JPH067439U - Waste straw cutter - Google Patents

Abstract

(57) [Summary] [Structure] A cutting cutter 7 having a large number of disc-shaped cutting blades 11 arranged at predetermined intervals, and a large number of disc-shaped supply blades 9.
In a discharge straw cutter arranged in parallel with the supply cutter 6 arranged at a predetermined interval, and the cutting blade 11 and the supply blade 9 are arranged so as to overlap each other when viewed in the axial direction,
The rotating shaft of the cutting cutter 7 is composed of a main shaft 13 equipped with the cutting blade 11 and a pair of support shafts 14 and 15 detachably connected to both ends of the main shaft 13, and the both support shafts 14 and 15 are cutter cases. 5, the left and right side walls 5a, 5a are respectively supported, and a connecting structure 1 between both ends of the main shaft 13 and the respective support shafts 14, 15 is provided.
6 and 17 are set to the same specifications, and the main shaft 13 is reversed in direction so as to be connectable to both the support shafts 14 and 15. [Effect] By reversing the direction of the main shaft and connecting to both support shafts, the period during which the main shaft can be used without polishing can be doubled as compared with the conventional one, and the maintainability can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disk-shaped exhaust wall cutter used for combine harvesters.

[0002]

[Prior art]

 This disc-type discharge straw cutter is, for example, as disclosed in Japanese Patent Laid-Open No. 3-198716, a cutting cutter in which a large number of disc-shaped cutting blades are inserted and attached to a support shaft at predetermined intervals, and a large number of support shafts are also provided. When the cutting blade of the cutting cutter is worn, it is constructed by inserting the disc-shaped supply blades of the In order to remove the cutting cutter from the cutter case, disassemble it, remove the cutting blade that needs to be ground or replaced, attach a ground or new cutting blade to the spindle again, and then reinstall it in the cutter case. Is common. As described above, maintenance of the cutting blade requires a great deal of labor, and improvement is desired. Further, as one means for responding to such a demand, as shown in, for example, Japanese Patent Laid-Open No. 3-160924, by forming a notch in a part of the cutting blade, the cutting blade is detachably attached to the spindle from the side. It has been proposed that only some cutting blades be replaced and other cutting blades be used as they are.

[0003]

[Problems to be solved by the device]

 According to the above-mentioned proposed means, only a part of the cutting blade can be replaced, so that the cutting blade can be effectively used and the replacement work of the cutting blade can be simplified and facilitated. Since a notch for attachment and detachment is formed, there is a problem in strength, and in order to compensate for this, it is necessary to separately equip each spindle with a disc for attachment to the spindle, which complicates the structure. At the same time, it was expensive, and there was a practical difficulty here. The present invention has been made in view of the above circumstances, and provides a discharge straw cutter capable of improving the maintainability by effectively utilizing the cutting blade, focusing on the wear tendency of the cutting cutter. The purpose is to

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is characterized in that, in the discharge straw cutter described at the beginning, the rotary shaft of the cutting cutter is a spindle equipped with a cutting blade, and a pair of supports detachably connected to both ends thereof. It is composed of a shaft, and both spindles are supported on the left and right side walls of the cutter case respectively, and the connection structure between the both ends of the spindle and each spindle is set to the same specifications, and the spindle is turned upside down for both spindles. The point is that they are connectable.

[0005]

[Action]

 According to the above configuration, by setting the connection structure between both ends of the spindle and each spindle to the same specifications, if the cutting blade on the stocker side wears and the sharpness deteriorates, remove the spindle of the cutting cutter from both spindles. , With the spindle direction reversed, connect both ends of the spindle again to both spindles, and replace the root side with the tip side to replace the tip side with a cutting edge with less wear on the tip side. It is possible to smoothly shred threshing waste straw. Also, the tip side was replaced with a cutting blade on the side of the stock that had become worn, but the tip of the threshing-discharging and discharging straw had very little sticking of mud, etc., and had little rigidity, so it was fine. Can be refused. After that, if the cutting blade on the stocker side is worn out, the whole is removed and polished, or the cutting blade is replaced.

[0006]

[Effect of device]

 As is clear from the above description, in the present invention, the main shaft can be turned over and connected to both support shafts, so that the period without polishing can be doubled and the maintainability can be improved. I was able to do it.

[0007]

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a combine equipped with a discharge straw cutter according to the present invention. This waste straw cutter 1 is provided at the rear part of the threshing device 2, and cuts the threshing discharge straw carried by the feed chain 3 and carried out of the threshing device 2 into a horizontal posture. The case 5 is provided with a supply cutter 6 and a cutting cutter 7, which are supported in parallel on the left and right side walls 5a, 5a and are rotationally driven inwardly toward each other. As shown in FIG. 1, the supply cutter 6 has a large number of supply blades 9 and spacers 10 alternately inserted into a drive shaft 8 composed of a hexagonal shaft supported by bearings on the left and right side walls 5a and 5b. Configured. The rotating shaft of the cutting cutter 7 is supported on a main shaft 13 in which a large number of cutting blades 11 that overlap with the supply blade 9 when viewed in the axial direction are mounted in parallel via a spacer 12, and a left side wall 5 a of the cutter case 5. The left support shaft 14 and the right support shaft 15 rotatably supported on the right side wall 5b of the cutter case 5, and the main shaft 13 and the both support shafts 14 and 15 are opposed to each other at their opposite ends. The left and right flange-shaped connecting structures 16 and 17 of the same shape are provided so that the main shaft 13 can be attached to and detached from the support shafts 14 and 15 by bolt operation. Therefore, the main shaft 15 can be reversely connected to both the support shafts 14 and 15 via the both mounting structures 16 and 17. The left support shaft 14 of the cutting cutter 7 serves as an input shaft of this exhaust wall cutter, and the power transmitted by the belt from a transmission mechanism (not shown) is decelerated and transmitted to the supply cutter 6 via gears 18 and 19. .

The connecting structures 16 and 17 may be any structures other than the structures of the above-mentioned embodiments, and various structures such as a pin connecting structure and a spline connecting structure can be selected.

Further, although reference numerals are given in the claims of the utility model for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view in which a part of a discharge straw cutter according to the present invention is cut away.

FIG. 2 is a side view of a combine equipped with a discharge straw cutter.

[Explanation of symbols]

 5 Cutter Case 5a, 5b Cutter Case Side Wall 6 Supply Cutter 7 Cutting Cutter 9 Supply Blade 11 Cutting Blade 13 Main Spindle 14,15 Spindle 16,17 Connection Structure

Claims (1)

[Scope of utility model registration request] 1. A cutting cutter (7) having a large number of disc-shaped cutting blades (11) arranged at a predetermined interval, and a supply cutter (7) having a large number of disc-shaped supply blades (9) arranged at a predetermined interval. 6) is a parallel state, and the cutting blade (11) and the supply blade (9) are arranged side by side in an arrangement state in which they overlap with each other when viewed in the axial direction. A spindle (13) equipped with a cutting blade (11) and a pair of spindles (14), (15) detachably connected to both ends of the spindle (13).
(15) the left and right side walls (5a) of the cutter case (5),
(5a) are respectively supported, and the connecting structures (16), (1) between the both ends of the main shaft (13) and the respective support shafts (14), (15) are supported.
7) With the same specifications, the main shaft (13) is turned upside down so as to be connectable to both support shafts (14) and (15).