JP2013183726A - Threshing cylinder structure of thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid deficient husk treatment at a rear side of a threshing cylinder while suppressing increase of driving load at front side of the threshing cylinder.SOLUTION: There is provided a threshing part 3 provided with a threshing chamber 8 receiving a treating object from a front feeding port 8a and a threshing cylinder 11 placed in the threshing chamber 8 in a direction to direct a rotary shaft 15 in a longitudinal direction of the cylinder and threshing the threshing object according to rotary driving in a prescribed direction. The threshing cylinder 11 is provided with: a plurality of bar members 28 parallelly arranged in circumferential direction interposing specific gaps and a plurality of rod-shaped threshing teeth 10 protruding from the bar members 28 interposing a prescribed spaces in the direction of the rotary axis; the rod-shaped threshing teeth 10 contain rod-shaped threshing teeth 10A protruded outward from the threshing cylinder along the radial direction of the threshing cylinder and free from slant angle in rotational direction of the threshing cylinder and rod-shaped threshing teeth 10B having a slant angle in rotational direction of the threshing cylinder; and rod-shaped threshing teeth 10 positioned at a front side of the threshing chamber 8 are the rod-shaped threshing teeth 10B having a slant angle.

Description

  The present invention relates to a barrel structure of a threshing apparatus, and more particularly to a barrel structure including a crosspiece member and a rod-shaped handle.

  A handling cylinder having a plurality of crosspiece members arranged in parallel at a predetermined interval in the circumferential direction and a plurality of bar-shaped tooth teeth protruding from the crosspiece member at a predetermined interval in the rotation axis direction is known. It has been. This type of handling cylinder is mainly used in general-purpose combiners, and even if the supply of processed material to be threshed unexpectedly increases, the processed material is inserted between the crosspieces into the hollow part in the handling cylinder. Since it can take in temporarily, there exists an advantage that a threshing process can be continued, avoiding the abnormal increase in a drive load.

  Further, as shown in Japanese Patent Application Laid-Open No. 2004-133620, as a handling cylinder provided with a crosspiece member and a rod-shaped handle tooth, the attachment posture of the rod-shaped handle tooth is set to a non-retracting attachment posture having no receding angle with respect to the rotation direction of the handle cylinder. Some switches can be switched to a retracted mounting posture with a receding angle with respect to the trunk rotation direction. In Patent Document 1, by appropriately switching the tooth handling between the backward mounting posture and the non-backward mounting posture, the increase in driving load and the lack of threshing processing can be suppressed regardless of the nature and supply amount of the processed material. It is said that high-precision threshing can be performed.

JP 2009-219444 A

  However, since the handle cylinder shown in Patent Document 1 switches the mounting posture of the bar-shaped teeth on a crosspiece unit basis, any rod-shaped teeth with a receding angle and no bar-shaped teeth with no receding angle can be selected in the circumferential direction. However, in the direction of the rotation axis (back and forth direction of the handling chamber), the arrangement of the bar-shaped tooth handling teeth with a receding angle and the bar-shaped tooth handling teeth without the receding angle is uniform, It was difficult to adapt to the required processing capacity.

The present invention has been created in order to solve these problems in view of the above-described circumstances, and a handling chamber to which a processed material is supplied from a front supply port and a rotating shaft face front and rear. And a threshing device that is disposed in the handling chamber and performs a threshing process of a processed object in response to rotational driving in a predetermined direction, wherein the handling cylinders are arranged in parallel at predetermined intervals in the circumferential direction. And a plurality of bar-shaped teeth projecting on the bar member at a predetermined interval in the rotation axis direction, the bar-shaped teeth are arranged along the diameter of the barrel A rod-shaped tooth that protrudes outward from the barrel and has no receding angle with respect to the rotation direction of the barrel and a rod-shaped tooth with a receding angle with respect to the rotation direction of the barrel, and is located on the front side of the handling chamber It is characterized in that the tooth handling is a rod-shaped tooth handling with a receding angle.
Further, when the rod-shaped teeth located on the front side of the handling chamber are changed to the rod-shaped teeth having a receding angle, the receding angle of the rod-shaped teeth is gradually decreased by one unit toward the rear side of the handling chamber. It is characterized by that.
Further, when the rod-shaped teeth located on the front side of the handling chamber are changed to the rod-shaped teeth having a receding angle, the receding angle of the rod-shaped teeth is gradually reduced in units of a plurality toward the rear side of the handling chamber. It is characterized by that.

According to the first aspect of the present invention, since the bar-shaped tooth handle that performs the majority of the threshing action and is located on the front side of the handle room where the driving load is large is the bar-shaped tooth handle having a receding angle, It is possible to suppress the increase of the driving load by suppressing the catch, and on the rear side of the handling chamber where the driving load is relatively small, the processing object can be reliably hooked by the rod-like tooth having no receding angle. A decrease in threshing accuracy due to insufficient threshing treatment can also be avoided.
According to the second aspect of the present invention, when the bar-shaped tooth located on the front side of the handling chamber is used as a bar-shaped tooth having a receding angle, the receding angle of the bar-shaped tooth is set to one toward the rear side of the handling chamber. Since the size is gradually reduced in units, it is possible to prevent the processing object from stagnating between the region of the bar-shaped teeth having a receding angle and the region of the bar-shaped teeth having no receding angle, or a sudden increase in load. In addition, since the receding angle is reduced in units of one unit, it is possible to more smoothly transfer the workpiece between the regions than in the case where the receding angle is decreased stepwise in units of a plurality of units.
According to the third aspect of the present invention, when the bar-shaped tooth located on the front side of the handling chamber is used as a bar-shaped tooth having a receding angle, a plurality of receding angles of the bar-shaped tooth facing toward the rear side of the handling chamber are provided. Since it is reduced step by step in this unit, it is possible to avoid a stagnant treatment or a sudden increase in load between the bar-shaped tooth handling area with the receding angle and the bar-shaped tooth handling area without the receding angle. . In addition, since the receding angle is gradually reduced in units of a plurality, the manufacturing process can be simplified and the cost can be reduced as compared with the case where the receding angle is reduced in units of one.

It is a side view of a general purpose combine. It is an internal side view of a threshing part. It is a side view of the handling cylinder concerning a first embodiment. (A) is AA sectional drawing of the handling cylinder which concerns on 1st embodiment, (B) is BB sectional drawing, (C) is CC sectional drawing. It is an expanded view of the handling cylinder which concerns on 1st embodiment. It is a side view of the handling cylinder which concerns on 2nd embodiment. (A) is DD sectional drawing of the handling cylinder which concerns on 2nd embodiment, (B) is EE sectional drawing, (C) is FF sectional drawing. It is an expanded view of the handling cylinder which concerns on 2nd embodiment. It is a side view of the handling cylinder which concerns on 3rd embodiment. It is GG sectional drawing of the handling cylinder which concerns on 3rd embodiment. It is an expanded view of the handling cylinder which concerns on 3rd embodiment. It is a side view of the handling cylinder concerning the first reference example. It is HH sectional drawing of the handling cylinder which concerns on a 1st reference example. It is an expanded view of the handling cylinder which concerns on a 1st reference example. It is a side view of the handling cylinder which concerns on a 2nd reference example. (A) is II sectional drawing of the handling cylinder which concerns on a 2nd reference example, (B) is JJ sectional drawing, (C) is an effect | action explanatory drawing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a general-purpose combiner, and the general-purpose combine 1 includes a reaping part 2 that cuts stalks and a threshing part 3 that threshs and sorts grains from the stalks that are put into the whole pod. A grain tank 4 for storing the selected grains, an auger 5 for carrying the grains in the grain tank 4 out of the machine, an operation unit 6 on which the operator gets on, and a crawler type traveling unit 7 It is prepared for.

  As shown in FIG. 2, the threshing unit 3 includes a handling chamber 8 into which the whole cutting stem culm is charged from the front supply port 8 a and a sorting chamber 9 for sorting the grains that have leaked from the handling chamber 8. The grain selected in the sorting room 9 is transferred to the grain tank 4 via a not-illustrated milling cylinder.

  The handling chamber 8 includes a handling cylinder 11 that performs threshing processing with a rod-shaped tooth treatment tooth 10 described later, a receiving net 12 that is disposed along the lower side of the handling cylinder 11 and that allows grains that have been shed from the stems to leak, It comprises a dust feed valve 13 that sends the processed material in the chamber 8 backward, and a dust exhaust port 14 that discharges the waste that has reached the end of the handling chamber 8 without leaking from the receiving net 12. . The handling cylinder 11 is driven to rotate about a rotating shaft 15 disposed in the handling chamber 8 so as to face front and rear. That is, as a full throwing type threshing device, an axial flow type in which the handling cylinder axis faces the front-rear direction and a direct current type in which the handling cylinder axis points in the left-right direction are known, but embodiments of the present invention The general-purpose combine 1 according to the above employs an axial flow type.

  The sorting chamber 9 includes a swinging sorter 16 that swings and sorts the grains leaked from the receiving net 12, a compressed air fan 17 that generates a sorting wind in front of the swinging sorter 16, and the first thing. The first helix 18 to be collected and the second helix 19 to collect the second thing are provided. And the first thing collected by the first helix 18 is transferred to the grain tank 4 via the milled cylinder, and the second thing collected by the second helix 19 is passed through the second reducing cylinder (not shown). Thus, it is reduced onto the rocking sorter 16.

  The swing sorter 16 includes a grain pan 20 that sequentially conveys the grains that have leaked from the receiving net 12, a chaff sheave 21 that sifts and sorts the grains behind the grain pan 20, and a grain that has leaked from the chaff sheave 21. Further, it is a swing assembly provided with a grain sieve 22 for screening, and is reciprocally swung continuously at a predetermined cycle by a swing mechanism (not shown).

[First embodiment]
Next, the handling cylinder 11A according to the first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 3 to 5, the handling cylinder 11 </ b> A includes the rotating shaft 15, the scraping portion 23 provided integrally with the front end portion of the rotating shaft 15, and the rear end position of the scraping portion 23. To the rear end portion of the rotary shaft 15.

  The scraping portion 23 includes a frustoconical drum 25 provided integrally with the rotary shaft 15 and a spiral plate 26 provided integrally with the outer peripheral portion of the drum 25. The stems supplied from the supply port 8a are actively scraped into the handling chamber 8 according to the rotational drive of the handling cylinder 11A and transferred to the rear threshing processing unit 24.

  The threshing processing unit 24 is arranged in parallel with a plurality of discs 27 integrally provided on the rotary shaft 15 with a predetermined interval in the front-rear direction and with an outer peripheral portion of the disc 27 with a predetermined interval in the circumferential direction. A plurality of crosspiece members 28 to be supported and a plurality of bar-shaped teeth 10 protruding from the crosspiece member 28 at a predetermined interval in the rotation axis direction are provided.

  The crosspiece member 28 of the present embodiment is made of a metal pipe having a circular cross section, and a plurality of through holes are formed at predetermined intervals in the length direction. The rod-shaped handle teeth 10 are made of a metal bar having a circular cross section, are integrally fixed to the crosspiece member 28 in a state of penetrating through the through holes, and protrude outwardly from the handle cylinder radial direction.

  According to such a threshing processing unit 24, the threshing processing is performed with the receiving net 12 by the rod-shaped tooth handling teeth 10 hitting or hooking the stems according to the rotational drive of the handling cylinder 11. At this time, by temporarily taking the processed material in the handling chamber 8 from between the crosspiece members 28 into the hollow portion in the handling cylinder 11, an abnormal increase in driving load accompanying an unexpected increase in the processed material is avoided. The threshing process can be continued.

  By the way, most of the threshing action by the handling cylinder 11 is performed on the front side of the handling cylinder 11 (threshing processing unit 24). For example, in the threshing processing unit 24 of the present embodiment, it is assumed that 80% or more of the grain is threshed at the front side portion (1/3 portion). In such a handling cylinder 11, the load on the front part of the threshing processing unit 24 is large. In particular, when the supply amount of the processed material increases, an abnormal load may act on the front part of the threshing processing unit 24. . Therefore, the handling cylinder 11 according to the embodiment of the present invention solves the above problem by the following configuration.

  The rod-shaped teeth 10 are protruded outwardly along the diameter of the barrel and have no receding angle with respect to the rotation direction of the barrel, and the rod-shaped teeth having a receding angle with respect to the rotation direction of the barrel. Teeth 10B are included. For example, in the present embodiment, the crosspiece member 28 is divided into three in the front-rear direction, and the end of the divided crosspiece member 28 is rotatably fitted to a support shaft 29 projecting from the disk 27. The receding angle of the rod-like tooth 10B can be set according to the fixed angle of the crosspiece member 28 with respect to the angle.

  The crosspiece member 28 is fixed to the circular plate 27 by bolting fixing plates 30 provided at both ends of the crosspiece member 28 to the circular plate 27. At this time, in this embodiment, a plurality of bolt insertion holes 27a are formed in the circular plate 27 along a circular arc centered on the support shaft 29 and spaced at a predetermined interval in the circular arc direction, and bolt insertion holes for inserting bolts are formed. The receding angle (eg, no receding angle, small receding angle, large receding angle) of the rod-shaped teeth 10A, 10B can be switched stepwise based on the selection of 27a, but the receding angle may not be switchable. .

  The rod-shaped tooth handle 10B having a receding angle is disposed on the front side of the handle cylinder 11, and the rod-shaped tooth handle 10A having no receding angle is disposed on the rear side of the handle cylinder 11. In this case, the bar-shaped tooth 10 that performs most of the threshing action and is located on the front side of the handling chamber 8 having a large driving load becomes the bar-shaped tooth 10B having a receding angle. The increase in driving load can be suppressed by suppressing the catch. In addition, on the rear side of the handling chamber 8 with a relatively small driving load, the processing object can be reliably hooked by the rod-shaped tooth handling teeth 10A having no receding angle, so that a reduction in threshing accuracy due to insufficient threshing processing can also be avoided. .

  In the present embodiment, when the bar-shaped tooth 10 located on the front side of the handling chamber 8 is changed to a bar-shaped tooth 10B having a receding angle, the receding angle of the bar-shaped tooth 10B is set to a plurality of units toward the rear side of the handling chamber 8. The number is reduced stepwise (for example, two steps) by (for example, six). For example, the receding angle of the bar-shaped tooth handling teeth 10B provided in the front area of the threshing processing section 24 is θ2, the receding angle of the bar-shaped tooth handling teeth 10B provided in the intermediate area of the threshing processing section 24 is θ1 (θ1 <θ2), and the threshing processing section. The receding angle of the rod-like tooth 10A provided in the rear region of 24 is set to 0 °.

  As described above, when the receding angle of the bar-shaped tooth 10B decreases toward the rear side of the handling chamber 8, there is a difference between the area of the bar-shaped tooth 10B having the receding angle and the area of the bar-shaped tooth 10A having no receding angle. It is possible to avoid the stagnation of the processed material or the sudden increase in load. In addition, in this embodiment, the receding angle is gradually reduced in units of a plurality of units, so that the manufacturing process can be simplified and the cost can be reduced as compared with the case where the receding angle is reduced in units of one unit.

[Second Embodiment]
Next, a handling cylinder 11B according to a second embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 6 to 8, the handling cylinder 11 </ b> B according to the second embodiment of the present invention divides the crosspiece member 28 into two in the front-rear direction, and sets the bar-shaped handle teeth 10 </ b> B provided on the front crosspiece member 28 to a receding angle. There is a difference from the first embodiment in that the rod-shaped teeth 10A provided on the rear beam member 28 have no receding angle. Even if it does in this way, there can exist an effect substantially the same as 1st embodiment.

  Further, in the first embodiment, the receding angle of the bar-shaped teeth 10B is changed in units of the crosspiece members 28. However, in this embodiment, the receding angle of the bar-shaped teeth teeth 10B provided on the front-side bars 28 is the handling chamber. The number is reduced stepwise (for example, in two steps) in units of a plurality (for example, five) toward the rear side of 8. In this way, not only can the processing object stagnate between the region of the rod-like tooth 10B having a receding angle and the region of the rod-like tooth 10A having no receding angle, or a sudden increase in load can be avoided, Compared to the first embodiment, the structure can be simplified and the number of parts can be reduced.

[Third embodiment]
Next, a handling cylinder 11C according to a third embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 9 to 11, the handling cylinder 11 </ b> C according to the third embodiment of the present invention divides the crosspiece member 28 into two in the front-rear direction, and the rod-shaped toothpick 10 </ b> B provided in the front half portion of the front crosspiece member 28. Is different from the first embodiment and the second embodiment in that the rod-shaped teeth 10A provided in the rear half of the front beam member 28 and the rear beam member 28 have no retraction angle. . Even if it does in this way, there can exist an effect substantially the same as 1st embodiment and 2nd embodiment.

  Further, in the second embodiment, the receding angle of the rod-shaped handle teeth 10B provided on the front beam member 28 is gradually reduced in units of a plurality toward the rear side of the handling chamber 8, but the third embodiment In this case, the receding angle of the bar-like tooth 10B provided on the front beam member 28 is made smaller in units of one toward the rear side of the handling chamber 8. Even if it does in this way, it can avoid that a processed material stagnates between the area | region of the rod-shaped tooth-treating tooth 10B with a receding angle, and the area | region of the rod-shaped tooth-treating tooth 10A without a receding angle, or a load increases rapidly. In addition, since the receding angle is reduced in units of one unit, it is possible to more smoothly transfer the workpiece between the regions than in the case where the receding angle is decreased stepwise in units of a plurality of units.

[First Reference Example]
Next, the handling cylinder 11D according to the first reference example will be described with reference to FIGS.

  As shown in FIGS. 12 to 14, the handling cylinder 11 </ b> D according to the first reference example has a single bar member 28 that is not divided in the front-rear direction, a rod-like tooth 10 </ b> A having no receding angle, and a bar-like shape having a receding angle. The point which alternately arranged the tooth-handling 10B is different from embodiment of this invention. In such a handle cylinder 11D, although the overall load is reduced by the rod-shaped teeth 10B having the receding angle, the rod-shaped teeth 10B having the receding angle and the receding angle in the rotation axis direction (front and rear direction of the chamber). Since the disposition (ratio) of the rod-shaped handle teeth 10A that are not present is uniform, it is difficult to match the processing capability required for each region in the front-rear direction of the handle chamber 8.

[Second Reference Example]
Next, a handling cylinder 11E according to a second reference example will be described with reference to FIGS.

  As shown in FIGS. 15 and 16, the handling cylinder 11E according to the second reference example divides the crosspiece member 28 into two in the front-rear direction, and supports the front crosspiece member 28 to be rotatable within a predetermined range. The point which biases this crosspiece member 28 with the spring 31 to a predetermined direction is different from embodiment of this invention. Here, the rotation range of the front beam member 28 is such that the rod-shaped tooth handle 10C provided on the front beam member 28 has a receding angle from a rotation position where the rod-shaped tooth treatment 10C is in a non-retreating posture without a retraction angle. The spring 31 urges the crosspiece member 28 in the direction in which the bar-shaped tooth 10C is in the non-retreating posture.

  In this way, the rod-shaped teeth 10C provided on the front beam member 28 are in a non-retreating posture during non-threshing processing that does not receive a load, and are in a retreating posture during threshing processing that receives a load. Although it is possible to achieve substantially the same operational effects, if the rod-shaped tooth 10C is made movable, not only the strength and reliability are lowered, but also the cost is greatly increased due to the complexity of the structure and the increase in the number of parts. There is a problem of inviting.

DESCRIPTION OF SYMBOLS 1 General purpose combine 3 Threshing part 8 Handling room 8a Supply port 9 Sorting room 10A Bar-shaped tooth treatment (there is no receding angle)
10B Bar-shaped teeth (with receding angle)
DESCRIPTION OF SYMBOLS 11 Handling cylinder 12 Receiving net 13 Dust feed valve 14 Dust outlet 15 Rotating shaft 24 Threshing processing part 27 Disc 28 Crosspiece

Claims (3)

A handling chamber to which the processed material is supplied from the front supply port;
A threshing device provided with a handling cylinder that is arranged in the handling chamber so that the rotation axis faces front and rear, and that performs threshing processing of a processed object according to rotational driving in a predetermined direction,
The handling cylinder is
A plurality of crosspieces arranged in parallel at predetermined intervals in the circumferential direction;
A plurality of bar-shaped teeth that project from the crosspiece member at a predetermined interval in the direction of the rotation axis;
The rod-shaped teeth are
A rod-like tooth having a receding angle with respect to the barrel rotation direction and a rod-like tooth having a receding angle with respect to the barrel rotation direction. A barrel structure for a threshing apparatus, characterized in that the rod-shaped tooth handling located on the front side of the chamber is a rod-shaped tooth handling with a receding angle.   When the rod-shaped teeth located on the front side of the chamber are used as the rod-shaped teeth having a receding angle, the receding angle of the rod-shaped teeth is gradually decreased toward the rear side of the chamber. The handling cylinder structure of the threshing device according to claim 1 characterized by things.   When the rod-shaped tooth handling located on the front side of the handling chamber is changed to a rod-shaped tooth handling with a receding angle, the receding angle of the rod-shaped tooth handling is gradually reduced in units of a plurality toward the rear side of the handling chamber. The handling cylinder structure of the threshing apparatus of Claim 1 characterized by these.

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