JP2009165420A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing apparatus to carry out proper automatic opening and closing of a dust removal control unit by a small scale operation mechanism, and easily and quickly carrying out maintenance operations by avoiding generation of action disorders of the operation mechanism. <P>SOLUTION: A mechanical interlocking mechanism 70 is installed to the side of a threshing feed chain 11, wherein the mechanism 70 transmits a displacement toward a nipping space for the endless turning chain 21 of a transport guide rod 22 as the displacement necessary for switching opening/closing attitudes of the dust removal control unit 60. When the space between the transport guide rod 22 and the endless turning chain 21 is increased, the dust removal control unit 60 is opened to switch to the open attitude side, and when the relative space between the transport guide rod 22 and the endless turning chain 21 is decreased, the dust removal control unit is closed to switch to the closed attitude side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a waste wall transporting device that sandwiches and transports the threshing waste straw from the handling chamber in the rearward direction of the machine body by an endless rotating chain and a conveyance guide rod, and wind power that discharges dust from the sorting unit to the outside of the machine body by the sorting wind. The present invention relates to a threshing apparatus including a dust removal control body that opens and closes a dust removal path.

Conventionally, there has been a threshing apparatus disclosed in Patent Document 1, for example.
The threshing device disclosed in Patent Document 1 includes a wind selection unit with a sorting device, a dust outlet through which straw scraps to be discharged from a chaff sheave included in the sorting device are discharged together with the sorting wind, and the dust removal A dust removal control plate provided to open and close this portion at the mouth is provided.

  The dust control plate is linked to an operation detection mechanism (detection switch) through a mechanical interlocking mechanism, a motor, and a control unit. The motion detection mechanism detects that the cutting unit has been raised to a predetermined non-working position. When the mowing part raising operation by the power steering lever is performed and the motion detection mechanism is in the detection state, the dust control plate automatically swings in the direction to close the dust outlet based on the detection result of the motion detection mechanism. When the mowing unit is lowered to a predetermined mowing position, the dust control plate automatically swings in the direction to open the dust outlet.

JP-A-4-84825

  In the threshing apparatus provided with the dust removal control body described above, when the amount of processed material in the sorting unit is large, the amount of processed material for discharge generated in the sorting unit increases. The dust removal control body is opened and switched to the posture so that dust is not easily mixed in the second processed material or the second processed material. When the amount of processed material in the sorting section is small, the processed material is easily blown away by the sorting wind, so that the dust control body is switched to the closed position so that the loss of grains discharged together with the sorting wind can be suppressed or avoided. .

  When the above-described conventional technique is employed, the opening / closing switching of the dust control body can be automatically performed. However, an actuator that opens and closes the dust control body, a control means that operates the actuator, and a detection means must be provided, and the operation mechanism tends to be large.

  It is an object of the present invention to enable proper automatic opening and closing of the dust control body with a small-scale operation mechanism, and to easily avoid the occurrence of malfunction of the operation mechanism, and to easily perform maintenance work. It is to provide a threshing device that can be performed.

〔Constitution〕
The characteristic configuration of the first aspect of the present invention is that the threshing drainer from the handling chamber is nipped and conveyed by the endless rotating chain and the conveyance guide rod in the rear direction of the machine body, and the dust from the sorting unit is separated by the sorting wind. A threshing apparatus comprising a dust removal control body that opens and closes a wind dust removal path that discharges to the outside, wherein the dust removal control body is configured to change a displacement in a direction of changing a holding interval of the conveyance guide rod with respect to the endless rotating chain. A mechanical interlocking mechanism that transmits as a displacement required for switching the opening / closing posture of the threshing is provided on the threshing feed chain side, and when the distance between the transport guide rod and the endless rotating chain is separated, the dust control body is opened to the opening posture side. When the switching operation is performed and the relative distance between the transport guide rod and the endless rotating chain becomes narrow, the transport guide rod and the dust control system are switched so that the dust control body is switched to the closed posture side. There the body to a point which had been engaged by the mechanical interlocking mechanism, the effects thereof are as follows.

[Action]
According to the characteristic configuration of the first invention, when the amount of processed material in the sorting unit increases, the dust control body is automatically switched to the open position, and when the amount of processed material in the sorting unit decreases, the dust control body closes. Switching operation is automatically performed.

That is, when the amount of cereals supplied to the handling room increases, the amount of processed material supplied to cause the sorting unit to perform the sorting process from the handling room increases. At this time, the amount of threshing wastewater discharged from the handling room increases. Then, the amount of the threshing waste straw conveyed by the waste straw conveying device increases, and the conveyance guide rod moves to the side away from the endless rotating chain.
When the amount of cereal straw supplied to the handling room decreases, the amount of processed material supplied from the handling room to the sorting section decreases. At this time, the amount of threshing wastewater discharged from the handling room is reduced. Then, the amount of the threshing waste straw conveyed by the waste straw conveying device is reduced, and the conveyance guide rod moves toward the endless rotating chain.

As a result, if the set interval is appropriately set based on the change in the distance between the conveyance guide rod and the endless rotating chain accompanying the change in the amount of the threshing waste straw in the waste straw conveying device, the amount of processed material in the sorting unit increases. In this case, the dust control body automatically switches to the open position due to the separation of the transport guide rod from the endless rotating chain and the interlocking between the transport guide rod and the dust control body by the mechanical interlocking mechanism.
When the amount of processed material in the sorting unit decreases, the dust control body closes due to the approach of the transport guide 杆 to the endless rotating chain and the interlocking of the transport guide 杆 and the dust control body by the mechanical interlocking mechanism. Automatically switches to posture.

  According to the characteristic configuration of the first aspect of the present invention, since the mechanical interlocking mechanism is arranged from the conveying guide rod to the threshing feed chain side and connected to the dust control body, the machine is moved from the conveying guide rod to the threshing feed chain side. In order to arrange a part of the mechanical interlocking mechanism, it can be extended from the conveyance guide ridge toward the threshing feed chain side. As a result, it is possible to take a configuration that does not cross the dust discharge path with the fan located below the conveyance guide rod, but bypasses the upper part of the dust discharge path with the fan, and an operation mechanism that opens and closes the dust control body. As for the mechanical interlocking mechanism, the dust discharged by the dust exhaust path with the fan is less likely to adhere to the mechanical interlocking mechanism.

For example, when the mechanical interlocking mechanism is disposed on the opposite side of the feed chain side, the mechanical interlocking mechanism is disposed on the side of the grain storage tank located on the lateral side of the threshing device. Therefore, when performing maintenance on the mechanical interlocking mechanism, it is necessary to work between the grain storage tank and the threshing device, the work posture becomes cramped, and sufficient work space may not be secured. There is. In order to secure a wide working space, it is necessary to take measures such as swinging the grain storage tank to switch it to an open position, and preparation work before the maintenance work may be time-consuming.
On the other hand, in the present invention, since the mechanical interlocking mechanism is arranged on the feed chain side, main maintenance work can be performed from the lateral one side end of the machine body where no other equipment exists, and the grain Without performing an operation of switching the storage tank to an open posture, the work posture is not cramped, the work can be performed with a sufficient work space, and workability can be improved.

〔effect〕
As a result, regardless of changes in the amount of processed material in the sorting section, the dust removal control body is automatically switched to an open or closed posture suitable for the amount of processed material in the sorting section, depending on the amount of dust in the grain and the wind dust path. Although the threshing operation can be performed while suppressing the grain discharge, a small-scale structure that only includes the mechanical interlocking mechanism is sufficient, and it can be obtained at a low cost.
Moreover, it is easy to avoid malfunction due to dust adhesion of the mechanical interlocking mechanism, and from this surface, the dust control body can be appropriately opened and closed, and the mechanical interlocking mechanism is arranged on the threshing feed chain side. Maintenance work can now be performed easily.

〔Constitution〕
The characteristic configuration of the second aspect of the present invention is that a connecting portion of the mechanical interlocking mechanism is provided in the latter half portion of the transport guide rod in the discharge wall transport direction.

[Function and effect]
Even if the waste straws in the waste straw transporting device decrease, the processed material supplied before the reduction still remains in the sorting unit, and the reduction of the processed material in the sorting unit results in the reduction of waste straw in the waste straw transporting device. It occurs late. Assuming that the connecting part of the mechanical interlocking mechanism is set in the first half of the transport guide rod in the direction of transporting the waste wall, even if there is enough work left in the sorting section, dust control There is a possibility that the body is immediately switched to the closed posture.
On the other hand, the connecting part of the mechanical interlocking mechanism is set in the latter half part of the transport guide rod in the discharge direction of the waste wall, so that the dust control body of the dust control body corresponds to the processing situation in the sorting unit. The posture can be switched, and the dust removal control body must be maintained in a state in which dust is discharged, but the closed posture is not quickly switched.

〔Constitution〕
According to a third aspect of the present invention, in the configuration of the first or second aspect of the invention, a first linkage member linked to the conveyance guide rod and a second linkage member linked to the dust control body are provided. The mechanical interlocking mechanism is configured, the first and second linking members are configured to be freely disengaged, the linkage between the first linking member and the second linking member is released, and the dust control body is In order to maintain the open posture, a mechanism for fixing the second linkage member so as not to be displaceable is provided, and the operation and effect thereof are as follows.

[Function and effect]
If part of the mechanical linkage mechanism is damaged and the linkage between the dust control body and the transport guide is broken, the attitude control of the dust control body cannot be performed and a large amount of dust must be discharged. In such a case, there is a concern that the dust control body is kept closed and a large amount of dust enters the second article transport device or the like.
However, according to the third aspect of the present invention, the dust control body is opened by releasing the linkage between the first linkage member and the second linkage member and fixing the second linkage member so that it cannot be displaced. Can be maintained.
As a result, even if there is a failure in the mechanical interlocking mechanism or the like, it is possible to ensure the dust discharge operation that is the minimum necessary function.

〔Constitution〕
According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, there is provided a biasing means for biasing the dust control body to a closed posture. Street.

  In other words, if there is a change in the selected wind power in the wind dust path, the dust control body may frequently switch between the closed position and the open position, but the dust control body is maintained in the closed position by the biasing means. This can stabilize the closed position of the dust control body.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal side view of a threshing apparatus according to an embodiment of the present invention. As shown in this figure, the threshing apparatus according to the present embodiment includes a threshing feed chain 11 provided outside the machine body 1 and a threshing unit 10 having a handling chamber 12 provided in the front part of the machine body, A waste blower transfer device 20 provided behind the chamber 12, a sorting unit 30 having a swing sorting device 31 provided below the handling chamber 12, and a dust exhaust fan provided below the waste blower transfer device 20. A dust discharge unit 40 having 41, a first screw conveyor 2 and a second screw conveyor 3 provided at the bottom of the sorting unit 30, and a waste straw treatment device 50 provided continuously at the rear of the machine body 1. ing.

  This threshing device is equipped with a combine, and performs a threshing process of a harvested cereal mash that has been cut by a combine harvesting unit (not shown), a threshing grain sorting process, and a threshing drainer process.

  That is, the threshing unit 10 includes the threshing feed chain 11 and the handling chamber 12, and a receiving net 13 provided in the lower portion of the handling chamber 12. Do.

  That is, the threshing feed chain 11 supplies the tip side of the harvested grain culm to the handling chamber 12 while nipping and conveying the stock side of the harvested grain culm to the rear side of the machine body. The handling chamber 12 is provided with a handling cylinder 14 that is rotatably driven around an axis in the front-rear direction of the machine body in the handling chamber. The handling cylinder 14 handles the tip side of the supplied harvested cereal meal. The threshing feed chain 11 carries the threshing waste wall from the dust feed port 15 located at the rear end of the handling chamber 12 to the rear of the handling chamber 12.

  The waste straw conveying device 20 is arranged in such a manner that the conveyance start end side is located near the lateral side of the conveyance termination portion of the threshing feed chain 11 and the conveyance termination side is located above the waste straw inlet 51 of the waste straw treatment device 50. The endless rotating chain 21 provided at the rear part and a transport guide rod 22 provided along the endless rotating chain 21 below the transport side of the endless rotating chain 21 are configured.

  As shown in FIGS. 1 and 3, the conveyance start end side and the conveyance end side of the conveyance guide rod 22 are supported on the fuselage side via a vertical connection rod 23 whose upper end is coupled to the conveyance guide rod 22. 24. The support member 24 on the conveyance start end side is fixed to a chain guide that travels and guides the threshing feed chain 11. The support member 24 on the conveyance end side is fixed to the frame 8 of the machine body 1. The support members 24 on the transport start end side and the transport end side support the connecting rod 23 so as to be slidable in the vertical direction. Each of the connecting rods 23 is disposed between the conveying guide rod 22 and the support member 24 and is urged upward by a spring 25 attached to the connecting rod 23 and covered with bellows. Thereby, the conveyance guide rod 22 is urged by the spring 25 so as to approach the endless rotation chain 21.

  The waste straw conveying device 20 inherits the stock source side of the threshing waste straw discharged from the handling chamber 12 from the threshing feed chain 11 between the endless rotating chain 21 and the conveyance guide rod 22, and the threshing waste thus inherited. The endless rotating chain 21 and the conveyance guide rod 22 are arranged in a horizontal posture in which the crown is placed on a support rail (not shown) whose tip side is located closer to the tip side than the waste straw conveying device 20. Thus, the paper is nipped and conveyed in the rearward direction of the machine body and dropped onto the waste straw inlet 51 of the waste straw treatment apparatus 50. The endless rotating chain 21 is arranged such that the distance from the threshing feed chain 11 becomes larger toward the conveyance end side, and the waste straw conveying device 20 is configured so that the threshing waste straw is separated from the machine body 1 with the threshing feed chain side. Transport while moving to the opposite side.

  When the amount of threshing waste straw conveyed by the waste straw conveying device 20 changes, the volume of the threshing waste straw changes, so that the conveyance guide rod 22 is caused by the operating force by the spring and the reaction force from the threshing waste straw. It moves so as to move away from or approach the endless rotating chain 21. As a result, the larger the amount of waste straw, the larger the distance between the conveyance guide rod 22 and the endless rotating chain 21, and the smaller the amount of waste wall, the smaller the distance between the conveyance guide rod 22 and the endless chain 21. become.

  The waste straw processing apparatus 50 includes a shredder case 52 having the waste straw inlet 51 and a long straw outlet 53 provided above the rear end side of the shredder case 52. The shredding case 52 includes a lid 54 that is swingably attached so as to open and close the drainer inlet 51, and a cutter shaft 55 that is provided inside the case so as to be able to be driven and rotated around an axis that faces the machine body. And a cutter shaft 55 and a shredder outlet 57 provided below the supply shaft 56.

  When the lid 54 is operated to close, the waste straw processing apparatus 50 enters a long straw discharge processing state. Then, the waste straw processing apparatus 50 guides the threshing straw from the waste straw transporting apparatus 20 down to the long straw outlet 53 on the outer surface side of the lid 54, and the long straw outlet 53 extends to the ground behind the fuselage. Drop in a straw state.

  When the lid 54 is operated to open, the waste straw processing apparatus 50 enters a shredder release processing state. Then, the waste straw processing device 50 drops the threshing waste straw from the waste straw conveying device 20 from the waste straw inlet 51 into the shredded case 52, and the cutter shaft 55 is arranged in the axial direction of the cutter shaft 55. It is shredded in a slimming direction by a disc-shaped cutting blade provided so as to be integrally rotatable, and a disc-type feeding blade provided so that the supply shaft 56 is arranged in the axial direction of the shaft so as to be integrally rotatable. The waste straw in the state is dropped from the shredded straw discharge port 57 to the ground.

  The sorting unit 30 includes the swing sorting device 31, and further includes a red pepper 32 provided below the front end side of the swing sorting device 31 and a processing rotator 33 provided behind the dust feeding port 15. It is prepared.

  The processing rotator 33 is driven to rotate around the horizontal axis of the machine body and receives and supports the straw scraps discharged from the dust feed port 15 of the handling chamber 12 on the upper Strollac 34 provided in the swing sorting device 31. Dissolve and remove grain from straw.

  The swing sorting device 31 includes the upper stroller cuck 34, a glen pan 35 positioned below the receiving net 13 and a chaff sheave 36, and a stroller rack 37 provided behind the chaff sheave 36. A grain sieve 38 is provided below 36.

  The sorting unit 30 swings and sorts the processed product from the processing rotating body 33 and the processed product dropped and supplied from the handling chamber 12 through the receiving net 13 by the swing sorting device 31 and the waste 32. Sorting into the first processed material, the second processed material, and the processed material for discharge such as straw scraps by the air sorting by the sorting air supplied toward the dust unit 40, the first processed material and the second processed material The product is dropped from the swinging sorter 31 and the processed material for discharge is sent to the dust removing unit 40.

  The first screw conveyor 2 carries out the first processed material dropped from the swing sorting device 31 to the lateral outer side of the machine body 1 and supplies it to the cerealing device 4. The cerealing device 4 feeds threshed grains into a combine grain tank (not shown). The second screw conveyor 3 carries out the second processed material dropped from the swing sorting device 31 to the lateral outer side of the machine body 1 and supplies it to the reduction device 5. The reduction device 5 conveys the second processed material to a reduction port provided on the lateral side wall of the machine body 1, sends the processed material into the machine body from the reduction port, and returns it to the start end side of the swing sorting device 31.

  The dust discharge section 40 includes a fan dust discharge path A having the dust discharge fan 41 and a wind dust discharge path B provided below the fan dust discharge path A.

  The dust exhaust path A with a fan is formed by a fan case 42 in which the dust exhaust fan 41 is drivably accommodated. The dust exhaust path A with a fan includes the dust exhaust fan 41 and the fan case 42. A dust suction port 43 that is a suction port and a dust discharge port 44 that is a discharge port of the fan case 42 are provided.

  The dust suction port 43 is located above the rear end of the swing sorting device 31 so as to open toward the swing sorting device 31. The dust discharge port 44 is located in the shredded case 52 so as to open toward the shredder outlet 57.

  As a result, the dust discharge path A with the fan sucks the processed material for discharge sent out from the rear part of the sorting unit 30 from the dust suction port 43 by the feed force of the dust discharge fan 41 and shreds from the dust discharge port 44. It is discharged out of the machine body through the case 52. The fan-equipped dust discharge path A sucks and discharges a part of the sorting air from the tang 32 together with the processed material.

  The wind dust discharge path B is formed by a portion 42 a of the fan case 42 located below the dust discharge fan 41 and a rear end portion of the swing sorting device 31, and a rear end of the swing sorting device 31. It communicates with the department. The wind dust discharge path B includes a dust discharge port 45 provided at the rear end of the machine body 1 below the dust discharge port 44 of the dust discharge path A with a fan. The dust discharge port 45 opens toward the long straw discharge port 57 of the shredded case 52.

  The wind dust discharge path B introduces the discharge processed material sent out from the sorting unit 30 by the transfer force by the sorting wind from the Karatsu 32 and discharges it from the dust discharge port 45 through the shredded case 52 to the outside of the machine body. .

  The wind dust removal path B includes a plate-shaped dust removal control body 60 provided at a portion slightly inside the machine body from the dust discharge port 45. As shown in FIG. 2, the dust control body 60 is swingably supported on the left and right lateral side walls 1 a of the machine body 1 via a rotation support shaft 61 provided at the upper end of the dust control body 60 so as to be integrally rotatable. .

  FIG. 3A is a side view of the dust control body 60 in the closed posture. As shown in this figure, the dust removal control body 60 is in a closed position when the rotary support shaft 61 is swung downward about the machine body lateral axis of the rotary support shaft 61 by the rotation operation of the rotary support shaft 61. . Then, the dust control body 60 assumes a posture that intersects the processing flow direction of the wind dust path B so as to suppress the passage of the processing object of the wind dust path B.

  FIG. 3B is a side view of the dust control body 60 in the open posture. As shown in this figure, the dust removal control body 60 is in an open position when the rotation support shaft 61 is operated to swing upward about the machine body lateral axis of the rotation support shaft 61 by the rotation operation of the rotation support shaft 61. . Then, the dust removal control body 60 assumes a posture along the processing object moving direction of the wind dust exhaust path B so as to facilitate the passage of the process object in the wind dust exhaust path B.

  As shown in FIG. 2, the dust removal control body 60 includes a driven arm 71 that is rotatably provided integrally with an end portion of the rotation support shaft 61 so as to be connected to a side where the threshing feed chain 11 is located. Further, the mechanical interlocking mechanism 70 is interlocked with a portion where the connection rod 23 on the conveyance end side of the conveyance guide rod 22 is coupled.

  FIG. 2 shows a structure of the mechanical interlocking mechanism 70 in a rear view. FIG. 3 shows the structure of the mechanical interlocking mechanism 70 in a side view. As shown in these drawings, the mechanical interlocking mechanism 70 includes a link mechanism L having the follower arm 71, a rotation interlocking shaft 72 in the lateral direction of the machine body provided outside the dust exhaust path A with the fan, and the like. The connecting rod 23 and a cam-type interlocking portion 80 provided across the connecting rod 23 and the end portion of the rotation interlocking shaft 72 on the threshing feed chain side are configured.

  As shown in FIG. 3, the link mechanism L includes the driven arm 71 and can rotate integrally with an end portion of the rotation interlocking shaft 72 opposite to the side where the cam-type interlocking portion 80 is provided. An oscillating arm 73 is provided, and an interlocking link 74 linking the oscillating arm 73 and the driven arm 71 is provided. The link mechanism L is disposed outside the dust-discharging path A with the fan and the wind dust-discharging path B on the threshing feed chain side with respect to the dust-discharging path A with the fan and the dust-control body 60, and the waste-water conveying device. It is located below the passage 26 of the threshing waste straw conveyed by 20.

  As shown in FIG. 3, the driven arm 71 is provided with a biasing spring 75 as a biasing means at an intermediate position in the longitudinal direction, and biases the dust control body 60 to the closed posture. . When the total value of the urging spring 75 and the spring that pushes up the conveyance guide 22 toward the endless rotating chain 21 is maintained at the closed position by the balance with the weight of the conveyance guide 22 itself, the dust removal control body 60 is maintained. Though conceivable, as shown in FIGS. 2 and 3, a stopper 76 that receives the dust control body 60 biased by the biasing spring 75 may be provided.

  A mounting structure of the dust control body 60 will be described. As shown in FIG. 4, the rotation support shaft 61 is installed over the left and right lateral walls 1 a, and the mounting plate frame 62 is fixed along the axial direction of the rotation support shaft 61, and is discharged to the mounting plate frame 62. The dust receiving plate portion 63 is fixed with bolts, and the dust receiving plate portion 63 is suspended and supported from the mounting plate frame 62. The dust removal control body 60 includes a rotation support shaft 61, a mounting plate frame 62, and a dust collection receiving plate portion 63.

  As shown in FIG. 3, the cam-type interlocking portion 80 includes a swing-type driven arm 81 that is integrally rotatable at an end portion of the rotation interlocking shaft 72, and the driven arm at a lower end portion of the connecting rod 23. And a transmission member 82 made of a round bar material configured and connected so as to extend toward 81.

  The driven arm 81 is provided with a cam surface 83 which is a peripheral surface of a cam surface forming body attached thereto. The transmission member 82 is configured to abut the extended end of the transmission member 82 against the cam surface 83. The driven arm 81 is oscillated and urged via the link mechanism L by an urging spring 75 as an urging means for urging the dust control body 60 to a closed position, thereby transmitting the cam surface 81. The member 82 is urged against the extended end portion.

  When the conveyance guide rod 22 moves away from the endless rotating chain 21 or moves closer to the endless rotating chain 21, the cam-type interlocking portion 80 contacts the extended end portion of the transmission member 82 with the driven arm 81. By connecting the conveyance guide rod 22 and the rotation interlocking shaft 72 by contact, the conveyance guide rod 22 and the dust control body 60 are interlocked as follows.

  That is, as shown in FIG. 3B, when the conveyance guide rod 22 moves so as to be separated from the endless rotation chain 21 and the interval between the conveyance guide rod 22 and the endless rotation chain 21 reaches the set interval D, As shown in FIG. 3A, the dust control body 60 is in the open position, and the conveyance guide rod 22 moves so as to approach the endless rotation chain 21, and the conveyance guide rod 22 and the endless rotation chain 21 are moved. When the interval is smaller than the set interval D (less than the set interval), the dust control body 60 is interlocked so as to be in the closed posture.

  Further, when the distance between the transport guide rod 22 and the endless rotating chain 21 is an interval exceeding the set interval D (more than the set interval), the transport guide rod 22 is moved relative to the endless rotating chain 21 in this case. Absorbed by the sliding contact of the extended end of the transmission member 82 with the cam surface 83, the transmission from the transport guide rod 22 to the dust control body 60 is cut off, and the dust control body 60 is maintained in the open position. Linked.

That is, the mechanical interlocking mechanism 70 threshs the outside of the dust removal path A with the fan and the threshing of the dust removal path A with the fan from the part where the connection rod 23 on the conveyance end side of the conveyance guide rod 22 is connected. The conveyance guide rod 22 and the dust control body 60 are interlocked with each other passing through the outside on the feed chain side and reaching the threshing feed chain side of the dust control body 60 and being connected to the dust control body 60.
Thereby, when the conveyance guide rod 22 moves so as to be separated from the endless rotation chain 21 by the set interval D or more, the dust control body 60 is in the open posture in conjunction with this, and the conveyance guide rod 22 is endless. If it moves so that it may be located in less than the said setting space | interval D with respect to the rotation chain 21, the dust removal control body 60 will be in the said closed position in response to this.

  When the amount of cereals supplied to the handling chamber 12 increases, the amount of the processed product supplied from the handling chamber 12 to the sorting unit 30 increases, and the amount of processing products for discharge such as straw scraps generated in the sorting unit 30 increases. . Then, it becomes easy to generate | occur | produce dust mixing of the 1st processed material and the 2nd processed material. When the amount of cereals supplied to the handling chamber 12 decreases, the amount of processed material supplied from the handling chamber 12 to the sorting unit 30 decreases. Then, it becomes easy to generate | occur | produce the scattering of the grain by a selection wind. If the amount of cereal straw supplied to the handling chamber 12 increases, the amount of threshing waste straw supplied to the waste straw transporting device 20 increases, and the distance between the transport guide trough 22 and the endless rotating chain 21 increases. As the set interval D, an interval that occurs when the amount of processed material for discharge generated in the sorting unit 30 increases is set.

  As a result, when the amount of cereal straw supplied to the handling chamber 12 increases, the dust removal unit 40 moves away from the endless rotation chain 21 of the conveyance guide basket 22 by the set interval D or more, and the mechanical interlocking mechanism 70. Thus, the dust control body 60 is automatically switched to the open posture, and the discharge processed material from the sorting unit 30 is discharged out of the machine body by the dust discharge path A with the fan and the wind dust discharge path B.

  When the amount of the culm supplied to the handling chamber 12 decreases, the dust discharging unit 40 is discharged by the movement of the conveyance guide basket 22 that is less than the set interval D with respect to the endless rotation chain 21 and the mechanical interlocking mechanism 70. The dust control body 60 is automatically switched to the closed position, and the processed material for discharge from the sorting unit 30 is discharged outside the machine mainly through the dust discharge path A with a fan.

  Next, a configuration for maintaining the dust control body 60 in an open posture will be described. As shown in FIG. 5, the swing arm 73 linked to the transport guide rod 22 is a first linkage member. On the other hand, the linkage link 74 linked to the dust control body 60 is used as the second linkage member. The oscillating arm 73 and the interlocking link 74 are configured so as to be freely disengaged, the association between the oscillating arm 73 and the interlocking link 74 is released, and the driven arm 71 and the interlocking link 74 are discharged around the rotation support shaft 61. The front end portion of the interlocking link 74 is attached and fixed to the lateral side wall 1a of the machine body 1 by swinging toward the conveyance start end side. The lateral side wall 1a is provided with a fastening bolt hole (or a screw hole) 1b for attaching and fixing the distal end portion of the interlocking link 74, and the interlocking link 74 as the second linking member is fixed so as not to be displaced. It is configured in the mechanism to do.

[Another embodiment]
Instead of the cam-type interlocking portion 80 shown in the above embodiment, the extended end portion of the interlocking member 82 and the swingable driven arm 81 may be linked directly via a connecting pin or the like.

  Instead of the dust control body 60 shown in the above embodiment, a dust control body configured in a rake shape may be adopted.

  Although the connection part of the mechanical interlocking mechanism 70 is provided in the terminal position of the conveyance guide 22, the said connection part should just be provided in the latter half part in the discharge wall carrier conveyance direction of the conveyance guide rod 22. FIG.

  As the biasing means, a torsion spring or the like can be used in addition to the coil spring. However, when the self-weight of the dust control body 60 can be used to set the dust control body 60 in the closed posture, the biasing spring 75 may not be provided.

Longitudinal side view of threshing device Longitudinal rear view of a threshing device provided with a mechanical interlocking mechanism that links a conveyance guide and a dust control body (A) Side view showing a state in which the dust control body is set in a closed position, (b) Side view showing a state in which the dust control body is set in a closed position Vertical side view showing the installation structure of the dust control body Side view showing a state where the dust control body and the conveyance guide rod are not linked and the dust control body is maintained in an open state.

Explanation of symbols

1b Fixing Mechanism 11 Threshing Feed Chain 12 Handling Room 20 Waste Wall Transporter 21 Endless Rotating Chain 22 Transport Guide Shaft 30 Sorting Unit 60 Dust Removal Control Body 61 Rotating Spindle 70 Mechanical Interlocking Mechanism 73 First Linking Member 74 Second Linking member 75 Energizing means B

Claims (4)

A waste wall conveying device that sandwiches and conveys the threshing waste wall from the handling room with an endless rotating chain and a conveyance guide rod, and a wind dust removal path that discharges dust from the sorting section to the outside of the body by the sorting wind. A threshing device comprising a dust control body that opens and closes,
A mechanical interlocking mechanism is provided on the threshing feed chain side for transmitting a displacement in a direction of changing a holding interval of the conveyance guide rod with respect to the endless rotation chain as a displacement required for switching the opening / closing posture of the dust control body, When the distance between the conveyance guide rod and the endless rotation chain is increased, the dust removal control body is switched to the open posture side, and when the relative distance between the conveyance guide rod and the endless rotation chain becomes narrow, A threshing device in which the conveyance guide rod and the dust control body are interlocked by the mechanical interlocking mechanism so as to switch the dust control body to the closed posture side.   The threshing apparatus according to claim 1, wherein a connecting portion of the mechanical interlocking mechanism is provided in a second half portion of the transport guide rod in the direction of transporting the waste straw.   A first linkage member linked to the transport guide rod and a second linkage member linked to the dust control body constitute the mechanical interlocking mechanism, and link the first and second linkage members. A mechanism that is configured to be releasable and that fixes the second linkage member so as not to be displaceable in order to release the linkage between the first linkage member and the second linkage member and maintain the dust control body in an open posture. The threshing apparatus according to claim 1 or 2 provided.   The threshing apparatus according to any one of claims 1 to 3, further comprising an urging unit that urges the dust control body to a closed posture.

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