JP4781250B2 - Cutting blade of bean cutting device - Google Patents

Description

  The present invention relates to a bean cutting device for harvesting and harvesting bean stems and leaves, and more particularly to a cutting blade for cutting bean stems and leaves.

  When harvesting beans such as edamame, first the stalks and leaves that are vegetated in the field are pulled out together with the beans, and then the stems and leaves are gathered and transported to the work place. It is generally done.

Extraction work of bean stems and leaves is a heavy labor and is performed using a dedicated reaper. Patent Document 1 discloses such a bean reaper.
Since the bean pods are attached to the roots of the beans until the roots, the reaper described in Patent Document 1 is formed so that the front part of the cutting blade advances in the soil and cuts the leaves in the soil. It is configured to harvest all the bean paste. Conventionally, the cutting blade has been formed so as to advance from a top surface of the ridge to a shallow position having a depth of about 1 cm to 3 cm.

  The harvested stems and leaves are crushed by holding the roots using a stripper. At this time, if the stems and leaves are cut at a shallow position from the top surface of the pods, the roots of the stems and leaves are short. There was a problem that the removal work was difficult.

However, if the cutting blade is formed so as to advance deep from the top surface of the reed in order to secure the roots of the foliage sufficiently long, it will push away a large amount of soil with the cutting blade. As a result, a load is applied, and the cutting blade is likely to be worn out, and the rotating shaft may be fatigued and broken. In addition, when the cutting blade advances in the soil, not only the dredged soil adheres to the upper surface thereof but also grass and roots may be entangled, impairing workability.
JP 2002-253029 A

  In the harvest of beans, the root cutting blade advances the desired depth from the top surface of the cocoon and cuts the stems and leaves of the beans in the soil, and also prevents the consumption of the root cutting blade and the wear of the rotating shaft. To do.

In order to solve the above-mentioned problem, in the invention according to claim 1, in the bean cutting device that sequentially cuts and harvests the root of the bean stalk while moving forward, the root cutting blade having a saw blade on the outer periphery of the disk is provided. , connected to a high inclination to the rotation axis of the rear lower the traveling direction front side of the disc with respect to the horizontal direction, the collision Detai provided on the upper surface of the root cutting blade, securing the root cutting blade on the rotary shaft The presser washer is formed in a non-circular shape, and the protruding body is constituted by a convex corner portion of the presser washer.
According to a second aspect of the invention, to place the transmission shaft for transmitting the power of an engine on a lower surface side of the front ram the cutting blade, characterized in that the concatenation of the rotary shaft to the tip portion of the transmission shaft.

According to the first aspect of the invention, the upper surface of the disk-shaped root cutting blade which is inclined to the rear high low traveling direction front side, by providing the collision Detai, the projecting member is the upper surface of the underlying cutting blade As the dredged soil is spun off to the side as it rotates, the root cutting blade advances deep inside the straw and cuts the stems and leaves of the beans at a deep position, ensuring the necessary length of root. In addition, the load on the root cutting blade due to the clay can be reduced, and consumption of the root cutting blade can be suppressed while ensuring the efficiency of the subsequent work. Furthermore, no clay is attached to the upper surface of the root cutting blade, and wrapping of grass or the like can be prevented. Further, the pressing washer to secure the roots present cutting blade on the rotary shaft is formed in a non-circular shape, by the convex corners of the presser washer and the projecting member, to form a projecting member with a simple configuration, after It is possible to achieve the object that the consumption of the basic cutting blade can be suppressed while ensuring the efficiency of the work.
According to the second aspect of the present invention, by a transmission shaft for transmitting power of the engine is disposed on the lower surface side of the root the cutting blade, by concatenating the rotary shaft to the tip portion of the transmission shaft, root cutting blade In addition to improving the design flexibility of the protrusions formed on the upper surface of the steel, the rotating shaft can be shortened to reduce the bending moment applied to the shaft, and the consumption of the rotating shaft can be suppressed. Tangles such as grass can be suppressed.

Hereinafter, a bean cutting apparatus according to the present invention will be described with reference to FIGS. 1 to 5.
First, with reference to FIG.1 and FIG.2, the whole structure of the bean cutting apparatus which concerns on this invention is demonstrated. FIG. 1 is an overall perspective view of a bean cutting apparatus according to the present invention. FIG. 2 is a side view of the bean cutting device according to the present invention, and the illustration of the engine 11 and the operation panel 12 is omitted.

  The bean cutting device is provided with an engine 11 on the right side of the machine body 1 having a pair of left and right crawlers 10, an operation panel 12 and a riding board 13 on the left side, and a foliage stacking table 14 on the rear part of the machine body, Further, a cutting and conveying device 2 is mounted on the front of the machine body 1. The crawlers 10 and 10 and the cutting and conveying device 2 are driven by the engine 10.

  The crawlers 10 and 10 are each formed in a width that can travel between the ridges, and are arranged on the left and right sides at a distance straddling a single ridge, and are formed on a triangular crawler with a leg height to increase the vehicle height of the body 1 and to cut the beans The device is configured to be able to travel across the fence.

  The operation panel 12 is provided above the rear part of the crawler 10 on the right side of the machine body. The operation panel 12 is installed at a height of about a chest position or a line-of-sight position of an operator standing in the furrow, that is, at a height of about a few hundred centimeters. For example, it is provided at a height of about 140 cm to 160 cm. In addition, a passenger board 13 on which an operator boardes is provided below the operation panel 12 and behind the crawler 10. The passenger stand 13 is installed at a height of about several tens of cm, for example, about 20 cm to 40 cm.

  The operator can get on the riding board 13 and operate the bean cutting device with the operation panel 12, or can operate the operation panel 12 while walking along the traveling bean cutting device. Is highly versatile, and it is possible to realize a work mode suitable for the actual situation of each worker.

  The cutting and conveying device 2 includes a conveying unit 3 that conveys the cut leaves and leaves to the foliage stacking table 14 at the rear of the machine body, a cutting unit 4 that includes a cutting blade that cuts and cuts the roots of the stems and leaves of the vegetation that grows on the straw, It is comprised by the cutting height control part 5 which controls the working position of the part 3 and the cutting part 4. FIG. The cutting and conveying apparatus 2 is mounted on the front of the machine body 1 with the front side in the traveling direction being low and the rear side being inclined high, and the foliage stacking table 14 is disposed below the rear end of the cutting and conveying apparatus 2.

  The conveyance unit 3 is configured by arranging a conveyance machine in which a conveyance claw 34 is attached to a pair of left and right rotation chains in two upper and lower stages. The conveying claw 34 is attached to the rotating chain with the upper conveying machine 30 having a larger interval and the lower conveying machine 31 having a smaller interval.

  The upper and lower conveyors 30 and 31 are arranged in parallel in the vertical direction with the front side in the traveling direction being low and the rear side being inclined high. The upper conveyor 30 is formed to be longer than the lower conveyor 31 and protrudes forward, and the front ends of both conveyors 30 and 31 are configured to travel directly above the top surface of the basket. .

  The power of the engine 11 is transmitted to the transporters 30 and 31 via a horizontal drive shaft 15 provided in the left-right direction of the machine body 1 and a drive shaft 16 orthogonal to the horizontal drive shaft 15. At this time, the rotation speed of the rotation chain of the upper conveyor is configured to be higher than the rotation speed of the lower conveyor. The transport unit 3 is configured to be swingable about a horizontal drive shaft 15 while defining a lower limit of the front end by a hydraulic pump (not shown).

  In addition, a weed basket 32 is attached to the front part of the upper transfer machine 30. Guide rods 33 and 33 are attached to the rear portions of the upper and lower transporters 30 and 31, respectively, for guiding the transported foliage so that the foliage is discharged to the foliage stacking table 14 in a certain direction.

  The mowing unit 4 includes a transmission shaft 40 extending obliquely downward toward the front side in the advancing direction from the body 1 to a position directly above the top surface of the ridge, a rotating shaft 41 extending downward from the tip of the transmission shaft 40, and the rotation It comprises a root cutting blade 42 attached to the shaft 41.

  The transmission shaft 40 has a rear end connected to the horizontal drive shaft 15, and transmits power of the engine from the horizontal drive shaft 15 to the rotary shaft 41 at the tip, and is configured to be swingable about the horizontal drive shaft 15. Further, a connecting plate 45 for connecting to the cutting height control unit 5 is provided in the middle of the transmission shaft 40.

  The rotating shaft 41 extends downward from the tip of the transmission shaft 40 at a right angle to the transmission shaft 40. A root cutting blade 42 is attached to the lower end of the rotating shaft 41. The root cutting blade 42 is attached to the rotary shaft 41 with the front side in the traveling direction being low and the rear side being inclined high.

  The cutting height control unit 5 includes a gauge wheel 50 that rolls between the ribs, and a fan-shaped adjustment plate 51 that adjusts the height position of the cutting unit 4 with respect to the gauge wheel 50. The adjustment plate 51 has a large number of through holes 52 for connection to the connection plate 45. The through hole 52 is selected, and the cutting height of the cutting unit 4 is adjusted.

  Next, the cutting blade according to the present invention will be described with reference to FIG. FIG. 3 is an enlarged view of the cutting blade body.

The root cutting blade 42 has a disk shape and a saw-like blade is formed on the outer periphery. On the upper surface of the root cutting blade 42, protrusions 43 that radially extend from the center of rotation of the root cutting blade 42 are provided as protrusions to form a cutting blade body.
In the illustrated example, the protrusion is formed by providing three protrusions 43, 43, 43 at equal intervals on the upper surface of the root cutting blade 42.

  The protrusion 43 is formed at a height (for example, 1 cm to 3 cm) that does not collide with the rotating shaft 41. On the other hand, if the height is too low, the dredged material cannot be sufficiently splashed, so that the height of the protrusion 43 is at least 0.5 cm. Preferably, it is formed to have a thickness of about 1 cm to 2 cm.

  On the other hand, if the ridge 43 is too short, a sufficient amount of dredged material cannot be spattered, while if it is too long, the foremost end of the ridge 43 protrudes beyond the saw blade-like outer periphery of the root cutting blade 42 and the stems of beans. Therefore, it may be formed to have a length of about 0.3 to 0.8 times the radius of the root cutting blade 42. More preferably, it should be formed 0.4 to 0.7 times.

  In the illustrated example, the three protrusions 43 are formed radially, but one, two, or four or more protrusions may be provided radially on the upper surface of the root cutting blade 42.

Next, the working mode of this bean cutting device will be described.
First, the cutting work height is adjusted by the cutting height control unit 5. First, the through hole 52 is selected to adjust the connection position between the adjustment plate 51 and the connection plate 45, thereby defining the lower end position of the working height of the root cutting blade 42. And the inclination of the conveyance part 3 is changed with a hydraulic pump, and it adjusts so that the front-end part of the conveyance part 3 may be just above a ridge top surface.

  The working height is adjusted so that the front end of the root cutting blade 42 advances a depth of about several centimeters to 20 centimeters from the top surface of the ridge. This working height can also be determined appropriately beyond the above range depending on the dredging height of the dredged soil brought close to the root of the bean stem and leaves.

  After adjusting the working height, the bean cutting device straddling the straw is advanced. The stems and leaves of the cocoon over which the bean cutting device straddles are drawn to the transporters 30 and 31 by the weed culm 32, and the foliage is sequentially cut by the root cutting blade 42 that travels deeper than the top surface of the pod. The cut foliage is transported to the rear part of the machine body 1 by the transporters 30 and 31.

  The transporters 30 and 31 are such that the upper transporter 30 has a higher transport speed than the lower transporter 31, and the upper leaves of the foliage are pulled back backwards rather than the lower roots. It is conveyed to the rear part. From the conveyors 30 and 31, the stems and leaves are discharged to the foliage stacking table 14 in a fixed direction by the rear guide rod 33, and the foliage is accumulated in a state where the directions of the root side and the leaf side are aligned.

The bean cutting device configured as described above has the following effects.
By forming the ridges 43 radially on the upper surface of the root cutting blade 42, the ridges 43 can cause the clay to jump to the side, and the root cutting blade 42 advances deep from the top surface of the ridge. However, since the clay does not fall on the upper surface of the root cutting blade 42 and the load on the root cutting blade 42 and the rotating shaft 41 can be reduced, the consumption of the root cutting blade 42 and the fatigue of the rotating shaft 41 are suppressed. In addition, since the roots of the stems and leaves to be cut can be secured for a long time, it is possible to improve the working efficiency of the mashing operation of the soybean cake.

  Further, since the root cutting blade 42 is attached to the lower side of the transmission shaft 40, the horizontal direction of the root cutting blade 42 can be obtained even when the front side portion of the root cutting blade 42 is disposed at a sufficiently deep position from the top surface of the ridge. Can reduce the inclination angle from the bottom, reduce the component perpendicular to the blade surface of the resistance force received by the base cutting blade 62 from the clay, reduce the bending moment applied to the rotating shaft 61, and reduce the burden on the rotating shaft 61. Can be reduced.

  Further, since the transmission shaft 40 is on the upper side of the root cutting blade, the maintenance work of the transmission shaft 40 and the rotary shaft 41 can be easily performed.

  Next, 2nd Embodiment of a cutting blade body is described with reference to FIG.4 and FIG.5. FIG. 4 is a side view showing a second embodiment of the cutting blade body, and FIG. 5 is an enlarged perspective view of a main part of the cutting portion 6.

  The cutting blade body of the present embodiment extends a rotating shaft 61 upward from the tip end of the transmission shaft 60 connected to the horizontal drive shaft 15, and a root cutting blade via a press washer 63 on the tip end of the rotating shaft 61. 62 is attached and formed. The presser washer 63 is formed in a square shape as shown in FIG. The four corners of the presser washer 63 become protrusions as convex corner portions 64, respectively.

  In the illustrated example, the presser washer 63 is formed in a square shape, but may be any noncircular shape such as a triangular shape or a polygonal shape having five or more corners. Alternatively, the presser washer 63 may be formed in a circular shape and a protrusion may be formed around the presser washer 63.

  By configuring as in the present embodiment, the transmission shaft 40 comes to the lower side of the root cutting blade 62, so that the projecting body does not collide with the transmission shaft 40 even if the rotation shaft 61 is formed short. The degree is improved, and the dredged soil can be effectively jumped to the side, and the roots of the foliage are cut deep from the top surface of the reed to ensure a sufficient length, so Work efficiency can be improved.

  Furthermore, since the rotary shaft 61 can be formed short, the bending moment applied to the rotary shaft 61 can be significantly reduced by the resistance force received from the clay by the root cutting blade 62 that travels deep from the top surface of the rod. The burden on the shaft 61 can be reduced.

1 is an overall perspective view of a bean cutting device according to the present invention. It is a side view of the cutting and conveying apparatus of the bean cutting apparatus. It is a principal part expansion perspective view of the cutting part of a cutting conveyance apparatus. It is a side view which shows another embodiment of a cutting part. It is a principal part expansion perspective view which shows another embodiment of a cutting part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine body 2 Cutting and conveying apparatus 3 Conveying part 4 Cutting part 40 Transmission shaft 41 Rotating shaft 42 Root cutting blade 43 Projection 44 Connecting plate 5 Cutting height control unit 6 Cutting part 60 Transmission shaft 61 Rotating shaft 62 Root cutting blade 63 Projection 64 Convex corner

Claims (2)

In the bean harvesting device that cuts and harvests the root of the bean stalk sequentially while moving forward,
The root cutting blade on the outer circumference of the disc has a serrated blade, and connected to the rotation shaft by increasing inclined rear lower the traveling direction front side of the disc with respect to the horizontal direction, the upper surface of the root cutting blade the collision Detai provided,
A bean cutting apparatus, wherein a press washer for fixing the root cutting blade to a rotation shaft is formed in a non-circular shape, and the protrusion is configured by a convex corner of the press washer. 2. A bean cutting device according to claim 1 , wherein a transmission shaft for transmitting engine power is disposed on a lower surface side of the root cutting blade, and the rotary shaft is connected to a tip portion of the transmission shaft .

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