JPH0767465A - Threshing apparatus - Google Patents

Abstract

PURPOSE:To improve the tailing screening capacity and prevent the grain loss by controlling the blowing direction of a second winnower. CONSTITUTION:A longitudinally oscillating screening shelf 5 having longitudinally arranged grain sieve 3, straw rack 4, etc., is placed under a concave screen 2 extended over the lower outer circumference of a threshing drum 1. A 1st winnower 6, a 1st grade screw 7, a 2nd winnower 8 and a tailing screw 9 are arranged under the screening shelf from the front side to the rear side in the order. In a threshing apparatus having the above construction, the blast port 10 of the 2nd winnower 8 is positioned above and in front of the tailing screw 9 and an air-direction controlling apparatus 11 is placed on or near the blast port 10 to enable the change of the direction of air flow blowing from the blast port 10 between the direction toward the front part of a straw rack 4 at the back of the screening shelf 5 positioned above the blast port 10 and the direction toward the tailing screw 9 positioned below and behind the blast port 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device provided in a combine or the like.

[0002]

2. Description of the Related Art Conventionally, a threshing device has a receiving net stretched over the outer periphery of the lower part of the handling cylinder, and a grencive,
A front-back oscillating type sorting shelf in which chaff sheaves, straw racks, etc. are arranged in the front and back is provided, and the first Kara, the first spiral, the second Kara, and the second spiral are sequentially installed from the front position below the selection shelf. It is arranged and configured.

Further, the second Karako is constructed as a cross-flow fan type, and a blower port for ejecting a second selection wind is arranged at a higher position in front of the second spiral. In the threshing work, the grain culm put into the threshing device is acted as a handling cylinder, and among the grains to be shredded and straw to be treated, those that pass through the mesh of the net are It leaks to the front of the sorting rack. The object to be processed that has leaked onto the sorting rack is transported rearward by the swinging movement of the sorting rack in the front-rear direction. During this transfer, the processed material containing a lot of grains leaked from the grain sieve was subjected to the sorting by the lower sorting net and the wind sorting by the first Karako, and only the grains flowing down further had the largest spiral. Is taken into. The grains taken into the first spiral are carried out to the outside of the threshing device and harvested.
Further, the object to be treated having a small grain content which has passed over the grain sieve is passed to the rear straw rack via the rear chaff sieve. Then, while being transferred on the chaff sheave and the straw rack, it is subjected to wind sorting by the second sorting wind ejected from the blowing port of the second Karako, and the leaked object flows down to the second position. Taken into the spiral. The object to be treated taken into the second spiral still contains a large amount of branch-bead-attached particles and straw chips. Therefore, the object to be processed is returned from the second spiral to the front of the handling cylinder or the front of the sorting rack via the fried spiral to be reprocessed. Straws that do not leak from the straw rack are further transported to the rear and discharged to the outside.

[0004]

In the conventional threshing device, especially when threshing wet culms, early rice, etc., a large amount of straw waste is generated by the threshing action of the handling barrel, and as a result, the second spiral An object to be processed that contains a lot of straw dust flows down. When the object to be processed is returned to the handling cylinder or the front part of the sorting rack, if the amount of return is large, the processing capacity will be reduced.
Therefore, it is necessary to apply the second sorting wind to the object to be treated transferred onto the chaff sieve and the straw rack so that only the grains flow down and the straw waste is discharged to the outside of the machine. For this purpose, the above-mentioned second Kara Tan is indispensable.

However, under favorable conditions such as threshing dried culms, etc., the generation of straw waste due to the shedding action of the handling cylinder is relatively small, and the straw waste is transferred onto the chaff sieve and the straw rack. The number of objects to be processed coming in is very small as compared with the case described above. For such a few objects to be processed,
When the second selection wind is applied by the second Karako as in the case described above, not only the straw waste contained in the object to be processed but also the grains are scattered and discharged outside the machine.

[0006] As described above, the conventional action of the No. 2 sorting wind by the second Karako is not suitable for all working conditions, and therefore, there is a problem that it leads to loss of grain harvest. is there.

[0007]

In order to solve the above problems, the present invention takes the following technical means. That is, below the receiving net 2 stretched over the outer periphery of the lower part of the handling cylinder 1, there is provided a front-back swing type sorting shelf 5 in which the Glensive 3, the straw rack 4 and the like are arranged in the front and rear, and below the sorting shelf 5. In the threshing device configured by sequentially arranging the first Karako 6, the first spiral 7, the second Karo 8, and the No. 2 spiral from the front position in, the blower port 10 of the second Karuno 8 is connected to the No. 2 spiral 9. The blower port 10 is arranged at a higher position in the front.
Alternatively, at a position in the vicinity thereof, the air blowing direction from the air blowing port 10 is from the direction toward the front of the straw rack 4 at the rear of the sorting shelf 5 located above the air blowing port 10.
A wind direction adjusting device 11 capable of changing and adjusting up to a direction toward the second spiral 9 located at a lower position rearward from 0.
The threshing device is characterized by being provided with.

[0008]

The function of the present invention is to supply grain culms that have been mowed by the combine operation or the like into the threshing device, and perform the threshing treatment by rotating the handling cylinder 1. As a result, an object to be processed in which grains and straw waste are mixed is generated, and the object to be processed leaks from the mesh of the receiving net 2 to the lower sorting shelf 5. The object to be processed that has leaked onto the sorting rack 5 is transported rearward by the swinging movement of the sorting rack 5 in the front-rear direction. In the middle of this process, the material containing a large amount of grains leaks from the grain sieve 3 in the middle of the sorting shelf 5. The object to be processed is subjected to the sorting by the lower sorting net and the wind sorting by the first sorting wind that flows backward by the first Karako 6. Only the grains that clear this selection and flow down further are taken into the first spiral 7. The grains taken into the first spiral 7 are carried out of the threshing device and harvested. Further, the processed material having a small grain content that has passed over the grain sieve 3 is taken over from the rear chaff sieve to the straw rack 4. Then, while being transferred on the chaff sheave and the straw rack 4, the object to be treated that has been leaked is subjected to wind sorting by the sorting wind of the second Karako 8 and flows downward, and is taken into the second spiral 9. . The object to be treated taken in by the second spiral 9 is returned from the second spiral 9 to the front part of the handling cylinder 1 or the sorting shelf 5 through the fried spiral to be reprocessed. Straws that do not leak from the straw rack 4 are further transferred to the rear and discharged to the outside.

According to the structure of the present invention, the blower port 10 of the second Kara8 is arranged at a higher position in front of the second spiral 9 and the blower port 10 is provided at or near the blower port 10.
From the direction toward the front of the straw rack 4 at the rear of the sorting shelf 5 located above the air blowing port 10 to the direction toward the second spiral 9 located at the lower rear of the air blowing port 10. The wind direction adjusting device 11 is provided so that it can be changed and adjusted between.

In the threshing selection step described above, if there are many objects to be transferred on the selection shelf 5, the wind direction adjusting device 11 is actuated, and the second blown out from the blower port 10 of the second Karako 8 The blowing direction of the sorting air is changed and adjusted to the direction from the front portion of the straw rack 4 toward the rear portion of the straw rack 4. As a result, the second sorting wind flows from the lower front side to the upper rear side of the straw rack 4, wind-sorts the straw waste and the grain, and the straw waste is smoothly discharged to the outside of the machine and the grain is discharged. Only the second spiral 9 can flow down. That is, it is possible to favorably separate and sort the grain and the straw waste even when a large number of objects to be treated are generated. In this case, the blowing direction of the second selection air is not limited to the front portion of the straw rack 4 to the rear portion of the straw rack 4, and is a range including the chaff sheave rear portion in front of the straw rack 4. Good. However, the blowing direction of the second selection wind in this case is naturally restricted to a direction that does not hinder the rearward transfer of the object to be processed on the selection shelf 5.

On the other hand, in the threshing / sorting step, when the number of objects to be processed transferred on the sorting shelf 5 is small, the air-direction adjusting device 11 is operated to eject the second air blown from the blower port 10 of the second sardine lees 8. Direct the blowing direction of the sorting wind higher than the above case. In this case, the air blowing direction may be substantially directly above the air blowing port 10 or may be directed forward and upward from the air blowing port 10. As a result, the second sorting wind flows from the lower side to the upper side with respect to the sorting shelf 5, hinders the rearward transfer of the object to be processed on the sorting shelf 5, and the grains are scattered backward and discharged outside the machine. Can be prevented. In this case, it is more effective to reduce the wind force of the second selection wind by means such as reducing the drive speed of the second Karako 8.

Further, at the time of non-threshing work, the wind direction adjusting device 11 is operated to direct the blowing direction of the second sorting wind blown from the blowing port 10 of the second Karako 8 to the second spiral 9.
At this time, if the bottom part of the spiral gutter surrounding the lower outer periphery of the second spiral 9 is openable, the opening causes the second selection wind to block or leave the second spiral 9 part. It is possible to easily discharge the used grains and straw waste to the outside.

According to the above, it is suitable for various threshing conditions,
It is possible to obtain the best sorting ability without loss of yield.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail by exemplifying a combine threshing device. The combine fuselage has a machine base 1 above the left and right traveling devices 12, 12 of the endless track type.
3, a threshing device 14 and a grain storage device 15 are provided side by side on the machine base 13, and a control unit 16, a prime mover 17 and the like are further provided. In front of the threshing device 14, a mowing device 18 is provided so as to be vertically movable.

The threshing device 14 comprises an upper handling chamber 19 and a lower sorting chamber 20. In the inside of the handling chamber 19, the handling barrel 1 is rotatably mounted on the front by a handling barrel shaft 21 in the front-rear direction, and the receiving net 2 is provided along the outer periphery of the lower portion of the handling barrel 1.
Extend. Further, a suction dust collecting fan 24 having a straw chain 22 and a casing 23 is provided in the rear portion of the handling chamber 19. Reference numeral 25 is a feed chain provided on the side of the handling chamber 19.

Inside the sorting chamber 20, a sorting rack 5 is provided in the upper portion so as to be swingable in the front-rear direction, and in the lower portion from the front,
Arrange the first Karasu 6, the first spiral 7, the second Kara 8, the second spiral 9. The sorting shelf 5 is a rack-shaped transfer unit 2 from the front.
6, Glen sieve 3, chaff sieve 27, sieving line 28,
A strok rack 4 is arranged, and a sorting net 29 is arranged below the Glen sieve 3. The sorting shelf 5 is driven and swung in the front-rear and up-down directions by a swing crank mechanism. Further, the transfer section 26 has a rack shape, the Glen sieve 3 and the chaff sheave 27 have a left and right cross-shape formed by a large number of left and right direction plate bodies, and the sieving line 28 has a comb shape formed by a large number of front and rear direction rods. The straw rack 4 is formed into a front and rear crosspiece shape by a number of front and rear rack plates. Incidentally, 30 is a grain guide plate which is provided at the rear end portion of the sorting shelf 5 in a front downward inclination posture.

The first Karako 6 has an impeller 31 which has an axis in the left-right direction and can be driven and rotated, and a casing 32 thereof.
It consists of. The first Karato 6 is arranged in the forefront below the sorting shelf 5 and blows out the first sorting wind toward the rear and the upper rear. The first spiral 7 is a drive spiral that conveys the grain to one side in the left-right direction. The first spiral 7 is arranged at the rear of the first Karako 6, and the receiving gutter 33 of the first spiral 7 is configured to be continuous with the lower end of the first grain table 34 in a rearwardly inclined posture. Further, the lower end portion of the first deep-fried food tube 36 containing the first deep-fried food helix 35 is connected to the transport end portion of the first-highest spiral 7. The upper end portion of the first deep-fried grain cylinder 36 is connected to and communicates with the upper portion of the grain storage device 15. The first deep-fried food helix 35 is interlockingly driven from the first helix 7.

The second spiral 9 is a driving spiral that conveys grains to the left and right. The second spiral 9 is arranged at the rear of the second Karako 8 and the gutter 37 of the second spiral 9 is configured to be continuous with the lower end portion of the second-flow grain board 38 in the rearwardly inclined posture. Further, a lower end portion of a second deep-fried food tube 40 containing a second deep-fried food helix 39 is connected to a conveying end portion of the second spiral 9. An upper end portion of the second fried food cylinder 40 is connected to and communicates with the handling chamber 19. The second deep-fried food spiral 39 is interlockingly driven from the second spiral 9.

The first-flow grain board 34 is disposed between the first spiral 7 and the second Karako 8 and the upper end portion of the rearwardly inclined posture reaches the rear of the sorting net 29. Then,
The second Karako 8 comprises a cross flow fan 41, and a front casing 42 and a rear casing 43 provided along the outer circumference of the cross flow fan 41. And the front case
The blower port 10 opening rearward is formed between the upper end of the sing 42 and the upper end of the rear casing 43. The blower port 10 is located above the second spiral 9. Also,
An upper end of the front casing 42, which is the upper edge of the blower opening 10, has one end of a first airflow direction guide plate 44, which is a flat plate in the left-right direction, pivotally attached in a vertically rotatable manner. On the other hand, one end of a second airflow direction guide plate 45, which is a flat plate in the left-right direction, is pivotally attached to the upper end of the rear casing 43, which is the lower edge of the blower port 10, so as to be vertically rotatable. The free end of the first wind direction guide plate 44 and the free end of the second wind direction guide plate 45 are connected to each other by the interlocking rod 46.
Connect by shaft attachment. As a result, the first airflow direction guide plate 44 and the second airflow direction guide plate 45 can change their postures in the same direction. The above configuration is the wind direction adjusting device 11. The space formed between the lower end of the front casing 42 and the lower end of the rear casing 43 is the intake port 47 of the second Kara8.

An operating arm 48 is integrally provided on the lower surface of the rear side of the second airflow direction guide plate 45 in a downwardly inclined posture, and an airflow adjusting lever 49 is integrally attached to the operating arm 48. The wind direction adjusting lever 49 projects outside the threshing device 14 and can be operated from the outside. With this configuration,
When the wind direction adjusting lever 49 is rotated forward or backward, the first wind direction guide plate 44 and the second wind direction guide plate 45 rotate downward or upward. As a result, the wind direction of the second selection wind ejected from the blower port 10 of the second Karako 8 is located above the blower port 10 from the direction toward the second spiral 9 located at a lower position behind the blower port 10. The sorting shelf 5
It is changed and adjusted up to the front of the rear strok rack 4. By this adjusting operation, the wind direction of the second selection wind suitable for the threshing condition can be set.

A bottom plate 50 slidable in the front-rear direction is provided at the bottom of the gutter 37 of the second spiral 9, and the bottom part of the gutter 37 can be opened by sliding the bottom plate 50 forward. To configure. The free end side of the operation arm 48 is pivotally connected to the front end of the bottom plate 50, and the bottom plate 50 slides forward in conjunction with the forward rotation of the operation arm 48. Configure to work. With this configuration, when the wind direction adjusting lever 49 is rotated forward, the wind direction adjusting device 11 is operated to blow the second selection wind blown from the second Karako 8 onto the second spiral 9 from above. At the same time, the bottom plate 50 of the trough 37 of the second spiral 9 is slid forward to open the bottom of the trough 37. By this, the second spiral 9
Also, the object to be treated that has been clogged or left in the trough 37 can be discharged downward to the outside. As a result, maintenance becomes easy.

The configuration of the wind direction adjusting device 11 may be modified as follows. That is, the first wind direction guide plate 44
Is fixed in a rearwardly inclined posture, and only the second airflow direction guide plate 45 is pivotally attached to the upper end of the rear casing 43 so as to be vertically rotatable. Then, a torque spring 51 is provided on the shaft attachment portion of the second wind direction guide plate 45, and by the torque spring 51,
The second wind direction guide plate 45 is constantly urged to rotate upward. In addition, the operation wire 5 is provided on the right and left sides of the second wind direction guide plate 45.
2. Connect one end of 2. The second wind direction guide plate 45 is rotated downward by pulling the operation wire 52 against the torque spring 51. When the second airflow direction guide plate 45 rotates upward, not only the airflow direction of the second selection airflow is changed upward, but also the effective opening area of the airflow outlet 10 is reduced and the airflow amount is reduced. is there. When the second airflow direction guide plate 45 rotates downward, the airflow direction of the second sorted air is not only changed to the rear, but also the airflow port 10 is opened.
That is, the effective opening area is increased to increase the air flow rate. The operating wire 52 is pulled by driving an electric motor 53.

A flow rate detecting sensor 54 of a floating actuator type for detecting the layer thickness of the object to be processed transferred on the transfer section 26 is provided on the rear section of the transfer section 26 on the front side of the sorting shelf 5. Set up. And for the controller 55,
An automatic air flow rate control on / off switch 56 and the flow rate detection sensor 54 are connected to its input side, while a relay 57 for driving the electric motor 53 in a forward and reverse direction is connected to its output side. With this configuration, when the threshing operation is performed with the automatic air volume control on / off switch 56 turned on, the flow rate detection sensor 54 detects the layer thickness of the processing object transferred on the transfer section 26. And based on this detection result,
The controller 55 performs a comparison operation with the reference value stored and set, and then outputs to the relay 57. As a result, the electric motor 53 is driven and the operating wire 52 is pulled or loosened.

That is, the flow rate detecting sensor 54 is connected to the transfer section 2.
When an increase in the layer thickness of the object to be processed on 6 is detected, an output is made from the controller 55 to the relay 57 and the electric motor is operated.
The actuator 53 is driven in the normal direction to pull the operation wire 52.
As a result, the second wind direction guide plate 45 rotates downward,
The blowing direction of the second selection wind is changed to the rear, and the actual opening area of the blower port 10 is enlarged to increase the blowing amount. As a result, even if there are many objects to be treated, smooth sorting can be performed by the second sorting wind, and there will be no loss such that the grain is mixed with the straw waste and discharged to the outside.

Further, the flow rate detecting sensor 54 is provided in the transfer section 2.
When a decrease in the layer thickness of the object to be processed on 6 is detected, an output is made from the controller 55 to the relay 57, and the electric motor is operated.
The operation wire 52 is reversely driven to loosen the operation wire 52 for operation.
As a result, the second wind direction guide plate 45 rotates upward,
The blowing direction of the second selection wind is changed upward, and the actual opening area of the blowing port 10 is reduced to reduce the blowing amount. As a result, at least the object to be treated becomes a shut-off wind that prevents the second sorting wind from scattering to the outside of the object to be treated, and it is possible to prevent even the grain from scattering and becoming a loss. .

[Brief description of drawings]

FIG. 1 is a side view for explaining an embodiment of the present invention.

FIG. 2 is a side view for explaining a main part in one embodiment of the present invention.

FIG. 3 is a plan view for explaining an embodiment of the present invention.

FIG. 4 is a rear view for explanation in one embodiment of the present invention.

FIG. 5 is an explanatory side view of another embodiment of the present invention.

FIG. 6 is a side view for explaining a main part of another embodiment of the present invention.

FIG. 7 is a block circuit diagram in another embodiment of the present invention.

FIG. 8 is a side view of the combine in the embodiment of the present invention.

FIG. 9 is a plan view of the combine in the embodiment of the present invention.

[Explanation of symbols]

 1 Handling Cylinder 2 Receiving Net 3 Glensive 4 Straw Rack 5 Sorting Shelf 6 1st Kara Mino 7 1st Spiral 8 2nd Kara Mino 9 2nd Spiral 10 Air Vent 11 Air Direction Control Device

Claims (1)

[Claims] 1. A front-back swing type sorting shelf 5 in which a Glensive 3, a straw rack 4 and the like are arranged in front and back is provided below a receiving net 2 stretched over the outer periphery of the lower part of the handling cylinder 1, and the sorting is performed. In the threshing device configured by sequentially arranging the first Karaku 6, the first spiral 7, the second Karaku 8, and the No. 2 spiral 9 from the front side position below the shelf 5, in the threshing device of the second Karaku 8 The blower port 10 is arranged at a higher position in front of the spiral 9
Alternatively, at a position in the vicinity thereof, the air blowing direction from the air blowing port 10 is from the direction toward the front of the straw rack 4 at the rear of the sorting shelf 5 located above the air blowing port 10.
A wind direction adjusting device 11 capable of changing and adjusting up to a direction toward the second spiral 9 located at a lower position rearward from 0.
A threshing device characterized by being provided with.