JPH0520540U - Rotating shaft support structure for disk cutter - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the replacement work of the disc blade 1 in a disc cutter. [Structure] A drive-side end of a rotary shaft 2 is detachably connected to a short shaft 4 axially supported by a machine frame 3 and a long shaft 5 provided with a disc blade 1. Further, the driven-side end of the rotary shaft 2 is supported by a bearing member 7 which is bendable by a support shaft 6 orthogonal to the axial direction. After the short shaft 4 and the long shaft 5 are separated, the long shaft 5 is rotated outwardly about the support shaft 6 so that the drive-side shaft end of the long shaft 5 is opened in the machine frame 3. It has been made possible to project outward from the part. [Effect] The disc blade 1 can be replaced while the long shaft 5 is supported by the machine frame 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disk cutter that is mounted on a combine aircraft to cut threshed straw and release it to a field.

[0002]

[Prior art]

 The combine disc cutter has a structure in which a high-speed rotating shaft and a low-speed rotating shaft are placed horizontally within the cutter machine frame, and both rotating shafts are provided with disc blades and scraping discs at predetermined intervals, so that the bait of straw can be eliminated. It is supplied to the cutting part in a direction substantially parallel to the axis of the rotating shaft, cut into short pieces, and discharged to the field. With this disc cutter, when the cutting edge of the disc blade becomes worn and cannot be cut due to long-term use, the rotary shaft is removed from the machine frame and the disc blade is replaced. For this reason, various technical means have been devised for facilitating removal of the rotary shaft from the machine casing.

[0003]

[Problems to be solved by the device]

 With the conventional means for attaching the rotary shaft to the machine frame in the disk cutter, the rotary shaft on which the disc blade is arranged is long and heavy, and it is difficult to remove and attach it alone. In addition, it may take a long time to work because the structure is such that the rotary shaft is detached from the machine frame after the cutter machine frame is removed from the combine machine body.

[0004]

[Means for Solving the Problems]

 Therefore, in the present invention, in the disc cutter in which the rotary shaft 2 having the disc blades 1 arranged at a predetermined interval is horizontally mounted in the machine frame 3, the short shaft 4 axially supported by the machine frame 3 and the disc blade 1 are arranged. The drive-side end of the rotary shaft 2 is detachably connected to the long shaft 5, and the driven-side end of the rotary shaft 2 is supported by a bearing member 7 that is bendable by a support shaft 6 that is orthogonal to the axial direction. Then, after the short shaft 4 and the long shaft 5 are separated, the long shaft 5 is rotated outwardly about the support shaft 6 so that the drive-side shaft end of the long shaft 5 of the machine frame 3 moves. It is designed so that it can be projected outward from the opening.

[0005]

[Operation and effect of the device]

 If the disc blade 1 wears after using the disc cutter for a long period of time, the disc blade 1 is removed from the rotary shaft 2 and polished or replaced with a new disc blade 1. In that case, first, the machine frame 3 has an opening formed therein, and a drive shaft end portion of the rotary shaft 2 is provided with a short shaft 4 supported by a machine frame 3 and a long shaft 5 provided with a disc blade 1. After separating, the bearing member 7 supporting the driven side shaft end of the rotary shaft 2 is rotated around the support shaft 6 so that the drive side shaft end projects outward from the opening of the machine frame 3. Move. In this state, the disc blade 1 is removed from the rotary shaft 2 or assembled. The bearing portion 7 may be detachable from the machine frame 3 so that the long shaft 5 can be taken out of the machine frame 3 and the disc blade 1 can be replaced.

When the disc blade 1 is attached to the long shaft 5, the whole long shaft 5 is rotated around the support shaft 6 into the machine frame 3 to connect the short shaft 4 and the long shaft 5 to each other. By closing the opening of 3, the disc blade 1 replacement work is completed. As described above, since the disc blade 1 can be replaced while the driven side shaft end of the long shaft 5 on which the disc blade 1 is disposed is supported by the machine frame 3, the work is facilitated.

[0007]

【Example】

 Next, an embodiment of the present invention will be described. The cutter machine frame 3 is made of a plate material in the shape of a hollow rectangular parallelepiped, has a supply port on the upper side and a discharge port on the lower side, and internally supports a pair of rotating shafts 2 and 8 in a horizontal state in parallel to form a combine. It is attached to the rear of the machine body 9. A small-diameter gear 10 is mounted on one of the rotary shafts 2 and 8 on a portion of the rotary shafts 2 and 8 that protrudes outward from the machine frame 3, and a large-diameter gear 11 and a pulley 12 are mounted on the other rotary shaft 8. The small-diameter gear 10 and the large-diameter gear 11 are engaged with each other, and the belt 13 is wound around the pulley 12 between the pulley 12 and a pulley (not shown) provided in the front part of the combine machine body 9 to rotate one of them. The shaft 2 rotates at high speed and the other rotating shaft 8 rotates at low speed.

A disk receiving blade 14 and a scraping disk 15 are arranged at a predetermined interval on the rotating shaft 8 that rotates at a low speed. Further, as will be described later in detail, a disk blade 1 is arranged on the rotary shaft 2 on the high-speed side so that the peripheral edge portion thereof is sandwiched between the disk receiving blade 14 and the scraping receiving blade 15 at predetermined intervals. It is set up. The detailed structure of the rotation shaft 2 on the low speed rotation side is as shown in FIG. The rotary shaft 2 integrally connects a short shaft 4 to which a small diameter gear 10 is attached and a long shaft 5 to which the disc blade 1 is arranged.

The short shaft 4 is supported via a bearing 20 on a bearing metal 19 attached to a side plate 16 of a machine frame with a bolt 17 and a nut 18. A small-diameter gear 10 is attached to the end of the hexagonal shaft of the short shaft 4 protruding outward from the side plate 16 with a bolt 21, and a flange 22 is welded to the inner end of the side plate 16. The long shaft 5 fits the disc blade 1 between the positioning pipe 23 and the blade pressing plate 24 at predetermined intervals. A winding prevention pipe 25 is loosely fitted between the blade pressing plates 24. A flange metal 26 is fitted to the driving side end of the long shaft 5, and is attached to the long shaft 5 with a bolt 27 and a bracket 28. The flange metal 26 is attached to the flange 22 of the short shaft 4 with bolts 29. 30 is a winding prevention ring.

At the end of the driven shaft of the long shaft 5, a positioning pipe 31, a winding prevention ring 32, and a bearing sleeve 33 are attached with a nut 34, and the bearing sleeve 33 is fitted to a bearing metal 7 which is a bearing member. The bearing 36 is fitted and supported. The bearing metal 7 is rotatably attached to the attachment bracket 37 attached to the side plate 40 with the bolt 38 and the nut 39 by the support shaft 6. 41 is a retaining pin. The driven side structure of the rotating shaft 2 may be as shown in FIGS. 3 and 4. That is, the winding prevention / positioning pipe 42 and the bearing sleeve 43 are welded to the long shaft 5, and the bearing sleeve 43 is rotatably supported by the bearing 45 mounted on the bearing metal 7. The bearing metal 44 is attached to the brackets 47 and 48 on both sides, which are attached to the side plate 40 with the bolts 46, by the support shafts 6 and 6. If one support shaft 6 is removed, the bearing metal 44 is attached to the other support shaft. It comes to rotate around 6. When the disc blade 1 is replaced with the above configuration, first, the rear side plate 50 of the machine frame 3 is removed by removing the bolt 51 to form an opening.

Next, on the drive side of the rotary shaft 2, the bolt 29 is removed to remove the flange 22 of the short shaft 4 and the flange metal 26 of the long shaft 5, and the whole long shaft 5 is slid slightly to the driven side. If the flange metal 26 is taken out of the machine frame 3 through the opening around the support shaft 6 and the bolt 27 is removed to remove the flange metal 26 from the long shaft 5, the disc blade 1 is pulled out from the long shaft 5. You will be able to put it out. When the entire long shaft 5 is taken out from the machine frame 3, the support shaft 6 may be pulled out. When the exchange of the disc blade 1 is completed, the work opposite to the above may be performed and the long shaft 5 may be mounted in the machine frame 3.

[Brief description of drawings]

FIG. 1 is a plan view.

FIG. 2 is an enlarged front sectional view of the first embodiment.

FIG. 3 is a partially enlarged front sectional view of a second embodiment.

FIG. 4 is a partially enlarged side sectional view of a second embodiment.

[Explanation of symbols]

 1 Disc Blade 2 Rotating Shaft 3 Machine Frame 4 Short Shaft 5 Long Shaft 6 Support Shaft 7 Bearing Member

Claims (1)

[Scope of utility model registration request] 1. A disk cutter comprising a rotating shaft (2) having disk blades (1) arranged at a predetermined interval and horizontally mounted in a machine frame (3), and a short shaft pivotally supported by the machine frame (3). The drive side end of the rotary shaft (2) is detachably connected by (4) and the long shaft (5) provided with the disc blade (1), and is bent by the support shaft (6) orthogonal to the axial direction. The driven bearing end (7) supports the driven side end of the rotary shaft (2), and the short shaft (4) and the long shaft (5) are supported.
And then separate the long axis (5) around the spindle (6)
Of the disk cutter, characterized in that the drive side shaft end of the long shaft (5) can be made to project outward from the opening of the machine frame (3) by rotating the shaft outward. Rotating shaft support structure.