JPH0576247U - Rotating blade exchange device for disc cutter - Google Patents

Abstract

(57) [Summary] [Purpose] The rotary blade can be replaced safely with a simple operation. [Structure] The rotating shaft 3 on the rear side is mounted on a rear plate 7 of a cutter case 5 by bearings 8, 8 attached thereto, and the rear plate 7 is rotatable rearward about a lower pivot shaft 9. A support body 61 is provided which supports the rotary blades 4 and 4 mounted on the rotary shaft 3 from both sides when the rear plate 7 is rotated rearward. [Effects] By rotating the rear plate 7 rearward about the lower pivot 9, the rotary shaft 3 is positioned on the rear plate 7 as if it were placed thereon, and the upper part thereof is opened. , The rotary blades 4 mounted on the rotary shaft 3 are held by the support 61,
The rotary blade 4 can be replaced easily and safely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc cutter that cuts threshing culm supplied in a sideways posture by a large number of rotary blades mounted on a pair of rotary shafts, and more specifically, it is mounted on the rotary shafts. The present invention relates to a rotary blade exchanging device in a disc cutter for exchanging a rotary blade.

[0002]

[Prior Art]

 Conventionally, as a rotary blade exchanging device for this type of disk cutter, there is one described in Japanese Utility Model Laid-Open No. Sho 60-194951. In these techniques, when exchanging the rotary blade, The work cannot be performed unless the tool is removed from the cutter case together with the rotating shaft.

[0003]

[Problems to be solved by the device]

 This invention solves the above-mentioned drawbacks of the prior art and intends to easily and safely replace the rotary blade attached to the cutter case.

[0004]

[Means for Solving the Problems]

 In the cutter case 5 located below the culm carrier device 1, a pair of rotary shafts 2 and 3 equipped with a plurality of rotary blades 4 are mounted to cut the culm supplied in a sideways posture. In the disc cutter, the rotary shaft 3 on the rear side is supported by bearings 8, 8 attached to the rear plate 7 of the cutter case 5, and the rear plate 7 can be pivoted rearward about a lower pivot 9 as a center. The rotation attached to the rotary shaft 3 when the rear plate 7 is rotated backward and the rotary shaft 3 located on the rear plate 7 is pulled out laterally from the bearings 8 and 8 The rotary blade replacing device of the disc cutter is configured by providing the rear plate 7 with the support 61 for supporting the blades 4 from both sides.

[0005]

When the rotary blades 4 and 4 are replaced, the rear plate 7 is rotated about the lower pivot shaft 9 to a position where the rear plate 7 is in a substantially horizontal state. The rotary shaft 3 attached via the bearings 8 and 8 is positioned so as to be mounted on the rear plate 7, and further, since the rear plate 7 rotates about the lower pivot 9, The upper side of the fixed cutter case 5 is largely opened without overlapping in plan view. When the rotary shaft 3 is pulled out laterally from the bearings 8 and 8 in this state, the rotary blades 4 and 4 are unsupported and placed on the rear plate 7 approaching downward, and are supported by the support 61 on both sides. It is supported by the robot and is held without falling or falling down. The rotary blades 4 and 4 are replaced with new rotary blades 4 and 4, the rotary shaft 3 is inserted again, and then the rear plate 7 is returned and rotated about the pivot 9, so that the cutting operation can be continued.

[0006]

[Effect of the device]

 Since this invention is constructed as described above, when the rear plate 7 is pivoted rearward about the lower pivot 9 until it becomes substantially horizontal, the rear plate 7 is mounted via the bearings 8 and 8. The rotating shaft 3 to be worn is positioned on the rear plate 7 so that it is also placed on the rear plate 7, and the upper part of the rotary shaft 3 is largely opened to facilitate the work, and the rear plate 7 functions as a safety cover. Can be done safely. When the rotary shaft 3 is pulled out laterally from the bearings 8 and 8 in this state, the rotary blades 4 and 4 are placed on the rear plate 7 which is approaching, and are supported by the support 61 from both sides and fall down. The rotary blades 4 and 4 can be safely held on the cutter case 5 without being dropped downward.

[0007]

【Example】

 The disc cutter of the present invention is mounted on the culm discharge side of the combine threshing device 10, and the locking body 11 on the front face of the cutter case 5 is fitted and fixed to the pin 12 of the threshing device 10. is there. The culm conveying device 1 conveys threshed culms, and the end thereof is exposed to the culm supply port 13 of the cutter case 5. 14 is the pinching rod. The cutter case 5 is composed of both side plates 6 and 6, an upper plate 15 excluding the supply port 13 part, a front plate 16 and a rear plate 7, and a guide case 18 for discharging and guiding cut culms is provided under the cutter case 5. There is. Reference numerals 19 and 19 denote connecting frames made of square tubular members, and connect and reinforce the side plates 6 and 6 at the upper front part and the lower rear part of the cutter case 5.

The rotary shaft 2 is mounted between both side plates 6 and 6 in the upper front part of the cutter case 5 close to the culm carrier device 1, and the rotary shaft 3 is mounted on both side plates 6 and 6 of the rear plate 7. The bearings 8 and 8 are mounted on the inner side, and are mounted on the lower rear side of the rotary shaft 2. Rotary blades 4 and 4 serving as cutting blades are attached to the rotary shaft 3 at predetermined intervals, and the rotary shaft 2 corresponds to the rotary blades 4 and 4 and is slightly overlapped in a side view. Rotating blades 4 and 4 serving as receiving blades are provided, and a scraping protrusion is formed on the outer periphery on one side of the rotating shafts 4 and 4, and the scraping bodies 20 and 20 having a larger diameter than the rotating blade 4. Is provided. Reference numerals 21 and 21 are blade pressing plates, and 22 and 22 are winding prevention pipes.

Before and after the culm supply port 13, culm guide plates 23 and 24 are provided so that the supplied culms can be guided to the cutting portion, and the culms are discharged without being cut. In some cases, it is configured so as to be rotatable around the pivots 25, 25 to a position where the supply port 13 is closed. Reference numeral 26 denotes an input pulley, which is attached to an input shaft 27 that is mounted on one side plate 6 and projects outward, and is transmitted from the threshing device 10 by a belt 28. A sprocket 29 and a gear 30 are attached to the input shaft 27, and the attached gear 31 and the gear 30 are meshed with the end of the rotary shaft 2 protruding to the outside of the one side plate 6. Side plate 6 A chain 33 is hung between the sprocket 32 and the sprocket 32 attached to the end of the rotary shaft 3 protruding outward, so that the rotary shafts 2 and 3 can be driven and rotated. A tension pulley 34 applies a predetermined tension to the chain 33.

The rear plate 7 has a reinforcing plate 35 welded thereto so as to have sufficient strength, mounting plates 36, 36 are attached and extended to the left and right lower ends of the rear plate 7, and the mounting plates 36, 36 are pivotally attached to the ends thereof. 9 and 9 are projected to one side and welded. Reference numerals 37, 37 denote bearings, which are welded along the rear lower coupling frame 19 and the pivots 9, 9 are fitted from one side so that the rear plate 7 is centered on the pivots 9, 9. It is rotatably supported. Bearings 8 and 8 are attached to the inner sides of both side plates 6 and 6 of the rear plate 7 by bolts 38 and 38, and the rotary shaft 3 between the bearings 8 and 8 has the above-mentioned rotary blades 4 and 6. 4, cutting members such as the blade pressing plates 21, 21 and the winding prevention pipes 22, 22 are positioned, and one end side of the rotating shaft 3 is projected outward from the side plate 6 and the sprocket 32 is attached to the end thereof. Is bolted so that it can be transmitted. Further, the side plate 6 on the transmission side is formed with an arcuate notch 40 in which the rotary shaft 3 can move. The other end of the rotary shaft 3 is slightly protruded laterally from the bearing 8 and the winding prevention cap 41 is fixed by a countersunk screw 42. Therefore, the other end of the rotary shaft 3 is located inside the side plate 6. It is located at.

Next, the support 61 will be described. Reference numerals 62 and 62 are narrow rotating plates pivotally supported on the upper end of the rear plate 7, and when the rear plate 7 is erected, the side plates 6 and 6 of the cutter case 5 are erected. 6 is placed on. A mounting plate 64 is installed between the rotating plates 62, 62, and a support 61 composed of a pair of elastic plates is provided on the lower surface of the mounting plate 64 for the rotary blades 4, 4 mounted on the rotary shaft 3. It is located and a plurality of them are provided. Further, the support 61 is interposed in the supply port 13 of the cutter case 5.

Next, the locking device (A) for the rear plate 7 will be described. Fixing pins 44, 44 projecting inward are attached to the upper rear positions of the left and right side plates 6, 6, and the rear plate 7 is attached. A fitting plate 45 is fixed to the plate 7 so as to project forward and to form a concave portion into which the left and right fixing pins 44 can be fitted from the rear. Further, a pin 47 is projected from one side of the intermediate portion of the fitting plate 45, and a pivoting plate 49 having an engaging piece 48 capable of engaging with the front surface of the fixed pin 44 is pivotally supported on the pin 47. A winding spring 50 for elastically urging the rotating plate 49 in the locking direction is tensioned between the two.

Numerals 51, 51 are connecting rods, whose front ends are attached to the lower surfaces of the left and right rotating plates 49, 49, and which extend rearward through the vertical holes 52 formed in the rear plate 7. The rear end of the extension is connected to the lower surfaces of both sides of the operation tool 53. The operation tool 53 is composed of a plate body having substantially the same width as that of the rear plate 7 and continuously inclining to the rear end of the upper plate 15 in the same direction, and its upper surface is also used as a guide surface for uncut culms. Next, the fixing device when the rear plate 7 is rotated rearward will be described. At the left and right side portions of the rear lower coupling frame 19, the rearward projecting side is projected toward the rear drive device side. The locking pins 54, 54 to be bent are attached, and one end of the arc-shaped restricting plates 55, 55 is attached to the left and right mounting plates 36, 36, which are attached to the rear plate 7. The locking pin 54 is fitted into an arc-shaped long hole 56 formed in the.

Reference numeral 59 denotes a focusing device, which is rotatably supported by a shaft 60 and is suspended by a spring 61. When the input shaft 27 is driven and rotated by the belt 28 via the input pulley 26, the rotary shaft 3 is driven and rotated from the sprocket 29 attached to the input shaft 27 via the chain 33 and the sprocket 32, and the gear 30 The drive shaft 2 is rotated via the gear 31. The culms discharged from the culm carrier device 1 are supplied from the supply port 13 into the cutter case 5, and then guided by the culm guide plates 23 and 24 to be fed to the cutting portion, and the scraping body 20, While being scratched by 20, it is shredded by the rotary blades 4, 4 of the rotary shafts 2, 3 and discharged from the lower guide case 18 to the ground.

Next, when inspecting the disk cutter or removing the culm that winds around the rotary shafts 2, 3 and the rotary blades 4, 4, etc., loosen the tension roller 34 and sprocket the chain 33. After removing from 32, the operating tool 53 on the upper rear surface of the cutter case 5 is held by both hands and lifted upward, and one end is attached to the operating tool 53 to rotate it through the left and right connecting rods 51, 51. The moving plates 49, 49 are rotated in the direction of the arrow (a) around the pin 47 against the elastic force of the winding spring 50. Therefore, the locking piece 48 at the tip of the rotating plate 49 is attached to the side plate 6. It retreats from the front surface of the fixing pin 44 provided in. When the operating tool 53 is pulled rearward in this state, the rear plate 7 is pivoted rearward about the pivots 9, 9 held by the left and right bearings 37, 37 fixed to the connecting frame 19, and further the rear plate 7 is rotated. When the plate 7 is rotated to a substantially horizontal position, the ends of the arc-shaped elongated holes 56, 56 formed in the restriction plates 55, 55 attached to the mounting plates 36, 36 of the rear plate 7 and rotated together. The rear plate 7 is held by abuttingly locking the locking pins 54 and 54 attached to the connecting frame 19.

By this rotating operation, the rotary shaft 3 held by the bearings 8, 8 mounted on the rear plate 7 is completely exposed on the upper side together with the rotary blades 4, 4 mounted on the shaft 3, Moreover, since it is positioned as if it were placed on the rear plate 7 and does not overlap with the fixed-side cutter case 5 in plan view, it is possible to easily carry out maintenance and inspection such as removal of the winding culm. Further, the rotary blade 4 serving as a cutting blade attached to the rotary shaft 3 is configured so that the peripheral speed thereof is faster than that of the rotary blade 4 serving as a receiving blade attached to the rotary shaft 2. Since the stocker side of the culm is positioned and supplied to the side where the transmission is provided, the rotary blades 4 and 4 near the transmission are rapidly worn.

Next, when exchanging the rotary blades 4 and 4, first, the rotary plates 62 and 62 are rotated around the pivot 63, and the bridges 62 and 62 are attached to each other. The supports 61, 61 attached to the plate 64 are fitted to the rotary blades 4, 4. Next, loosen and remove the sprocket 32 fitted to one end of the rotating shaft 3, and further loosen the countersunk screw 42 to remove the winding prevention cap 41 and remove the rotating shaft 3 by pulling the rotating shaft 3 in the direction of arrow (b). The shaft support state is sequentially released from the rotary blades 4 corresponding to the stocker side, but the rotary blades 4 are placed on the approaching rear plate 7 and are composed of a pair of elastic plates. Since it is supported from both sides by, it will not fall down or fall down. In this state, the rotary blade 4 is exchanged, the rotary shaft 3 is inserted again, and the rotary blade 4 is pivotally supported.

It is also possible to loosen the bolts 38, 38 and remove the rotary shaft 3 together with the left and right bearings 8, 8 from the rear frame 7 for maintenance and inspection. Further, if the entire rear frame 7 is moved toward the transmission device, that is, in the direction opposite to the arrow (b), and the left and right pivots 9, 9 below the rear frame 7 are removed from the bearings 37, 37, the bearings 8, 8 and The entire rear frame 7 can be removed from the cutter case 5 with the rotary shaft 3 still attached. The maintenance and inspection work of the rotary shaft 2 held by the side frames 6 and 6 can be performed from above the rear frame 7 to be opened, but the locking body 11 located on the transmission side of the cutter case 5 and the threshing device. After the engagement with the pin 12 on the 10 side is released, the cutter case 5 is horizontally moved around the upper and lower pins 58, 58 fitted and supported by the bearings 57, 57 on the other side of the threshing device 10 on the other side. It may be rotated to form a space for maintenance and inspection between the threshing device 10 and the front surface of the cutter case 5. When the culms are discharged without being cut, the culms guide plates 23 and 24 are rotated around the pivot 25 to close the supply port 13 of the cutter case 5, and the culms are conveyed by the culms conveying device 1. The discharged culm passes through the supply port 13 and is guided to the upper plate 15 and further to the guide surface of the operation tool 53, and is smoothly supplied to the focusing device 59 without disturbing its posture. It should be noted that when the focusing device 59 is not used, the focusing device 59 is rotated to be stored, but in this case, the end of the focusing device 59 is located below the operation tool 53 so that there is no hindrance to the flow of culms. .

In the embodiment shown in FIG. 5, the support 61, which is pivotally supported 63 at the upper end of the rear plate 7, is formed of a plate, and is also used as the upper plate 15 of the cutter case 5, and the plate-like shape is also used. A slit is formed in the support 61 of the support 61 at a position corresponding to the rotary blades 4 and 4 mounted on the rotary shaft 3, and the support 61 is rotated by the slit when the support 61 is rotated around the pivot 63. It is configured to hold the blades 4, 4 from both sides. Reference numeral 65 is a cutting culm sending device.

[Brief description of drawings]

FIG. 1 is a side view in which a main part is partially broken.

FIG. 2 is a side view showing a state in which a rear plate is opened.

FIG. 3 is a rear view showing a state in which a rear plate is opened.

FIG. 4 is a sectional view of a main part.

FIG. 5 is a side sectional view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 culm conveyor device 2 rotary shaft 3 rotary shaft 4 rotary blade 5 cutter case 6 side plate 7 rear plate 8 bearing 9 pivot 61 support

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Ohashi 1-2-5 Kinzan, Matsuyama City, Ehime Prefecture Shikoku Manufacturing Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A pair of rotary shafts (2), (3) for mounting a large number of rotary blades (4), (4) in a cutter case (5) located below a culm carrier device (1). In a disc cutter of a type that cuts off culm supplied in a laid sideways posture, a bearing (8) for attaching a rear rotation shaft (3) to a rear plate (7) of the cutter case (5), The rear plate (7) is pivotally mounted by (8), and further, the rear plate (7) is configured to be rotatable rearward about the lower pivot (9), and the rear plate (7) is rotated rearward to form the rear plate. (7) Rotary blades (4), (4) attached to the rotary shaft (3) when the rotary shaft (3) located above is removed laterally from the bearings (8), (8) A rotary blade exchange device for a disk cutter, comprising a rear plate (7) provided with a support (61) for supporting both sides of the disk.