JP2011050326A - Head-feeding type thresher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head-feeding type thresher that is suitable for threshing Indica rice whose grains are easily shelled while grain culms are threshed under nippingly conveying the reaped grain culms using a threshing feed chain. <P>SOLUTION: The head-feeding type thresher has the following structure: three or four threshing cylinder frames 18 are constructed over the space between a first support member 16 and a second support member 17 installed on both ends in the axial direction of a threshing cylinder shaft 15 respectively and at intervals in the threshing cylinder-revolving circumferentially; and a plurality of rod-like threshing teeth 19 are attached in a cantilever manner to the threshing cylinder frames 18 projectedly outwardly and at intervals along the threshing cylinder shaft 15 in the axial direction, thus constructing a threshing cylinder 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a self-dehulling type threshing machine that threshs between a handling cylinder and a receiving net while nipping and conveying a cereal meal with a threshing feed chain.

  As a handling barrel of a conventional self-removing type threshing machine, a rod-like body is bent into a substantially V shape to form a tooth handling, and both ends of the V-shaped tooth handling are attached around a cylindrical drum. Is known (see FIG. 4 of Patent Document 1).

  Since japonica rice produced in Japan is relatively difficult to thresh, many teeth are planted in the axial direction and circumferential direction of the barrel as described in Patent Document 1 so that threshing suitable for this can be performed. Has been.

Indica rice produced in India, Thailand, China's central south, and Southeast Asia generally has a cereal length of 1.5 to 2.0 times that of japonica, and the culm length is very long. And in threshing, it is very easy to thresh.
Although it is possible to thresh Indica rice with a conventional self-threshing threshing machine as shown in Patent Document 1, in the case of Indica rice, when threshing begins in the handling room of the self-threatening threshing machine In the latter half of the handling room, the whole rice cake is shattered, and the cereal rice cake held by the feed chain is shredded and the amount of straw waste increases. In particular, when the cereal is moist, a long cereal wraps around the drum of the barrel, and the cereal is easily shredded or pulled out from the stock. In the case of the self-removing type threshing machine of Patent Document 1, since there is only a narrow space between the drum of the handling cylinder and the receiving net or the top plate, when a large amount of straw waste is generated, the waste waste cannot be completely discharged and clogged. It can also be a cause.
Moreover, in the self-removal type threshing machine of the said patent document 1, manufacture of a handling cylinder takes a comparatively man-hour, and there exists room for improvement in productivity.

JP 2008-193910 A

  The present invention is a self-removing type suitable for threshing of an Indica rice whose grains are easy to be threshed while being a self-removing type threshing machine that threshs while holding the stock of the harvested cereal straw by a threshing feed chain The purpose is to provide a threshing machine.

[Configuration of the first invention]
The first invention is configured as follows.
In a self-removing threshing machine that threshs between a handling cylinder and a receiving net while sandwiching and conveying cereals with a threshing feed chain, a first support member and a second support provided at both axial ends of the handling cylinder Three or four handling cylinder frames are installed over the members at intervals in the circumferential direction of the handling cylinder, and projecting outward from the handling cylinder frame, and the handling cylinder shaft A plurality of rod-like teeth are attached to the barrel frame in a cantilever manner at intervals along the axial direction of the barrel.

[Operation of the first invention]
According to the configuration of the first invention, the handling cylinder is constructed by laying three or four handling cylinder frames at intervals in the circumferential direction of the handling cylinder. It is a frame type handling cylinder arranged at an interval of 90 degrees or more, and the culms during threshing are only the gap between the handling cylinder (in this case, the rotation trajectory of the handling cylinder frame) and the receiving net or top plate. In addition, the cereal can move to the inside of the handling cylinder (inside the rotation trajectory of the handling cylinder frame between the adjacent handling cylinder frames) having a wide space between the adjacent handling cylinder frames. Thus, even with a long cedar, the tip is locked to the handle, and the cereal wraps around the handle, like a drum-type handle (see Patent Document 1) with a handle attached to the drum. There is no such thing. Therefore, there is no inconvenience such as an increase in straw waste in the handling chamber when the cereal wraps around the handling cylinder and the cereal is torn off or pulled out.

  As in the configuration of the first invention, the handling cylinder is a frame type in which tooth handling is attached to the handling cylinder frame and only three or four handling cylinder frames are provided around the handling cylinder. It is possible to move from the barrel frame to the inside of the barrel, which increases the space for movement of the culm and lowers the density of the stalks in the chamber, so that the cereal is a drum type barrel. In addition, it is not pressed down more than necessary, and a soft threshing operation (relatively free movement of the cereal and reduced handling of the cereal) is performed, and the generation of straw waste is reduced by a drum-type handling cylinder. This can be greatly reduced compared to the case of.

In particular, when the number of handling cylinder frames is small, such as 3 or 4, in the circumferential direction, a certain culm in one stubble is handled by a plurality of teeth, and the culm is shredded. Combined with the elimination or reduction of the threshing, the threshing load is also reduced, the energy loss can be reduced, and the generation of straw waste is effectively reduced.
Compared to drum-type barrels, the space inside the shed cereal husks is widened and soft threshing is possible, so not only indica rice but also crops with good threshing properties and scratches are likely to occur. Threshing can be suitably performed even on crops and crops that tend to clog (wet crops and long crops).

  Even with drum-type drums, threshing can be performed softly by reducing the number of teeth in the barrel axis and circumferential direction. Due to the frictional force caused by the wrapping, the stalks are shredded, and the amount of threshing waste straw and the cereals with ears (unthreshing cereals) cannot be threshed easily.

  Also, when the number of teeth handling is reduced with a drum-type handling cylinder, the materials used to manufacture the handling cylinder for the number of teeth handling and the manufacturing effort (manufacturing man-hours) cannot be reduced, resulting in poor productivity. Compared to the above, according to the configuration of the first invention, the number of teeth can be changed only by changing the number of the barrels, the number of the barrels can be easily changed, and the number of teeth is changed. When changing the number of teeth, instead of changing the number of teeth handling as in the case of the drum type, the number of handling cylinder frames can be increased or decreased in accordance with the number of teeth handling, so that productivity is also good.

[Effect of the first invention]
According to the configuration of the first invention, the number of handling frames is set to a small number of 3 or 4, so that when the cereal straw is put into the handling room, it is not drastically shattered and is predetermined. Since the transport distance of the threshing feed chain required to reach the threshing processing state becomes longer than the case where the number of handling cylinders is six or eight, for example, the threshing processing amount per unit length of the handling cylinder is It is mitigated and intensive degranulation at the start end of the cylinder is alleviated. In addition, since the number of times the cereal meal is handled by the tooth handling is reduced, the occurrence of extra waste is reduced, and the overall efficiency of the threshing process and the sorting process can be improved.

  The first invention is particularly effective for threshing cereals with a long culm length, such as indica rice, and does not generate a large amount of straw scraps, thus improving the grain recovery efficiency while being able to thresh well without clogging. I was able to do it.

[Configuration of the second invention]
The second invention is configured as follows in the structure of the first invention.
The teeth are protruded outward from the barrel frame along the radial direction of the barrel.

[Operation and effect of the second invention]
According to the second aspect of the present invention, the tooth handling is projected outwardly along the radial direction of the handling cylinder on the handling frame, so that the cereals held by the threshing feed chain are handled in the handling chamber. When receiving a handling action by contacting the teeth, the cereal will not be caught too strongly against the handling teeth, and the catch will not become too easy to come off, and a good handling action can be exhibited. Thereby, it can thresh without generating a lot of straw scraps, and standard threshing can be performed.

[Configuration of the third invention]
The third invention is configured as follows in the structure of the first invention.
The teeth are projected outward from the handle frame in a state having a predetermined receding angle on the upper side in the handle rotation direction with respect to the radial direction of the handle cylinder.

[Operation and effect of the third invention]
According to the third aspect of the present invention, the handle teeth project outwardly in a state having a predetermined receding angle on the upper side of the handle barrel rotation direction with respect to the handle barrel radial direction on the handle frame. While the grain is threshed by the tooth handling, the candy that is pinched by the threshing feed chain and is in contact with the tooth handling inside the handling chamber can easily escape to the outside along the tooth handling. The amount that is caught and shredded is reduced. As a result, the amount of waste waste processing product is reduced, so that the selection efficiency is improved and the grain recovery efficiency can be further improved.

[Configuration of the fourth invention]
The fourth invention is configured as follows in the structure of the first invention.
The teeth are protruded outwardly in a state having a predetermined advancing angle on the lower side in the rotation direction of the barrel relative to the radial direction of the barrel, on the barrel frame.

[Effects of the fourth invention]
According to the fourth aspect of the present invention, the handle teeth are projected outwardly in a state having a predetermined advance angle on the upper side of the handle barrel rotation direction with respect to the handle barrel radial direction on the handle barrel frame. When the culm held by the threshing feed chain touches the tooth handle in the handling chamber and receives a handling action, it is handled so as to be caught strongly by the tooth handling, so that the grain in the cereal grain is handled by the tooth handle. It becomes easy to be dropped. As a result, the grain collection efficiency could be improved.

[Configuration of the fifth invention]
The fifth invention is configured as follows in the structure of the first invention.
A posture having a predetermined receding angle on the upper side in the rotation direction of the barrel and a predetermined advance on the lower side in the rotation direction of the barrel relative to the posture toward the outer side in the radial direction of the barrel on the barrel frame. It is attached to an arbitrary posture between the postures having the corners so that the position can be changed.

[Effects of the fifth invention]
According to the fifth invention, when the properties of the harvested cereal are easy to shed and cracks are easily generated, the properties of the harvested cereal are attached to the posture having a receding angle on the tooth handling teeth. However, when the cereal is short and relatively difficult to shed, the angle of the handle is adjusted by adjusting the angle of the handle so that it is attached in a posture having an advance angle to the handle. By changing the posture to a posture having a corner or a posture having a forward angle, a threshing operation suitable for the properties of the cereal can be performed.

[Configuration of the sixth invention]
The sixth invention is configured as follows in any one of the first to fifth inventions.
A straw cutting blade for cutting the processed material is attached to the handling chamber that houses the handling cylinder.

[Effects of the sixth invention]
During handling of cereals, if the scraps are carried while being caught on the teeth, the handling function of the teeth that are trapped by the straws is reduced, but according to the sixth invention, the treatment is cut into the handling chamber. Since a straw cutting blade is attached and the straw scraps caught by the tooth-handling are cut by the straw cutting blade, it is possible to suppress the reduction of the handling action and perform good threshing.

[Configuration of the seventh invention]
The seventh invention is configured as follows in the structure of the sixth invention.
In the handling chamber, a plurality of the straw cutting blades are juxtaposed from the middle part in the longitudinal direction of the handling cylinder toward the lower side in the grain conveying direction.

[Effects of the seventh invention]
According to the seventh invention, since a plurality of straw cutting blades are arranged side by side in the handling chamber, even if the scrap waste gradually increases in the latter half of the handling chamber, A good threshing operation can be continued without being carried around and without causing clogging in the handling chamber.

[Configuration of the eighth invention]
The eighth invention is configured as follows in any one of the first to seventh inventions.
In the handling cylinder, a truncated conical body having a tapered shape is formed toward the upper side in the transport direction on the first support member side provided on the upper side in the grain transport direction.

[Effects of the eighth invention]
According to the eighth invention, the cereals supplied to the handling chamber are tapered toward the upper side in the conveying direction without staying at the conveying start end (the cereal conveying upper end) to the handling cylinder. The truncated cone-shaped body is smoothly conveyed toward the outer periphery of the barrel rotation between the barrel and the receiving net, thereby enabling good threshing work.

[Configuration of the ninth invention]
The ninth invention is configured as follows in any one of the first to eighth inventions.
The receiving net is constituted by a plate-like body having a smooth inner surface on the handling cylinder side and formed with a number of mesh holes.

[Effects of the ninth invention]
According to the ninth aspect of the present invention, the cedar can be forcibly brought close to the handling cylinder with the bow metal, such as when the cedar is caught on the inner surface of the receiving net or the bow metal protrudes from the inner surface of the receiving net. Therefore, even if it is a long and easy-to-break cereal like indica rice, it does not generate a large amount of straw scraps and can perform a good threshing operation.

It is a vertical left side view of the threshing machine in the combine. It is a partial longitudinal section (development) side view of a handling cylinder. It is a partial longitudinal cross-sectional front view of the treatment cylinder which shows a tooth treatment. It is a partially longitudinal front view of a threshing machine. It is an expanded view of a receiving network. It is a partial longitudinal section (development) side view of the handling cylinder of another embodiment. It is a partial longitudinal cross-sectional front view of the treatment cylinder which shows the tooth-handling of another embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal left side view of a threshing machine in a combine, and FIG. 2 is a partial longitudinal side view of a handling cylinder. As shown in these drawings, the combine threshing machine 1 exemplified in the present embodiment applies a handling process to the harvested and transported grain culm held by the threshing feed chain 2 and transported into the handling chamber 3. The handling cylinder 4, a receiving net 5 that leaks the processed material processed by the handling cylinder 4 downward, and a sorting unit 6 below the receiving net 5 are configured. That is, the harvested and transported culm is threshed between the handling cylinder 4 and the receiving net 5 while being nipped and conveyed by the threshing feed chain 2. The sorting unit 6 receives a processed product including grains leaked from the receiving net 5 and performs a specific gravity selection while sending the processed product backward, and the processed product sent from the Glen pan 7 and the latter half of the handling chamber 3 An oscillation sorting unit 10 including a chaff sheave 8 that receives a processed material leaking through the receiving net 5 and drops the grain, and a grain sheave 9 that mainly sorts the grain below the chaff sheave 8 and leaks it downward. In addition to the rocking sorting action, the wind sorting action is applied to the processed material falling on the chaff sheave 8 and the grain sieve 9 of the rocking sorting section 10.

  As shown in FIGS. 2 and 3, the handling cylinder 4 is supported by a handling cylinder shaft 15 rotatably provided on a front wall 12 and a rear wall 13 of the handling chamber 3 via a bearing 14. The handling cylinder 4 includes a front support member 16 which is a first support member made of a plate connected to the front end of the handling cylinder shaft 15 and a second plate made of a plate connected to the rear end of the handling cylinder shaft 15. A rear support member 17 which is a support member is provided. A plurality of (three) handling cylinder frames 18 made of round pipe steel or the like are installed across the front support member 16 and the rear support member 17 at a fixed interval of 120 degrees in the rotational circumferential direction of the handling cylinder 4. Has been. Each handling cylinder frame 18 has a posture that protrudes outward in the radial direction of the handling cylinder 4 and has a plurality of rod-like handlings at predetermined intervals along the direction of the axis P of the handling cylinder shaft 15. Teeth 19 are cantilevered to the barrel frame 18. The handle cylinder 4 is driven by the engine power transmitted to the input pulley 20 at the front end of the handle shaft 15.

  The front support member 16 is provided with an end cylindrical bent side 16a on the upper side in the conveying direction of the cereal (forward-facing), and a truncated cone-shaped body 46 that is tapered toward the front is attached thereto. A V-shaped tooth handle 47 is attached to the distal end portion of the peripheral surface 46a, and a plate tooth 48 is attached to the peripheral surface 46a behind it. The V-shaped handle teeth 47 and the plate handle teeth 48 mainly push the tip portion of the corn straw supplied from the grain candy supply port 49 of the handling chamber 3 below the handling cylinder 4, that is, toward the receiving net 5 side. At the same time, it acts to feed to the lower conveyance side.

As shown in FIGS. 2 and 4, inside the ceiling 21 of the handling chamber 3, a dust feed valve 24 that adjusts the feed angle of the workpiece that rotates in the handling chamber 3 by the rotation of the handling cylinder 4 and the processing chamber A straw cutting blade 22 for cutting the straw waste is attached. The blade cutting blades 22 are formed on both pieces 22a, 22a of a plurality (six) of U-shaped members, and the six blade cutting blades 22 are handled so that the respective blades are arranged at substantially equal intervals. It is arranged in parallel from the middle part in the longitudinal direction of the trunk 4 toward the lower side in the grain conveying direction, and is fixed with a bolt (not shown).
By providing the straw cutting blade 22, the grain straws that have been shredded along with the threshing are cut by the straw cutting blade 22, so that the processed material is divided into short pieces and wind sorting is facilitated.

  As shown in FIGS. 2 and 3, the end plate 23 a of the L-shaped member 23 is welded to the front end and the rear end of the handling frame 18 and attached to the front support member 16 and the rear support member 17. A pair of long holes 25 are formed in the piece 23b. The long hole 25 is formed long in the direction along the longitudinal direction of the tooth handling 19.

  Each of the front support member 16 and the rear support member 17 is formed with a pair of circular bolt holes 44 for attaching each handling cylinder frame 18 at a distance corresponding to the pair of long holes 25. By inserting and fixing the bolts 26 into the respective pairs of circular bolt holes 44 and the long holes 25 formed in the mounting piece 23b, the handling cylinder frame 18 to which the tooth handling teeth 19 are attached becomes the front support member 16 and the rear support. It is attached to the member 17.

  In this embodiment, the attachment position of the barrel frame 18 to the front support member 16 and the rear support member 17 is defined by the long hole 25 depending on the length, the lying state, the dry state, the spiked state, etc. By changing within the range, the tip position of the tooth handling 19 is changed in the radial direction of the treatment barrel 4, the mounting state of the tooth treatment 19 is changed so that the tooth treatment 19 has a receding angle θ, The number of teeth 19 can be changed by changing the number of frames 18 attached.

  The bolts 26 that fix the handling cylinder frame 18 to the front support member 16 and the rear support member 17 are loosened, and the handling frame 18 is positioned in the radial direction of the handling cylinder 4 as shown by the two-dot chain line in FIG. By adjusting and fixing the handle cylinder frame 18 again, the tip position of the handle 19 is changed in the radial direction of the handle cylinder 4, and the gap between the inner surface of the receiving net 5 and the tip position of the handle 19 is changed. Thereby, even if the number of teeth 19 is small, the grain of the cereal can be easily threshed.

  Further, when the grain is easy to be shattered, as shown by a two-dot chain line in FIG. 3 may be attached in a state having an arbitrary receding angle θ in the counterclockwise direction (in the counterclockwise direction opposite to the direction of the arrow). When a positive receding angle θ is provided as shown by a two-dot chain line in FIG. 3, when the cereal hits the handle 19 due to the receding angle θ of the handle 19 formed by the receding angle θ, Since it moves so that it may slide to the front-end | tip side of the tooth-handling 19, the hitting force (impact force) with respect to the grain candy by the tooth-handling 19 is relieve | moderated, and the amount of degranulation decreases. On the contrary, the receding angle θ = 0 (state in which the tooth 19 is projected toward the outer side in the radial direction of the case 4 with respect to the case frame 18) or the tooth 19 is attached to the case frame 18. Outward in a state having a predetermined advance angle (−θ) on the lower side in the rotation direction of the barrel (the same clockwise direction as the rotation direction (arrow direction) of the barrel 4 in FIG. 3) with respect to the radial direction of the barrel 4. By projecting toward the side, the smashing force of the tooth handling 19 against the cereals is large, and the cereals are difficult to detach from the tooth handling 19, and the processed material separated from the sandwiched cereals can be easily carried around. It will become easy to degranulate by contact | abutting with the net | network 5, the braid cutting blade 22, etc. FIG.

  The handle 19 has a predetermined receding angle θ on the upper side of the handle barrel rotation direction (counterclockwise in FIG. 3) with respect to the handle frame frame 18 in the radially outward direction of the handle cylinder 4. It is attached so that its position can be changed to an arbitrary position between a position having a predetermined advancing angle (−θ) on the lower side in the rotation direction of the barrel (clockwise in FIG. 3). In order to change the posture of the tooth handling 19 to the posture having the receding angle θ or the advance angle (−θ) with respect to the posture of the tooth handling 19 toward the radially outward direction of the treatment barrel 4, it is inserted into the long hole 25. The bolt 26 is loosened to change the mounting angle of the handling cylinder frame 18.

  As shown in FIG. 3, the front support member 16 and the rear support member 17 each have two pairs of circular bolt holes for attaching the handle frame 18 at a position different from the illustrated handle frame 18. 44a, 44b and 44c are formed. FIG. 3 shows a configuration in which three handling cylinder frames 18 are provided, but the lower two handling cylinder frames 18 are removed while leaving the upper handling cylinder frame 18 shown in the figure, and a pair of right under the illustration is shown. Four handling frames 18 are provided by attaching the handling cylinder frame 18 using the bolt holes 44a and 44b of the two pairs of left and right bolt holes 44b shown right next to the handling hole shaft 15 and the bolt holes 44a. It can be changed to the handling cylinder 4. In this case, the tooth handling 19 has a receding angle θ (advance angle (−θ)) = 0. Further, in addition to the three handling cylinder frames 18 shown in FIG. 3, the bolt holes through which the bolts 26 are inserted and the three pairs of bolt holes formed at positions symmetrical with respect to the axis P By adding three handling cylinder frames 18 using 44a and 44c, the handling cylinder 4 having a total of six handling cylinder frames 18 can be obtained.

  As shown in FIG. 1, the sorting unit 6 includes a first collecting unit 27 that collects grains leaking from the grain sieve 9, and a head cut grain that is sent by the sorting wind on the rear side of the machine body of the first collecting unit 27. And a dust collecting fan 29 that discharges straw scraps and the like to the outside of the machine at the rear end of the machine.

  The first recovery part 27 is provided with a first lateral feed screw 30 disposed along the lateral direction. Connected to the right side of the first collecting section 27 is a first lifting device 31 that receives the first item that has been laterally fed by the most lateral feeding screw 30 and pumps it toward the upper part of a Glen tank (not shown). Has been. The second recovery unit 28 includes a second lateral feed screw 32 disposed along the lateral direction.

  As shown in FIG. 4, on the right side (left side in the figure) of the second collecting part 28, the second thing laterally fed by the second transverse feed screw 32 is received, and the front part of the swing sorting part 10 is received. A second reduction lifting device 33 for reduction is connected. The second reduction lifting device 33 is configured to cover the second lifting case 34, the second lifting screw 35 built in the second lifting case 34, the rotary blade 36 provided at the upper end thereof, and the second rotary blade 36. The discharge port 38 is formed in the outlet case 37 at the upper end of the wind-up case 34.

  A large-diameter blade 39 is attached to a portion facing the connecting portion of the second lateral feed screw 32, and the processed material can be efficiently fed to the second lifting screw 35 by the blade 39. . A configuration similar to this is also provided in the first transverse feed screw 30 at the connection site between the first lifting device 31 and the first recovery unit 27.

  As shown in FIG. 4, the handling chamber 3 is arranged to be biased to the left and right direction left side (right side in the figure) of the threshing machine 1, and the right side partition wall 40 to the receiving net 5 of the side portion of the handling chamber 3. And the upper process space 42 which leads to the selection part 6 is formed between the threshing side wall 41 on the right side. The lower part of the upper processing space 42 communicates with the sorting unit 6 so that the sorting air supplied from the Kara 11 to the sorting unit 6 can flow in.

  The receiving net 5 is formed of a hard synthetic resin having a smooth inner surface on the side of the handling cylinder 4 and having a large number of mesh holes 5a and 5b. As shown in FIG. 5, the mesh holes 5a and 5b are divided into three sections. The mesh hole 5a is large at the front end of the handling chamber 3, and the size of the mesh hole 5b at the middle and rear ends is the mesh at the front end. It is formed smaller than the hole 5a. Further, an intermediate portion of the three divided front and rear mesh holes 5a and 5b is not provided with a bow that protrudes upward (on the side of the barrel 4) from the receiving mesh 5 in the circumferential direction.

[Another embodiment]
(1) In the above embodiment, three handling cylinder frames 18 are provided on the handling cylinder 4. However, the number of handling cylinder frames 18 may be changed to four or six. When the number of the barrels 18 is increased, the interval between the adjacent barrels 18 is narrowed, and the grains go into and out of the interior between the adjacent barrel frames 18 (inside the rotation trajectory of the barrel frame 18). It will be hard to break, so it will be hard to beat the cereal.
When six handling cylinder frames 18 are provided, three handling cylinder frames 18 are attached with the handling teeth 19 projecting radially outward as shown in FIG. 3, and the other three handling cylinder frames 18 are attached. When the barrel 19 is attached with the teeth 19 facing inward (axis P side) and the teeth 19 are to be doubled, the barrel frame 18 with the teeth 19 inward is inverted 180 degrees. The handle 18 may be attached so as to protrude outward.

(2) When four handling cylinder frames 18 are provided, the two handling frames 18 have a receding angle θ on the handling teeth 19, and the treating teeth 19 of the remaining handling cylinder frames 18 have no receding angle θ. Also good. In addition, in the two handling cylinder frames 18 facing each other, the retracting angle θ is set for the teeth 19, the receding angle θ and the advancing angle (−θ) are not set, or the advancing angle (−θ) is set. May be. In the four handling frames 18, the receding angle θ is set for all the teeth 19, the receding angle θ and the advancing angle (−θ) are not set, or the advancing angle (−θ) is set. May be. Thereby, various handling action states can be obtained.
If the teeth 19 of the opposite barrel 18 are set at the same angle, the threshing load also acts symmetrically with respect to the barrel axis P, so that the threshing can be done without causing centering of the barrel load. Therefore, vibration can be suppressed.

(3) As shown in FIG. 3 of the above-described embodiment, if the length of the long hole 25 is increased, a large receding angle θ can be secured, while the inner surface of the receiving net 5 and the tip of the tooth handling 19 Although a large change amount of the gap can be ensured, the length of the long hole 25 may be shortened as shown in FIG. In this case, in the state in which the teeth 19 are inclined to a predetermined receding angle θ, one bolt 26 contacts one end in the longitudinal direction of the long hole 25 and the other bolt 26 is the other end in the longitudinal direction of the long hole 25. Since the position of the tooth handling 19 is determined due to the contact with the side, the gap between the tip of the tooth handling 19 and the receiving net 5 cannot be adjusted. The same applies to the case where the advance angle (−θ) is set for the tooth handling 19.

(4) Although the straw cutting blade 22 is provided in the above embodiment, the straw cutting blade 22 may not be provided.

(5) In the embodiment described above, six handle teeth 19 are provided for one handle cylinder frame 18; however, as shown in FIG. Seven handle teeth 19 may be provided for the handle frame 18. In this case, each U-shaped bracing blade 22 may be disposed so that the tooth 19 passes between the two pieces 22a of each braiding blade 22 as shown in the figure.

(6) The receiving net 5 may be configured such that the mesh holes 5a and 5b are formed by punching holes in a metal plate.

  The present invention can also be applied to a mobile harvester that does not include a stationary threshing machine or a reaping device.

DESCRIPTION OF SYMBOLS 2 Threshing feed chain 4 Handling cylinder 5 Receptacle net 5a Mesh hole 5b Mesh hole 15 Handling cylinder axis | shaft 16 1st support member 17 2nd support member 18 Handling cylinder frame 19 Teeth 21 Ceiling 22 Wara cutting blade 46 A truncated cone shape θ Receding angle -θ Advancing angle

Claims (9)

  In a self-removing threshing machine that threshs between a handling cylinder and a receiving net while sandwiching and conveying cereals with a threshing feed chain, a first support member and a second support provided at both axial ends of the handling cylinder Three or four handling cylinder frames are installed over the members at intervals in the circumferential direction of the handling cylinder, and projecting outward from the handling cylinder frame, and the handling cylinder shaft A self-removing threshing machine characterized in that a plurality of bar-shaped teeth are attached to the barrel frame in a cantilever manner at intervals along the axial direction of the barrel. .   The self-removing type threshing machine according to claim 1, wherein the teeth are protruded outwardly along the radial direction of the handle cylinder on the handle frame.   2. The self-treatment device according to claim 1, wherein the teeth are protruded outward from the treatment frame in a state having a predetermined receding angle on the upper side of the treatment barrel rotation direction with respect to the radial direction of the treatment barrel. Demolding threshing machine.   2. The self-treatment device according to claim 1, wherein the teeth are protruded outward from the treatment frame in a state of having a predetermined advance angle on a lower side in a treatment cylinder rotation direction with respect to a radial direction of the treatment drum. Demolding threshing machine.   A posture having a predetermined receding angle on the upper side in the rotation direction of the barrel and a predetermined advance on the lower side in the rotation direction of the barrel relative to the posture toward the outer side in the radial direction of the barrel on the barrel frame. 2. The self-removing threshing machine according to claim 1, wherein the threshing machine is attached to an arbitrary posture between a posture having a corner and capable of changing its position.   The self-removing threshing machine according to any one of claims 1 to 5, wherein a straw cutting blade for cutting a processed product is attached to a handling chamber that houses the handling cylinder.   The self-removing type threshing machine according to claim 6, wherein a plurality of the straw cutting blades are juxtaposed in the handling chamber from the middle part in the longitudinal direction of the handling cylinder toward the lower side in the grain conveying direction.   The said handling cylinder WHEREIN: On the said 1st support member side provided in the grain cocoon conveyance direction upper side, the tapered cone shaped conical body toward the conveyance direction upper side is formed. The self-removal type threshing machine as described in any one of Claims.   The self-removing threshing machine according to any one of claims 1 to 8, wherein the receiving net is configured by a plate-like body having a smooth inner surface on the handling cylinder side and formed with a number of mesh holes.

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