JPH0310821Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is based on a pair of culms that are discharged as long culms from the threshing section or stem culms of cut down grass, etc., which are installed parallel to each other and rotate in opposite directions. This invention relates to a disk-type cutter that cuts using a plurality of cutting blades and a rotary receiving blade that are each attached to a rotating shaft, and to a device for changing the cutting dimension.

Conventional technology Conventionally, a device for changing cutting dimensions in a disc cutter is described in Japanese Patent Application Laid-Open No. 53-134656, and this device has a large-diameter rotary blade and a small-diameter rotary blade. The cutting dimension is changed by adjusting the shaft to which the large-diameter receiving blade and the small-diameter receiving blade are attached in the distance direction relative to the shaft to which the large-diameter receiving blade and the small-diameter receiving blade are attached.

Problems to be solved by the invention In this kind of disc cutter with variable cutting dimensions, the rotary blade moves relative to the receiving blade, so the cutting position and raking path length are changed, and the feeding condition of the culm is changed. changes, which adversely affects cutting performance.

In addition, if the amount of intersection between the large-diameter rotary blade and the large-diameter receiving blade is set to be large to ensure that the grain culm is raked in, this large-diameter rotating blade and large-diameter receiving blade may be As the amount of intersection between the diameter rotary blade and the large diameter receiving blade increases, the intersection angle becomes extremely large, and the culm raking performance and cutting blade performance deteriorate.

This invention aims to eliminate the above-mentioned drawbacks and to create a variable cutting size disc cutter that can maintain a predetermined cutting performance even when changing the cutting size.

Means for Solving the Problem A pair of rotating shafts 2 and 3 that are approximately parallel to the orientation of the transported culm and rotate in mutually opposite directions are arranged below the culm conveying device 1, and the rotating shaft 2 on one side rotates in opposite directions. is provided with a plurality of scraping bodies 4 and rotating receiving blades 5 having a smaller diameter than the scraping bodies 4 at appropriate intervals in the axial direction, and the rotating shaft 3 on the other side is provided with a large diameter cutting blade 6 and a small diameter cutting blade 7. are provided alternately at positions corresponding to the rotating receiving blade 5, and a plurality of guide rods 8 are attached to the frame body 9 for repelling the culm being scraped toward the scraping body 4 side, and the large diameter cutting blade 6 is attached to the frame body 9. The rotary shaft 3 is configured to be movable and adjustable between a short cutting position where both the small diameter cutting blade 7 and the rotating receiving blade 5 intersect, and a long cutting position where only the large diameter cutting blade 6 intersects the rotating receiving blade 5. This is a disc cutter with variable cutting dimensions.

Operation When performing long cutting work, the rotating shaft 3 is moved so that only the large diameter cutting blade 6 intersects with the rotating receiving blade 5.

The culm supplied from the culm conveying device 1 is stopped by the protrusion of the large-diameter scraping body 4, and the scraping body 4
It is held in place by a guide rod 8 that is thrown to the side and is reliably scraped in, and is cut into a long dimension only at the intersection of the large-diameter cutting blade 6 and the rotary receiving blade 5.

During this long cutting, it is necessary to make only the large-diameter cutting blade 6 intersect with the rotary receiving blade 5 and to separate the small-diameter cutting blade 7 from the rotating receiving blade 5. The waste culm is reliably fed to the cutting section by the filling body 4 and is cut.

Next, when performing short cutting work, the rotating shaft 3 is moved in the direction closer to the rotating shaft 2, and the rotating receiving blade 5
In contrast, both the large diameter cutting blade 6 and the small diameter cutting blade 7 are made to intersect with each other.

Although the cutting position and the raking path length of the culm change due to this switching to the short cutting operation, the grain culm in the middle of raking is is clamped and guided to the scraping body 4 and accurately supplied to the cutting section.

In addition, during this switching, the upper culm conveying device 1, the scraping body 4, and the guide rod 8 maintain a constant relative position without moving, and the transfer performance and scraping performance of the culm are not changed and the transfer is ensured. It is supplied and shredded by the rotating receiving blade 5, the large-diameter cutting blade 6, and the small-diameter cutting blade 7.

Effects of the invention Since this invention is constructed as described above, the cutting length can be adjusted in long and short dimensions with a simple operation of adjusting the movement of the rotating shaft 3 to which the large-diameter cutting blade 6 and the small-diameter cutting blade 7 are attached. Furthermore, when changing the cutting dimension, the upper conveying device 1, the scraping body 4, and the guide rod 8 do not move and maintain a constant relative position, which reduces the inheritance performance of the culm. It is possible to reliably perform raking and supply without any problems.

In addition, when changing the cutting dimensions, the length of the raking path and the cutting position are slightly changed, but the cutting position is changed as the culm is held and guided by the plurality of guide rods 8 that spring toward the raking body 4. It can be accurately supplied to

Furthermore, during long cutting, it is necessary to intersect only the large-diameter cutting blade 6 with the rotary receiver blade 5 and to separate the small-diameter cutting blade 7, which makes it impossible to form the above-mentioned intersection large.
Since the culm is reliably scraped and cut by the scraping body 4 having a larger diameter than the rotating receiving blade 5, the diameters of the large diameter cutting blade 6 and the small diameter cutting blade 7 are changed greatly as in the conventional method. It is unnecessary and the cutting performance does not deteriorate.

Embodiment In the illustrated example, the frame body 9 is attached to the lower part of the culm conveying device 1 at the rear of the threshing device (not shown),
A discharge culm receiving port 10 is provided on the top surface, and a cut straw discharge port 11 is provided on the bottom surface, and the other surface is surrounded by side plates 12, 12, a rear plate 13, etc.

The pair of rotating shafts 2 and 3 are installed so that their axial directions are substantially parallel to the orientation of the culm being transported, but the rotating shaft 2 on one side is positioned above the other and closer to the culm conveying device 1. It is provided.

The rotary shaft 2 has scraping bodies 4, 4 which are installed on both side plates 12, 12 and have protrusions 14, 14 on the outer periphery at predetermined intervals in the axial direction, and a blade edge is formed on the outer periphery with a smaller diameter than the scraping body 4. Rotary receiving blades 5, 5 are attached. or,
The spacing between the scraping body 4 and the rotary receiving blade 5 is such that the cylindrical portion 15 formed at the base of the scraping body 4 is brought into contact with the rotary blade 5. Further, 16 is an idle collar that prevents winding around the shaft 2.

A large-diameter cutting blade 6 and two small-diameter cutting blades 7 are alternately arranged on the rotating shaft 3 installed below the rotating shaft 2 and on the rear side of the culm conveyance device 1, and these cutting blades 6 and 7 are arranged alternately. A blade edge is formed on the outer periphery of the blades 6 and 7 in the same manner as the rotary receiving blade 6. Further, the cutting blades 6 and 7 are attached in such a manner that they can intervene in the gap between the scraping body 4 and the rotary receiving blade 5.

Reference numeral 17 indicates an idle collar for preventing wrapping.

The guide rod 8 is formed of an elastic plate, has a base located at the rear of the culm supply port 10, extends along the outer periphery of the scraper 4, and has its tip located at the cutting section.

18, 18 are pivots fixed to the side plates 12, 12, and on the outside side of the side plate 12 of the pivot 18 on one side,
A metal 19 is loosely fitted, and an input pulley 20, a sprocket 21, and a gear 22 are integrally provided on the metal 19. One ends of rotating arms 23, 23 are pivotally supported on the inner sides of the side plates 12 of the pivots 18, 18, and bearings 24, 24 are fixed to the center portions of the rotating arms 23, 23. The rotary shaft 3 is supported by the rotary shaft 3. Further, one side of the rotating shaft 3 extends outward from the side plate 12, and a sprocket 25 is mounted thereon.
26 is a transmission chain wound between sprockets 21 and 25, 27 is a long hole for moving the rotating shaft 3 formed in both side plates 12 and 12, 28 is an input belt, and 40
is the input gear of the rotating shaft 2.

A connecting pipe 29 is attached between the other ends of the rotating arms 23, 23, and a sliding shaft 3 is disposed within the connecting pipe 29.
0 is provided passing through both side plates 12,12. An operating handle 31 is attached to one end of the sliding shaft 30, and a long hole 32 for moving the sliding shaft 30 and a locking rod 33 protruding from the operating handle 31 are connected to the side plate 12 on the side of the operating handle 31. Removable three-stage locking hole 3
4, 35, and 36, and the other side plate 12 has three stages of insertion holes 3 through which the sliding shaft 30 can be inserted and locked.
7, 38, and 39 are formed.

The position of the rotating shaft 3 held by the first-stage locking hole 34 and the insertion hole 37 is set at a position where both the large-diameter cutting blade 6 and the small-diameter cutting blade 7 intersect the rotating receiving blade 5. , and the second stage locking hole 35 and insertion hole 38
This is at a position where only the large diameter cutting blade 6 intersects with the rotating receiving blade 5, and that of the third stage locking hole 36 and insertion hole 39 is located at a position where only the rotating receiving blade 5 and the large diameter cutting blade 6 intersect. They are set at positions where their outer peripheries almost touch.

When performing long cutting work, the rotating shaft 3 is held by the locking hole 35 and the insertion hole 38, and only the large-diameter cutting blade 6 is made to intersect with the rotating receiving blade 5. The culm supplied from the culm conveying device 1 is stopped by the protrusions 14, 14 of the large-diameter raking body 4, and the culm is
The rotating receiving blade 5 and the large-diameter cutting blade 6 are clamped by the guide rod 8 and reliably supplied to the cutting section.
It can only be cut by .

Next, when performing short cutting work, the rotary receiving blade 30 is slid in the direction of arrow A using the operation handle 31, and the locking rod 33 and the locking hole 35 are engaged and the end of the sliding shaft 30 is moved. After releasing the engagement with the insertion hole 38 of the side plate 12, when the operating handle 31 is rotated in the direction of the arrow B, the rotating arms 23, 23 fixed to the connecting pipe 29 that accommodates the impulse shaft 30 are rotated. Axis 18, 18
The large-diameter cutting blade 6 and the small-diameter cutting blade 7, which are rotated around the rotating shaft 3 installed between the rotating arms 23 and 23, intersect with the rotating receiving blade 5, and are operated at this position. The sliding shaft 30 is pushed in the opposite direction of the arrow A by the handle 31, the locking rod 33 is inserted into the locking hole 34, and the other end of the sliding shaft 30 is engaged with the insertion hole 37 and fixed.

The waste culm supplied from the waste culm conveying device 1 is transferred to the cutting section by the clamping guide between the large-diameter scraping body 4 and the guide rod 8, and is transferred to the rotary receiving blade 5, the large-diameter cutting blade 6, and the small-diameter cutting blade 7. It is twisted and shredded.

When switching to short cutting, the relative positions of the scraping body 4, the culm conveying device 1, and the guide rod 8 do not change in any way, and the culm is reliably fed to the cutting section.

Also, when switching to short cutting, the rotating receiving blade 5
Due to the change in the intersection range of the large-diameter cutting blade 6, the length of the cutting path and the cutting position will be slightly changed; will be reliably guided to the desired cutting position.

Next, if you want to release the culm uncut and make a cut in the culm to improve the drying effect, slide the operating handle 31 in the direction of arrow A in the same way as above and press the locking rod 33. Engagement with locking hole 34 and sliding shaft 3
0 and the insertion hole 37, and then rotate the operating handle 31 in the direction opposite to the direction of the arrow B to connect the outer periphery of the large-diameter cutting blade 6 attached to the rotating shaft 3 installed between the rotating arms 23, 23. Bring the outer periphery of the rotary receiving blade 5 approximately close to each other, and in this state push the operating handle 31 in the opposite direction of arrow A to move the locking rod 33 into the locking hole 36 and engage the other end of the sliding shaft 30 with the insertion hole 39 and fix it. do.

The culm supplied from the culm conveying device 1 is transferred to the scraping body 4
It is transferred while being clamped by the guide rod 8, cuts are made by the rotary receiving blade 5 and the large-diameter cutting blade 6, and it is discharged into the field from the lower discharge port 11.

Therefore, the culms with these cuts have a good drying rate, and since they are not cut into pieces, they can be easily collected with a scraping device such as a roll baler.

In the illustrated example, the scraping body 4 and the rotary catch blade 5 are provided separately, but the rotary catch blade 5 can be rotated by protruding outward at multiple locations on the outer periphery to form scraping protrusions 14, 14. Even if the receiving blade 5 and the scraping body 4 are configured integrally, similar effects can be obtained.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Figures 1 and 2 are side sectional views, Figure 3 is a side view, and Figure 4 is a side sectional view.
The figure is a developed rear view. In the figure, reference numeral 1 indicates a culm conveyance device, 2 and 3 are rotating shafts, 4 is a scraper, 5 is a rotary receiving blade, 6 is a large diameter cutting blade, 7 is a small diameter cutting blade, and 8 is a guide rod.

Claims (1)

[Scope of utility model registration request] A pair of rotating shafts 2 and 3 that are approximately parallel to the orientation of the culm being transported and rotate in opposite directions are arranged below the culm transporting device 1, and the rotating shaft 2 on one side is provided with shafts at appropriate intervals in the axial direction. A plurality of scraping bodies 4 and a rotary receiving blade 5 having a smaller diameter than the scraping body 4 are provided, and a large diameter cutting blade 6 and a small diameter cutting blade 7 are placed on the other side of the rotating shaft 3 at positions corresponding to the rotating receiving blade 5. A plurality of guide rods 8 are provided alternately and are attached to the frame body 9 to urge the culm being scraped toward the scraping body 4 side, and both the large diameter cutting blade 6 and the small diameter cutting blade 7 are installed. A disc cutter with variable cutting dimensions in which the rotary shaft 3 is movable and adjustable between a short cutting position where only the large diameter cutting blade 6 intersects with the rotating receiving blade 5 and a long cutting position where only the large diameter cutting blade 6 intersects with the rotating receiving blade 5. Tar.