JP4515629B2 - Structure for preventing reverse rotation of working section in agricultural product harvesting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for preventing reverse rotation of a work part in an agricultural product harvesting machine, wherein when the main transmission lever is shifted to the reverse side, the work part clutch lever is moved to the cut side by the shift operation to prevent reverse rotation of the work part. About.
[0002]
[Prior art]
Conventionally, a working unit that has a traveling unit that is switched between forward, neutral, and reverse by the main shift lever, receives power from the same transmission system as the traveling unit, and is connected to and disconnected from the power by the working unit clutch lever. Agricultural harvesters such as a leek harvester with a (harvesting / conveying section) are well known.
[0003]
[Problems to be solved by the invention]
In the conventional leek harvesting machine, the power shifted by the same HST (hydraulic automatic transmission) is used to synchronize the driving of the traveling unit and the driving of the working unit. For this reason, if the main speed change lever is shifted to the reverse side while the working part is in the driving state, the working part is reversed. For example, in a tilting belt that is discharged in an inclined posture while conveying green onions vertically, the belt is detached. There was a problem that it became easy. In addition, although there is a harvesting machine in which a one-way clutch is provided in the drive unit to prevent reverse rotation, there is a problem that the structure is complicated and the cost is increased.
[0004]
Accordingly, in order to solve the above-described problems, the present invention is designed so that when the main shift lever is shifted to the reverse side, the working unit clutch lever is moved to the cut side in conjunction with this operation to prevent reverse rotation of the working unit. It is an object of the present invention to provide a structure for preventing the work part from being reversed in the agricultural product harvesting machine.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the present invention has the following structure.
[0006]
A. A self-propelled aircraft equipped with a traveling unit that can be switched between forward, neutral, and reverse by the main gearshift lever is provided with a working unit that receives power from the same transmission system as the traveling unit and that is connected to and disconnected by the working unit clutch lever. Agricultural harvester
When the main shift lever is shifted to the reverse side, the working portion clutch lever is moved to the disengagement side by the shifting operation to prevent reverse rotation of the working portion.
B. A switching arm is provided between the main transmission lever and the working section clutch lever to move the working section clutch lever to the cut side by shifting the main transmission lever to the reverse side.
[0007]
C. The switching arm moves the working part clutch lever to the cut side through the engagement hook attached to the main transmission lever and the engagement pin attached to the clutch shaft by the operation of shifting the main transmission lever to the reverse side.
D. The operation panel of the main transmission lever and the operation panel of the working unit clutch lever are arranged substantially in parallel, and the operation panel of the working unit clutch lever is formed in a U-shape, and one side of the U-shaped main transmission When the main speed change lever is shifted to the reverse side by placing it on the lever operation panel side, the work part clutch lever is moved to the cut side, and on the other side of the U shape, the work part clutch lever is not related to the main speed change lever. A configuration that can be operated.
[0008]
[Action]
By adopting such a configuration, the working unit reverse rotation preventing structure in the agricultural product harvesting machine of the present invention performs the following actions.
[0009]
(1). A. above. With this configuration, when the main transmission lever is shifted to the reverse side, the working unit clutch lever moves to the cut side in conjunction with the shift operation, and the reverse rotation of the working unit is prevented. Therefore, the belt of the working unit does not come off.
(2). B. above. With this configuration, when the main transmission lever is shifted to the reverse side, the working unit clutch lever moves to the disengagement side via the switching arm interposed between the main transmission lever and the working unit clutch lever. Prevent reverse rotation and ensure safety.
[0010]
(3). C. above. With this configuration, when the main speed change lever is shifted to the reverse side, the switching arm causes the work section clutch lever to be cut off via the engagement hook attached to the main speed change lever and the engagement pin attached to the clutch shaft. To prevent reverse rotation of the working part.
(4). D. above. With this configuration, the operation panel of the main transmission lever and the operation panel of the working unit clutch lever are close to each other in parallel, and one side of the operation panel of the U-shaped working unit clutch lever is disposed on the operation panel side of the main transmission lever. Thus, when the main transmission lever is shifted to the reverse side, the working unit clutch lever is moved to the disengagement side. In addition, on the other side of the U-shaped operation panel, the working unit clutch lever can be engaged and disengaged without being related to the main transmission lever.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
3 to 6, reference numeral 1 is a leek harvester, and the body 2 is equipped with crawlers 3 and 3 that are paired in the left-right direction and that enable spin (super-confidence) rotation. An engine 4 is mounted on one side and slightly rear side of the machine body 2, and a hydraulic device driven by the engine 4 is mounted in the vicinity thereof, although not shown. A transmission 5 having an HST (hydraulic automatic transmission) (not shown) is provided between the crawlers 3 and 3 at a lower position near the rear part of the machine body 2 so that the crawlers 3 and 3 are driven to change speed.
[0012]
The crawlers 3 and 3 are driven to drive the crawler belt 3b by the driving wheel 3a at the rear part in the forward direction of the machine body 2, and a plurality of grounding wheels 3c that are in rolling contact with the crawler belt 3b by pressing the crawler belt 3b toward the grounding side. Is supported by a pair of front and rear link members 3e so as to be movable up and down with respect to the frame of the body 2, and a cylinder mechanism 3f that can extend and contract between the wheel frame 3d and the frame of the body 2 is supported. And the ground contact portion of the crawler belt 3b can be moved up and down around the drive wheel 3a by expansion and contraction of the cylinder mechanism 3f.
[0013]
It has a digging blade 6 at the tip from the lower front of the machine body 2 between the crawlers 3 and 3 to the rear of the machine body 2 through the center lower part of the machine body 2, and the digging blade is continuously connected to the digging blade 6 A digging / conveying conveyor device 8 having an endless bar conveyor 7 that conveys the root of the leek dug up by 6 while being placed in a vertical posture and lifted up is provided obliquely. Located above the digging / conveying conveyor device 8, the length is longer than the digging / conveying conveyor device 8, and the stalks and leaves of the green onion excavated from the field by the digging blade 6 are sandwiched in a vertical posture. A pair of left and right first nipping and conveying belts 9 are provided. On the lower side of the conveyance end portion of the first nipping and conveying belt 9, the green onion conveyed by the first nipping and conveying belt 9 is received, and the foliage portion is converted into the horizontal posture in the process of being nipped and conveyed in the vertical posture. A second nipping / conveying belt 10 for discharging is disposed.
[0014]
The rear end portion of the digging / conveying conveyor device 8 is pivotally supported with respect to the machine body 2 so as to be pivotable in the vertical direction via an axis, and is interposed between the digging / conveying conveyor device 8 and the machine body 2. The excavating / conveying conveyor device 8 is rotated up and down around the axis by the expansion and contraction operation of the mounted hydraulic cylinder 11. The front end portion of the first holding and conveying belt 9 is pivotally supported by the tip end portion of the link arm 12, and the rear end portion is pivotally supported by the machine body 2 via the link arm. When the base of the digging / conveying conveyor device 8 is rotated by the hydraulic cylinder 11 and the tip side is moved upward, the first sandwiching and conveying belt 9 is also moved backward by the link arm 12 in conjunction with this. It has become. Further, an earthing rotor 13 for removing the leek soil is disposed below the digging / conveying conveyor device 8, and the root of the leek root is loosened behind the earthing rotor 13. A soil dropping drum 14 for removing soil is provided.
[0015]
When the digging / conveying conveyor device 8 is rotated upward by the hydraulic cylinder 11, the first clamping conveying belt 9 is moved rearward by the link arm 12 in conjunction with this, and the digging / conveying conveyor device 8 is moved. And the first nipping and conveying belt 9 do not come into contact with each other. An elongated hole is provided between the distal end of the link arm 12 and the first holding and conveying belt 9, and by adjusting the support position of the link arm 12 with respect to the elongated hole, the support height of the first holding and conveying belt 9 is adjusted. Is adjusted.
[0016]
The second sandwiching and transporting belt 10 sandwiches and conveys the stalks and leaves of the green onion at the starting end in a vertical posture, and in the transport process, the green onions are sequentially twisted from the vertical posture to the horizontal posture to form an oblique horizontal posture (almost substantially The posture is changed to 45 degrees, and the sheet is discharged from the conveyance end portion. A feed belt 15 that also serves as a work table is provided below the discharge position so that the operator can prepare the green onions discharged from the second nipping and conveying belt 10. A leaf portion conveyor belt that supports and conveys the leaf portion of the green onion nipped and conveyed by the first nipping and conveying belt 9 and the second nipping and conveying belt 10 on the upper side of the first end portion of the second nipping and conveying belt 10. 16 is provided coaxially with the second nipping and conveying belt 10. The posture of the leaf conveyor belt 16 can be adjusted by a rotation adjusting mechanism around the support arm.
[0017]
The feed belt 15 also serving as a workbench is provided with an endless belt extending in the length direction of the machine body 2 and a root feed screw roll provided on the root side of the leek, and is inclined so that the operator side is low and the opposite side is high. Yes. Further, in this feed belt 15, the operator prepares the green onions discharged from the terminal portion of the second holding and conveying belt 10 in the front-rear direction, and a root / leaf cutting device 17 provided at the rear end portion of the feed belt 15. To cut the roots and leaves. The root / leaf cutting device 17 is provided with a presser belt 18 and a rotating disk (cutter) 19, followed by the root / leaf cutting device 17, a discharge belt 20, a focusing table 22 supported by a support base 21, and a mount. A table 23 and the like are provided. Power is transmitted to the crawler 3, the digging / conveying conveyor device 8, the first nipping / conveying belt 9, the second nipping / conveying belt 10, etc. to the feed belt 15, the rotating disk 19, the holding belt 18, and the discharge belt 20. Power is transmitted by a transmission system different from the transmission system to be transmitted.
[0018]
On the side of the airframe 2 opposite to the engine 4, a control unit 24, a pilot step 25, a seat 26, a worker step 27, an auxiliary step 28, and the like are provided. Of these steps, the operator rides on the operator's step 27, and the support arm 26a of the seat 26 is operated by the operator (operator) so that the operator sitting on the seat 26 can also work. Can turn freely so that it can go to the control section 24 or to the work table 15. Further, the seat of the seat 26 has a structure that can be tilted back and forth so that the operator (operator) can work while sitting or standing.
[0019]
A pair of left and right support arms 29, 29 protrude forward from the left and right frames of the digging / conveying conveyor device 8, and the inclined shoulders of the harvested onion ridges at the tips of the support arms 29, 29. A pair of grounding wheels 30, 30 that are in rolling contact with each other are pivotally supported to face each other. These wheels 30 and 30 also function as a heel follower that follows the machine body along the length direction of the harvested onion culm as well as the vertical adjustment of the digging / conveying conveyor device 8. The conveyance conveyor device 8 is supported so that the vertical adjustment is possible by the vertical adjustment cylinder 31 and the horizontal movement adjustment mechanism 30a is adjustable. Further, the pair of wheels 30 and 30 have a camber angle, rotate in contact with the inclined shoulders of the harvested onion ridge, and steer and move the machine following the harvested onion ridge. ing. Between the wheel 30 and the tip of the digging / conveying conveyor device 8, a collapsible disk 32 for collapsing the shoulder of the harvesting basket is supported by the support arm 29, and the vertical / horizontal movement adjustment mechanism 32a adjusts the vertical / horizontal movement. It is provided as possible.
[0020]
The transmission 5 that receives power from the engine 4 and changes gears is continuously variable by a hydraulic continuously variable transmission (HST). The continuously variable transmission and the gear shift of the transmission 5 are combined to be continuously variable and stepless. The gears can be output at different speeds. Then, the power transmission is connected and disconnected through the side clutch and the differential device, and the crawlers 3 and 3 are shifted in a stepless manner and stepped, and a spin turn (super turning) is enabled. Further, the transmission 5 transmits the shifted power to each working unit, and the rotation speed of the transmission 5 can be adjusted steplessly and steplessly. By combining, the excavation work speed can be set freely.
[0021]
The control unit 24 is provided with a main transmission lever 33 that switches forward, neutral, and reverse of the crawlers 3 and 3 and a working unit clutch lever 34 that connects and disconnects power to the working unit. As shown in FIGS. 1 and 2, the main transmission lever 33 and the working part clutch lever 34 move the working part clutch lever 34 to the cut side by the shifting operation when the main transmission lever 33 is shifted to the reverse side. To prevent the working part from reversing.
[0022]
The main speed change lever 33 and the working part clutch lever 34 are arranged so that the operation panel 33a and the operation panel 34a are substantially parallel and close to each other. The operation part clutch lever operation panel 34a is U-shaped, and one side of the U-shaped operation panel 34a is disposed on the operation panel 33a side of the main transmission lever. An engagement hook 35 is attached to the lower end portion of the main transmission lever 33, and an engagement pin 37 is attached to the clutch shaft 36 on the working portion clutch lever 34 side. The working part clutch lever 34 is pivotally supported with respect to the clutch shaft 36, and a spring 38 is interposed in the pivotal support part. A first switching arm 39 and a second switching arm 40 that are fitted to the working unit clutch lever 34 at the upper part are provided on both sides of the pivot portion of the working unit clutch lever 34. Then, when the main transmission lever 33 is shifted to the reverse side, the engagement hook 35 engages with the engagement pin 37 to rotate the clutch shaft 36 to the cut side, and the drive of the working unit is stopped. At the same time, the working unit clutch lever 34 is moved to the cut side via the first switching arm 39.
[0023]
On the other side of the operation part 34 a of the operation part clutch lever 34 a, the clutch is engaged with the operation part clutch lever 34 being disconnected from the main transmission lever 33 via the second switching arm 40. Cutting operation can be performed. The spring 38 is biased so as to be positioned on the main transmission lever 33 side when the working unit clutch lever 34 is in the cut position within the operation panel 34a. The working section clutch lever 34 is turned on and turned off while the main transmission lever 33 is shifted to neutral or forward, but is normally operated on the operation panel 33a side of the main transmission lever of the U-shaped operation panel 34a. In this state, when the main transmission lever 33 is shifted to the reverse side, the working unit clutch lever 34 moves to the disengagement side, and the driving of the working unit is stopped.
[0024]
Next, operation | movement of the leek harvesting machine 1 of the Example comprised as mentioned above is demonstrated. When the green onion harvester 1 harvests the green onion from the field, the crawlers 3 and 3 are positioned between the harvested green onions and the ground wheels 30 and 30 are brought into contact with the slanted shoulders of the green onion and excavated. -Adjust the excavation depth by adjusting the excavating blade 6 part of the conveyer device 8 with the hydraulic cylinder 11, crush the crush with the disk 32 by advancing the machine body, dig the green onion from below with the clay. It digs up with the take-off blade 6, the root part is mounted on the bar conveyor 7, and it conveys toward the machine body diagonally upward, dropping the soil adhering to the rhizome part. Simultaneously with this conveyance, the foliage portion of the green onion is nipped by the first nipping conveyance belt 9 and conveyed without being damaged. When the crawlers 3 and 3 travel with a left-right inclination, the crawlers 3 and 3 are adjusted up and down to keep the aircraft in a horizontal state and travel.
[0025]
When the green onion conveyed in the vertical position by the bar conveyor 7 and the first sandwiching and conveying belt 9 reaches the terminal end of the bar conveyor 7, the earth-carrying rotor 13 is brought into contact with the rhizome portion of the green onion to form the rhizome portion. The attached soil is dropped. As the green onions move further, the roots of the roots are dropped and loosened by the drum 14 to cut some of the roots, and the remaining soil is further removed. Then, immediately before the green onions are discharged from the terminal end of the first holding / conveying belt 9, the foliage is held by the second holding / conveying belt 10 and transferred, and the leaves are conveyed by the leaf conveying belt 16. Thus, at the end portion of the second nipping and conveying belt 10, it becomes a horizontal posture and is discharged onto the feed belt 15.
[0026]
The green onions discharged on the feed belt 15 are pressed down with the roots aligned by the operator standing at the operator's step 27 or the operator (operator) sitting at the seat 26 (or standing at the seat 26 position). Supplying to the belt 18 and the rotating disk 19, a root and a leaf are cut | disconnected. Then, a substantially predetermined amount is collected on the focusing table 22 by the discharge belt 20 and placed on the mounting table 23. Of course, the leek of the focusing table 22 and the mounting table 23 may be bundled, packed in a bag, or housed in a container. When the main transmission lever 33 is shifted backward to retract the leek harvesting machine, the engagement hook 35 engages with the engagement pin 37 to rotate the clutch shaft 36 to the cut side, and the drive of the working unit is stopped. . At the same time, the working unit clutch lever 34 is moved to the cut side via the first switching arm 39.
[0027]
Here, the leek harvesting machine 1 has an appropriate moving speed according to the field condition and the crop condition by the stepless or stepped variable speed travel of the crawlers 3 and 3, and the stepless or stepped variable speed rotation of each rotating part. The rotation speed can be selected, the work accuracy is high, and the efficient harvesting work is performed. Further, the crawlers 3 and 3 are capable of spin turning (super turning), and the excavating / conveying conveyor device 8, the first sandwiching and transporting belt 9, the second sandwiching and transporting belt 10, and the leaf portion are driven by the hydraulic cylinder 11. The conveyor belt 16, the grounding wheel 30, the collapsible disc 32, and the like are rotated upward, the entire length of the machine body 2 is shortened, and the spin is stably rotated in the headland and moved to the next harvest basket in one turn. can do.
[0028]
Further, in front of the digging / conveying conveyor device 8, grounding wheels 30, 30 that follow the movement of the machine body along the length direction of the harvested green onion are provided, and the digging / conveying conveyor device 8 is vertically adjusted. Since it is supported by the cylinder 31 so that it can be adjusted up and down and by the left and right movement adjustment mechanism 30a, both wheels 30 automatically follow the onion to be harvested and automatically steer the machine to dig. -Automatic digging / conveying is performed by the conveying conveyor device 8, the first nipping and conveying belt 9, and the second nipping and conveying belt 10. Therefore, the operator can spend most of the time on the leek preparation work, except for the airframe steering operation at the heel of the harvested green onion.
[0029]
【The invention's effect】
As described above, according to the structure for preventing reverse rotation of the working unit in the agricultural product harvesting machine of the present invention, the following effects can be obtained.
[0030]
(1). When the main gearshift lever is shifted to the reverse side, the shift operation moves the working part clutch lever to the disengagement side to prevent reverse rotation of the working part. The working unit clutch lever moves to the cut side in conjunction with the operation, and the working unit can be prevented from reverse rotation. Therefore, it is possible to prevent a situation where the belt of the working unit is detached.
(2). Since the switching arm that moves the working part clutch lever to the cutting side by the operation of shifting the main shifting lever to the reverse side is interposed between the main transmission lever and the working part clutch lever, the main transmission lever is shifted to the reverse side. Then, the working part clutch lever moves to the cut side via the switching arm interposed between the main transmission lever and the working part clutch lever, and the reverse of the working part can be prevented to ensure safety. .
[0031]
(3). The switching arm shifts the main clutch lever to the reverse side, and moves the working part clutch lever to the cut side via the engagement hook attached to the main transmission lever and the engagement pin attached to the clutch shaft. When the shift lever is shifted to the reverse side, the switching arm moves the working part clutch lever to the cut side via the engagement hook attached to the main shift lever and the engagement pin attached to the clutch shaft. Inversion of the part can be prevented.
(4). The operation panel of the main transmission lever and the operation panel of the working unit clutch lever are arranged substantially in parallel, and the operation panel of the working unit clutch lever is formed in a U shape, and one side of the U shape is the main transmission lever When the main speed change lever is shifted to the reverse side, the work section clutch lever is moved to the disengagement side, and the work section clutch lever is operated on the other side of the U-shape independently of the main speed change lever. Therefore, the operation panel of the main transmission lever and the operation panel of the working unit clutch lever are close to each other in parallel, and one side of the operation panel of the U-shaped working unit clutch lever is arranged on the operation panel side of the main transmission lever. Thus, when the main transmission lever is shifted to the reverse side, the working unit clutch lever can be moved to the disengagement side. Further, on the other side of the U-shaped operation panel, the working unit clutch lever can be entered and disconnected without being related to the main transmission lever.
[Brief description of the drawings]
FIG. 1 is a front view of a reverse rotation preventing structure for a working unit according to the present invention.
FIG. 2 is a perspective view of the same.
FIG. 3 is a right side view of a leek harvester to which the present invention is applied.
FIG. 4 is a left side view of a leek harvester to which the present invention is applied.
FIG. 5 is a plan view of a leek harvester to which the present invention is applied.
FIG. 6 is a rear view of a leek harvester to which the present invention is applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Green onion harvester 2 Machine body 3 Crawler 3a Drive wheel 3b Track 3c Grounding wheel 3d Wheel frame 3e Link member 3f Cylinder mechanism 4 Engine 5 Transmission 6 Digging blade 7 Endless bar conveyor 8 Digging / conveying conveyor device 9 Nipping and conveying belt 10 Second clamping and conveying belt 11 Hydraulic cylinder 12 Link arm 13 Landing rotor 14 Landing drum 15 Feed belt 16 also serving as a workbench Leaf transport belt 17 Root / leaf cutting device 18 Holding belt 19 Rotation Disc (Cutter)
20 Discharge belt 21 Support base 22 Focusing base 23 Mounting base 24 Control section 25 Pilot step 26 Seat 24a Support arm 27 Worker step 28 Auxiliary step 29 Wheel support arm 30 Grounding wheel 30a Horizontal movement adjustment mechanism 31 Vertical adjustment cylinder 32 Collapse disk 32a Vertical / horizontal movement adjustment mechanism 33 Main shift lever 33a Operation panel 34 Working portion clutch lever 34a U-shaped operation panel 35 Engagement hook 36 Clutch shaft 37 Engagement pin 38 Spring 39 First switching arm 40 Second Switching arm

Claims (1)

A self-propelled airframe equipped with a traveling part that can be switched between forward, neutral, and reverse by the main shift lever is provided with a working part that receives power from the same transmission system as the traveling part, and the power is connected and disconnected by the working part clutch lever. Agricultural harvester
The operation panel of the main transmission lever and the operation panel of the working unit clutch lever are arranged substantially in parallel, and the operation panel of the working unit clutch lever is formed in a U shape,
On both sides of the pivoting portion of the working unit clutch lever, a first switching arm and a second switching arm that are fitted to the working unit clutch lever at the top are provided,
When the working unit clutch lever is on one side of the U-shape, when the main transmission lever is shifted to the reverse side, the working unit clutch lever moves to the cut side via the first switching arm. Is stopped,
When the working unit clutch lever is on the other side of the U-shape, the working unit clutch lever is disconnected from the first switching arm and the second switching arm is stopped in a state where the driving of the working unit is stopped. A structure for preventing reverse rotation of the working section of an agricultural product harvester characterized by being operable .

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