JP3069260B2 - Combine threshing waste straw treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a waste straw shredding device for cutting threshing waste straw in the direction of the culm body in a posture in which the culm falls sideways along the lateral direction of the machine body and dropping and discharging the shredded straw. Threshing and waste straw treatment equipment for combine harvesters.

[0002]

2. Description of the Related Art The above-mentioned threshing and discharging straw processing apparatus, for example, disclosed in Japanese Patent Application No. 6-133505 has been previously proposed. That is, a spiral screw is provided rotatably around the axis in the lateral direction of the machine body in the straw discharge path of the exhaust straw shredding device, and a mechanism for switching the drive rotational direction of the spiral screw is provided, and the switching mechanism is operated. Then, the spiral screw is a diffusion guide form in which both the spiral body on one end side and the spiral body on the other end side rotate in the direction of spirally feeding from the center of the spiral screw toward the end side,
The helical body on both sides is switched to a shift guide mode in which the helical body is rotated in the direction of helical feeding from the end side of the helical screw toward the center. And, when the spiral screw is in the approaching guide form, by guiding the shredder where each spiral body falls so as to fly inward toward the inside in the lateral direction of the body of the straw discharge path, the shredder of the field has a fallen straw area. The width of the fuselage in the lateral direction became relatively narrow, and a relatively large amount of chopped straw fell in the center of the fall area. When the helical screw is in the diffusion guide form, each spiral body is released and guided so that the shredder that falls is directed toward the outside in the horizontal direction of the body of the straw discharge path, so that the side of the airplane in the shredder fall area of the field is dropped. As the width in the direction became relatively wide, the shredded straw fell relatively dispersed over the entire width of the falling area. In other words, the shredded straw is released in a narrow fall area so that it can be easily collected or incinerated later, or dispersed over a wide fall area so that it can be embedded evenly over the entire field. To perform diffused emission.

[0003]

In the case of the previously-discussed waste stirrer, the structure of the screw drive mechanism becomes complicated because of the mechanism for switching the drive rotation direction of the spiral screw, and the entire apparatus is reduced in terms of the drive system. Had to be large or expensive to produce. SUMMARY OF THE INVENTION An object of the present invention is to make it possible to release and spread a shredded straw, and to provide a simple structure.

[0004]

According to the present invention, in order to achieve the object, in the threshing and discharging straw processing apparatus for combine harvesters described at the beginning, the straw discharging path is dropped on the straw discharging path of the discharging straw shredding apparatus. A helical screw that makes contact with the shredder to perform release guidance is rotatably driven around the axis of the machine in the lateral direction, and the helical screw is a pair of divided screw parts obtained by dividing the helical screw, and a connecting portion for each divided screw part is rotatably connected to separate it into the screw drive shaft, split the pair
Screw part is one end side and the other end of the screw drive shaft
Side, the one end portion of the helical screw rotates in the direction of helical feeding from the center of the helical screw toward one end side, and the other end portion of the helical screw is screwed into the helical screw. A diffusion guide form that rotates in the direction of spiral feeding from the center to the other end, and a direction in which one end of the spiral screw spirals from one end of the screw toward the center. and, the other end portion of said helical screw configured to switch said helical screw and asked guiding mode which rotates in the direction of helical feed toward the center portion from the other end of said helical screw, said screw This is the drive shaft
A first divided drive shaft portion and a second divided drive shaft portion
Wherein the first split drive shaft portion is the second split drive shaft
Drives to the shredder body at the end opposite to the part so that it can rotate freely
And the second divided drive shaft portion is supported by the first
At the end opposite to the split drive shaft part, it is turned to the shredding machine body.
The first part is supported so as to be movable and swingable.
A screw that is coaxially and rotatably connected to the split drive shaft
From the first drive shaft portion
It is configured to be freely switchable to a screw attaching / detaching posture .

[0005]

For example, if one of the split screw portions is replaced from the left side to the right side of the screw drive shaft and the other is replaced from the right side to the left side of the screw drive shaft, the drive rotation direction of the screw drive shaft does not need to be changed. From the state in which each of the pair of split screw portions rotates in the direction of spiral feeding from the end side of the spiral screw toward the central portion, rotates in the direction of spiral feeding from the central portion of the spiral screw toward the end side. The state is switched to sand
In other words, the helical screw switches to the diffusion guide mode or the shift guide mode while the driving rotation direction of the screw drive shaft remains the same. Then, when the helical screw is in the diffusion guide mode, the shredded straws in which the pair of split screw portions fall are discharged and guided as described at the beginning, and the shredded straws are dispersed and fall over a wide falling range. When the spiral screw is in the approaching guide form, the shredded straws in which the pair of split screw portions fall are guided to discharge as described at the beginning, and the shredded straws fall together in a narrow range.

The second split drive shaft portion is swung from the screw driving position to the screw mounting / dismounting position, and the free end side of the second split drive shaft portion and the second split drive shaft portion of the first split drive shaft portion. A working space is provided between the shaft and the shaft end. Then, the split screw portion can be attached to and detached from the first split drive shaft portion while the second split drive shaft portion does not hinder the first split drive shaft portion. The split screw part can be attached and detached while preventing it from becoming inconsistent.

[0007]

According to the present invention, the spiral screw can be switched between the diffusion guide mode and the shift guide mode while keeping the driving rotation direction of the screw drive shaft the same, so that the shredded straw can be released and collected later. It has become possible to make it easier to incinerate or to diffuse and release it so that it can be evenly buried in the entire field. In addition, a mechanism for switching the driving rotation direction of the helical screw is omitted, and the structure of the driving mechanism is simplified, so that the driving mechanism can be obtained compactly and inexpensively.

[0008] With only the second split drive shaft portion switched between the screw drive position and the screw mounting / dismounting position while the first split drive shaft portion remains in the mounting position for screw driving, the assembling style of the split screw portion is provided. Can be easily handled and detached from the weight of the object to be detached, compared to the case where the entire screw drive shaft is detached from the shredding device body and the divided screw part is attached and detached. Switching between prime emission and diffuse emission can be made relatively easy.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
A pair of cutter shafts 1 at the rear of the threshing device 2 mounted on
In addition to attaching a waste straw shredding device 10 having 1, 12 and one spiral screw 20, etc., threshing waste straw from a threshing unit (not shown) of the threshing device 2 is transported by a transport device (not shown). It is configured so as to be pinched and conveyed to the rear of the machine body in a sideways posture and supplied to the waste straw shredding device 10 to constitute a combine threshing waste straw processing device. The waste straw shredder 10 is described in detail below. It is configured in.

As shown in FIGS. 1 and 2, the pair of cutter shafts 11 and 12 are rotated inside a shredding machine body 13 around a horizontal axis of the traveling machine body 1 in a rotating direction F1 or F2.
And a plurality of disk cutters 11a provided on one cutter shaft 11 so as to be integrally rotatable at equal intervals in the axial direction of the cutter shaft 11 and the other cutter shaft 12. A large number of disk cutters 12a provided so as to be integrally rotatable at equal intervals in the axial direction of the disk cutters 12a.
Thus, the threshing waste straw dropped and supplied from the waste straw transporting device is received by the culm in a laterally inclined posture along the machine body lateral direction, and the culm is divided into shredded straw having a length determined by the interval between the disk cutters 11a and 12a. Cut in the direction. The shredder is formed by a shredder body 13 between the disk cutters 11a and 12a and below the cutter shafts 11 and 12, and a discharge guide plate 14 extending from the shredder body 13. After falling into a path 15, the straw discharge path 15 is configured to drop into a field through a discharge port 16 formed by the lower end of the discharge guide plate 14.

The helical screw 20 is formed by two divided screw portions divided into a first divided screw portion 21 and a second divided screw portion 22 in the axial direction. The cylindrical shaft portion 2 of each of the divided screw portions 21 and 22
1a or 22a is formed so as to be rotatable relative to the screw drive shaft 23 so as to be rotatable relative to the screw drive shaft 23, and can be inserted and withdrawn.
1 and 22 are connected to the screw drive shaft 23 so as to be separable, and the divided screw portion 2 penetrates through the cylindrical shaft portions 21a and 22a and the screw drive shaft 23.
Each of the divided screw portions 21 and 22 is connected to the screw drive shaft 23 by a connecting pin 24 configured to stop and position the rotation of the screw drive shafts 1 and 22 with respect to the screw drive shaft 23 and the cylindrical shaft portion 21 a or 22 a as a connection portion. Is mounted so as to be rotatable integrally. Screw drive shaft 23
Is a belt pulley that is rotatably attached to the shredding device body 13 by penetrating the straw discharging path 15 in the lateral direction of the traveling body 1 and is rotatably attached to one end of the screw shaft 23. The helical screw 20 is positioned so as to rotate around the horizontal axis of the traveling body 1 in the straw release path 15 by being configured to rotate only in the rotation direction F3 by the driving rotator 25. At the same time, the screw drive shaft 23 is configured to be rotationally driven only in the rotational direction F3. Accordingly, when the shredder falling down the straw discharge path 15 comes into contact with the spiral body 21b of the first split screw portion 21 of the spiral screw 20 or the spiral body 22b of the second split screw portion 22, the spiral screw 20 cuts the shredder. 21b and 22b
As a result, the discharge guide is performed so as to fly in the direction determined by the spiral feed direction of the spiral bodies 21b and 22b.

The screw drive shaft 23 includes a first split drive shaft portion 23a having the drive rotary member 25, and a second split drive shaft portion 2 other than the first split drive shaft portion 23a.
3b and two divided drive shaft portions divided in the axial direction. The first split drive shaft portion 23a is
At the end opposite to the divided drive shaft portion 23b, the shredding machine body 1
3 is supported only by a rotation via a bearing 26 so that the rotation of the shredder 13 does not change from a posture protruding horizontally or almost horizontally from the shredder body 13 into the straw release path 15 and a rotation drive is possible. Like shredding machine body 13
Is rotatably supported. Second split drive shaft portion 23
2B, the end opposite to the first split drive shaft portion 23a is rotatably and swingably supported by the shredding device body 13 via a universal joint 27, and as shown in FIG. One end of a cylindrical connector 28 slidably connected to a spline portion 23c at the end of the shaft portion 23a is connected to a spline portion 23c at a free end of the second split drive shaft portion 23b, When it is fixed so as not to come off from the second divided drive shaft portion 23b by the lock bolt 29, the connecting tool 28 connects the two spline portions 23c concentrically,
The second split drive shaft portion 23b projects from the shredder body 13 horizontally or almost horizontally to the straw release path 15 by being integrally rotatably engaged with both spline portions 23c. The screw driving posture is such that it is arranged concentrically or substantially concentrically with the first driving shaft portion 23a and is connected to the first divided driving shaft portion 23a so as to be integrally rotatable. As shown in FIG.
When the split drive shaft portion 23b is removed from the split drive shaft portion 23b, the second split drive shaft portion 23b is switched from the screw drive position to the screw mounting / dismounting position using the bending point of the universal joint 27 as a rocking fulcrum. Then, there is provided a working space for attaching and detaching the screw portion between the free end of the second divided drive shaft portion 23b and the inner end of the straw release path of the first divided drive shaft portion 23a. Then, the spiral screw 20 is switched to the diffusion guide form shown in FIG. 4A, and as shown in FIG. The straw is dispersed and discharged so as to be evenly dispersed as much as possible, or the spiral screw 20 is switched to the approach guide form shown in FIG. 4 (b) to travel in the shredded straw falling area of the field as shown in FIG. The length of the fuselage in the lateral direction is shortened, and the shredder can be discharged so as to drop a relatively large amount of chopped straw into the center of the falling area.

In other words, in the case where shredded straws that are dropped and released into the field as a result of the mowing operation are later buried in the field,
The helical screw 20 is set in an assembling style shown in FIG. That is, the first split screw portion 21 is assembled to the first split drive shaft portion 23a, and the second split screw portion 22 is assembled to the second split drive shaft portion 23b. Then, the first split screw portion 21 forms one end of the spiral screw 20 and is rotationally driven to spirally feed in the direction of the arrow L, and the second split screw portion 22 forms the other end of the spiral screw 20. With arrow direction R
Is driven to rotate spirally. As a result, one end of the spiral screw 20 including the first split screw portion 21 rotates in a direction (arrow direction L) in which the spiral screw 20 is spirally fed from the center of the spiral screw 20 toward the one end, and the second split of the spiral screw 20 is performed. The other end of the screw portion 22 rotates in a direction (arrow direction R) in which the screw is fed from the center of the screw 20 toward the other end. This allows
The helical screw 20 is in a diffusion guide form and the helical body 21
The shredded straw in the straw release path 15 is guided so as to fly toward the lateral outside of the straw release path 15 by b and 22b.
For this reason, as shown in FIG. 4 (a), the width in the machine direction of the shredded straw falling area of the field becomes relatively wide, and the straw falling in the falling area is dispersed over the entire width, and the shredded straw is spread over the entire field. Diffusion emission can be performed so as to be evenly dispersed.

When shredded straw dropped and discharged into the field as a result of the mowing operation is later collected or incinerated, the helical screw 20 is set in an assembling manner as shown in FIG. That is, the first split screw portion 21 is separated from the second split drive shaft portion 23b by the second split screw portion 22.
Is attached to the first split drive shaft portion 23a. Then, the second split screw portion 22 becomes the spiral screw 20.
And the first split screw portion 21 forms the other end of the spiral screw 20 and rotates so as to spirally feed in the arrow direction L. Driven. This allows
One end of the spiral screw 20, which is the second split screw portion 22, rotates in a direction (arrow direction R) to spirally feed from one end of the spiral screw 20 toward the center, and the first split screw portion 21 of the spiral screw 20. The other end of the spiral screw 20 rotates in the direction of the spiral feed (the direction of the arrow L) from the other end of the spiral screw 20 toward the center. As a result, the spiral screw 20 is brought into the approach guide form, and the spiral bodies 21b and 22b guide the shredded straw of the straw discharge path 15 so as to fly inward in the lateral direction of the straw discharge path 15. For this reason, as shown in FIG. 4B, the width in the lateral direction of the body of the shredder straw fall area in the field is relatively narrow, and a lot of straw fall in the fall area gathers in the center portion, and the shredder straws are linear. Can be released as if gathering at the building.

Switching of the spiral screw 20 between the diffusion guide mode and the shift guide mode is performed in the switching manner shown in FIG. That is, the lock 28 is removed, and the connecting tool 28, which has been released from being fixed to the second divided drive shaft portion 23b, is slid toward the spline portion 23c of the first divided drive shaft portion 23a to perform the second divided drive shaft portion. 23
b, the second split drive shaft portion 23b is switched from the screw driving position to the screw mounting / dismounting position, and the free end side of the second split drive shaft portion 23b and the second split drive shaft portion 23a. And a gap for the screw portion attaching / detaching operation is formed. In this state, the split screw portion 21 or 22 attached to the first split drive shaft portion 23a is disturbed by the second split drive shaft portion 23b or the split screw portion 22 or 21 attached thereto toward the spline portion 23c. The split screw portion 22 or 21 attached to the second split drive shaft portion 23b is removed while preventing it from becoming an object, and the first split drive shaft portion 23a and the split screw portion attached thereto are moved toward the spline portion 23c. Remove 21 or 22 so that it does not become an obstacle. Then, the split screw portion 21 removed from the second split drive shaft portion 23b
Or 22 is attached to the first split drive shaft portion 23a from the spline portion 23c so that the second split drive shaft portion 23b does not become an obstacle, and the split screw portion 22 removed from the first split drive shaft portion 23a
Alternatively, the first split drive shaft portion 23a and the split screw portion 21 or 22 attached thereto are attached to the second split drive shaft portion 23b from the spline portion 23c so as not to be an obstacle. Next, the second divided drive shaft portion 2 having the divided screw portion 22 or 21 attached thereto and arranged to be concentrically aligned with the first divided drive shaft portion 23a.
The connecting member 28 is connected and fixed to 3b, and the second divided drive shaft portion 23b is returned to the screw driving posture.

The first and second divided drive shaft portions 23a, 2
3b is provided with a plurality of pin holes 30 for mounting the connection pins 24, and when one of these pin holes 30 is selected and the connection pin 24 is mounted, the plurality of pin holes 30 are driven. The mounting positions of the divided screw portions 21 and 22 with respect to the screw drive shaft 23 are aligned with the shaft portions 23a and 23b in the axial direction, and
The lateral direction of the machine can be adjusted to adjust the falling condition of the shredded straw in the field. That is, for example, in the case where the spiral screw 20 is in the diffusion guide form, it is better to set the mounting positions of the two split screw portions 21 and 22 to the outside than to the inside in order to reduce the lateral width of the shredder falling range in the field in the machine body lateral direction. As they become wider, shredded straw spreads more throughout the field. Further, when the spiral screw 20 is in the approaching guide form, the lateral width of the shredder falling area in the field becomes narrower when the installation positions of the two split screw portions 21 and 22 are on the inside than on the outside. As a result, the shredded straws gather more linearly and fall. Further, when the culm length of the threshing waste straw supplied to the waste straw shredding device 10 is different and the amount of straw that falls on the other end side of the waste straw release path 15 is smaller than the one end side, the diffusion straw release At the time of the release of the ridge, both the split screw portions 21 and 22 are attached to the side where the amount of the falling straw is larger, so that the straw can be more evenly dispersed in the entire falling range or the falling range can be reduced. It is easier to concentrate on the center.

[Other Embodiment] If the screw drive shaft 23 is formed as a divided shaft as in the above-described embodiment, the divided shaft portion 23a as one part is attached to the body, and the divided shaft portion 23b as another part is kept. By swinging the screw, it is possible to easily switch the manner of assembling the spiral screw, which is advantageous.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of a combine threshing waste straw treatment device.

FIG. 2 is a sectional view of a spiral screw.

FIG. 3 is an explanatory view of a procedure for attaching and detaching a divided screw part.

FIG. 4 is an explanatory diagram of an operation state of a spiral screw.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Discharge straw shredding device 13 Shredding device body 15 Straw releasing path 20 Helical screw 21, 22 Split screw portion 21a, 22a Connected portion 23 Screw drive shaft 23a, 23b Split drive shaft portion

Claims (1)

(57) [Claims] 1. A combine harvester comprising a waste straw shredding device (10) for shredding a threshing waste straw in the culm body direction with the culm body lying in a sideways position along the machine body lateral direction and dropping and discharging the shredded straw. A threshing waste straw processing device, comprising: a straw release route (15) of the waste straw shredding device (10).
A spiral screw (20) that contacts the shredder falling down the straw release path (15) and guides the release, and is rotatably driven around an axis in the lateral direction of the machine body; Consists of a pair of split screw parts (21) and (22)
The pair of divided screw part (21), (22) connection portion for detachably coupled to each which screw drive shaft (23) (21a), provided with a (22a), said pair of divided screw parts ( Before 21), (22)
Swing one end and the other end of the screw drive shaft (23).
By changing the spiral screw (2)
0) is rotated in the direction of spiral feeding from the center of the spiral screw (20) toward the one end, and the other end of the spiral screw (20) is rotated by one end of the spiral screw (20). A diffusion guide form that rotates in the direction of spiral feeding from the center toward the other end, and the spiral screw
One end portion of (20) rotates in the direction of spiral feeding from one end side of the spiral screw (20) toward the center portion,
The helical screw (20) switches to a shift guide mode in which the other end of the helical screw (20) rotates in the direction of helical feeding from the other end of the helical screw (20) toward the center. The screw drive shaft (23) is divided into a first part
The split drive shaft portion (23a) and the second split drive shaft portion (23
b), and the first split drive shaft portion (23a) is
At the end opposite to the second divided drive shaft portion (23b),
It is supported rotatably by the cutting device body (13),
The second split drive shaft portion (23b) is used for the first split drive shaft portion (23b).
At the end opposite to the shaft portion (23a),
(13) It is supported rotatably and swingably
The first split drive shaft portion (23a) is concentrically integrated with the first drive shaft portion (23a).
A screw drive posture for movably connecting and the first division
Screw attachment / detachment posture separating from drive shaft part (23a)
Combine threshing and waste stirrer processing unit that can be switched between