JP4955151B2 - Exhaust cutting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a configuration of a cutter (a waste cutting device) disposed at the rear part of a combine, and more particularly to a technique for achieving compactness while maintaining the performance of the cutter.
[0002]
[Prior art]
The conventional combine cutting and cutting device is provided with a high-speed shaft for cutting and a low-speed shaft in parallel in the left-right direction, and a spiral blade shaft for diffusion or discharge, and is formed in a disk shape on each of the high-speed shaft and the low-speed shaft. The rotary blades are arranged at regular intervals, the spiral blade shaft is disposed below the spiral blade shaft, the spiral blade is disposed on the spiral blade shaft, and the tip of the rotary blade on the high speed shaft and the rotary blade on the low speed shaft are arranged. Arrangement was made so as to partially overlap in a side view, and the waste was cut between the rotated high-speed shaft and low-speed shaft so that the waste was cut by the rotary blade. A technique is known in which the waste after cutting falls on the axis of the spiral blade and is diffused on the field scene by the rotation of the spiral blade or brought to one side. For example, this is the technique disclosed in Japanese Utility Model Publication No. 4-48671 .
[0003]
[Problems to be solved by the invention]
However, in the conventional configuration, the high-speed axis, the low-speed axis, and the spiral blade axis are arranged in parallel, and the axis is arranged in a triangular shape in a side view, so there is a certain amount of space in the rear part of the main body of the combine. Necessary. Further, since each requires a driving force, a drive transmission gear or pulley is disposed on one side of each shaft, and a space for storing these is also required on the side surface. These spaces were a challenge when trying to reduce the size of the combine.
[0004]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0005]
In Claim 1, a high-speed cutter shaft (11) and a low-speed cutter shaft (12) are arranged in parallel, a plurality of high-speed rotary blades (21) are fixed on the high-speed cutter shaft (11), and the low-speed cutter shaft (12) A waste cutting device (1) that fixes a plurality of low-speed rotary blades (13) on the top and inserts waste between the high-speed rotary blade (21) and the low-speed rotary blade (13) facing each other. ) , The adjusting tube (22) is fitted between the rotary blades (21, 21 ) on at least one cutter shaft (11, 12) , and the spiral blade (23) is placed on the outer periphery of the adjusting tube (22). ) And the angle of the spiral blade (23) when the blade ends (23a, 23b) on both sides located in the vicinity of the rotary blade (21) intersect the outer peripheral surface of the adjustment tube (22) is , rather than radial, which was formed to have a slant direction in a side view and a front view A.
[0006]
According to a second aspect of the present invention, in the waste cutting apparatus according to the first aspect, the distance between the rotary blades and the rotary blades on the one cutter shaft (11, 12) is set in the conveying direction by the spiral blade (23). The downstream space (L2) is narrower than the upstream space (L1).
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The problems and means to be solved by the present invention are as described above. Next, an embodiment of the present invention shown in the accompanying drawings will be described.
[0008]
FIG. 1 is a front view of a waste cutting apparatus according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is an exploded plan view of a mounting portion of a low-speed cutter shaft, and FIG. 5 is a side view, FIG. 6 is a side view showing opening and closing of the switching cover, and FIG. 7 is a plan view of the combine showing the attachment position and the discharge position of the waste cutting apparatus.
[0009]
1 and 2, the configuration of the exclusion cutting device 1 will be described. The severing and cutting apparatus 1 is disposed on the subsequent process side of the combine threshing apparatus, and is generally disposed in the rear part of the machine body. After the threshing, the waste is transported from the waste chain 2 to the waste cutting device 1 where it is cut and released onto the field scene. On the rear part of the left and right cutter side plates 10L and 10R at the rear of the machine body, fulcrum shafts 3 and 3 arranged on both sides of the switching cover 4 are pivotally supported, and an operation arm is fixed to one end of the fulcrum shaft 3 to By rotating an operation lever disposed in the vicinity, the switching cover 4 is rotated so that cutting and non-cutting of the waste can be switched.
[0010]
That is, in FIGS. 2 and 6, a switching stopper 31 is provided on one side or both sides of the fulcrum shaft 3 of the switching cover 4, and the switching stopper 31 is provided with recesses 31a and 31b, and the recesses 31a and 31b. The roller 32 a of the biasing arm 32 is disposed so as to be able to contact the biasing arm 32, and the biasing arm 32 is biased by a spring 33. The switching cover 4 is fixed to the tip of the switching stopper 31 by a knob bolt 34, and the stopper 31 is pivotally supported on the fulcrum shaft 3. Reference numeral 35 denotes a handle. Reference numeral 36 is a detection means comprising a switch or the like. The detection means 36 is provided in the switching stopper 31 and operates when there is a gap between the switching stopper 31 and the switching cover 4 regardless of whether it is working or not. I try to stop. Therefore, when the knob bolt 34 is loosened when the switching cover 4 is rotated rearward or during maintenance or the like, the detecting means 36 is activated to stop the engine, so that the work can be performed safely.
[0011]
In such a configuration, as shown in FIG. 6, the state in which the switching cover 4 is rotated forward and the upper portion of the waste cutting device 1 is closed is the non-cutting position, and the roller 32a is fitted in the recess 31a. The position is maintained, and the waste is slid back on the switching cover 4 and falls onto the field from the rear end without being cut. Further, when the switching cover 4 is rotated in the vertical direction (position 4 ′), the roller 32a is stopped at the position where the roller 32a is fitted in the recess 31b, and the position is maintained, and the upper portion of the waste cutting apparatus 1 is opened. Becomes the cutting position, and the waste conveyed by the waste chain 2 is dropped and cut between a high-speed cutter shaft 11 and a low-speed cutter shaft 12 which will be described later. When the knob bolt 34 is removed, the switching cover 4 is not restricted by the switching stopper 31 and can be rotated rearwardly as indicated by 4 ″, and the upper portion of the waste cutting device 1 is completely opened. Thus, maintenance, cleaning, etc. can be easily performed, and the detection means 36 is turned on to stop the engine, and the drive of the evacuation / cutting device 1 is also stopped so that maintenance can be performed safely. However, the detection means 36 may be configured to disconnect the drive clutch of the rejection cutting apparatus 1.
[0012]
Between the left and right cutter side plates 10L and 10R, a high-speed cutter shaft 11 and a low-speed cutter shaft 12 are horizontally and horizontally mounted through bearings so that the low-speed cutter shaft 12 is higher than the high-speed cutter shaft 11. Thus, the low-speed cutter shaft 12 is arranged in parallel to the rear (position away from the waste chain 2) than the high-speed cutter shaft 11. However, the position of the low-speed cutter shaft 12 is higher than the high-speed cutter shaft 11, and the position of the low-speed rotary blade 13 and the high-speed rotary blade 21 to be described later are not limited to the positions shown in FIG.
[0013]
On the low-speed cutter shaft 12 between the left and right cutter side plates 10L and 10R, a plurality of disk-shaped low-speed rotary blades 13, 13. In order to set the interval between the low-speed rotary blade 13 and the low-speed rotary blade 13, adjusting tubes 19, 19 ′ are arranged on the low-speed cutter shaft 12 between the low-speed rotary blade 13 and the low-speed rotary blade 13. The distance between the low-speed rotary blade 13 and the low-speed rotary blade 13, that is, the length of the adjustment tube 19, is L1> L2 where L1 is the length of the left adjustment tube 19 and L2 is the length of the right adjustment tube 19 ′. It is said. In other words, the discharge direction is indicated by the arrow A, and the interval on the discharge side becomes narrower. In this embodiment, two types of adjustment pipes 19 and 19 ′ are used in consideration of the production cost of the parts. However, the adjustment pipe 19 is made of an adjustment pipe having a different length, and the discharge side is It can also be configured to gradually shorten.
[0014]
Further, a pipe 15 having a discharge blade 14 fixed thereto is fixed to one end of the low-speed cutter shaft 12, and screw holes 14a, 14a,... Are opened on the blade 14 as shown in FIG. A notch 14b is provided between the outer periphery of the pipe 15 on the side. On the other hand, a bearing 16 for rotatably supporting one end of the low-speed cutter shaft 12 is provided on the cutter side plate 10R, and a fitting portion 16a for externally fitting the end of the pipe 15 is provided on the rotatable side of the bearing 16. And a blade 16b that matches the size and position of the blade 14 is provided. The blade 16b is provided with a long hole 16c in accordance with the position of the screw hole 14a. The long hole 16c and the screw hole 14a are aligned with each other. Then, the bolt 20 is passed through and tightened with a nut so that both can be fixed. A pipe 17 is fixed to the other end of the low-speed cutter shaft 12 on the other side, and the pipe 17 can be fitted to a bearing 18 attached to the cutter side plate 10L.
[0015]
With this configuration, when the low-speed cutter shaft 12 is removed, the bolt 20 penetrating the long hole 16c and the screw hole 14a is removed, and the low-speed cutter shaft 12 is slid to the right side (bearing 16 side), thereby reducing the low-speed cutter shaft. The pipe 17 on the left side of the shaft 12 is disengaged from the bearing 18, and the pipe 15 on the right side of the low speed cutter shaft 12 is removed from the fitting portion 16 a of the bearing 16, so that the low speed cutter shaft 12 can be removed.
[0016]
On the contrary, when mounting, the pipe 15 on the right side of the low-speed cutter shaft 12 is inserted into the fitting portion 16a of the bearing 16, and then the pipe 17 on the left side of the low-speed cutter shaft 12 is fitted into the bearing 18, After the positions of 16c and the screw hole 14a are aligned, the nut can be tightened and fixed through the bolt 20. In this way, the low-speed cutter shaft 12 can be easily attached and detached to facilitate maintenance. By loosening the bolt 20, the low-speed cutter shaft 12 can slide by the length of the long hole 16c, and the long hole 16c can adjust the distance between the low-speed rotary blade 13 and a high-speed rotary blade 21 described later. Yes.
[0017]
A plurality of high-speed rotary blades 21, 21... Are arranged in parallel at a predetermined interval on the high-speed cutter shaft 11, and when viewed from the side, as shown in FIG. .. Are arranged between the high-speed rotary blade 21 and the high-speed rotary blade 21, and the adjustment tubes 22, 22 ′, etc. are arranged between the high-speed rotary blade 21 and the intervals as described above. Yes. The lengths of the adjusting pipes 22 and 22 'are the same as the adjusting pipes 19 and 19' disposed on the opposed low-speed cutter shaft 12, and the gap is adjusted between the low-speed rotary blade 13 and the high-speed rotary blade 21. Is also kept constant. Therefore, the length of the adjustment pipe 22 is also made shorter as the discharge side. In FIG. 1, the left side is set to the tip side and the right side is set to the stock side, and the cutting length of the waste is set to be long on the tip side and short on the stock side.
[0018]
.. Are fixed on the outer circumferences of the adjusting tubes 22, 22 ′, and the cutting rod is conveyed to the discharge side by the rotation of the high-speed cutter shaft 11. . The length in the radial direction at the center of the right and left of the spiral blades 23, 23 ′ is longer than the length in the radial direction of the high-speed rotary blade 21.
[0019]
4 and 5, the spiral blade 23 (23 ') cuts blade end portions 23a and 23b on both sides located in the vicinity of the high-speed rotary blade 21 obliquely. In other words, when the spiral blade 23 is cut along a plane perpendicular to the axial direction, the blade end portion is directed in the radial direction as shown by the two-dot chain line in FIGS. It is located in the way of cutting, and the taking-in is worsened, and the efficiency of cutting and transporting is reduced, or clogging is caused. Therefore, the angle when the end surface of the spiral blade 23 intersects the outer peripheral surface of the adjustment tube 22 is formed to be an oblique direction in the side view and the front view, not in the radial direction. However, the length in the radial direction of the spiral blades 23, 23 ′ can be gradually shortened from the left and right central portions so as to coincide with the outer circumferences of the adjustment tubes 22, 22 ′ at both ends.
[0020]
By configuring in this way, a V-shaped space can be formed between the blade end 23a of the spiral blade 23 on the upstream side of the conveyance and the low-speed rotary blade 13, and the waste can be easily taken into this space. Cutting can be done reliably. In addition, since a V-shaped space is formed between the blade end portion 23b on the downstream side of the conveyance and the high-speed rotary blade 21, clogging does not occur. However, the spiral blades 23 and 23 ′ can be arranged on the low-speed cutter shaft 12. Moreover, the left-right position of the low-speed rotary blade 13 and the high-speed rotary blade 21 can also be arrange | positioned reversely. The discharge blade 24 is fixed to the discharge side of the high-speed cutter shaft 11, and the discharge port 8 is formed below the discharge blade 24. As shown in FIG. 2, the lower outer periphery of the tip of the spiral blade 23 other than the discharge port 8 and the lower part of the low-speed rotary blade 13 are covered with a casing 27.
[0021]
An input sprocket (or pulley) 30 is fixed to the end of the high-speed cutter shaft 11 outside the cutter side plate 10R so that power is transmitted from the drive source (engine) via the chain (or belt). Yes. The gears 25 and 26 are respectively fixed on the high-speed cutter shaft 11 and the low-speed cutter shaft 12 outside the other cutter side plate 10L, and arranged so as to mesh with each other, so that the high-speed cutter shaft 11 and the low-speed cutter shaft 12 are As shown by the arrows, they are configured to rotate in opposite directions.
[0022]
In such a configuration, the power from the engine is transmitted to the input sprocket 30 to rotationally drive the high-speed cutter shaft 11, and at the same time, the low-speed cutter shaft 12 is driven from the high-speed cutter shaft 11 through the gears 25 and 26. . The high speed cutter shaft 11 and the low speed cutter shaft 12 are rotated to rotate the high speed rotary blades 21, 21... And the low speed rotary blades 13, 13. It falls between the shaft 11 and the low-speed cutter shaft 12, and is cut by the high-speed rotary blades 21, 21. The cutting length of the waste is cut long on the upstream side in the transport direction and short on the downstream outlet 8 side.
[0023]
The cut waste is transported along the casing 27 to the discharge port 8 side by the rotation of the spiral blades 23, 23... Larger than the outer diameter of the high-speed rotary blade 21. At the time of this conveyance, the waste having a long cutting length is cut again in the middle of reaching the discharge port 8, and is further shortened to be almost the same as the length of the short cut waste on the discharge port 8 side. Thus, in the present invention, the number of rotating blades can be reduced as compared with the number of conventional rotating blades. When the waste reaches the discharge port 8, the blades 14 and 16 b and the discharge blade 24 are rotated and discharged to the field.
[0024]
As shown in FIG. 7, in the above-described pulverizing and cutting device 1, the combiner 5 is disposed at the rear of the machine body, and the discharge port 8 is on the left side. By changing, the waste cutting device 1 can be arranged on the right side of the machine body as 1 '. Further, by reversing the winding direction of the spiral blades 23, 23 ′, the spiral blades 23, 23 ′ can be discharged in opposite directions, and can be on the right side like the discharge port 8 ′. In addition, a waste cutting device can be mounted on the left side as in 1 ". Further, by setting the winding direction of the spiral blades 23 and 23 'on the cutter shaft to be opposite to the left and right, it is in the center as in 8". It can also be configured to discharge, or can be configured to discharge to both sides.
[0025]
【Effect of the invention】
Since the present invention is configured as described above, the following effects can be obtained.
The high-speed cutter shaft (11) and the low-speed cutter shaft (12) are arranged in parallel, and a plurality of high-speed rotary blades (21) are fixed on the high-speed cutter shaft (11). A waste cutting device (1) which fixes a plurality of low-speed rotary blades (13) on the shaft (12) and inserts waste between the high-speed rotary blade (21) and the low-speed rotary blade (13) facing each other. 1), an adjusting tube (22) is fitted between the rotary blades (21, 21 ) on at least one cutter shaft (11, 12) , and a spiral blade ( 23) is fixed, it is possible to simultaneously perform cutting of the waste and transport of the cutting waste, omitting the shaft provided with the spiral blade for transport, and making the waste cutting device compact. it can.
[0026]
The angle of the spiral blade (23) when the blade ends (23a, 23b) on both sides located in the vicinity of the rotary blade (21) intersect with the outer peripheral surface of the adjustment tube (22) is radial. Rather than being formed in an oblique direction in the side view and the front view, the waste that is cut and transported between the rotary blade and the spiral blade is not clogged, and the spiral blade obstructs the cutting of the waste. Without having to do so, it will be possible to cut the excretion reliably. Further, the waste can be easily taken into the rotary blade side, and the waste can be reliably cut.
[0027]
According to a second aspect of the present invention, in the waste cutting apparatus according to the first aspect, the distance between each rotary blade and the rotary blade on the one cutter shaft (11, 12) is conveyed by the spiral blade (23). Since the downstream interval (L2) is configured to be narrower than the upstream interval (L1) in the direction, the waste cut on the upstream side is cut again during the conveyance to the downstream side. When reaching the outlet, the cutting length is substantially uniform. Therefore, the number of rotary blades can be reduced and costs can be reduced as compared with the conventional configuration in which the rotary blades are arranged at regular intervals.
[Brief description of the drawings]
FIG. 1 is a front view of a waste cutting apparatus according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is an exploded plan view of a mounting portion of a low-speed cutter shaft.
FIG. 4 is a front view of an adjustment tube to which a spiral blade is attached.
FIG. 5 is a side view of the same.
FIG. 6 is a side view showing opening and closing of the switching cover.
FIG. 7 is a plan view of the combine showing the attachment position and the discharge position of the waste cutting apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waste cutting device 11 High speed cutter shaft 12 Low speed cutter shaft 13 Low speed rotary blade 21 High speed rotary blade 23 Spiral blade

Claims (2)

A high-speed cutter shaft (11) and a low-speed cutter shaft (12) are arranged in parallel, a plurality of high-speed rotary blades (21) are fixed on the high-speed cutter shaft (11), and a plurality of pieces are arranged on the low-speed cutter shaft (12). In the waste cutting apparatus (1) for fixing the low-speed rotary blade (13) and inserting the waste between the opposing high-speed rotary blade (21) and the low-speed rotary blade (13) for cutting, The adjusting tube (22) is fitted between the rotary blades (21, 21 ) on the cutter shaft (11, 12) , and the spiral blade (23) is fixed on the outer periphery of the adjusting tube (22). In the spiral blade (23), the angle when the blade ends (23a, 23b) on both sides located in the vicinity of the rotary blade (21) intersect the outer peripheral surface of the adjustment tube (22) is not in the radial direction, Straw Discharge cut, characterized in that was formed to have an oblique direction in a side view and a front view Location. 2. The waste cutting apparatus according to claim 1, wherein an interval between each rotary blade and the rotary blade on the one cutter shaft (11, 12) is an upstream interval in a conveying direction by the spiral blade (23). A waste cutting device characterized in that the interval (L2) on the downstream side of (L1) is narrower.

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