JPH0410741Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a threshing machine installed in a combine harvester, a harvester, etc. This relates to a third grain collecting device in a thresher that collects grains that are about to be discharged.

[Prior art]

In the case of this kind of threshing machine installed in combine harvesters, harvesters, etc., third materials such as straw waste are discharged from the suction impeller chamber located at the end of the main sorting air path of the threshing machine. The amount of grain that gets mixed into the third straw waste and is discharged outside the machine, that is, the amount of grain that is scattered by the third grain, depends on the moisture content of the grain culm being threshed. This is especially true in grain culms with low moisture content, and when harvesting and threshing standing grain culms wet with morning dew or rain, or grains with high moisture content such as lodging grain culms that have fallen in the field. It tends to increase in culm conditions.

This is caused by wet grain culms or wet grain culms adhering to the handling net in the handling barrel room, causing clogging, which prevents grain from leaking through the clogged handling net. This is believed to be the cause, and there is a current demand for a reduction in the amount of scattered grains.

[Purpose of invention]

This invention was devised in view of the above-mentioned conventional situation and to eliminate the drawbacks, and is a threshing machine that can collect grains mixed with straw waste and about to be discharged from the third opening. The purpose of the present invention is to provide a third grain collecting device in the present invention.

[Structure of the idea]

The third grain collecting device in a threshing machine according to the present invention which achieves the above object has a third grain collecting device connected to the third discharge tube of the threshing machine, and a spiral blade extending along the discharge direction of the third discharge tube. A rotatable spiral shaft,
It consists of a cylindrical sorting net that surrounds the outer periphery of the spiral blade, and a discharge blade that is fixed to the helical shaft and continues to the transfer end of the spiral blade. and a waste discharge port are provided in the cylindrical portion surrounding the outer periphery of the discharge vane.

〔Example〕

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

As shown in FIG. 1, the threshing machine 1 is provided with a handling barrel chamber 5 that houses a handling barrel 3 around which a large number of handling teeth 2 are implanted. A handling net 4 is stretched over a predetermined range around the barrel 3 to allow the handling barrel 3 to leak the threshed grain through its mesh.

A pressure-type main winch wheel 8 that rotates around the axis of a main winch shaft 7 disposed in a direction perpendicular to the axial direction of the handling fuselage shaft 6 is disposed in the fuselage below the handling fuselage chamber 5. The air outlet of the main winnowing wheel 8 is connected to the main sorting air outlet 11 and the sub-sorting air outlet 1 by the flow plate 13 facing rearward.
2, and a suction impeller 10 provided on one side of the fuselage at the upper rear of the fuselage is disposed rotatably around its suction vane axle 9. Between the main wing wheel 8,
It blows through from above the first spiral 14 from the main sorting air port 11, and further passes through a sorting net 27 behind the main swinging transfer sorting plate 15, which will be described later, to the suction impeller 10.
A main sorting air passage 16 is formed extending from the sub-selecting air port 12 to the upper part of the second reduction spiral 17, and a sub-oscillating air passage is disposed downwardly of the suction impeller 10 in an upwardly inclined manner as seen from the side. The suction impeller 1 blows through between the chaff sheaves 20 provided behind the transfer sorting plate 21.
A sub-selecting air passage 18 is formed that reaches zero.

In addition, on one side of the machine, there is a first grain lifting cylinder (not shown) for taking out the sorted grains outside the machine, and a second main swinging transfer sorting plate 15 below the net 4 that handles the reduced product. A second reducing thrower 22 for returning the grains to the top is disposed in each case, and the first grain lifting tube is connected to the transfer end of the first spiral 14, and the second reducing throat 22 is connected to the transfer end of the first spiral 14. It is connected to the transfer end of the second reduction spiral 17, and the end of the second reduction thrower cylinder 23 extends forward and upward, passes through the side of the handling barrel chamber 5, and faces onto the main swinging transfer sorting plate 15.

On the other side of the machine, a handling port (not shown) communicating with the handling barrel chamber 5 is opened along the axial direction of the handling barrel shaft 6, and a feed chain 24 is wound around the outside of this handling port. A pinching rail 25 is disposed opposite to the conveying surface of the feed chain 24, and the harvested grain culm fed to the starting end side is sandwiched between the feed chain 24 and the pinching rail 25 at its base. While the grain is being transferred through the handling port toward the terminal end, the tip side is threshed in the handling barrel chamber 5,
The discharge culm after threshing is transferred to a culm discharge chain (not shown) disposed at the terminal end of the feed chain 24, and is discharged from the machine from the rear end of the machine.

A main swinging transfer sorting plate 15 is disposed below the handling net 4, and receives the threshed grains from the handling barrel chamber 5 while stirring and transferring the grains toward the rear along the axial direction of the handling barrel shaft 6. This main swinging transfer sorting plate 15 is configured to swing back and forth and up and down along the axial direction of the handling cylinder shaft 6 by a swinging mechanism (not shown), and is continuous with the upwardly inclined transfer projection 26. It is formed from a sorting net 27 on the end side, and further below this sorting net 27 is an upwardly inclined grain flow board 2.
A handling net 4 is provided in the handling trunk room 5.
A handling barrel chamber discharge port 29 is opened.

Behind the grain flow plate 28 of the main oscillating transfer sorting plate 15 is a main oscillating transfer sorting plate 15 extending rearward with an upward slope.
A sub-oscillating transfer and sorting plate 21 is provided which swings integrally with the transfer protrusion 19.
and a chaff sheave 20 continuous to the rear of the transfer projection 19.

Further, the above-mentioned suction impeller 10 is housed in a suction impeller chamber 31 fixed to one side of the fuselage, and a third discharge pipe 30 whose base end is connected to the outer wall of the suction impeller chamber 31 is installed diagonally downward. It has been extended to

In the present invention, the third grain collecting device 4
0 is detachably connected to the No. 3 discharge tube 30, and this No. 3 grain collecting device 40 includes a spiral blade 32 provided along the discharge direction of the No. 3 discharge tube 30.
It is composed of a rotatable helical shaft 33 having a rotatable helical shaft 33, a cylindrical sorting net 34 surrounding the outer periphery of the helical vane 32, and a discharge vane 35 fixed to the helical shaft 33 and continuous with the transfer end of the helical vane 32. A grain collection port 37 is provided in the sorting cylindrical portion 36 that surrounds the outer periphery of the sorting net 34, and a waste discharge port 39 is provided in the discharge cylindrical portion 38 that surrounds the outer periphery of the discharge vane 35.
The helical shaft 33 is rotatably supported by a bearing 41 fixed to the discharge cylindrical portion 38, and a joint provided at the end of the helical shaft 33 is connected to a joint of the motor 42. motor 42
The motor 42 is fixed to a bearing 41 and connected to a power source 44 via a switch 43.

This helical shaft 33 may not be driven by the motor 42, but may be driven from a rotating shaft provided in the body.

Further, between the sorting cylindrical part 36 and the third discharge tube 30, there is a connecting tube 45 that fits into the outside of the third discharge tube 30.
A connecting ring 46 fixed to the end face of the connecting tube 45 and a connecting ring 47 fixed to the third discharge tube 30 are removably connected by bolts and nuts. A grain storage box 48 for storing grains is exposed below as shown in FIG. 1, or a grain storage bag 49 is directly locked in the grain collection port 37 as shown in FIG. This makes it possible to take out the grains collected by the third grain collection device 40.

Therefore, when harvesting and threshing standing grain culms wet with morning dew or rain-wetted standing grain culms with high moisture content, or grain culms with high moisture content such as grain culms that have fallen in the field, it is difficult to remove grains with high moisture content. In the case of threshing conditions that increase the number of grains, by connecting the third grain collecting device 40 to the end of the third discharge tube 30 of the threshing machine 1, the grains are blown out along with the wind via the suction impeller chamber 31. The centrifugal force of the rotating spiral blades 32 allows the third grain to be transported backwards while being diffused toward the surrounding sorting net 34, and by this diffusion transfer, the grains pass through the mesh of the sorting net 34. The straw waste that does not pass through the mesh can be transferred to the rear and discharged outside the machine through the waste discharge port 39 from the discharging blade 35 at the end. It is possible to collect the third scattered grains that increase when threshing grain culms.

In addition, since this No. 3 grain collecting device 40 can be configured in a cylindrical form mainly consisting of a spiral blade 32 that diffuses and transfers the No. 3 grains, it can be easily attached and detached from the cylindrical No. 3 discharge pipe 30. It has the advantage that it can be easily removed when it is not needed, such as when threshing grain culms that normally have a low moisture content and few scattered grains.

[Effect of idea]

In short, the third grain collecting device in the threshing machine according to the present invention is capable of freely rotating the third grain collecting device connected to the third discharge tube of the threshing machine by having a spiral blade along the discharge direction of the third discharge tube. a cylindrical sorting net that surrounds the outer periphery of the helical blade; and a discharge blade that is fixed to the helical shaft and connected to the transfer end of the spiral blade; Since a grain collection port is provided in the third part of the threshing machine and a waste discharge port is provided in the cylindrical part surrounding the outer periphery of the discharge blade, the third part is The grains are blown out of the discharge tube along with the wind, and the rotating spiral blades transport them backwards while spreading them toward the surrounding sorting net, and the grains pass through the sorting net and enter the grain collection port. Collected straw waste that does not pass through the mesh can be transferred to the rear and discharged outside the machine through the waste discharge port from the discharging blade at the end, which increases when threshing grain culms with high moisture content. No. 3 scattered grains can be collected.

Moreover, the No. 3 grain collecting device can be configured in a cylindrical form, mainly consisting of spiral blades that diffuse and transport the No. 3 grains, and has a structure that allows it to be easily attached and detached from the cylindrical No. 3 discharge pipe. It has characteristics.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side sectional view showing the entire threshing machine, Figure 2 is a plan sectional view showing the main parts enlarged, Figure 3 is a front view of Figure 2, and Figure 4 is a grain collection bag attached. FIG. 3 is an enlarged side view of main parts showing an example. 1...Thresher, 30...Third discharge pipe, 32...
Spiral blade, 33... Spiral shaft, 34... Sorting net, 3
5... Discharge vane, 36... Sorting cylinder part, 37...
Grain collection port, 38...discharge cylindrical portion, 39...waste discharge port.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A third grain collecting device connected to a third discharge tube of a threshing machine is provided with a rotatable helical shaft having a spiral blade along the discharge direction of the third discharge tube, and the spiral blade. It is composed of a cylindrical sorting net surrounding the outer periphery of the sorting net, and a discharge vane fixed to the helical shaft and continuous to the transfer end of the spiral vane. A third grain collecting device in a thresher, characterized in that a cylindrical portion surrounding the outer periphery of a discharge vane is provided with a waste discharge port. 2 Utility model registration claim No. 1 in which the No. 3 grain collecting device is removably attached to the No. 3 discharge tube of the threshing machine.
No. 3 grain collecting device in the threshing machine described in Section 3.