-sectional view of another alternative that is a main part of the present invention, and illustrates a cross-sectional view of another alternative configuration for introducing compressed air from the throwing side of the grain discharge auger. FIG. 3 is an overall side view of a combine according to an embodiment of the present invention, and FIG. 4 is an overall plan view of a combine according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of a configuration in which air is conveyed on the side of the throwing port of the grain discharge auger, and illustrates another configuration using compressed air. FIG. 6 is a longitudinal section of an intermediate metal connecting the auger transport section and the air transport section in the configuration of FIG. FIG. 7 is a cross-sectional view of the threshing apparatus. FIG. 8 is a horizontal sectional view of the threshing apparatus.

An overall configuration of a combine according to an embodiment of the present invention will be described with reference to FIGS. The machine (2) is placed on the traveling device (1) of the crawler system, and the raising and cutting device (A) can be raised and lowered at the front end of the machine (2) via the hydraulic device (17). This raising and reaping device (A) projects a weeding board (3) at the front end to divide the culm, and a raising device (4) is erected at a rear portion thereof. The raising tine of 4) orbits and raises the grain stalk, and cuts off the root of the plant with the cutting blade (5) arranged at the rear of the weeding board (3), and the upper conveying device,
It is transported to the rear by the lower transport device and the vertical transport device (6).
From the end of the vertical transport device (6), the root of the grain culm is passed on to the feed chain (7), and the grain culm is transported into the threshing device (B). Further, a straw chain (26) is provided at the end of the feed chain (7), and a straw cutter device (53) is provided below the rear of the straw chain (26). The straw is cut and released into the field.

At the side of the threshing device (B), a grain storage tank (12) for storing sorted kernels is provided, and a driver's seat (19) is provided in front of the grain storage tank (12). A vertical auger (18a) of a grain discharge auger (18) is provided upright at the rear, and a discharge conveyor (13) is provided at the bottom of the grain storage tank (12). It is erected in the front-rear direction and is rotated by power to transfer grains. Further, power is transmitted from the discharge conveyor (13) to the grain discharge auger (18), and the grains in the grain storage tank (12) are transferred from a tip of the horizontal auger (18b) to a truck or the like. It is possible to discharge.

The threshing unit (20) of the threshing apparatus (B) is shown by broken lines in FIGS. 3 and 4, and will be described in detail with reference to FIGS. 7 and 8. (22) is a handling room in which the built-in shaft is mounted in the front-rear direction, and (23) is the handling room (21).
A processing cylinder (24) is mounted on a built-in shaft in a processing chamber arranged horizontally in parallel with the processing chamber (21). Receiving nets (27a) and (27b) are mounted in the handling room (21) and the processing room (23), respectively, with a relative gap to the handling drum (22) or the processing drum (24).

Further, below the handling room (21) and the processing room (23), a sorting device (30) is provided as shown in FIGS. 3 and 7, and the sorting device (30) is a swing sorting device. Wind selection unit (33) consisting of specific gravity selection by unit (31) and compressed air fan (32)
In this way, the first thing that has been threshed, the second thing that has not been completed, straw waste, and the like are sorted out by wind sorting. A dust exhaust chamber (34) is integrally formed behind the handling chamber (21) and above the rear part of the sorting device (30), and a suction dust exhaust fan is provided on the outlet outside wall of the dust exhaust chamber (34). A fan case (44) containing (43) is mounted.

On the other hand, the wind selection unit (3) shown in FIGS.
A pressure fan (32) is installed in the front part of 3),
The sorting wind is blown toward the dust chamber (34), and the rocking sorting unit (31) is provided above the threshing unit (2) as shown in FIGS.
0) Received threshing material falling from the threshing unit (20) swinging in the front-rear direction and swinging in the front-rear direction, and sorting by specific gravity. Collect in a gutter (36). The first gutter (36) is bridged in the left-right direction, and is configured to transfer the collected grains to the Glen tank (12) via the first conveyor which is internally shafted.

A second gutter (37) is bridged near the back of the first gutter (36) in parallel, and threshing is insufficient while being separated from straw waste by the second gutter (37). A group of kernels with various branch spikes was collected and handled through a second conveyor with a shaft inside.
It is reduced to 1) and treated again to recover only the grains. The grains reprocessed by the processing cylinder (24) leak from the receiving net (27b) and are collected in the first gutter (36), and the dust is discharged from the dust outlet to the swing sorting unit (31). It is returned to the rear and re-sorted into grains and straw waste. The straw dust is repelled by the swinging motion of the sieving wire (31e) in the dust chamber (34), and is passed through a suction dust fan (43) mounted on the outlet outside wall of the dust chamber (34). Fun case (44)
From the aircraft.

The structure of the swing sorting section (31) is such that the Glen pan (31d) extends rearward and is mounted on the entire width of the handling chamber (21) and the processing chamber (23). 31d) Graininess from the end to the rear
The upper part (31b) is connected, and further the upper part (31b)
Below the b), a lower portion of the grinder (31c) is provided, and the upper and lower two stages of the grens have a space and are superposed. On the other hand, a chaff sheave (31a) is disposed above the grain sheave (31b), and the chaff sheave (31b) is provided.
A sieve line (31e) that independently swings in addition to the swinging movement of the swinging sorting unit (31) is provided continuously obliquely upward from the rear of (a).

An upper surface cover (38) for covering the upper surface of the handling room (21) is turned up and down via a shaft pivotally attached to the handling room side plate so as to be freely opened and closed. A dust chamber (34) is integrally formed above the rear part of the sorting device (30) behind the handling chamber (21), and an upper part of the dust chamber (34) is a final part of the straw discharging step. A straw chain (26) is provided, and the straw chain (26) is configured so that the straw is inherited by a straw cutter device (53) arranged at the rear.

Further, the upper surface of the dust chamber (34) is opened as a fourth port in order to collect grains contained in the straw conveyed by the straw chain (26). A straw cover (39) is provided above the fourth opening, and the straw is guided to the inside of the straw cover (39) while being guided by the straw cutter device (53). It has become.

The configuration of the grain discharge auger (18) and the compressed air guiding path according to the main part of the present invention will be described in detail with reference to FIGS. An air compressor (28) is disposed in an engine room below a driver's seat (19), and one side of a threshing device (B) and a grain storage tank (12) are provided from the air compressor (28). A compressed air guide pipe (29a) is provided in the gap between the auger (18b) and the vertical auger (1) of the grain discharge auger (18).
8a), and is pivotally connected via a metal to the built-in hollow spiral shaft (18d) and the inherited shaft (18e), and to the two shafts (18d) (18e). Has an opening (18f) for injecting at least one compressed air in the direction of the arrow (a) to form a guide path.

The spiral shaft (18d) and the transfer shaft (1)
The jet port (18f) opened at 8e) holds a backward tilt angle in a direction opposite to the grain discharge direction, and compressed air is injected toward the inheriting portion (18c) by the backward tilt angle, so that the lateral auger is formed. (18b) is transferred to the inheriting portion (18c) in the direction of the inheriting portion (18c), and the residual particles in the inheriting portion (18c) are further fed by wind power via the vertical auger (18a) to the grain storage tank ( 12)
And collect them from the cleaning opening.

Further, as another alternative related to the main part of the present invention, a grain discharge auger (18) and a compressed air guide pipe (29a)
Will be described with reference to FIG. Horizontal auger (18b)
Of the compressed air guide pipe (2
9a) is extended and connected to the end of the hollow spiral shaft (18d) of the lateral auger (18b). The hollow spiral shaft (18d) is provided with a jet port (18f).
8f) holds the backward tilt angle in the direction opposite to the grain discharge direction,
Compressed air is injected in the direction of the arrow (b) to transfer the residual particles in the horizontal auger (18b) and the transfer portion (18c) by wind power, and collect them in the grain storage tank (12) as described above. , So that it is collected from the cleaning port.

The structure of the grain discharging auger (18) is shown in FIG.
As shown in FIGS. 3 and 4, a horizontal auger (18b) is connected to a vertical auger (18a) erected behind the grain storage tank (12) via a transfer portion (18c). ) Are connected in series, and each has a built-in vertical spiral, inherited spiral or horizontal spiral.

As shown in FIGS. 3 to 5, the horizontal auger (18b) is long and is divided into two parts in front and rear.
8g) and screwed together to form an integral structure.
A discharge conveyor (13) erected in the front-rear direction at the bottom of the grain storage tank (12) is provided with a grain storage tank (1).
The grain stored in the vertical auger (18a) erected behind 2) is inherited, and the vertical auger (18a) is inherited by the inheriting portion (18).
The grain is passed on to the horizontal auger (18b) via c), and the horizontal auger (18b) discharges the kernel from the casting hole (18h) at the tip thereof.

In the present invention, in addition to the above-described general configuration, another configuration is described. As shown in FIGS. 5 and 6, the intermediate metal (18) of the horizontal auger (18b) is divided into two parts.
g) The conventional spoiler is abolished on the side of the throwing port (18h), and the grain is transferred by wind power using compressed air. The base part of the lateral auger (18b) is The built-in horizontal spiral is supported by an intermediate metal (18 g) via a ball bearing, and an inner cylinder (18j) is fixed to the other side of the intermediate metal (18g) with bolts.
A guide ring (R) is fitted around the outer periphery of 8j), and an outer cylinder (18m) is slidably mounted with the guide ring (R) interposed.

On the other hand, a plurality of ends of a compressed air guide pipe (29a) piped from the air compressor (28) to the grain storage tank (12) on one side of the threshing device (B) are provided. Into the perforations made of the same plurality of the intermediate metal (18g), and insert and fix the pipe openings in the grain discharge direction so that compressed air is injected inside the inner cylinder (18j). On the other hand, a plurality of lead plates (18n) are additionally provided at appropriate positions inside the inner cylinder (18j).
The compressed air injected to the curved surface of the plate (18n) is applied, and the airflow direction is rotated, and at the same time, the grains are discharged while being spirally rotated, so that the linear impact is reduced.
Moreover, it enables smooth grain air transportation without residual grains.

Further, the inner cylinder (18j) and the outer cylinder (18
In the case of m), the entire length can be expanded and contracted by sliding the motor (M) with the guide ring (R) interposed.
More specifically, a motor (M) is provided in the vicinity of the intermediate metal (18g), and a driving screw (18p) is protruded from the motor (M) so that the female screw (18q) is provided. When the motor (M) is started by screwing and fixing the female screw (18q) to the outer cylinder (18m), the drive screw (18p) and the female screw (18q) The outer cylinder (18m) becomes freely retractable with respect to the inner cylinder (18j) by the cooperation of (2), and the entire length of the horizontal auger (18b) expands and contracts. In the embodiment of the present invention, the guide ring (R) is composed of a first guide ring (r1) and a second guide ring (r2), and the first guide ring (r1) is an outer cylinder (18m). And the second guide ring (r2) is fixed to the inner cylinder (18).
j) side to secure the support of the outer cylinder (18m) with respect to the inner cylinder (18j).

On the other hand, as described in the overall structure, the straw conveyed by the straw chain (26) is a straw cover.
Straw cutter device (5) guided inside (39)
The air compressor (28) is mounted as described above, and the guide pipe (29) connected to the air compressor (28) is placed inside the straw cover (39). The guide pipe (29) is opened with an air outlet (35), and compressed air is injected from the air outlet (35) in the direction of the spikelet tip layer to blow the sting particles at the spikelet tip. Drop it and collect it inside the machine from the fourth port opening below the transport path. Then, the collected stabbing grains fall on the swing sorting section (31), are sorted and sent to the grain storage tank (12) via the first gutter (36).

Further, a guide tube (29) connected to the air compressor (28) is provided with a guide (4) for adjusting the spike tip.
0), the hollow guide (40) is hollowed, one or more injection ports (40a) are opened at appropriate positions, and the injection ports (40a) are confronted with the straw chain (26). )
Compressed air can be sprayed toward the spikelet head, so that the turbulence of the spikelet layer can be adjusted by the guide and the collection of grains stuck in the straw can be more effectively recovered by wind power. I did it.

With the above arrangement, a compressed air guide pipe (29a) connected to the air compressor (28) is provided, and the compressed air guide pipe (29a) connects the grain discharge auger (18). From the start or end of the horizontal auger (18b), the pipe-shaped spiral shaft (18d) and the transfer shaft (18e) of the transfer portion (18c) are pivotally connected via metal to the two shafts (18d). Compressed air is injected from one or more injection ports (18f) opened at the appropriate location in (18e), and the residual particles in the lateral auger (18b) and the transfer section (18c) are collected by wind power.

Further, the intermediate metal (18g) of the horizontal auger (18b), which is divided into two parts because of its long size, is used to throw the spout (18).
h) The conventional method in which the spiral part is eliminated from the side part and the kernel is discharged by the wind using compressed air, and
Since the tip side portion of the mower (18b) has no spiral portion, in addition to the weight reduction, the residual particles are eliminated and the residual particles of the entire lateral auger (18b) are reduced.

Further, as described above, the squeezing guide (40) disposed opposite the straw chain (26) is formed in a pipe shape, and is also used as a compressed air ejection pipe. Compressed air can be injected from (40a) toward the spikelet head layer, and the turbulence of the spoiler head layer is adjusted by the canning guide (40). It can be more effective.

[0032]

As described above, the present invention has the following effects. A traveling device (1) is disposed below the machine stand (2), a threshing device (B) is disposed on one upper side, and a grain storage tank (12) is disposed on the other upper side. In the grain harvester, an air compressor (28) is mounted, the compressed air is guided through a specified piping route, and the residual particles are collected by wind power. Even if you drive, you couldn't collect enough
The residual particles in the mower (18b) and the inherited portion (18c) are collected by the wind force, thereby reducing the lost particles and improving the cleaning property.

A traveling device (1) is disposed below the machine base (2), a threshing device (B) is provided on one upper side, and a grain storage tank (12) is provided on the other upper side. In the grain harvester disposed, an air compressor (28) is mounted, and as a path for guiding the compressed air, the grain storage tank (12)
Horizontal oak which constitutes a grain discharge auger (18) attached to
The spiral shaft (18d) of the mower (18b) and the transfer portion (18
Since the transfer shaft (18e) of (c) is formed in a pipe shape and one or more ejection ports (18f) are opened at appropriate locations to form a path, the piping structure to the horizontal auger (18b) and the transfer portion (18c) is reduced. In addition, the injection of compressed air from the axis of the spiral to the outer edge facilitated the recovery of the residual particles.

A traveling device (1) is disposed below the machine base (2), a threshing device (B) is provided on one upper side, and a grain storage tank (12) is provided on the other upper side. In the installed grain harvester, the air compressor (28) is mounted and the grain discharging machine is installed.
The spiral shaft (18d) of the lateral auger (18b) and the inheriting shaft (18e) of the inheriting portion (18c) which constitute the mower (18) are pipe-shaped guide paths for compressed air. And the ejection port (1) opened to the inheritance shaft (18e).
8f), the compressed air is sprayed in the direction of the vertical auger (18a), which facilitates the recovery of the compressed air. The residual particles were transferred by wind power to facilitate the operation of collecting the residual particles from the cleaning port via the vertical auger (18a).

A traveling device (1) is disposed below the machine stand (2), a threshing device (B) is mounted on one upper side, and a threshing device (B) is disposed at the rear of the threshing device (B). In the grain harvester provided with the straw chain (26), the air compressor (28) is mounted, and the guide tube (2) connected to the air compressor (28) is mounted.
9) is extended to the inside of the straw cover (39), and one or more air outlets (35) are opened in the guide pipe (29), and compressed from the air outlet (35) in the direction of the straw straw tip layer. It is configured to inject air, blow down the sting particles at the spike tip, and collect it inside the machine. It was possible to reduce the lost grains by collecting the stabbed grains in the machine.

A traveling device (1) is disposed below the machine stand (2), a threshing device (B) is mounted on one upper side, and a threshing device (B) is disposed at the rear of the threshing device (B). In a grain harvester provided with a straw chain (26), an air compressor (28) is mounted and an induction pipe (29) connected to the air compressor (28).
In addition, connect the canning guide (40) to prepare the spikelet tip,
The canning guide (40) is formed in a pipe shape so as to face the straw chain (26), and one or more injection ports (40) are put in place.
a) is opened, and the compressed air is jetted from the jet port (40a) to the waste spike tip layer. Therefore, the canning guide (40) arranges the waste spike tip layer, corrects the turbulence, and further increases the wind force. As a result, the grains stuck in the straw could be blown down, and the accuracy of collecting the grains stuck in the straw into the machine could be improved.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a horizontal auger part and a transfer part which are main parts of the present invention.

FIG. 2 is a cross-sectional view of a grain discharge auger, which is a main part of the present invention, on the side of a throwing port.

FIG. 3 is an overall side view of a combine according to an embodiment of the present invention.

FIG. 4 is an overall plan view of a combine according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a throw-side telescopic structure of a lateral auger, which is another alternative related to the main part of the present invention.

6 is a cross-sectional view of an intermediate metal between the auger transport unit and the air transport unit in the configuration of FIG.

FIG. 7 is a cross-sectional view of a threshing apparatus according to a main part of the present invention.

FIG. 8 is a horizontal sectional view of a threshing apparatus according to a main part of the present invention.

[Explanation of symbols]

 Reference Signs List A Raising and reaping device B Threshing device 1 Traveling device 2 Machine base 4 Raising device 18 Grain discharge auger 18a Vertical auger 18b Horizontal auger 18c Transfer section 18d Spoiler shaft 18e Transfer shaft 18f Spout 18g Intermediate metal 18h Casting port 18j Inner cylinder 18m Outer cylinder 18n Lead plate 18p Drive screw 18q Female screw 20 Threshing unit 29 Induction tube 29a Compressed air induction pipe 30 Sorting device 31 Swing sorting unit 33 Wind sorting unit 35 Blow port 40 Smoothing guide 40a Injection port M Motor R Guide ring r1 First guide ring r2 Second guide ring

Continued on the front page (72) Inventor Masahiko Yamaguchi 428 Enami, Okayama City, Okayama Pref. KC05 KE04 LA07 LA22 LE02 LE03 LE04 LE18 LR02 LR08 LR13 LR19

Claims (5)

[Claims] A traveling device (1) is disposed below a machine stand (2), a threshing device (B) is provided on one upper side, and a grain storage tank (12) is provided on another upper side. ), The air compressor (28) is mounted on the grain harvester, the compressed air is guided through a specified piping path, and the residual grains are collected by wind power. Of lost grains in a grain harvester. 2. A traveling device (1) is provided below the machine stand (2), a threshing device (B) is provided on one upper side, and a grain storage tank (12) is provided on the other upper side. ) Is installed in the grain harvester, an air compressor (28) is mounted thereon, and the grain storage tank (12) serves as a path for guiding the compressed air.
The spiral axle (18d) of the horizontal auger (18b) constituting the grain discharging auger (18) attached to the
A lost grain recovery device in a grain harvester, characterized in that the inherited shaft (18e) of 8c) is formed in a pipe shape and one or more injection ports (18f) are opened at appropriate locations to form a path. A traveling device (1) is disposed below the machine stand (2), a threshing device (B) is provided on one upper side, and a grain storage tank (12) is provided on the other upper side. ), The air compressor (28) is mounted, and the spiral shaft (18d) of the horizontal auger (18b) and the transfer shaft (18e) of the transfer unit (18c) are mounted as described above. ) Is formed in a pipe shape, the ejection port (18f) is opened, the ejection port (18f) is set at an ejection angle, and compressed air is ejected in a predetermined direction. Lost grain recovery device in grain harvester. 4. A traveling device (1) is disposed below the machine stand (2), a threshing device (B) is mounted on one upper side, and a rear portion of the threshing device (B) is provided. Is the straw chain (26)
In the grain harvester provided with the air compressor, the air compressor (28) is mounted, and the guide pipe (29) connected to the air compressor (28) is extended to the inside of the straw cover (39). , One or more air outlets (35) are opened in the guide tube (29),
Loss particles in a grain harvester, characterized in that compressed air is injected from the blower port (35) in the direction of the straw ear tip layer to blow down stuck grains at the tip of the straw ear and collect it inside the machine. Collection device. 5. A traveling device (1) is disposed below the machine stand (2), a threshing device (B) is mounted on one upper side, and a rear portion of the threshing device (B) is provided. Is the straw chain (26)
In the grain harvester provided with the air compressor (28), the air compressor (28) is mounted, and the guide tube (29) connected to the air compressor (28) is used to adjust the spout tip to the guide tube (40). And the guide (40) is formed into a pipe so as to face the straw chain (26), one or more injection ports (40a) are opened in place, and compressed air is supplied from the injection ports (40a). 5. The apparatus for recovering lost grains in a grain harvesting machine according to claim 4, wherein the apparatus is configured to inject to the straw tip layer.