JP3566260B2 - Cane harvester - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to cane harvesters.
[0002]
[Prior art]
Conventionally, a cane harvester collects sugar cane by crop dividers arranged on the left and right, and guides the collected sugar cane to a cutter to mow. The crop divider is located near the ground surface and is inclined downward in the traveling direction, so that sugar cane that has fallen down due to a typhoon or the like is separated from the stock root and collected on the cutter side.
[0003]
Conventionally, the crop divider has been suspended via hydraulic cylinders on the left and right front of the cane harvester, and the operator visually observes the unevenness of the ground, and according to the unevenness, respectively adjusts the extension length of the left and right hydraulic cylinders. By adjusting, the tip of the crop divider is located near the ground surface. This allows the crop divider to effectively separate the sugar cane from near the root of the stock.
[0004]
[Problems to be solved by the invention]
However, the conventional cane harvester has a problem that the operation is difficult because an operator needs to adjust the length of expansion and contraction of the two right and left hydraulic cylinders by visually checking the unevenness of the ground. Further, when the operator misses the convex portion on the ground and fails to contract the hydraulic cylinder, the tip of the crop divider pierces the convex portion, and the cane harvester stops or the crop divider is damaged. There is. Therefore, since the operator needs to always carefully observe the unevenness of the ground, the operating speed of the cane harvester is relatively low, and as a result, there is a problem that the harvesting efficiency is relatively low. In addition, there is a problem that the operator has great mental fatigue during driving.
[0005]
Therefore, an object of the present invention is to provide a cane harvester that is easy to operate, improves harvesting efficiency, and reduces mental fatigue of the operator.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a cane harvester according to the present invention has a crop divider for separating sugar cane,
A link mechanism for swingably supporting the crop divider;
A swing arm, one end of which is swingably pivotally connected to the link mechanism, and the other part is engageable with an engaging portion provided in the link mechanism;
A linear drive device having a tip pivotally attached to the swing arm,
When the crop divider is raised or lowered, the linear drive device is operated to engage the other portion of the swing arm with the engaging portion of the link mechanism to raise and lower the link mechanism.
During operation of the crop divider, the linear drive device is stopped, the swing arm is swung about a pivot point at the tip of the linear drive device, the link mechanism is swung, and the crop is performed. The feature is to make the divider follow the ground.
[0007]
According to the cane harvester of the first aspect, the linear drive device is operated, the other portion of the swing arm is engaged with the engaging portion of the link mechanism, and the link mechanism is driven, and the crop is performed. The divider is raised and lowered. On the other hand, during the operation of the crop divider, the swing arm is swung about the pivot point at the tip of the stationary linear drive, so that the link mechanism is not disturbed by the linear drive. Rocks. As a result, the crop divider swings following the ground. Accordingly, since the operator does not need to extend the cylinder supporting the crop divider in accordance with the unevenness of the ground as in the related art, the operation of the cane harvester becomes easy. Further, since the crop divider follows the ground during operation, there is no possibility that the crop divider pierces the convex portion of the ground surface to stop the cane harvester or break the crop divider as in the related art. Since the cane harvester is easy to operate, the operating speed can be increased, the harvesting efficiency can be improved, and the mental fatigue of the operator can be reduced.
[0008]
A cane harvester according to a second aspect is the cane harvester according to the first aspect,
The linear drive device,
Tubes and
A rod that emerges from the tube,
A rigid cover attached to the distal end of the rod, covering the rod, and covering at least a part of the tube when the rod is immersed.
[0009]
According to the cane harvester of claim 2, since the rod is covered by the rigid cover, the operation speed of the cane harvester is increased, for example, a large amount of pebbles on the ground or dust is generated by increasing the operating speed of the cane harvester, Even if the amount of sugar cane scattered increases, it is possible to effectively prevent the pebbles from colliding with the rod and the dust and sugar juice from adhering to the rod. Therefore, the cane harvester can be made highly reliable and the maintenance can be simplified, and as a result, the harvesting efficiency can be further improved. Further, when the linear drive device contracts and the rod enters the tube, at least a part of the tube is covered with the cover, so that the linear drive device becomes compact.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
[0011]
FIG. 1A is a side view showing a cane harvester according to an embodiment of the present invention, and FIG. 1B is a front view of the cane harvester shown in FIG. The cane harvester 1 can run along the sugar cane ridges by crawlers 2 and 2 provided in two rows at the lower part on both right and left sides. In front of the left and right crawlers 2, 2, crop dividers 6 for separating sugar cane are arranged on the left and right, respectively. The crop divider 6 has two rows of crop lifters 3, 3 whose upper ends are inclined rearward. It is formed integrally with the lower end. The crop divider 6 and the crop lifters 3, 3 are swingably attached to the main body frame by a link mechanism 5, and the link mechanism 5 is connected to a hydraulic cylinder 7 as a linear drive device for driving the link mechanism 5. Are linked. Two rows of base cutters 8, 8 whose upper ends are inclined more forward than lower ends, are attached to the rear central portions of the left and right crop dividers 6, 6. The lower end of the base cutter 8 is provided with a rotary blade for cutting the root of the sugar cane while rotating. Immediately after the base cutters 8, 8, pull-in rollers 9, 9 are arranged vertically in two stages. Following the pull-in rollers 9, 9, toward the upper center of the cane harvester 1, the transport roller 11 and the leaf removing roller 12 Are arranged in a plurality of rows in upper and lower stages. Immediately after the uppermost transport roller 11, a chopping cutter 14 and a storage rotary plate 15 are arranged.
[0012]
At the rear of the cane harvester 1, a pouch accommodating bag 17 for accommodating acne and a suction device 18 disposed above the acne pouch 17 are arranged. The suction port 19 of the suction device 18 is arranged in the path from the chopping cutter 14 to the acne storage bag 17. While the acne cut by the chopping cutter 14 reaches the acne storage bag 17, sugar cane trash is sucked up by a suction fan 21 incorporated in the suction device 18. The cane that is heavier than the trash and cannot be sucked up by the suction device 18 falls into the acne storage bag 17 by its own weight.
[0013]
The cane harvester 1 having the above configuration harvests sugar cane as follows. That is, the traveling devices 2 and 2 are driven, and the cane harvester 1 moves forward along the sugar cane ridges. When the cane harvester 1 moves forward, the left and right crop dividers 6 and 6 break into the sugar cane ridges, and the sugar cane between the left and right crop dividers 6 and 6 is rotated inward by the rotation of the crop lifters 3 and 3. It is caused to face, and the sugar cane in the next ridge is weeded. The sugar cane caused is cut at the base by the base cutter 8, and the cut sugar cane is drawn into the draw-in roller 9 from the base of the stock and conveyed by the conveying roller 11 toward the chopping cutter 14. During this conveyance, large leaves are peeled off by the leaf removing roller 12. The sugar cane conveyed to the chopping cutter 14 is cut into a predetermined length by the chopping cutter 14, and is removed by the storage rotating plate 15 toward the acne storage bag 17. At this time, the relatively heavy cane 17 falls as it is and is stored in the acne storage bag 17, while the relatively light trash 16 is sucked up by the suction device 14 and discharged from the discharge port 19. You. Thus, sugar cane is harvested by the cane harvester 1.
[0014]
When the cane harvester 1 harvests sugar cane, the crop divider 6 and the crop lifters 3 and 3 are formed so as to swing according to the unevenness of the surface of the ridge. FIG. 2 is a side view showing a state in which the crop divider 6 and the crop lifters 3 and 3 are attached to a main body frame by a link mechanism 5, and FIG. 3 is a plan view showing a lower arm 52 of the link mechanism. It is. As shown in FIG. 2, the crop divider 6 and the crop lifters 3, 3 are attached to a support member 24, and the lower surface is formed smoothly at the lower end of the crop lifters 3, 3 and behind the crop divider 6. The provided copying plate 27 is provided. One end of the upper arm 51 of the link mechanism and one end of the lower arm 52 are pivotally connected to the support member 24. The other end of the upper arm 51 is pivotally connected to the main frame 25 by a pivot shaft 51a, and the other end of the lower arm 52 is pivotally connected to the main frame 25 by a pivot shaft 52a. One end of a swing arm 54 is pivotally attached to the lower arm 52 at substantially the center in the longitudinal direction, and the swing arm 54 is disposed at a position closer to the main body frame than a pivot portion of one end of the swing arm 54. An engagement portion 56 with which the other end of the engagement 54 is engaged is provided. The swing arm 54 is formed so as to be swingable below the lower arm 52 around a pivot shaft 54a at one end, and the contact surface 54b as another portion provided at the other end is provided at the lower end. The arm comes into contact with and engages with the engaging portion 56 of the arm. At the approximate center of the swing arm 54 in the length direction, the tip of the hydraulic cylinder 7 on the rod 71 side is pivotally mounted. The hydraulic cylinder 7 includes a tube 72 in which a piston (not shown) is slidably fitted. The rod 71 is connected to the piston, and the distal end of the tube 72 is pivotally connected to the main body frame 25 of the cane harvester. I'm wearing
[0015]
When starting the harvesting operation by the cane harvester 1, first, the hydraulic cylinder 7 is extended. Then, the swing arm 54 swings downward about the pivot shaft 54a, and the engagement of the contact surface b of the swing arm with the engagement portion 56 is released, and the swing arm 54 descends as shown in FIG. Position D is reached. At this time, the copying plate 27 abuts on the ground surface 81 due to the weight of the crop lifters 3 and 3, the crop divider 6, and the support member 24. After that, the traveling of the cane harvester 1 is started. Then, the upper arm 51 and the lower arm 52 of the link mechanism swing around the pivot shafts 51a and 52a, respectively, and the swing arm 54 and the hydraulic cylinder 7 swing. Since the hydraulic cylinder 7 is connected to the lower arm 52 via the swing arm 54, the hydraulic cylinder 7 does not hinder the swing of the lower arm 52 around the pivot shaft 52a. Thereby, the lower surface of the copying plate 27 slides in contact with the ground surface 81, and the crop lifters 3 and 3, the crop divider 6, and the support member 24 swing according to the unevenness of the ground surface 81. I do. Accordingly, the crop divider 6 can be stably positioned near the ground surface 81 during operation, and can stably separate sugar cane. As a result, the cane harvester 1 eliminates the need for the operator to extend and retract the left and right hydraulic cylinders according to the unevenness of the ground surface as in the related art, so that the operation is facilitated and mental fatigue of the operator is reduced. Can be reduced. Further, there is no inconvenience that the crop divider rushes into the convex portion on the ground surface by erroneous operation of the hydraulic cylinder to stop the cane harvester or to damage the crop divider. Therefore, the cane harvester 1 is easy to operate and hard to stop abnormally, so that the sugar cane harvesting efficiency can be improved.
[0016]
When the harvest of sugar cane by the cane harvester 1 is completed and the cane harvester 1 retreats from the sugar cane ridge, the hydraulic cylinder 7 is contracted. Then, the swing arm 54 located at the lower position D swings upward around the pivot shaft 54a, and the contact surface b of the swing arm is engaged with the engaging portion 56 of the lower arm of the link mechanism. Combine. When the hydraulic cylinder 7 is further contracted, the lower arm 52 is driven upward through the engaging portion 56, and the link mechanism 5 swings upward to reach the swing position U. Thereby, the copying plate 27 separates from the ground surface, and the crop lifters 3 and 3 and the crop divider 6 rise. In FIG. 3, the vicinity of the pivot 51a of the upper arm 51 of the link mechanism is omitted.
[0017]
FIG. 4 is a sectional view of the rod-side end of the hydraulic cylinder 7 that drives the link mechanism 5 as viewed from the side. In the hydraulic cylinder 7, a steel cover 75 as a hard cover that covers the rod 71 is fixed to an end on the rod side. The cover 75 is formed so as to cover the rod 71 exposed when the hydraulic cylinder 7 is extended, and to cover a part of the tube 72 when the hydraulic cylinder 7 is contracted. The cover 75 is provided with a notch extending in the longitudinal direction. When the hydraulic cylinder 7 contracts, the supply pipe and the discharge pipe of the hydraulic oil formed in the tube 72 are positioned in the notch of the cover 75. I am trying to do it. Since the rod is covered with the steel cover 75 when the hydraulic cylinder 7 is extended, even if pebbles on the ground surface are rolled up during operation of the cane harvester 1, the disadvantage that the pebbles collide with the rod is effective. Can be prevented. In addition, even if the dust on the ground surface is rolled up or the sugar juice of the sugar cane scatters during the operation of the cane harvester 1, the inconvenience of the dust and sugar juice adhering to the rod can be effectively prevented. That is, in the cane harvester 1 according to the present embodiment, the crop cover 6 is swung in accordance with the ground surface and the harvesting efficiency is good and the harvesting speed is relatively high. It is possible to effectively prevent the hydraulic cylinder 7 from being adversely affected by hoisting of dust and scattering of sugar juice from sugar cane. Therefore, the cane harvester 1 is highly reliable and maintenance is simplified, and as a result, the harvesting efficiency can be further improved. Further, when the hydraulic cylinder 7 contracts and the rod 71 enters the tube 72, at least a part of the tube 72 is covered with the cover 75, so that the hydraulic cylinder 7 can be made compact.
[0018]
In the above embodiment, the hydraulic cylinder 7 may pivotally connect the tube to the swing arm 54 and the rod to the body frame 25. In other words, the hydraulic cylinder may be arranged with the tube and the rod reversed.
[0019]
The swing arm 54 pivotally connects the end on the body frame 25 side to the lower arm 52 of the link mechanism, and engages the end on the crop divider 6 side with an engaging portion provided on the lower arm 52. May be configured.
[0020]
Further, the swing arm 54 may be pivotally attached to the upper arm 51 of the link mechanism so as to be freely swingable, or may be pivotally attached to a member other than the arm if it is a component of the link mechanism.
[0021]
Alternatively, only the crop divider may be supported by a link mechanism to which the swing arm is pivotally attached, and only the crop divider may swing according to the unevenness of the ground.
[0022]
The cover 75 that covers the rod 71 of the hydraulic cylinder may be formed of a material other than steel, such as a resin. In short, it suffices to have good durability and rigidity to maintain a shape that is located outside the hydraulic cylinder when contracted.
[0023]
Further, the cover 75 may cover only the front side in the traveling direction of the rod 71, or may cover all surfaces of the rod.
[0024]
The hydraulic cylinder 7 may be an air cylinder, or may be a mechanical linear drive device such as a rack and pinion type that uses no fluid.
[0025]
【The invention's effect】
As is clear from the above, according to the cane harvester of the first aspect of the present invention, a crop divider for separating sugar cane, a link mechanism for swingably supporting the crop divider, and one end of the link mechanism swingably. A swing arm pivotally attached to the link mechanism and having another portion engageable with an engagement portion provided on the link mechanism; and a linear drive device having a tip pivotally attached to the swing arm. , At the time of lowering, the linear drive device is operated to engage the other part of the swing arm with the engaging portion of the link mechanism to raise and lower the link mechanism. With the drive device stopped, the swing arm is swung about the pivot point at the end of the linear drive device, and the link mechanism is swung to copy the crop divider to the ground. Since the operator does not need to extend the cylinder supporting the crop divider according to the unevenness of the ground as in the past, the operation of the cane harvester can be easily performed, and abnormal stop caused by unevenness on the ground surface Since there is little, the operating speed can be increased, the harvesting efficiency can be improved, the mental fatigue of the operator can be reduced, and the crop divider can be prevented from being damaged.
[0026]
According to the cane harvester according to claim 2, the linear drive device is attached to a tube, a rod that protrudes and retracts from the tube, and a tip of the rod, covers the rod, and when the rod is retracted. Since a hard cover that covers at least a part of the tube is provided, the operating speed of the cane harvester is increased, and the pebbles are rolled up and dust is increased. The collision with the rod and the adhesion of the dust and sugar juice to the rod can be effectively prevented, the cane harvester can be made highly reliable, the maintenance can be simplified, and as a result, the harvesting efficiency can be further improved. Further, when the linear drive device contracts, at least a part of the tube is covered with the cover, so that the linear drive device can be made compact.
[Brief description of the drawings]
FIG. 1 (a) is a side view of a cane harvester according to an embodiment of the present invention, and FIG. 1 (b) is a front view of the cane harvester of FIG. 1 (a).
FIG. 2 is a side view showing a state where a crop divider 6 and crop lifters 3 and 3 are attached to a main body frame by a link mechanism 5;
FIG. 3 is a plan view showing a lower arm 52 of a link mechanism.
4 is a cross-sectional view of a rod-side end of a hydraulic cylinder 7 that drives a link mechanism 5, as viewed from the side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cane harvester 3 Crop lifter 5 Link mechanism 6 Crop divider 7 Hydraulic cylinder 24 Support member 25 Main frame 27 Copying plate 51 Link mechanism upper arm 52 Link mechanism lower arm 54 Swing arm 54a Swing arm pivot shaft 54b Swing arm Contact surface 56 of moving arm Engagement part 71 Rod of hydraulic cylinder 72 Tube of hydraulic cylinder 81 Ground surface

Claims (2)

A crop divider that separates sugar cane,
A link mechanism for swingably supporting the crop divider;
A swing arm, one end of which is swingably pivotally connected to the link mechanism, and the other part is engageable with an engaging portion provided in the link mechanism;
A linear drive device having a tip pivotally attached to the swing arm,
When the crop divider is raised or lowered, the linear drive device is operated to engage the other portion of the swing arm with the engaging portion of the link mechanism to raise and lower the link mechanism.
During operation of the crop divider, the linear drive device is stopped, the swing arm is swung about a pivot point at the tip of the linear drive device, the link mechanism is swung, and the crop is performed. A cane harvester characterized by a divider imitating the ground. The cane harvester according to claim 1,
The linear drive device,
Tubes and
A rod that emerges from the tube,
A cane harvester attached to the distal end of the rod, covering the rod and covering at least a part of the tube when the rod is immersed.

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