JPH0444048Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a grain tank circulation system for a combine harvester that utilizes a grain tank mounted on the combine harvester to pre-dry grains. It is.

[Prior art]

An example of this type of system, which uses a grain tank mounted on a combine harvester to pre-dry grains, has been proposed in Japanese Utility Model Publication No. 170951/1983. This type simply has a blower and an air vent installed on the wall of the paddy tank, and although this type generates an air flow from the blower toward the air port in the paddy tank, only this air flow is produced. However, there was a problem in that the pre-drying of the entire paddy tank was not sufficient, and in the case of wet materials or other materials with excessive moisture, stuffiness or clogging occurred in the lower part of the paddy tank.

[Purpose of the invention] The present invention was devised in view of the above-mentioned conventional situation and to solve the problems. It is an object of the present invention to provide a grain tank circulation device for a combine that can promote pre-drying by circulating the grain using a lifting barrel.

[Structure of the idea]

A grain tank circulation system for a combine harvester according to the present invention that achieves the above object is a combine harvester in which a grain tank is mounted on one side of a threshing machine mounted on the machine body, and the grain tank circulation device for a combine harvester is provided with a grain tank circulation system for a combine harvester in which a grain tank is mounted on one side of a threshing machine mounted on the machine body. The grain tank is characterized in that the first grain is circulated by a grain lifting device, and the inside of the grain tank is suctioned by a suction impeller provided on the upper part of the grain tank.

〔Example〕

Hereinafter, the drawings showing the present invention as an embodiment will be explained.

As shown in FIG. 3, the combine 1 is moved by left and right running devices 4 each having a crawler 3 wrapped around the bottom of the combine body 2. A pre-processing device 6 consisting of a device 5, a cutting blade, etc. is disposed, and a threshing machine 7 is placed on one side of the fuselage 2 behind this pre-processing device 6, and a driving device consisting of a seat 8, a control rod 9, etc. is provided on the other side. An operation unit 10 is provided in each.

A handling barrel shaft 12 whose axis is parallel to the traveling direction of the machine body 2 is rotatably supported in the handling barrel chamber 11 of the threshing machine 7, and the handling barrel shaft 12 has handling teeth 13 around it.
The handling cylinder 14 in which is planted is fixed, and this handling cylinder 14
A handling net 15 is stretched around a predetermined angle.

As shown in FIG. 1, a first helical shaft 15 is rotatably supported below the handling cylinder 13 in an axial direction perpendicular to the axial direction of the handling cylinder shaft 12. A first mouth spiral 16 is fixed to 15, and a handling port 17 that communicates with the handling barrel chamber 11 is provided on one side of the body of the threshing machine 7, and a feed chain 18 and a feed chain 18 are provided on the outside of this handling port 17. , a pinching rail 19 disposed opposite to the conveyance surface of the feed chain 18.
A grain culm conveying device 20 is provided.

Further, below the handling trunk chamber 11, a main swinging transfer sorting plate 21 is provided which can swing freely in a direction parallel to the traveling direction of the aircraft by a swinging mechanism (not shown). The grain threshing from the handling barrel chamber 11 is received on the plate and is oscillatedly transferred to the end while stirring the grain, and the first spiral 16 is provided below the end of the main oscillating transfer sorting plate 21. A first gutter 22 is provided, and the upper part of the first gutter 22 is formed as a main sorting air passage 23 through which the sorting air blows from the front to the rear.

Further, on the other side of the threshing machine 7, a grain tank 24 is arranged, and in this grain tank 24, grains from the center of the tank are arranged in the axial direction along the traveling direction of the machine body 2. Two spiral shafts, a discharge spiral shaft 25 and a grain circulation spiral shaft 27 near the threshing machine 7 side, are each rotatably supported, and the grain discharge spiral shaft 25 has a grain discharge spiral 26. A grain circulation spiral 28 is fixed to the grain circulation spiral shaft 27 .

A first grain lifting device 30 is disposed vertically on the other side of the body of the threshing machine 7, and the first grain lifting device 30 has a first grain lifting spiral 29 fixed thereto. a rotatable first grain lifting spiral shaft 31;
The first grain lifting device 30 is composed of a first grain lifting cylinder 32 surrounding the first grain lifting spiral 29, and this first grain lifting device 30 is connected to the transfer end of the first grain lifting spiral 29. It communicates with the grain tank 24 through a spring blade 33 connected to the grain tank 24, and its lower end is connected to the transfer end of the first helix 16 in the threshing machine 7.

The grain discharge spiral shaft 25 having the grain discharge spiral 26 is provided in a discharge gutter 34 connected to the inclined bottom plate of the grain tank 24, and this discharge gutter 34 is provided with an opening/closing lid 35 above. The opening/closing lid 35 is adapted to be opened and closed by operating an opening/closing lever 58, which will be described later, and the transfer end of the grain discharge spiral 26 is detachably attached to the protruding end of the grain discharge spiral shaft 25, as shown in FIG. The thrower blade 36 is housed in a thrower lifting tube 38 for discharging grains that is removably fitted into an outlet 37 fixed to the side wall of the grain tank 24. A foldable first extension tube 39 is connected to the tip of the thrower grain lifting tube 38 as shown in FIGS. 3 and 4, and this first extension tube 39
A second extension tube 40 having a discharge tube 41 connected to its tip is foldably connected to the second extension tube 40 .

As shown in FIG. 8, a fixed pulley 42 fixed to the grain discharge spiral shaft 25 and a sliding pulley 43 that can only slide are provided at the protruding end of the grain discharge spiral shaft 25 on the opposite side to the thrower blade 36. A split pulley 45 is provided, and this sliding pulley 43 has a spring 44.
A V-belt 48 is wound between this split pulley 45 and a pulley 47 of a transmission case 46 fixed on the fuselage 2. A tensioner 50 that swings up and down about a support shaft 49 of the side wall is provided oppositely, and this tensioner 50 is connected to a bowden wire 5 connected to a tension arm 51 thereof.
2 is connected to a shift lever 57 provided in a control box 56 on the side wall of the tank near the driver's seat, and the width of the split pulley 45 is changed by tightening and loosening the V-belt 48 due to the displacement of the tensioner 50 caused by the operation of the shift lever 57. expands and contracts, and the rotational speed of the grain discharge spiral shaft 25 and thrower blade 36 can be changed steplessly from the operator's seat, and normally, when growing dry rice, the rotation speed is relatively constant. For wheat and grains with a high moisture content, the thrower blades 36 have a small repulsion force, and are operated at high speed to prevent the thrower from clogging. It is now possible to set the optimum rotation according to the conditions.

The transmission case 46 is provided with a pulley 53 whose rotating direction is 90 degrees different from that of the pulley 47. It is designed to be driven and rotated by being driven through a shock clutch 63.

As shown in FIGS. 5A and 5B, an opening/closing lever 58 for opening/closing the opening/closing lid 35 is provided in an operation box 59 on the side wall, and this operation box 59 has a T. Text guide groove 60
An opening/closing lever 5 is provided in the guide groove 60.
8 and another discharge clutch lever 61 are provided.
is operated in the left-right direction, and the discharge clutch lever 61 is operated in the front-rear direction. The opening/closing lid 3
5 is interlocked and connected to a swinging arm 63 that swings left and right about a support shaft 62, and this swinging arm 63 is connected to the opening/closing lever 58 via a connecting rod 64.

As shown in FIG. 7, the ejection clutch lever 61
is provided with a bent portion 62 at its intermediate portion,
This bent portion 62 has a V-belt 6 wound around the engine pulley 55 and pulley 53 as shown in FIG. 5B.
A Bowden wire 64 is connected to a tension clutch 63 opposite to the engine 54, and a Bowden wire 67 is connected to an engager 66 pivotally connected to a throttle arm 65 of the engine 54. Therefore, by operating the ejection clutch lever 61 from the "off" to the "on" position, the two Bowden wires 64 and 67 are pulled, and the tension clutch 63 is moved to the on position. As a result, the pulley 53 is driven to rotate, and at the same time, the grain discharge spiral shaft 25 and the thrower blade 36 are rotated by the pulley 53. At the same time, the throttle arm 65 moves to the dotted line position together with the engager 66, and the engine 54 starts. It is set to rotate at the rated speed.

Only after the discharge clutch lever 61 is operated to the "on" position, the opening/closing lever 58 from the "close" position can be operated to the "open" position. That is, when the ejection clutch lever 61 is in the "off" position as shown in FIG. Further, the regulating plate 69 is such that the discharge clutch lever 61 cannot be moved to the "off" position until after the opening/closing lever 58 has been moved to the "closed" position.

Also, the throttle arm 65 of the engine 54
The throttle lever 7 is connected to the throttle lever 7 via a Bowden wire 71 connected to an interlocking element 70 different from the engaging element 66.
2, and when the throttle lever 72 is operated, the connector 70 moves and the engaging element 66 is bent into a free state, and the throttle arm 65 is The exhaust clutch lever 61 or the throttle lever 72 can be independently controlled from two systems.

In addition, as other examples, FIGS. 10 and 11
As shown in the figure, the threshing machine 7 is provided with a transmission case 73 behind the handling barrel chamber 11, and the rotation speed of the handling barrel shaft 12 is controlled in the threshing machine 7 for rice and wheat to be threshed. Depending on the height (rice...low speed,
Since a speed change lever 74 is provided for changing the speed to high speed), the speed change lever 74 is used to connect the Bowden wire 52 whose one end is connected to the tension arm 51 as shown in FIG. By connecting the other end, the rotational speed of the grain discharge spiral shaft 25 and the thrower blade 36 can be automatically changed to a high or low speed in conjunction with the speed change of the handling barrel shaft 12 by switching the speed change lever.

Further, as shown in other embodiments in FIGS. 13 and 14, the thrower grain cylinder 38 is connected to the outlet 37.
By removing the thrower blade 36 and attaching another spreading device 75 to this outlet 37, this spreading device 75 consists of a spreading spiral shaft 76 and a spreading spiral fixed to the spreading spiral shaft 76. 77, a dispersing tube 78 surrounding the dispersing spiral 77, and a dispersing net 79 provided on the side of the dispersing tube 78, with a drop port 80 opened at the tip,
This spreading spiral shaft 76 is driven and rotated by a motor 81, and the spreading device 75 at the spreading position is supported from the side wall by a foldable link 82.

Therefore, the spraying device 7 laid down in a horizontal state
At the spreading position 5, the powdered or granular fertilizer stored in the grain tank 24 is transferred to the take-out port 37 by the grain discharge spiral 26 when the opening/closing lid 35 is opened, and is then transferred laterally within the spreading device 75. By being sent, it leaks from the spraying net 79 on the lower surface and can be sprayed onto the field as the aircraft advances. This spreading device 75 may be used to spread the snow melting material.
This spreading device has the advantage of expanding the scope of use of the combine.

In the present invention, the grains in the grain tank 24 are circulated by the first grain lifting device 30 attached to the threshing machine 7, and the suction impeller provided on the upper part of the grain tank 24 grain tank 24 by 86
It is designed to suck out the inside.

That is, as shown in FIGS. 1 and 2, the transfer end of the grain circulation spiral 28 provided in the grain tank 24 is connected to the first grain lifting device 30 through the communication port 85 provided at this end. By communicating with the grain tank 24, the grains in the grain tank 24 can be circulated by using the first grain lifting device 30 attached to the threshing machine 7 as is, without installing a special grain lifting device exclusively for circulating grains. I am now able to do this.

A suction impeller 87 is provided above a suction hole 86 opened in the top plate of the grain tank 24, and a discharge port 89 of a impeller chamber 88 that accommodates the suction impeller 87 is opened toward the rear. This suction impeller 87
is supported on a vertical shaft 90, and includes a pulley 91 fixed to the vertical shaft 90 and a pulley 92 fixed to the end of the extended shaft of the first grain lifting helical shaft 31 of the first grain lifting device 30.
A V-belt 93 is wound between the suction impeller 87 and
The air intake port 94 opened in the lower side wall of the grain tank 24 is covered with a net 95, so that the air intake inside the grain tank 24 is driven from the side closest to the grain lifting device 30. The inlet 94 is connected to the suction impeller 87 so as to be sucked therein.

Therefore, the grain itself in the grain tank 24,
The grains are circulated by the first grain lifting device 30 attached to the threshing machine 7, and the grains are passed through the air flow by the suction impeller 87 installed at the top, thereby preventing condensation in the grain tank 24 and removing the harvested grains. It is possible to discharge waste while promoting pre-drying of the material, allowing smooth work to be done without clogging even with materials with excessive moisture such as wet materials.
Although it is possible to solve the problem that the conventional airflow alone is insufficient, in addition, the grains in the grain tank 24 can be circulated without a dedicated grain frying device. First grain lifting device 3 attached to thresher 7 without special provision
0 can also be used and circulated.

[Effect of idea]

In short, the present invention provides a grain tank circulation system for a combine harvester in which a grain tank is mounted on one side of the threshing machine mounted on the machine body.
The grains in the grain tank are circulated by a first grain lifting device attached to the threshing machine, and the inside of the grain tank is sucked by a suction impeller provided at the upper part of the grain tank. Therefore, the grain itself in the grain tank is circulated by the first grain lifting device attached to the threshing machine, and pre-drying is carried out by passing it through the air flow produced by the suction impeller installed at the top. Although it is possible to discharge waste while accelerating the removal of waste, it is possible to circulate the grain in the grain tank by simply installing a separate grain lifting device attached to the threshing machine. It can also be used as a grain frying device for circulation.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Figure 1 is a front sectional view of the combine, Figure 2 is a plan view of the main parts, Figure 3 is a perspective view of the combine, Figure 4 is a power transmission system diagram, Figure 5A is an operation system diagram,
Figure B is an operation system diagram, Figure 6 is a plan view of the guide groove, Figure 7 is a side view of the discharge clutch lever, Figure 8 is a plan view of the transmission, Figure 9 is a side view of the transmission, and Figure 10 is a side view of the transmission. The figure is a side view of the threshing machine partially cut away, FIG. 11 is a partially cutaway side view showing an enlarged main part of FIG. 10, and FIG. 12 is a side sectional view of the thrower grain lifting cylinder. 13 is a side sectional view of the spraying device, FIG. 14 is an explanatory diagram of the operation of the spraying device, and FIG. 15 is a sectional view taken along the line A-A in FIG. 14. 1... Combine harvester, 7... Threshing machine, 24... Grain tank, 30... First grain lifting device, 87...
Suction vane car.

Claims (1)

[Scope of utility model registration request] In a combine harvester in which a grain tank is mounted on one side of a threshing machine mounted on the machine, the grain in the grain tank is circulated by a first grain lifting device attached to the threshing machine, and the grain is A grain tank circulation system for a combine harvester, characterized in that the inside of the grain tank is suctioned by a suction impeller provided at the upper part of the grain tank.