JPH08242677A - Grain discharge apparatus for combine harvester - Google Patents

Abstract

PURPOSE: To surely carry discharged grains and simplify the constitution of the apparatus. CONSTITUTION: A grain-lifting mechanism 19 for lifting grains in a grain tank is provided. A fixed cylinder 21 is attached to the upper part of the grain-lifting mechanism. A movable cylinder 22 is stretchably superposed to the fixed cylinder 21. A fixed spiral wing 24 fixed onto the outer periphery of a hollow shaft 30 is provided in the fixed cylinder 21. A rotating sliding shaft 37 for slidably fitting to the interior of the hollow shaft 30 and integrally rotating therewith is provided in the movable cylinder 22. Plural spiral wing pieces 36 each provided with spiral wing body 47 are slidably fitted to the rotating sliding shaft 37. The interval between the spiral wing pieces 36 is changeably constituted correspondingly to expansion and contraction of the movable cylinder 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine grain discharging apparatus.

[0002]

2. Description of the Related Art In Japanese Patent Laid-Open No. 63-279719, which has been publicly known, a mowing portion provided in front of a traveling device, a threshing device provided above the traveling device, and a side portion of the threshing device are disclosed. The provided Glen tank, the fried mechanism for fried the grains in the Glen tank, the fixed cylinder with the base attached to the upper part of the fried mechanism, and the movable cylinder that is stretchably polymerized with respect to the fixed cylinder. In a combine having a discharge auger consisting of, a fixed spiral blade fixed to the outer peripheral surface of a hollow hollow shaft is provided in the fixed cylinder, and the movable cylinder can be freely moved in and out by screwing the hollow shaft inside. There is described a combine grain disposing device provided with a retractable spiral blade constituted by a rotary sliding shaft that integrally rotates with a hollow shaft, and a ribbon conveyor that has a free end on the base side with the tip of the rotary sliding shaft fixed. Has been done.

[0003]

The above-mentioned known example has a problem in the expandable spiral blade provided in the movable cylinder. That is, since it is a ribbon conveyor, there is a problem in the carrying force. There is a problem that the base side overlaps with the fixed spiral blade and may be clogged. Further, since the base portion of the ribbon conveyor is a free end, there is a problem that centrifugal force due to rotation acts and contacts the inner peripheral surface of the moving cylinder. That is, in the drawings of the publicly known publication, a ribbon conveyor having a considerably large diameter is shown, but such a large diameter conveyor always comes into contact, and if the diameter is made smaller, a problem remains in the carrying force.

[0004]

OBJECT OF THE INVENTION Securing of conveying force, prevention of clogging and prevention of damage.

[0005]

Therefore, according to the present invention, the reaper 4 provided in front of the traveling device 2, the threshing device 3 provided above the traveling device 2, and the side portion of the threshing device 3 are provided. , A grain tank provided in the grain tank, a fried mechanism 19 for fried the grains in the grain tank, a fixed cylinder 21 having a base attached to the upper part of the fried mechanism 19, and a retractable container with respect to the fixed cylinder 21. In the combine having the discharge auger 20 composed of the polymerized moving cylinder 22, the hollow shaft 3 which is hollow in the fixed cylinder 21.
Fixed spiral blades 24 fixed to the outer peripheral surface of No. 0, and a rotary sliding shaft 37 that is integrally slidably fitted in the hollow shaft 30 inside the moving cylinder 22 and the rotary sliding shaft. The shaft 37 is slidably fitted into the shaft 37 and integrally rotated to form a spiral blade 47 on the outer periphery.
An expandable spiral blade 35 configured by a plurality of spiral blade pieces 36 provided with is provided, and each spiral blade piece 36 is configured so that the interval thereof can be freely changed corresponding to expansion and contraction of the moving cylinder 22. It is what Therefore,
In the present invention, one end of the spiral blade piece 36 is slidably engaged with the spiral blade piece 36 on the upper side in the grain conveying direction and the other end is slidably engaged with the spiral blade piece 36 on the lower side in the grain conveying direction. As a result, the adjacent spiral blade pieces 36 are moved in the axial direction and are moved, and the spiral blade pieces 3 are
Of the six, the cutting edge spiral blade piece 36X on the discharge port 48 side of the discharge auger 20 is a combine grain discharging device configured to rotate integrally with the rotary sliding shaft 37 but not move in the axial direction. Is.

[0006]

Embodiments of the present invention will be described with reference to the drawings.
Is a machine frame, 2 is a traveling device provided at a lower position of the machine frame 1, 3 is a threshing device provided above the machine frame 1, and 4 is a front position of the machine frame 1. The reaping unit provided, 5 is the weeding body of the reaping unit 4, 6 is a take-up reel, 7 is a cutting blade, 8 is an auger for focusing the cut grain culms, and 9 is a transport elevator provided at the rear of the reaping unit 4. Is. A threshing chamber 10 is formed in the upper part of the threshing device 3. Reference numeral 11 denotes a handling cylinder axially mounted in the threshing chamber 10, 12 a handling net which mainly surrounds the lower side of the handling barrel 11, 13 a wind selecting chamber formed below the threshing chamber 10, and 14 a wind selecting chamber 13 An oscillating sorting device provided therein, 15 is a blower fan that blows air to the air selection chamber 13, 16 is a first conveyor, and 17 is a second conveyor.
On the side of the threshing device 3, a grain tank 18 for temporarily storing the grains taken out by the first conveyor 16 is provided. A discharge device (not shown) for discharging the grains in the tank 18 is provided in the Glen tank 18, and a lower part of a fried mechanism 19 for lifting the grains in the tank 18 is attached to the discharge device. A base of a discharge auger 20 for discharging the fried grain is attached to the upper part of the fried mechanism 19. Discharge auger 20
The vertical axis of the discharge auger 20 is rotatable about the axis of the fried grain mechanism 19 by a turning mechanism (not shown) such as a cylinder, and a vertically moving mechanism such as an auger vertical cylinder (not shown). It is attached to the grain-lifting mechanism 19 movably up and down by (omitted).

Thus, the discharge auger 20 is divided into a fixed cylinder 21 on the base side and a movable cylinder 22 on the front end side, and the base side of the movable cylinder 22 is fitted to the outer periphery of the front end of the fixed cylinder 21. The movable cylinder 22 is configured to be movable in the transport direction with respect to the fixed cylinder 21, and is formed so that the entire length of the discharge auger 20 can be expanded and contracted. Therefore, the fixed spiral blade 24 that does not expand and contract is provided in the fixed cylinder 21 that does not expand and contract. A bearing 26 is provided in an upper metal 25 to which the base of the fixed cylinder 21 is attached, and a different diameter portion (square shaft) 28 of a rotary transmission shaft 27 mounted on the bearing 26.
The boss 29 is fitted and fixed to the boss 29, the base of the hollow shaft 30 is fixed to the boss 29, and the tubular member 31 is fixed to the tip of the hollow shaft 30,
The tubular member 31 is rotatably attached to a bearing 32 provided at the tip of the fixed barrel 21, and the fixed spiral blade 24 is attached to the outer periphery of the hollow shaft 30.
Install. In the movable cylinder 22 fitted around the outer periphery of the fixed cylinder 21, expandable spiral blades 35 that can expand and contract in length according to the expansion and contraction of the movable cylinder 22 are provided. The expandable spiral blade 35 is provided with a plurality of spiral blade pieces 36 slidably provided on the rotary sliding shaft 37, and the distance between the spiral blade pieces 36 is changed by expanding and contracting the moving cylinder 22. A pair of grooves 38 are formed on the outer peripheral edge of the engaging plate 39, and a fitting hole 40 into which the polygonal rotary sliding shaft 37 is fitted is formed at the center of the engaging plate 39. One end of a hollow small diameter collar 41 is fixed to the engagement plate 39, and the other end of the small diameter collar 41 is fixed to a boss 43 having a fitting hole 42 similar to the fitting hole 40. A large-diameter collar 44 having a diameter larger than that of the small-diameter collar 41 is fixed to the boss 43, and the other end of the large-diameter collar 44 is opened to form an opening 45. A pair of engaging bodies (pins) 46 projecting from each other are provided, and a spiral blade body 47 is provided on the outer circumference of the large-diameter collar 44. The engagement plate 39, the small diameter collar 41, the boss 43, and the large diameter collar 44 constitute the spiral blade piece 36.

In each spiral blade piece 36, the fitting hole 40 of the engaging plate 39 and the fitting hole 42 of the boss 43 are inserted into the rotary sliding shaft 37, and the engaging plate 39 has a large-diameter collar of the adjacent spiral blade piece 36. When the spiral blade piece 36 is inserted into the shaft 44, the engagement plate 39 is engaged with the engagement body 46. That is, to show an example of assembly, the tip of the rotary sliding shaft 37 is positioned in the large-diameter collar 44a of the spiral blade piece 36a on the fixed cylinder 21 side (for the sake of convenience, the reference numeral is a havette). The groove 38b of the engaging plate 39b of the spiral blade piece 36b on the lower side in the conveying direction of the spiral blade piece 36a is aligned with the engaging body 46a, and the engaging plate 39b is inserted into the large-diameter collar 44a to rotate the engaging plate 39b. Before fitting into 37, the spiral blade piece 36b is rotated so that the groove 38b is displaced with respect to the engaging body 46a, and in this state, the fitting hole 40b of the engaging plate 39b and the fitting hole 42b of the boss 43b are slidably rotated. Insert into shaft 37 and repeat for each spiral blade piece 36
Is attached to the rotary sliding shaft 37. Then, as described above, each spiral blade piece 36 responds to the expansion and contraction of the moving cylinder 22 by sliding on the rotary sliding shaft 37 and changing the interval thereof, but the discharge port 48 of the discharge auger 20. The uppermost spiral blade piece 36X on the side rotates integrally with the rotary sliding shaft 37, but is fixed to the rotary sliding shaft 37 so as not to move in the axial direction (if it does not move in the axial direction, Well, regardless of the configuration, it may be attached to the bearing 50 provided at the tip of the moving barrel 22). That is, the leading edge of the spiral blade piece 36X is expanded and contracted together with the movable cylinder 22 to change the interval between the spiral blade pieces 36 on the upstream side in the transport direction. However, of the spiral blade pieces 36, the spiral blade piece 36Y closest to the fixed cylinder 21 rotates integrally with the cylinder member 31 so that the spiral blade piece 36Y is not pulled by the spiral blade piece 36 on the lower side in the transport direction. Mount so that it does not move in the direction. Therefore, the spiral wing piece 36Y includes the spiral wing body 47.
It is only necessary to attach the large-diameter collar 44 with the large-diameter collar 44 to the rotary sliding shaft 37. The boss 43 on the discharge port 48 side of the large-diameter collar 44 is inserted into the rotary sliding shaft 37 so that the large-diameter collar 44 has the fixed cylinder 21 side. The boss 43 is fitted on the outer circumference of the tubular member 31 and is fixed by bolts.

The base of the rotary sliding shaft 37 is slidably fitted in the tubular member 31, and the tip of the rotary sliding shaft 37 is only rotatable in a bearing 50 provided at the tip of the moving barrel 22. Install on. Therefore, the rotary sliding shaft 37 is rotated by the rotating tubular member 31 and expands and contracts due to the expansion and contraction of the tip of the moving barrel 22, and when the moving barrel 22 contracts, the base of the rotary sliding shaft 37 is housed in the hollow shaft 30. It The rotary sliding shaft 37 is
A prismatic shape (including a spline shaft) may be used, but in the embodiment, a hexagonal shape is formed, and a plurality of divided pieces are fixed to form a uniaxial shape, and a grease reservoir 52 for accumulating grease 51 in the divided portion is formed. Form. FIG. 10 and FIG. 11 are for preventing grains from entering between the moving cylinder 22 and the fixed cylinder 21. The cylinder member 54 is fixed to the mounting member 53 for mounting the bearing 32, and A seal member 55 such as an O-ring is attached. Further, a seal member 56 is provided in the opening 45 of the large-diameter collar 44 of the spiral blade piece 36 to prevent the entry of the grain into the large-diameter collar 44 (FIG. 13).

Of the spiral blade piece 36 constituting the expandable spiral blade 35, the spiral blade body 47 in the middle portion may be formed to have a small diameter (FIG. 14). The fixed barrel 21 and the movable barrel 22 are configured so that when the movable barrel 22 is maximally extended, the movable barrel 22 overlaps about 1/3 of the length of the fixed barrel 21. Then, the expansion and contraction of the moving cylinder 22 is
The expansion / contraction motor 58 is used. Motor 58 for expansion and contraction
Is fixed to a motor mounting plate 59 fixed to the upper metal 25, a base of a supporting member 60 parallel to the discharge auger 20 is fixed to the motor mounting plate 59, and a bearing member 61 is provided at the tip of the supporting member 60. The tip of a rotary screw shaft 62 that is rotated by the expansion / contraction motor 58 is rotatably attached to the bearing member 61. A screw hole of a moving body 63 is screwed into the rotary screw shaft 62 to fix the moving body 63 to the moving barrel 22 side. Therefore, the rotation of the rotary screw shaft 62 causes the moving body 6 to move.
3 moves to expand and contract the moving cylinder 22. The rotary screw shaft 62 and the moving body 63 may be formed by a projection 65 that engages with the spiral groove 64 as long as the moving body 63 moves. A guide roller 67 having a fitting groove 66 is provided on the bearing member 61, and the guide roller 67 engages the fitting groove 66 with a guide ridge 68 provided on the outer periphery of the movable barrel 22.

In the embodiment shown in FIGS. 20 and 21, the moving barrel 22 is used.
Attach two or more guide rollers 70 on the outer periphery of the base side of
One guide roller 70 is brought into contact with the outer periphery of the fixed cylinder 21, and the other guide roller 70 forms a fitting groove 66 like the guide roller 67 and is engaged with the ridge, or the fixed cylinder 21. It is located between the two ridges 71 provided on the outer periphery of the. In the embodiment, since the three guide rollers 70 are provided, the upper two guide rollers 70 are arranged at equal intervals with respect to the lower guide roller 70. However, when two guide rollers 70 are provided, they are provided so as to face each other. Good. Further, each guide roller 70 may be elastically attached to the outer circumference of the fixed cylinder 21 by a spring or the like. In the embodiment of FIGS. 22 and 23, a detection device 72 for detecting the moving body 63 is provided at the start end and the end of the support member 60. Although the detection device 72 is provided on the mounting plate 73, the mounting plate 73 is projected within a range where it does not interfere with the detection portion 74 of the detection device 72, and a function of a stopper is also expected. Reference numeral 75 is a storage support device for the discharge auger 20.

[0012]

[Operation] Next, the operation will be described. When the storage support device 75 travels while supporting the middle part of the moving cylinder 22 of the discharge auger 20 in a contracted state and arrives at the field, the machine body is advanced, the grass body 5 is weeded, and the take-up reel 6 is used to cultivate the grain culm. Scrape the cutting blade 7
Slides to mow grain culms, supplies grain culms to the threshing device 3, threshes in the threshing device 3, performs mowing threshing work, and when a certain amount of grain is threshed in the grain tank 18, Move to a light truck waiting near the field. Next, the discharge auger 20 is moved up by the auger up / down cylinder, and then the fixed cylinder 2 is centered around the grain-lifting mechanism 19 by the rotating cylinder.
When the mounting portion of No. 1 is rotated, the discharge port 48 of the movable barrel 22 is located at an arbitrary position. Next, when the expansion / contraction switch is operated to energize the expansion / contraction motor 58, the rotary screw shaft 62 rotates, the moving body 63 moves due to the rotation of the rotary screw shaft 62, and the movable cylinder 22 extends with respect to the fixed cylinder 21. Then, the discharge port 32 of the movable cylinder 22 is located at the position above the tank of the light truck.

In this state, when the lifting mechanism 19 and the discharge auger 20 are operated, the lifting mechanism 19 causes the grain tank 1 to move.
Fry the grains in 8. The rotation of the grain-lifting mechanism 19 causes the rotation transmission shaft 27 in the upper metal 25 to rotate via a bevel gear or the like, the different diameter portion 28 of the rotation transmission shaft 27 rotates the boss 29, and the boss 29 is a hollow fixed to the boss 29. The shaft 30 is rotated, and the hollow shaft 30 rotates the fixed spiral blade 24 to convey the grain. Then, the cylindrical member 3 is rotated by the rotation of the hollow shaft 30.
1 rotates, and the rotary sliding shaft 37, which is slidably fitted in the tubular member 31, rotates, and the rotary sliding shaft 37 engages the engaging plate 39 and the boss of each spiral blade piece 36 of the expandable spiral blade 35. 43
The boss 43 rotates the large-diameter collar 44 to rotate the spiral wing body 47, and the spiral wing body 47 of each spiral wing piece 36 rotates to cause the expandable spiral wing 35 to function and convey the grain. To do.

In this case, the spiral blade piece 36 is rotatable but slidable with respect to the rotary sliding shaft 37, and the discharge auger 2
The leading edge of the spiral blade piece 36X on the discharge port 48 side of No. 0 is fixed to the rotary sliding shaft 37 so that it can be rotated only and is fixed in position.
6X moves, the movement of the spiral blade piece 36X moves the engagement plate 39 in the large diameter collar 44, and when the engagement plate 39 engages with the engagement body 46 of the next spiral blade piece 36, the engagement body 46 is moved. By moving the spiral blade pieces 36 by pulling and moving them, the interval between the spiral blade pieces 36 becomes wider, which corresponds to the extension of the moving cylinder 22. Then, when the movable cylinder 22 extends, each spiral blade piece 36 is pulled by the spiral blade piece 36 on the lower side in the transport direction, but the spiral blade piece 36 in the portion closest to the fixed cylinder 21 moves to the lower side in the next transport direction. Since it is configured as an independent spiral blade piece 36Y that is not pulled by the spiral blade piece 36 of
The interval between the end of the fixed spiral blade 24 of No. 1 and the independent spiral blade piece 36Y is always constant, and the grains are reliably conveyed even if there is conveyance resistance due to the presence of bearings or the like, and the fixed cylinder 21 moves to the moving cylinder. Good transfer of grain transfer to 22.

Further, each spiral blade piece 36 is only pulled by the spiral blade piece 36 on the lower side in the carrying direction to widen the gap, but the discharge auger 20 is higher on the discharge port 48 side than the upper metal 25. The spiral blade pieces 36 are sequentially spaced from the discharge port 48 and are not biased toward the discharge port 48 side. Further, the interval between the spiral blade pieces 36 is set so that the spiral blade bodies 47 of the spiral blade pieces 36 can convey the grains even when the movable cylinder 22 is extended to the maximum extent. Since the interval between the spiral blade pieces 36 is set by the length of the fitting hole 42 of the spiral blade piece 36, the length of each fitting hole 42 is shortened.
If the number of is increased, the spacing between the spiral blades 47 does not become wide. Then, when the inside of the Glen tank 18 is emptied after the above work is completed, an intermediate portion of the moving cylinder 22 of the discharge auger 20 is supported and stored by the storage support device 75 to prepare for the next threshing work. When the cylinder 22 shrinks, the engagement plate 39 moves in the large-diameter collar 44 and contacts the boss 43,
Next, the boss 43 is pushed to shorten the interval between the spiral blade pieces 36 in accordance with the reduction of the moving cylinder 22.

When the discharge auger 20 is stored and the mowing work grain discharging work is completed, the mowing threshing work and the discharging work are repeated as described above. Then, the rotary sliding shaft 37 is formed in a prismatic shape, divided from the middle portion, and the grease reservoir 52 for storing the grease 51 is formed in the divided portion. Therefore, the rotary sliding shaft 37 and the engaging plate 39 are formed. Mating hole 4
0 and the sliding portion of the fitting hole 42 of the boss 43 slide smoothly. The outer circumference of the rotary sliding shaft 37 is surrounded by the small-diameter collar 41 and the large-diameter collar 44 of each spiral blade piece 36, and the engaging plate 39 is located in the large-diameter collar 44, so that it moves within the discharge auger 20. Since the grains to be used are not contaminated by the grease 51 and the outer circumference of the rotary sliding shaft 37 is surrounded, the grease 51 cannot be additionally replenished after the grease 51 is filled in the grease reservoir 52 before assembly. Also in this respect, the presence of the grease reservoir 52 contributes to smooth movement of the spiral blade pieces 36.

Therefore, the bearing 32 is attached to the tip of the fixed cylinder 21 by the attachment member 53, and the attachment member 53 is attached to the tubular member 54.
Is integrally formed, and a sealing member 55 such as an O-ring is attached to the tubular member 54. Therefore, it is possible to prevent the grain from entering between the overlapping portions of the fixed barrel 21 and the moving barrel 22 and to move the moving barrel 22.
Smoothly and securely (Figs. 10 and 11). Further, since the seal member 56 is provided in the opening portion 45 of the large-diameter collar 44 of the spiral blade piece 36, the grain is prevented from entering the large-diameter collar 44, and the engagement plate 3 in the large-diameter collar 44 is prevented.
9 and the small-diameter collar 41 are smoothly and surely moved to ensure expansion and contraction of the expandable spiral blade 35 (FIG. 13). Then, before the grain is sent into the discharge auger 20, the expandable spiral blade 35 may be operated on a trial basis, and in such a case, the amplitude of the front and rear central portions of the expandable spiral blade 35 becomes large. However, among the spiral blade pieces 36 forming the expandable spiral blade 35, the spiral blade body 47 in the middle portion is formed to have a small diameter, and therefore, even if the amplitude increases, the spiral blade body 47 contacts the inner circumference of the moving cylinder 22. And the movable cylinder 22 and the expandable spiral blade 3 are prevented.
5 to prevent damage (FIG. 14). In addition, when making the diameter of the spiral blade 47 small, the carrying force is taken into consideration.

Further, the relationship between the fixed cylinder 21 and the movable cylinder 22 is such that when the movable cylinder 22 is maximally extended, the movable cylinder 22 overlaps about 1/3 of the length of the fixed cylinder 21. Since it is configured, when the movable barrel 22 is extended,
Does not incline, does not become heavy, is securely supported by the fixed cylinder 21, and expands and contracts smoothly. Further, in the contracted state, the fixed barrel 21 overlaps with the movable barrel 22, so that the joint can be seen smoothly because there is no bolt or metal. Then, the expansion and contraction of the moving cylinder 22 is performed by the expansion and contraction motor 58.
The expansion / contraction motor 58 is attached to the motor mounting plate 59 fixed to the upper metal 25 on the upper part of the grain-lifting mechanism 19, so that the expansion / contraction amount of the moving cylinder 22 can be increased. Moreover, the overlapping portion of the fixed barrel 21 and the movable barrel 22 can be increased, the sagging of the movable barrel 22 is prevented, and the load on the telescopic motor 58 is reduced. Further, since the expansion / contraction motor 58 is not provided in the fixed cylinder 21 or the movable cylinder 22, the discharge auger 20 can be lightened,
Expansion and contraction, turning, etc. can be performed reliably, and the support structure is simple and can be firmly supported.

A bearing member 61 for supporting the tip of a rotary screw shaft 62 rotated by a motor 58 for expansion and contraction is provided on a support member 60 of a drive mechanism for expanding and contracting the movable barrel 22.
A guide roller 67 having a fitting groove 66 is provided on the bearing member 61, and the guide roller 67 moves the fitting groove 66 in the moving cylinder 22.
Since it is engaged with the guide ridges 68 provided on the outer periphery of the guide, the movable body 63 can be supported at two points, that is, the portion screwed with the rotary screw shaft 62 and the guide roller 67 and the guide ridge 68. , Reliably guide the expansion and contraction of the moving barrel 22. Further, when two or more guide rollers 70 are attached to the outer periphery of the moving barrel 22 on the base side, the moving barrel 22 can be more surely expanded and contracted (FIG. 20,
21). In addition, the detection device 7 that detects the movement of the moving body 63
Since 2 is provided, the expansion and contraction of the moving cylinder 22 is surely stopped. In this case, the detection device 72 is provided on the mounting plate 73, and the mounting plate 73 is projected in a range that does not interfere with the detection portion 74 of the detection device 72. Therefore, even if the detection device 72 does not operate due to a failure or the like, The movement of the moving body 63 is stopped by the mounting plate 73, and the mounting plate 73 also acts as a stopper, so that not only the expansion and contraction drive mechanism but also the entire discharge auger 20 can be prevented from being damaged.

[0020]

[Effects] The present invention provides the cutting unit 4 provided in front of the traveling device 2.
And a threshing device 3 provided above the traveling device 2,
A grain tank provided on the side of the threshing device 3, a fried grain mechanism 19 for shelling grains in the grain tank, a fixed cylinder 21 having a base attached to the upper portion of the fried grain mechanism 19, and the fixed cylinder. 21
In the combine having the discharge auger 20 composed of the movable cylinder 22 which is stretchably overlapped with respect to the fixed cylinder 2
A fixed spiral blade 24 fixed to the outer peripheral surface of a hollow hollow shaft 30 is provided in the rotary shaft 1. Axis 37
And a plurality of spiral blade pieces 3 in which the rotary sliding shaft 37 is slidably fitted only and integrally rotated to provide a spiral blade body 47 on the outer circumference.
6 is an expandable spiral blade 35 and each spiral blade piece 36 is a combine grain discharging device configured so that the interval between the spiral blade pieces 36 can be freely changed in accordance with expansion and contraction of the moving cylinder 22. Since the expandable spiral blade 35 is configured by the plurality of spiral blade pieces 36 provided with the body 47, the grain can be reliably transported, and the spiral blade piece 36 is fixed to the fixed spiral blade 24.
Since it does not polymerize with, it is possible to prevent the grain from being clogged, and since the spiral blade piece 36 is fitted to the rotary sliding shaft 37,
There is an effect that it is possible to prevent contact with the inner peripheral surface of the moving barrel 22. Further, the present invention provides the spiral blade piece 36.
Has one end on the spiral blade piece 36 on the upper side in the grain conveying direction,
The other end is slidably engaged with each of the spiral blade pieces 36 on the lower side in the grain conveying direction, so that the adjacent spiral blade pieces 36 move in the axial direction and move together. Of the 36, the most advanced spiral blade piece 36X on the discharge port 48 side of the discharge auger 20 is a combine grain discharging device configured to rotate integrally with the rotary sliding shaft 37 but not move in the axial direction. Therefore, when the movable cylinder 22 is expanded / contracted, the spiral blade pieces 36 change the interval to expand / contract the expandable / contractible spiral blade 35, and the spiral blade 35 can be expanded / contracted with a simple configuration.

[Brief description of drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a side view of the discharge auger.

FIG. 3 is a sectional view of the same.

FIG. 4 is a perspective view showing an assembled state of the spiral blade piece.

FIG. 5 is a cross-sectional view of a spiral blade piece.

FIG. 6 is a sectional view showing an example of the assembled state.

FIG. 7 is a sectional view of the same expanded state.

FIG. 8 is a second embodiment of a rotary sliding shaft.

FIG. 9 is a sectional view of the same.

FIG. 10 is a sectional view of a state in which a seal member is provided.

FIG. 11 is an enlarged view of the same.

FIG. 12 is a sectional view showing a state in which a seal member is provided.

FIG. 13 is a perspective view of the same.

FIG. 14 is a diagram of another embodiment of the expandable spiral blade.

FIG. 15 is a side view showing the relationship between the fixed barrel and the movable barrel.

FIG. 16 is a side view of the extension mechanism.

FIG. 17 is a cross-sectional view of a moving body.

FIG. 18 is a side view of the guide device of the expansion / contraction mechanism.

FIG. 19 is a rear view of the same.

FIG. 20 is a diagram of the second embodiment.

FIG. 21 is a sectional view of the same.

FIG. 22 is a side view of the detection device.

FIG. 23 is an enlarged view of the same.

[Explanation of symbols]

1 ... Airframe frame, 2 ... Traveling device, 3 ... Threshing device, 4 ...
Mowing part, 5 ... Grass body, 6 ... Take-in reel, 7 ... Cutting blade, 8 ...
Auger, 9 ... Conveyor elevator, 10 ... Threshing chamber, 11 ... Handling cylinder, 12 ... Handling net, 13 ... Wind selection chamber, 14 ... Oscillating sorting device,
15 ... Blower fan, 16 ... No. 1 conveyor, 17 ... No. 2 conveyor, 18 ... Glen tank, 19 ... Lifting mechanism, 20 ...
Discharge auger, 21 ... Fixed cylinder, 22 ... Moving cylinder, 24 ... Fixed spiral blade, 25 ... Upper metal, 26 ... Bearing, 27 ... Rotation transmission shaft, 28 ... Different diameter portion, 29 ... Boss, 30 ... Hollow shaft, 31
... Cylindrical member, 32 ... Bearing, 35 ... Telescopic spiral blade, 36 ... Spiral blade piece, 37 ... Rotating sliding shaft, 38 ... Groove, 39 ... Engaging plate, 40 ... Fitting hole, 41 ... Small diameter collar, 42 ... Fitting Pagoda,
43 ... Boss, 44 ... Large-diameter collar, 45 ... Opening, 46 ...
Engagement body, 47 ... Spiral wing body, 48 ... Discharge port, 50 ... Bearing,
51 ... Grease, 52 ... Grease reservoir, 53 ... Mounting member, 54
... Cylinder member, 55 ... Seal member, 56 ... Seal member, 58
... motor for expansion / contraction, 59 ... motor mounting plate, 60 ... support member, 61 ... bearing member, 62 ... rotary screw shaft, 63 ... moving body, 64 ... spiral groove, 65 ... protrusion, 66 ... fitting groove, 67 ...
Guide roller, 68 ... Guide ridge, 70 ... Guide roller,
71 ... Ridge, 72 ... Detection device, 73 ... Mounting plate, 74 ... Detection part, 75 ... Storage support device.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 2, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 5]

[Figure 8]

[Figure 9]

[Figure 3]

[Figure 4]

[Figure 6]

[Figure 7]

FIG. 11

FIG. 19

[Figure 10]

[Fig. 12]

[Fig. 13]

FIG. 14

FIG. 16

FIG. 15

FIG. 17

FIG. 18

FIG. 20

FIG. 21

FIG. 22

FIG. 23

Claims (2)

[Claims] 1. A mowing unit 4 provided in front of the traveling device 2,
A threshing device 3 provided above the traveling device 2, a grain tank provided on the side of the threshing device 3, a grain lifting mechanism 19 for shelling grains in the grain tank, and the grain lifting mechanism. 19
In a combine having a discharge auger 20 consisting of a fixed cylinder 21 having a base attached to the upper part of the fixed cylinder 21 and a movable cylinder 22 which is stretchably overlapped with the fixed cylinder 21, a hollow hollow shaft 30 of a hollow shaft 30 is provided in the fixed cylinder 21. Fixed spiral blade 2 fixed to the outer peripheral surface
4, a rotary sliding shaft 37 that is fitted in the hollow shaft 30 so that it can be slid only and rotates integrally with the inside of the moving cylinder 22;
The expandable spiral blades 35 are formed by a plurality of spiral blade pieces 36 having a spiral blade body 47 provided on the outer periphery of the rotary sliding shaft 37 so that they are slidably fitted together and integrally rotated. Reference numeral 36 denotes a combine grain discharging device configured so that the interval thereof can be freely changed in accordance with expansion and contraction of the moving cylinder 22. 2. The spiral blade piece 3 according to claim 1.
6 is a spiral blade piece 36 having one end on the upper side in the grain conveying direction.
, The other end to the spiral blade piece 36 on the lower side in the grain conveying direction,
Each of the spiral blade pieces 36 is slidably engaged with each other so that the adjacent spiral blade pieces 36 move in the axial direction and move, and the most distal end of the spiral blade pieces 36 on the discharge port 48 side of the discharge auger 20 is arranged. The spiral blade piece 36X is a combine grain discharging device configured so as to rotate integrally with the rotary sliding shaft 37 but not move in the axial direction.