JP2017006071A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a threshing device capable of adjusting an opening degree of a dust-sending valve reliably by reducing occurrence of mechanical twisting in the dust-sending valve adjusted in the opening degree.SOLUTION: The threshing device includes: rotation drive means 31; driving side rotation transmission means 32 connected and interlocked with a drive shaft of the rotation drive means 31; driven side rotation transmission means 33 rotated by being interlocked with the driving side rotation transmission means 32; a dust-sending valve 34 rotated by being interlocked with the driven side rotation transmission means 33; rotation angle detection means 35 detecting a rotation angle of the dust-sending valve 34; and control means C controlling drive of the rotation drive means 31 based on a detection result of the rotation angle detection means 35.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a threshing device, and more particularly, to a structure of an opening adjustment unit that adjusts the opening (retraction angle) of a dust feed valve provided in the threshing device.

  DESCRIPTION OF RELATED ART Conventionally, there exist some which were disclosed by patent document 1 as one form of the threshing apparatus provided with the dust feed valve which adjusts the residence time of threshing processed materials, such as a grain and sawdust in a handling chamber. That is, in Patent Document 1, a plurality of dust feeding valves extending in the lateral direction intersecting the axial direction of the handling cylinder are arranged immediately above the handling cylinder of the threshing device, An opening degree adjusting unit for adjusting the opening degree (retraction angle) of the dust delivery valve is linked and connected. The opening adjustment unit is provided with a support piece extending in the axial direction of the handling cylinder on the handling chamber cover that covers the upper part of the handling cylinder, and one side portion of each dust feeding valve is provided on the support piece via the swing support shaft. Are connected to each swing support shaft, a base end portion of the operation arm is connected to each swing support shaft, and a connection piece extending in the axial direction of the handling cylinder is connected to a distal end portion of each operation arm. A female screw member is attached to one end of the motor, and an electric motor is interlocked and connected to the female screw member via a male screw rod.

  The opening degree adjusting unit configured as described above is configured so that the male screw rod is forwardly or reversely rotated by driving the electric motor in the normal direction or the reverse direction, and the connecting piece is connected via the female screw member screwed to the male screw rod. Are moved forward and backward linearly, and each operating arm is swung in conjunction with the forward and backward movement of the connecting piece, and each dust delivery valve is moved to one side of each operating arm in conjunction with the swinging movement. It is possible to adjust the opening degree (retraction angle) of each dust delivery valve by swinging in a curve integrally with the center.

Japanese Patent Laid-Open No. 10-313656

  However, in the above-described opening adjustment structure of the dust delivery valve, the connecting piece is linearly moved back and forth via the female screw member screwed to the male screw rod, and each dust delivery valve is moved to one side thereof. Since it is rocked integrally and curved around the center, mechanical twisting (twisting) occurs between each member interposed between the male screw rod and each dust delivery valve, There is a possibility that the opening degree of the dust delivery valve cannot be steadily adjusted.

  Accordingly, an object of the present invention is to provide a threshing device that can reduce the occurrence of mechanical twisting in a dust feed valve whose opening degree is adjusted, and can steadily adjust the opening degree of the dust feed valve. And

The invention described in claim 1
A threshing device in which a dust feed valve is arranged in the handling chamber so that the opening degree can be adjusted, and the residence time of the threshing processed material such as grains and sawdust is adjusted by adjusting the opening degree of the dust feeding valve. Because
Rotation drive means;
Drive-side rotation transmission means linked to the rotation drive means;
Driven side rotation transmission means that rotates in conjunction with the drive side rotation transmission means;
A dust delivery valve that rotates in conjunction with the driven side rotation transmission means;
Rotation angle detection means for detecting the rotation angle of the dust delivery valve;
Control means for driving and controlling the rotation drive means based on the detection result of the rotation angle detection means;
It has.

  According to the first aspect of the present invention, when the opening of the dust delivery valve is adjusted, the rotational force is transmitted from the rotational drive means → the drive side rotational transmission means → the driven side rotational transmission means → the dust delivery valve. That is, the only acting force transmitted to the dust feed valve whose opening degree is adjusted is the rotational force. Therefore, it is possible to reduce the occurrence of mechanical twisting while the acting force is transmitted from the rotation driving means to the dust delivery valve. Therefore, the opening degree of the dust delivery valve can be adjusted steadily.

Invention of Claim 2 is invention of Claim 1, Comprising:
A rotation drive means, a drive side rotation transmission means, and a rotation angle detection means can be integrally attached to the chamber cover covering the upper portion of the chamber via support means, and the handling of these means can be performed. The mounting position with respect to the chamber cover can be fine-tuned integrally.

  In the invention according to claim 2, the rotation drive means, the drive-side rotation transmission means and the rotation angle detection means can be integrally attached to the handling chamber cover covering the upper portion of the handling chamber via the support means. Therefore, it is possible to easily attach and remove (assemble / disassemble) these means. At this time, the mounting position of these means with respect to the chamber cover can be finely adjusted integrally, so that the mounting accuracy can be improved.

Invention of Claim 3 is invention of Claim 1 or 2, Comprising:
The driven side rotation transmission means can be mechanically fixed to the handling chamber cover that covers the upper part of the handling chamber, and the dust feed valve can be fixed via the driven side rotation transmission means.

  In the invention described in claim 3, since the dust feed valve can be fixed by mechanically fixing the driven side rotation transmission means, even when the rotation drive means is stopped due to the occurrence of an electrical trouble. Threshing work can be continued by mechanically fixing the dust delivery valve.

Invention of Claim 4 is invention of Claim 3, Comprising:
A mark is provided on the inner wall of the chamber cover, which is the initial setting position of the dust delivery valve
By aligning the dust delivery valve with this mark, the dust delivery valve is set to the initial setting position,
By fixing the driven side rotation transmission means mechanically, the dust delivery valve is fixed via the driven side rotation transmission means,
The driving side rotational transmission means is interlocked with the fixed driven side rotational transmission means, and the output voltage of the rotational angle detection means in this interlocking connection state is stored in the control means as an initial set value.

  According to the fourth aspect of the present invention, when setting the dust delivery valve to the initial setting position, there is no trouble of finely adjusting the dust delivery valve by rotationally driving the rotational drive means. That is, when setting the dust delivery valve to the initial setting position, first, the dust delivery valve is set to the initial setting position by matching the dust delivery valve with the mark that is the initial setting position of the dust delivery valve. Subsequently, the dust-feeding valve is fixed via the driven-side rotational transmission means by mechanically fixing the driven-side rotational transmission means. Next, the driving side rotational transmission means is interlocked with the fixed driven side rotational transmission means, and the output voltage of the rotational angle detection means in this interlocking connection state is stored in the control means as an initial set value. Then, the rotation drive means, the drive side rotation transmission means, and the rotation angle detection means are integrally assembled, and the drive side rotation transmission means is linked to the driven side rotation transmission means. In this way, the dust delivery valve can be easily and firmly set at the initial setting position without rotationally driving the rotational drive means.

  According to the present invention, it is possible to reduce the occurrence of mechanical twisting in the dust delivery valve whose opening degree is adjusted, and thus the opening degree of the dust delivery valve can be steadily adjusted.

The left view of the combine which concerns on this embodiment. The expansion left side explanatory drawing of a threshing part. The expansion plane explanatory drawing of a threshing part. The expanded cross-section front explanatory drawing of a threshing part. The left view of a dust feeder. The top view of a dust feeder. The front view of a dust feeder. The perspective explanatory drawing of a dust feeder. The bottom view of a dust feeder. Control block diagram.

  Embodiments of the present invention will be described below with reference to the drawings. A shown in FIG. 1 is a combine according to the present embodiment, and the combine A includes the threshing apparatus according to the present invention. First, the outline | summary about the whole structure of the combine A is demonstrated.

[Overview of the overall structure of the combine]
As shown in FIG. 1, the combine A is provided with a machine frame 2 on a pair of left and right crawler type traveling units 1, 1 and conveyed with a cutting unit 4 via a cutting frame 3 at a left front part of the machine frame 2. The part 5 is attached so as to be movable up and down. In the front part on the left side on the machine body frame 2, a threshing part 6, a threshing part 7 as a threshing device, and a sorting part 8 are arranged, and a slaughtering part 9 is arranged in the rear part. On the other hand, a cabin 10 that surrounds a driving unit (not shown) is disposed in the right front part on the machine body frame 2, and a grain storage unit 11 is disposed in the middle part on the right side. The grain unloading part 12 is communicated with the grain storage part 11 and is arranged immediately after. A prime mover portion (not shown) made of an engine or the like is disposed at a position on the body frame 2 in the rear lower portion of the cabin 10 so that the operation portions of the above portions are operated by the driving force of the engine. . Reference numeral 13 denotes a milling cylinder interposed between the sorting unit 8 and the grain storage unit 11 in a standing state.

  In the combine A configured as described above, the culm is harvested by the harvesting unit 4, the harvested cereal is conveyed to the rear cereal transporting unit 6 by the transport unit 5, and the cereal is transferred to the cereal transporting unit 6. In addition, the strainer of the cereal is sandwiched by the cereal basket transfer unit 6, and the tip is transferred backward while being inserted into the threshing unit 7.

  At this time, the tip of the cereal is threshed by the threshing unit 7, and the threshed grain is sorted by the sorting unit 8, and only the fresh grain (first grain) is cerealed through the milled cylinder 14. It is conveyed to the grain storage unit 11. In the grain storage unit 11, the transported fresh grains are input and stored, and the fresh grains stored in the grain storage unit 11 can be appropriately carried out of the machine by the grain unloading unit 12. It is said. Further, the threshed cereal is transported to the slaughter processing unit 9 as sewage, and is shredded by the slaughter processing unit 9 and then carried out of the machine.

[Description of the structure of the threshing unit]
Next, the structure of the threshing part 7 which is a characteristic structure of the combine A is demonstrated, referring FIGS. That is, the threshing unit 7 has a handling chamber 20 that is a longitudinal space in the front-rear direction. The handling chamber 20 covers the ceiling surface and the upper left half surface with a handling chamber cover 21. The handling room cover 21 is formed in a front view L-type (saddle shape) from a ceiling part 22 covering the upper part of the handling room 20 and a left side wall part 23 covering the upper left side of the handling room 20, and a threshing part 7, the right edge of the ceiling portion 22 is pivotally supported on the upper end portion of the inner wall portion 24 via a pair of front and rear pivot portions 25, and is opened upward with the pivot portions 25 as the center. And a closed position covering the handling chamber 20 are openable and closable. a is the opening and closing direction. The ceiling portion 22 is formed in a front and rear longitudinal horizontal plate shape, and an inner wall 22a having a left side edge portion formed in a downwardly inclined manner and an outer wall 22b formed in a front and rear longitudinal substantially horizontal plate shape are opposed to each other in the vertical direction. And formed. The left side wall part 23 is formed by arranging an inner wall 23a and an outer wall 23b, which are formed in a longitudinal and longitudinal vertical plate shape, to face each other in the horizontal direction. In the handling chamber 20, a handling cylinder 26 is pivoted around a handling cylinder support shaft 28 whose axis is directed in the front-rear direction, and a receiving net 27 is provided at a position directly below the handling cylinder 26. Is stretched. Reference numeral 29 denotes a fixed blade projecting inward on the inner wall 23a.

  A dust delivery device 30 is disposed on the ceiling portion 22. That is, the dust feeding device 30 includes an electric motor 31 as a rotation driving means capable of forward / reverse rotation driving, a pinion gear 32 as a driving side rotation transmission means linked to a drive shaft of the electric motor 31, and a pinion gear 32. As a sector gear 33 as a driven side rotation transmission means that rotates in conjunction, a dust feed valve 34 that rotates in conjunction with the sector gear 33, and a rotation angle detection means that detects the rotation angle of the dust delivery valve 34. Potentiometer 35 and a controller C as control means for driving and controlling the electric motor 31 based on the detection result of the potentiometer 35. The dust delivery valve 34 is attached to the inner surface side of the ceiling portion 22 in a hanging shape, and is disposed in the handling chamber 20 so that the opening degree can be adjusted. And the dust feeder 30 adjusts the residence time of the threshing processed material, such as a grain and dust in the handling chamber 20, in other words, the rearward transfer speed of the threshing processed material, by adjusting the opening degree of the dust supply valve 34. It is possible.

  In the present embodiment configured as described above, when the opening of the dust feed valve 34 is adjusted, the rotational power is transmitted from the electric motor 31 to the pinion gear 32 → the sector gear 33 → the dust feed valve 34. That is, the acting force transmitted to the dust feed valve 34 whose opening is adjusted is only the rotational force. Therefore, it is possible to reduce the occurrence of mechanical twisting while the acting force is transmitted from the electric motor 31 to the dust feed valve 34. Therefore, the opening degree of the dust delivery valve 34 can be adjusted steadily.

  An electric motor 31, a pinion gear 32, and a potentiometer 35 can be integrally attached to the chamber cover 21 covering the upper portion of the chamber 20 via a support substrate 40 as a support means. The attachment position with respect to the chamber cover 21 can be finely adjusted integrally.

  In the present embodiment configured as described above, the electric motor 31, the pinion gear 32, and the potentiometer 35 can be integrally attached to the handling chamber cover 21 covering the upper portion of the handling chamber 20 via the support substrate 40. Since the support substrate mounting unit U is provided, the support substrate mounting unit U can be easily attached / detached (assembled / disassembled). At this time, since the mounting position of the support substrate mounting unit U with respect to the chamber cover 21 can be finely adjusted integrally, the electric motor 31, the pinion gear 32, and the support substrate 40 of the potentiometer 35 forming the support substrate mounting unit U are interposed. The mounting accuracy can be improved.

  More specifically, the support substrate 40 is formed in a rectangular plate shape, and a potentiometer 35 is attached to the upper surface side of the support substrate 40, while the electric motor 31 and its drive are mounted on the lower surface side of the support substrate 40. A pinion gear 32 attached to the shaft is attached to form a unit (supporting substrate attaching unit U). In the left and right front and rear portions of the support substrate 40, left elongated holes 41 for fine adjustment of the horizontally long mounting position are provided in the left and right direction. The support substrate 40 is disposed in the front center portion of the ceiling portion 22 of the handling chamber cover 21. That is, on the inner wall 22 a of the ceiling portion 22, two left side mounting leg pieces 42 and 42 for mounting the left side portion of the support substrate 40 are erected. The two left mounting leg pieces 42, 42 are attached to the left edge of the inner wall 22a with the lower end portions 42a, 42a spaced apart in the front-rear direction, and the middle portions 42b, 42b are raised straight upward. The upper end portions 42c and 42c are formed to protrude horizontally to the right side. A right mounting leg piece 43 is suspended from the right front portion of the support substrate 40. The right mounting leg piece 43 has an upper end portion 43c attached to the right front portion of the support substrate 40, the midway portion 43b is suspended downward from the right edge position of the support substrate 40, and the lower end portion 43a is moved to the right side. It is formed to protrude horizontally. The lower end 43a is provided with a right elongated hole 47 for fine adjustment of the mounting position that is horizontally long in the left-right direction. The lower end portion 43a is attached by a mounting bolt 45 via a right long hole 47 on a leg platform 44 placed on the front halfway portion of the inner wall 22a.

  The support substrate 40 formed in this manner is finely adjusted in the left-right direction on the upper end portions of the two mounting leg pieces 42 and 42 and on the leg platform 44 by the mounting bolts 45 through the left and right elongated holes 41 and 47. It is adjustable and detachably attached. Here, the three attachment leg pieces 42, 42, 43 are projected upward from an opening 46 formed in a square shape in plan view at the front center portion of the outer wall 22 b, and attached to the support substrate 40 and further to the support substrate 40. The supporting substrate mounting unit U such as the electric motor 31 is disposed above the opening 46. Therefore, the electric motor 31 or the like attached to the support substrate 40 interferes with the inner and outer walls 22a and 22b when the support substrate 40 is attached to the two attachment leg pieces 42 and 42 and the leg mounting base 44, thereby -It is possible to prevent the outer walls 22a and 22b from being damaged.

  The electric motor 31 is attached to the lower surface of the support substrate 40 from below via a reinforcing plate 48. A pinion gear 32 is attached to the drive shaft of the electric motor 31, and the pinion gear 32 is horizontally disposed directly below the rear center portion of the support substrate 40.

  The pinion gear 32 is arranged horizontally with the axis line in the vertical direction directly below the rear center portion of the support substrate 40. A sector gear 33 is disposed behind the pinion gear 32, and both the gears 32 and 33 are engaged in the front-rear direction.

  The sector gear 33 is formed in a fan shape in plan view, a gear portion 33a is formed at a front end edge portion formed in an arc shape, and a base end portion 33b is disposed rearward. In the middle of the sector gear 33, an arc-shaped opening adjustment long hole 60 that extends in the left-right direction and curves forward is formed. An opening scale 63 is attached to the opening edge of the opening adjustment long hole 60. In the present embodiment, a scale for decreasing the degree of opening by 5 degrees is attached to the left side around the opening degree scale 63 of 15 degrees, while a scale for increasing the degree of opening by 5 degrees is attached to the right side. ing. That is, five opening scales 63 with the opening degrees of 5 degrees to 25 degrees are attached.

  The dust delivery valve 34 pivotally supports a plurality of (six in this embodiment) dust delivery valve forming pieces 50 extending in the left-right direction along the inner surface of the inner wall 22a, and a middle portion of each dust delivery valve forming piece 50. The belt-like pivot support piece 51 having a longitudinal longitudinal direction and the interlocking connecting piece 52 having a longitudinal longitudinal direction connecting the right end portions of the dust feeding valve forming pieces 50 are provided. The six dust feeding valve forming pieces 50 are arranged at intervals in the front-rear direction along the inner surface of the inner wall 22a, and the second dust feeding valve forming piece 50 is linked to the sector gear 33 for driving. The other dust-feeding valve forming pieces 50 are used as driven dust-feeding valve forming pieces 50. The belt-like pivot piece 51 includes a short-sided short piece 51a in the front-rear direction, a boss part 51b provided continuously with the rear end part of the short piece 51a, and a front-rear direction provided with the front end part provided continuously with the boss part 51b. It is formed from a longitudinal piece 51c. The middle part of the first dust feeding valve forming piece 50 from the front is pivotally connected to the front end of the short piece 51a. The boss portion 51b is arranged in a penetrating manner in the opening 46, and a pivot shaft 53 having an axis line in the vertical direction is inserted into the boss portion 51b, and the outer wall 22b is inserted into the upper end portion of the pivot shaft 53. A base end portion 33b of the sector gear 33 disposed above is attached. On the other hand, the lower half of the pivot shaft 53 is attached with a middle part of the second drive dust-feeding valve forming piece 50 from the front disposed below the outer wall 22b, and the sector gear 33 and the dust-feeding valve forming piece 50 are attached. Are integrated through a pivot shaft 53. Then, the rotational movement of the sector gear 33 causes the dust-feeding valve forming piece 50 for driving to integrally rotate through the pivot shaft 53 so as to change its opening degree. In the longitudinal piece 51c, the middle part of each of the third to sixth dust feeding valve forming pieces 50 from the front is pivotally supported by a pivotal connection bolt 54, and the longitudinal piece 51c is connected to the outer wall 22b. The interlocking connecting piece 52 is pivotally connected to the right end portion of each dust feeding valve forming piece 50 by a pivot connecting pin 55 whose axis is directed in the vertical direction, and the dust sending valve forming piece 50 for driving is rotated. In conjunction with the operation, the other dust feeding valve forming pieces 50 are also integrally rotated so that all the dust feeding valve forming pieces 50 are changed to the same opening degree. Here, θ shown in FIG. 9 is an opening, and the opening θ is a left-right imaginary line K that intersects the pivot shaft 53, and a drive feed that is retracted backward about the pivot shaft 53. It is an angle (retraction angle) formed between the extension line P of the dust valve forming piece 50. Reference numeral 56 denotes a lid that covers the opening 46 from above. The lid 56 is formed in a cap shape, is detachably attached to the outer wall 22b, and is exposed through the opening 46 to the support substrate attachment unit U and the sector gear 33. The short piece 51a, the boss 51b, the pivot shaft 53 and the like can be freely opened and closed.

  A sector gear 33 can be mechanically fixed to the chamber cover 21 covering the upper part of the chamber 20, and a dust feed valve 34 can be fixed via the sector gear 33. Since the dust transmission valve 34 can be fixed by mechanically fixing the sector gear 33, even if the electric motor 31 is stopped due to an electrical trouble, the dust transmission valve 34 is mechanically fixed. By fixing, the threshing operation can be continued.

  More specifically, a short piece 51a is arranged immediately below the opening adjustment long hole 60 provided in the middle of the sector gear 33, and is opposed to the opening adjustment long hole 60 in the vertical direction. A bolt support piece 61 formed in a frontal portal type is placed on the short piece 51a. In the middle of the bolt support piece 61, the lower end portion of the fixing bolt 62 inserted through the opening adjustment long hole 60 is screwed and supported. The sector gear 33 can be fixed to the short piece 51 a via the bolt support piece 61 by tightening the fixing bolt 62. As a result, the drive dust-feeding valve forming piece 50 integrally attached to the sector gear 33 via the pivot shaft 53 can be fixed at a constant opening θ. At this time, by setting the posture of the sector gear 33 with the fixing bolt 62 through the opening adjustment slot 60, the opening θ of the dust feeding valve forming piece 50 can be arbitrarily set.

  The potentiometer 35 is an angle detection sensor that detects the rotation angle of the sector gear 33 that rotates about the pivot shaft 53 in conjunction with the rotation operation of the pinion gear 32. The potentiometer 35 mounts a main body 71 on a front-view portal-type sensor mounting base 70 mounted on the right rear portion of the support substrate 40, and passes the sensor mounting base 70 from the main body 71 to direct the sensor shaft 72 downward. The base end portion of the sensor arm 73 extending backward is attached to the lower end portion of the sensor shaft 72. An arm contact pin 64 protrudes upward from the left front portion of the sector gear 33 so that the front end (rear end) of the sensor arm 73 is in contact with the peripheral surface of the arm contact pin 64. . When the sector gear 33 is rotated, the sensor arm 73 is rotated via the arm contact pin 64, the sensor shaft 72 is rotated in conjunction with the rotation of the sensor arm 73, and the rotation of the sensor shaft 72 is performed. The main body 71 electrically detects the moving operation as a rotation amount. As a result, the rotation operation of the drive dust feeding valve forming piece 50 that rotates integrally with the sector gear 33, that is, the opening degree θ is detected.

  The controller C is a computer device that includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like that are connected to each other via an internal bus, and is disposed at an appropriate place such as a driving unit. doing. The CPU has a built-in timer, reads a control program stored in the ROM into the RAM, and executes drive control of the electric motor 31 and the like according to the control program.

  As shown in FIG. 10, the controller C is electrically connected with a volume-type opening degree setting switch 80 provided in the operation unit and a potentiometer 35 for detecting the opening degree of the dust feeding valve 34 via an input interface. On the other hand, the electric motor 31 is electrically connected via the output interface. The operation information from the opening setting switch 80 is input via the input interface. On the other hand, the controller C that has acquired the operation information generates control information according to the control program based on the operation information, and generates the generated control. Information is output to the electric motor 31 via the output interface. The electric motor 31 rotates the sector gear 33 via the pinion gear 32, and the drive dust-feeding valve forming piece 50 integrally linked to the sector gear 33 via the pivot shaft 53, and the driven linked to it. The dust delivery valve forming piece 50, that is, the dust delivery valve 34 is rotated. At this time, the potentiometer 35 detects the rotation angle (opening degree) of the drive dust-feeding valve forming piece 50 via the sector gear 33 and constantly outputs the detection information to the controller C. The controller C When it is determined that the detected rotation angle (opening) detection information matches the opening set by the opening setting switch 80, the electric motor 31 is provided with control information for stopping the drive. Output.

  As shown in FIG. 9, a mark 85 serving as an initial setting position of the dust feed valve 34 is provided on the inner surface of the inner wall 22 a of the chamber cover 21, and the dust feed valve 34 is aligned with the mark 85, thereby The valve 34 is set to the initial setting position, and the sector gear 33 is mechanically fixed, so that the dust feed valve 34 is fixed via the sector gear 33, and the pinion gear 32 is interlocked and connected to the fixed sector gear 33. The output voltage of the potentiometer 35 in the connected state is stored in the controller C as an initial set value.

  More specifically, a mark 85 is provided on the inner surface of the inner wall 22a of the chamber cover 21 as an initial setting position of the driving dust feed valve forming piece 50 that forms a part of the dust feed valve 34. . The mark 85 is formed in a small circular shape. By aligning the front end edge portion 50a of the driving dust feeding valve forming piece 50 with the center portion of the mark 85, the driving dust feeding valve forming piece 50 is initialized. In the present embodiment, the opening adjustment slot 60 is initially set at the center (opening 15 degrees), and the opening setting switch 80 can arbitrarily adjust the opening and closing with the opening 15 degrees as the center. . Subsequently, when the sector gear 33 is fixed to the short piece 51 a via the bolt support piece 61 by tightening the fixing bolt 62 inserted through the opening adjustment long hole 60, the sector gear 33 is integrally connected. The driving dust feed valve forming piece 50 is also fixed at the initial setting position. The sector gear 33 fixed at the initial setting position is engaged with the pinion gear 32, and the output voltage of the potentiometer 35 in this engagement state is output to the controller C as detection information as an initial setting value, and the detection information is transmitted to the controller C. Remember me. Thereafter, the fixing bolt 62 is loosened to release the fixing of the sector gear 33 to the short piece 51a via the bolt support piece 61. In this way, the initial setting of the dust delivery valve 34 can be completed.

  In the present embodiment configured as described above, there is no trouble of finely adjusting the dust feed valve 34 by rotating the electric motor 31 when the dust feed valve 34 is set to the initial setting position. In addition, the support substrate mounting unit U in which the electric motor 31, the pinion gear 32, and the potentiometer 35 are integrally assembled with the support substrate 40, and the sector gear 33 is engaged with the pinion gear 32 of the support substrate mounting unit U, so The dust delivery valve 34 can be easily and firmly set to the initial setting position without driving the motor 31 to rotate.

[Description of other components of the threshing unit]
A fixing member 100 is provided on the left front portion of the threshing unit 7, and a lock mechanism 110 and an oil cylinder 120 as an opening / closing support unit are interposed between the fixing member 100 and the handling chamber cover 21. .

  The lock mechanism 110 attaches a hook 114 to the inner wall 23a of the left side wall portion 23, and allows the hook 114 to be engaged with and released from a lock pin 112 provided on the fixing member 100. The hook 114 is connected via an interlocking link 116. Thus, the base end portion of the operation lever 118 that is swingably attached to the outer wall 23b is interlocked. The hook 114 is elastically biased in a direction to engage with the lock pin 112. Reference numeral 122 denotes an opening / closing handle attached to the outer wall 23b. The hook 114 can be disengaged from the lock pin 112 via the interlocking link 116 against the elastic bias by rotating the operation lever 118 upward. Therefore, the operating chamber cover 21 can be opened by rotating the operating lever 118 upward and rotating the operating chamber cover 21 upward via the opening / closing handle 122. At this time, the handling chamber cover 21 can be easily opened and closed by the opening / closing assist function (open / close assist function) of the oil cylinder 120.

  A narrowing mechanism 130 is provided on the left side wall portion 23. That is, the narrowing mechanism 130 includes a plurality of narrowing bars 132 that are arranged to be exposed downward from the lower end edge of the left side wall part 23, and the inner narrowing mechanism 130 so as to press and bias each narrowing bar 132 downward. And a pressing biasing body 134 disposed between the outer walls 23a and 23b. The plurality of narrows 132 are formed by being connected in series in the front-rear direction.

  The threshing unit 7 is provided with a threshing left wall 140 that covers the lower left half of the handling chamber 20. Inside the threshing left wall 140, a front driven sprocket 142 is provided at the front, while at the rear A rear driven sprocket 144 is provided, a drive sprocket 146 is provided in the middle, and a feed chain 148 is wound between these sprockets. Reference numeral 150 denotes an intermediate driven sprocket.

  The plurality of narrow bars 132 and the upper rotating side portion of the feed chain 148 are arranged to face each other in the vertical direction, and are pressed and biased toward the lower feed chain 148 by the pressing biasing body 134. With the narrow rod 132 and the upper rotating side portion of the feed chain 148, the stock base portion of the cereal can be sandwiched, and the stock portion is fed with the head portion disposed in the handling chamber 20. By rotating the chain 148, the cereal can be transferred rearward and upward. At this time, the tip portion is threshed by the handling drum 26, and the threshed grain and the like are transferred backward by the dust feed valve 34. The transfer speed (the residence time in the handling chamber) of the grain and the like by the dust delivery valve 34 is appropriately adjusted by adjusting the size of the opening θ of the dust delivery valve 34 according to the amount of the grain etc. It can be changed. Reference numeral 152 denotes a waste transfer chain provided in the waste processing unit 9. The waste transfer chain 152 receives waste from the feed chain 148 and transfers waste.

  In addition, the structure of the dust feeding valve 34 demonstrated as mentioned above can be equipped in the threshing part 7, and is restricted to the threshing part 7 with which the self-decomposing combine A like this embodiment is equipped. Moreover, it can be applied to the threshing section provided in the ordinary combine.

A Combine C Controller 20 Handling chamber 21 Handling chamber cover 30 Dust feeding device 31 Electric motor 32 Pinion gear 33 Sector gear 34 Dust feeding valve 35 Potentiometer 40 Support substrate

Claims (4)

A threshing device in which a dust feed valve is arranged in the handling chamber so that the opening degree can be adjusted, and the residence time of the threshing processed material such as grains and sawdust is adjusted by adjusting the opening degree of the dust feeding valve. Because
Rotation drive means;
Drive-side rotation transmission means linked to the rotation drive means;
Driven side rotation transmission means that rotates in conjunction with the drive side rotation transmission means;
A dust delivery valve that rotates in conjunction with the driven side rotation transmission means;
Rotation angle detection means for detecting the rotation angle of the dust delivery valve;
Control means for driving and controlling the rotation drive means based on the detection result of the rotation angle detection means;
A threshing apparatus comprising:   A rotation drive means, a drive side rotation transmission means, and a rotation angle detection means can be integrally attached to the chamber cover covering the upper portion of the chamber via support means, and the handling of these means can be performed. The threshing device according to claim 1, wherein the attachment position with respect to the chamber cover can be finely adjusted integrally.   3. The driven side turning transmission means can be mechanically fixed to the handling chamber cover covering the upper part of the handling room, and the dust feed valve can be fixed via the driven side turning transmission means. Threshing device. A mark is provided on the inner wall of the chamber cover, which is the initial setting position of the dust delivery valve
By aligning the dust delivery valve with this mark, the dust delivery valve is set to the initial setting position,
By fixing the driven side rotation transmission means mechanically, the dust delivery valve is fixed via the driven side rotation transmission means,
The drive side rotation transmission means is linked to the fixed driven side rotation transmission means, and the output voltage of the rotation angle detection means in the linked connection state is stored in the control means as an initial set value. 3. The threshing device according to 3.

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