JPH10150840A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine for preventing clogging of a threshing net and preventing decline of threshing performance in harvesting wet grain culms. SOLUTION: Since air sent from a blower 74 is jetted from the symmetrical positions of a threshing chamber entrance along the inner periphery of the threshing net 34, even in the case that grains whose surface is wetted by moisture in a wet threshing state are stuck to the threshing net 34 and the threshing net 34 is clogged, for instance, high-temperature air is jetted and blown along the inner periphery of the threshing net 34, the moisture of the grains is dried and the clogging of the threshing net 34 is prevented. By turning the jetting direction of the sending air to the opposite direction of the rotating direction of a threshing cylinder, in the case that the sending air immediately after being jetted is composed of the air at a high temperature for instance, the temperature is lowered and it is turned to a low temperature since the temperature is taken by the latent heat of the moisture drying of the surface of the wet grains as separating from an air sending start position and the moisture of the grains advanced in the same direction as the rotating direction of the threshing cylinder is dried by a jet whose temperature is gradually raised from the low temperature to the high temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing apparatus mounted on a combine or a harvester.

[0002]

2. Description of the Related Art FIG. 1 is a side view of a combine for harvesting cereals, FIG. 2 is a schematic side view showing a harvesting device and a feeding and conveying device and the like inside the combine, and FIG. 3 is a top view of the combine. FIG. 4 is a plan view of a main part of the threshing device 15 taken along line BB of FIG.

A traveling device 4 having a pair of left and right traveling crawlers 3 traveling on the soil surface is provided below the body frame 2, and a reaper 6 and a supply / transport device 7 are provided at the front end of the body frame 2. ing. The cutting device 6 includes a weeding tool 8 for weeding the planted grain culm, a raising case 9 for causing the planted grain culm, a cutting blade 11 for cutting the planted grain culm, and the cutting blade 11. It comprises a stock transfer apparatus 12 for holding the culm and transporting it backward. Behind the stock carrier 12, there is provided a supply carrier 7 that takes over and transports the grain stalks conveyed from the stock carrier 12.

[0004] The reaper 6 is supported by a reaper supporting frame 13 which moves up and down about a fulcrum above the traveling device 4 at a substantially right and left intermediate portion. It is configured to move up and down together with the frame 13.

[0005] Above the machine frame 2, a threshing device 15 having a feed chain 14 for taking over and transporting the grain culm conveyed from the supply / conveyance device 7, and a grain that has been threshed and sorted by the threshing device 15 is provided. A grain storage device 10 (FIG. 3) for temporarily storing is placed. Behind the threshing device 15, there is provided a cutter 17 for cutting the culm conveyed from the straw chain 69 (FIG. 4). In addition, other working machines other than the cutter 17, such as a knotter for binding the culm, may be mounted.

As shown in FIGS. 1 and 3, a grain storage device 1
A vertical auger 18 is erected in the rear part of the vertical auger so as to be rotatable in the left-right direction. A discharge auger 19 having a length substantially equal to the length of the body in the front-rear direction is connected to the upper end of the vertical auger 18 and rotated in the vertical direction. The grains, which are provided as possible and are stored in a tank (not shown) of the grain storage device 10, are discharged from the discharge auger 19 to the outside.

The feed chain 14 supplies a grain stick (b) (FIG. 5) with grains to a threshing apparatus 15, and the threshing apparatus 1
5 threshes a grain from a grain rod (b) as described later in detail, sorts and separates the grain, and conveys it to a tank in the grain storage device 10, and cuts the grain (b) to a field. discharge. These operations are performed by the operation device 20 provided on one side of the combine 1.

FIG. 5 is a threshing apparatus 15 taken along the line CC of FIG.
6 is a cross-sectional side view of a main part of the threshing device 15 taken along the line DD in FIG.

The threshing unit 15 will be described in detail with reference to FIGS.
9, a large number of saw teeth 29a are implanted in the handling cylinder 29. 4 and 6 by the feed chain 14.
5 is received in the handling room entrance 26a (FIG. 5), and the handling drum is rotated in the handling room 26 in the direction of arrow B in FIG. 2
9 by means of the nine saw teeth 29a and the feed chain 14 in FIG.
Is threshed by sawing action due to relative motion with a grain rod (b) transferred in the direction of arrow A, and grains and straw chips are passed through the handling net 34 in the direction of arrow C1 (FIG. 5). Take it. Since the oscillating rack 21 swings up and down and back and forth with the fulcrum 21a (FIG. 6) of the swinging shelf 21 as the center of swing, the grain moves in the direction of arrow D in FIG. , The grains having a high specific gravity pass through the sheave 22 and the sorting net 23 in the direction of arrow E in FIG. Transported to the fryer.

[0010] The second grain and the straw chips on the rocking shelf 21 are blown off by the blowing of Karino 39, and move on the sheave 22 as shown in FIG.
Move in the direction of arrow D, and the second grain having a small size falls on the straw rack 16 in the direction of arrow G to fall on the second shelf 5.
8 and is conveyed to the second fryer 60 by the second spiral 59.

The second grain is a mixture of normal grains, branch stalks, straw chips and scorpion grains having normal grains stabbed in the straw chips, as shown in FIG. It is pumped up by the second-floor helical cylinder spiral 60a of the cereal cylinder 60, and is discharged upward from the second processing chamber 27 from the second-fry cylindrical discharge port 60b. The second processing cylinder 30 at the lower part of the second processing chamber 27 is rotated in the direction of arrow J in FIG. 5 by a driving device (not shown), and the second kernels are planted in the second processing cylinder 30 by a number of saw teeth. The second grain is separated while traveling in the direction of arrow I while colliding with 30a, and the grain passes through the second processing cylinder receiving net 35 in the direction of arrow C2 and falls onto the swinging shelf 21.

FIG. 4 shows a long rod that has been moved through the handling chamber 26 in the direction of arrow A in FIG. In the direction of the arrow A1, and then the straw chain 69 and the straw tip chain 7
It is conveyed while being clamped at 0, thrown into straw cutters 72 and 73, cut, and released to the field.

The handling room 26 advances in the direction of arrow A, and
Of the cereal rods (b) from which the grains reaching the end point are threshed, short ones such as straw waste are thrown in the direction of arrow A2, and enter the dust treatment chamber 28 (FIGS. 4, 5, and 6). Dust treatment chamber 28
In the direction of arrow K (FIGS. 4 and 6), and
In FIG. 8, the second kernel which has been cut by a large number of saw teeth 31a planted in the dust processing cylinder 31 (FIG. 6) which rotates integrally with the second processing cylinder 30 (FIGS. 5 and 6) and has remained. Pass through the dust receiving cylinder receiving net 36 in the direction of arrow C3 in FIG.

The upper part of the dust discharge processing chamber 28 and the swinging shelf 21 communicates with a cross flow fan 71 (FIGS. 4 and 6) provided at the rear of the threshing device 15, and the blades of the cross flow fan shown in FIG. When the car 71a is rotated, the air containing dust, the stalks, and the dust above the rear part of the dust discharge processing chamber 28 and the swinging shelf 21 is sucked, and the combine 1 in the direction of arrow L in FIG. Is released to the outside.

[0015]

The harvesting operation of the combine 1 is often used for harvesting in wet fields such as wetlands, and for harvesting grains and rods (b) during or after rain. In these cases, in the handling room 26 (FIG. 7) of the threshing device 15 (FIG. 7), the grain, branch stalk, straw waste and sari grain all have a high moisture content, and the surface is wet with moisture. Are attached to each other and
(FIG. 7), and if the adhesion becomes remarkable, the handling net 34 is clogged and the grain does not pass, and the deposited grain hinders the rotation of the handling cylinder 29 (FIG. 7) and lowers the threshing performance. The normal operation of the combine 1 is hindered. Therefore, an object of the present invention is to provide a combine that prevents clogging in a handling net and does not reduce threshing performance even when a wet grain rod is harvested.

[0016]

The above object of the present invention is attained by the following constitution. In other words, a grain stalk handling port is provided on the side wall of a handling room that is partially or wholly surrounded by a handling net through which the grains pass and in which the handling cylinder is rotatably mounted on the interior shaft, and is provided along the grain stalk handling port. A conveying device for nipping and transporting the stem side of the cereal stem, and an air outlet for guiding air in a direction opposite to the rotation direction of the handling cylinder near the outer peripheral wall of the handling chamber on the opposite side to the transport device This is a threshing device provided with.

According to the present invention, the air from the air blowing means is configured to be blown from the opposite position of the conveying device along the inner periphery of the handling net in a direction opposite to the rotation direction of the handling drum.
Even when the grain whose surface is moistened with moisture in the wet state adheres to the net and clogs the net,
For example, high-temperature air can be blown and blown along the inner periphery of the handling net to dry the moisture of the grains and prevent the handling room receiving net from being clogged.

The direction of the blown air is opposite to the direction of rotation of the handling cylinder. If the blown air immediately after the blowout is made of, for example, high-temperature air, the temperature becomes wet as the distance from the blowing start position increases. The temperature decreases to a low temperature due to the latent heat of moisture drying on the surface of the grain, but the grain that proceeds in the same direction as the rotation direction of the handling cylinder is moistened by a jet that gradually rises from a low temperature to a high temperature. Is dried, and finally comes into contact with the hottest air near the starting position of the blast, so that the temperature change for the grain is gentle and does not adversely affect the quality of the grain, and the wet grain is finally The moisture is dried in contact with the hottest air, so that it does not easily pass through the net and clog the net.

[0019]

Embodiments of the present invention will be described. Embodiment 1 An embodiment of the present invention will be described with reference to FIGS.
This is an improvement of the structure of the combine shown in FIGS. 1 to 7 described in the related art, and the same components as those of the combine shown in FIGS. 1 to 7 are denoted by the same reference numerals and description thereof will be omitted. 8 is an elevational sectional view of a main part of the threshing apparatus 15 of the present embodiment corresponding to FIG. 5 of the prior art, and FIG. 9 is a partially cutaway perspective view near a handling room of the threshing apparatus 15 of the present embodiment. is there.

The blower 74 opens an air suction port (not shown) near the muffler of the engine (not shown) of the combine 1 to draw in high-temperature air, and the air is blown through the blower pipe 75 at the inner circumference of the handling net 34. The air is blown to the handling room frame 76 on the opposite side of the room entrance 26a. Handling room frame 76
Have a number of nozzles 76a indicated by arrows M shown in FIGS.
Direction, ie, the rotation direction of the handling cylinder 29 (arrow B in FIG. 8).
Direction), so that the hot air sucked in near the muffler is blown out along the handling net 34 in the handling chamber 26 between the handling drum 29 and the handling net 34. Note that, instead of the blower 74, a configuration may be adopted in which the wind from Karino 39 (see FIG. 6) is guided and blown.

The grain after being threshed by the sawing action of the saw teeth 29a contains high moisture in a so-called wet sawing state, and adheres to the handling net 34 because the surface is wet by the moisture. Even if it clogs
With the above configuration, a large number of nozzles 76
A high temperature air sucked near the muffler from a.
Is blown into the handling chamber 26 between the handle and the handling net 34, and the direction of the blown blow is the direction (arrow M) opposite to the rotational direction (arrow B direction) of the handle cylinder 29, so that the high temperature immediately after the nozzle 76a is blown out. The temperature of the air decreases due to the latent heat of moisture drying on the surface of the wet grain and decreases as the distance from the nozzle 76a decreases, but proceeds in the same direction as the rotation direction (B) of the handling cylinder 29. The grain is dried by a jet that gradually rises in temperature from a low temperature to a high temperature, and finally comes into contact with the hottest air near the nozzle 76a. The moist kernels are less likely to have adverse effects, and the moist kernels will eventually come into contact with the hottest air and become dry, and easily pass through the net 34 and cause the net 34 to become clogged. Disappears.

Embodiment 2 A second embodiment of the present invention will be described with reference to FIG. 10, which is an improvement of the combine structure of FIGS. 1 to 7 described in the prior art. The same parts as those of the combine are denoted by the same reference numerals, and description thereof will be omitted.
FIG. 10 is an elevational sectional view of a main part of the threshing apparatus 15 of the present embodiment corresponding to FIG. 5 of the prior art.

In this embodiment, a pipe-shaped handling room frame 77-1, 77-2, 77 for supporting the handling net 34 on the outer periphery of the handling room.
-3 and 77-4 are handle cylinders 29 at appropriate intervals on the outer circumference of the handle chamber.
Is provided in parallel with the rotation axis of the handle room frame 77, and one or more of the handling chamber frames 77 are handled in the same direction (arrow N direction) as the rotation direction of the handling cylinder 29 (arrow B direction). A large number of nozzles (not shown) are provided so as to blow toward the inner circumference of 34, and the air suction port of a blower (not shown) is opened near the muffler of the combine 1 engine to draw in high-temperature air, and The air is blown to the handling room frames 77-1, 77-2, 77-3 provided with the nozzles via the nozzles. However, since the installation position of the handling room frame 77-4 is at the upper end of the handling room, the direction of air blowing from the nozzle is set to the direction opposite to the rotation direction of the drum 29.

With such a configuration, in a so-called wet sawing state, straw waste containing high moisture generated when the grain is threshed by the sawing action of the saw teeth 29a and whose surface is wetted by moisture is provided. May adhere to the handling net 34 and clog the handling net 34,
High-temperature air sucked from the many nozzles of the handling chamber frame 77 near the muffler is blown and blown into the handling chamber 26 between the handling drum 29 and the handling net 34, and the direction of this blown air (in the direction of arrow N).
Is in the same direction as the rotation direction of the handling cylinder 29 (the direction of the arrow B), so that the straw net is blown off while drying from the surface together with the circumferential wind of the handling cylinder 29, and the handling net 34 is not clogged.

Embodiment 3 A third embodiment of the present invention will be described with reference to FIGS. 11 and 12. This embodiment is obtained by improving the structure of the combine shown in FIGS. 7 are denoted by the same reference numerals as those of the combine components in FIG.

FIG. 11 is an elevational sectional view of a main part of a threshing apparatus 15 of the present embodiment corresponding to FIG. 5 of the prior art, and FIG. 12 is a sectional view of the threshing apparatus 15 of the present embodiment viewed from the bottom of the handling room. It is a partially cutaway plan view of the vicinity.

The handle cylinder 2 is located outside the vicinity of the joint between the handling net 34, the second processing cylinder receiving network 35, and the dust processing cylinder receiving network 36 (FIG. 6).
9, a blower nozzle pipe 78 is provided in parallel with the rotation axis of the blower, and air blown from a blower (not shown) is blown from a number of air injection nozzles 78a and 78b of the blower nozzle pipe 78 to the handling net 34 and the second processing cylinder. In this configuration, the fuel is sprayed in the directions of the arrows O1 and O2 so as to blow against the receiving net 35 and the dust receiving cylinder receiving net 36, respectively.

With this configuration, straw chips mixed in the grain after threshing by the sawing action of the saw teeth 29a contain high moisture in a so-called wet sawing state, and the surface is wetted by moisture, so that it is handled. Net 34, second processing cylinder receiving net 35
In addition, even if it adheres to the dust treatment cylinder receiving net 36 and clogs the handling net 34, the second treatment drum receiving net 35, and the dust treatment drum receiving net 36, the blowing wind in the direction of the arrow O <b> 1 34
Is blown along the outside of the cylinder, and the jet wind in the direction of the arrow O2 is
Are blown along the outside of the mesh, and these jets rub against the strands and / or mesh holes of the respective receiving nets 35 and 36 to generate a vortex, and the vortex flows on the strands of the receiving nets 35 and 36. In addition to pushing or pulling out straw debris that becomes entangled or clogged in the net hole, it acts to clear and prevent clogging of the receiving nets 35, 36,
Any of the blasts promotes the diffusion of the waste and prevents the waste and the grains from adhering to each other to form a lump, and can act to improve the wind sorting by Karamin 39.

In this embodiment, as in the first embodiment, it is preferable that the suction port of the blower sucks high-temperature air in the vicinity of the muffler of the engine. It is also possible to inhale outside air.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIG. 13, which is an improvement of the combine structure shown in FIGS. 1 to 7 described in the prior art. The same parts as those of the combine are denoted by the same reference numerals, and description thereof will be omitted.
FIG. 13 is an elevational sectional view of a main part of the threshing apparatus 15 of the present embodiment corresponding to FIG. 5 of the prior art.

In this embodiment, the nozzle branch pipe 81 is connected to the swinging shelf 2
One or more tubes are provided in the direction perpendicular to the rotation axis of the handling cylinder 29 along the lower surface of the air blower 1, and air is blown from the blower blower 79 to the nozzle branch tube 81 via the blower tube 80. Since each nozzle branch pipe 81 is provided with a plurality of nozzles 81a having a plurality of upward ejection holes, the air blown from the blower blower 79 is ejected from the nozzles 81a in the direction of the arrow P, and the handling net 34 and the second processing cylinder receiver are provided. Net 35 and Dust Treatment Body Receiving Net 36
(See FIG. 6).

In the present embodiment, one or a plurality of nozzle branch pipes 81 are provided on the lower surface of the swing shelf 21. Each nozzle branch pipe 81 is provided with a plurality of nozzles 81a having upward orifices. The air blower 21 is provided upright through the bottom plate of the blower 21 so that air can be blown from the blower blower 79 to the nozzle branch pipe 81 via the blower pipe 80 having a flexible part.

The air from the blower blower 79 is blown out from the nozzle 81a in the direction of arrow P, and is substantially perpendicular to the respective net surfaces of the handling net 34, the second processing drum receiving net 35, and the dust discharging drum receiving net 36. It is configured to spray.

With this configuration, grains, second grains, straw chips, etc., which contain high moisture in a so-called wet-saw state and whose surface is wet with moisture, can be handled by the handling net 34, the second processing cylinder. Even in the case where the dust adhering to the receiving net 35 and the dust processing drum receiving net 36 and clogging the handling net 34, the second processing drum receiving net 35, and the dust discharging drum receiving net 36, the jet wind in the direction of arrow P Is sprayed from the outside of the handling net 34, the second processing cylinder receiving net 35, and the dust exhausting cylinder receiving net 36 almost perpendicularly to the net surface, and the clogging is released by the pressure of the blast air, and each clogging is released. In addition to the action to prevent, in the vicinity of the ejection port of the nozzle 81a on the upper surface of the swinging shelf 21, the jet wind directly acts on grains, straw chips, etc., to promote the diffusion of the straw chips, and the Not only does it prevent lumps from adhering to the grains, It acts to facilitate the force sorting. Since the blower 79 for blowing air and the nozzle branch pipe 81 provided on the lower surface of the swinging shelf 21 are connected by the blowing tube 80 having a flexible portion, the swinging of the swinging shelf 21 does not hinder.

In this embodiment, the nozzle branch pipe 81 connected from the blower blower 79 via the blower pipe 80 is
It is also possible to provide the intermediate portion between the upper surface of the swinging shelf 21 and the lower surfaces of the handling net 34, the second processing drum receiving net 35, and the dust discharging drum receiving net 36. The tube 80 may have no flexible portion.

Each of the above-described embodiments of the present invention can be independently implemented to perform the above-described operations, and achieve the effects described below. However, the above-described embodiments can be implemented by combining any two or more embodiments. And the following effects can be obtained to solve the problem more appropriately.

[Brief description of the drawings]

FIG. 1 shows a side view of the combine.

FIG. 2 is a schematic side view showing a harvesting device, a feeding and conveying device, and the like inside the combine shown in FIG. 1;

FIG. 3 shows a top view of the combine of FIG.

FIG. 4 is a plan view of a main part of the threshing apparatus as viewed in the direction of arrows BB in FIG.

FIG. 5 is an elevational cross-sectional view of a main part of the threshing apparatus taken along the line CC in FIG. 4;

FIG. 6 is a side sectional view of a main part of the threshing apparatus taken along the line DD in FIG. 5;

FIG. 7 is a partially detailed view of a cross section of a main part elevational view of the threshing apparatus.

FIG. 8 is an elevational sectional view of a main part of the threshing apparatus according to the first embodiment of the present invention.

FIG. 9 is a partially cutaway perspective view of the vicinity of a handling room of the threshing apparatus according to the first embodiment of the present invention.

FIG. 10 is an elevational sectional view of a main part of a threshing apparatus according to a second embodiment of the present invention.

FIG. 11 is an elevational sectional view of a main part of a threshing apparatus according to a third embodiment of the present invention.

FIG. 12 is a partially cutaway plan view in the vicinity of a handling room of a threshing apparatus according to a third embodiment of the present invention.

FIG. 13 is an elevational sectional view of a main part of a threshing apparatus according to a fourth embodiment of the present invention.

[Explanation of symbols]

(B) Grain rod 1 Combine 2 Body frame 3 Traveling crawler 4 Traveling device 6 Cutting device 7 Supplying and transporting device 8 Weeding tool 9 Raising case 10 Grain storage device 11 Cutting blade 12 Stock transfer device 13 Cutting device support frame 14 Feed chain 15 Threshing device 17 Cutter 18 Vertical auger 19 Discharge auger 20 Operating device 21 Swing shelf 22 Sheave 23 Sorting net 24 First shelf 25 First spiral 26 Handling room 27 Second treatment room 28 Dust treatment room 29 Handling cylinder 29a Saw tooth 30 No. 2 processing cylinder 30a No. 2 processing tooth 31 Dust processing cylinder 31a Dust processing processing tooth 34 Handling net 35 No. 2 processing body receiving net 36 Dust processing body receiving net 39 Karamin 39a Karamin wing 582 Shelf board 59 No. 2 spiral 60 No. 2 deep-frying cylinder 60a No. 2 deep-frying cylinder 69 Drainage chain 70 Drainage spike chain 71 Side Flow fan 71a Impeller of cross flow fan 72, 73 Cutter for straw 74 Blower 75 Duct 76 Pipe-shaped handling room frame 76a Nozzle provided in handling-room frame 77 Pipe-shaped handling room frame supporting handling net 34 77a Handling room Nozzle 78 provided on frame 78 Blower nozzle tube 78a, 78b
Air injection nozzle 79 Blower for blower 80 Blower tube 81 Nozzle branch tube 81a Nozzle standing on nozzle branch tube

Claims (1)

[Claims] 1. A grain stalk handling opening is provided on a side wall of a handling room which is partially or entirely surrounded by a handling net through which grains pass and in which a handling drum is rotatably mounted on an interior shaft. A conveying device is provided along the mouth for nipping and transporting the stem side of the cereal stem, and near the outer peripheral wall of the handling chamber on the opposite side to the conveying device, air blowing guide in a direction opposite to the rotation direction of the handling cylinder. Threshing device provided with a blower port for