JP2013009651A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the presence of a seedling transplanting device at a rear side at an elevated position on traveling over ridges, etc., causes the posture of traveling over the ridges to become unstable since the position of its center of gravity is high and the front end part of a vehicle body is elevated.SOLUTION: This seedling transplanter obtained by linking the seedling transplanting device 8 at the rear side of a traveling vehicle body 5 of riding type by a lift cylinder 6 through a lift link 7 for lifting up and down, while descending the seedling transplanting device 8 by the above lift cylinder 6 and sliding a float 9 at a bottom part by contacting it with ground, separately inserting/planting the seedlings delivered from a seedling tank 11 on a level soil surface by a transplanting device 10 and also installing a grip handle 12 for operating the traveling vehicle body 5 at the front end part of the traveling vehicle body 5 is constituted as descending the seedling transplanting device 8 to a proper position by laying down the above grip handle 12 for operation.

Description

  The present invention relates to a seedling transplanting machine, and automatically lowers a seedling transplanting device in a traveling operation at the time of overpass or when a truck is loaded or unloaded.

  2. Description of the Related Art A technique is known that regulates and guides the traveling position, traveling posture, and the like of a vehicle body by grasping a grip handle provided at the front end of the vehicle body on an inclined land such as a farm entrance / exit (see, for example, Patent Documents 1 and 2). .

JP 2009-268437 A JP 2010-246409 A

  If the rear seedling planting device is in the ascending position, such as when traveling over the coast, the center of gravity position is high, the front end of the vehicle body is elevated, and the overpass traveling posture becomes unstable. Therefore, during such overpass traveling, the seedling planting device is lowered by a simple operation to lower the center of gravity position of the body travel so as to improve the operability during overpass.

  According to the first aspect of the present invention, seedling planting is performed on the rear side of the traveling vehicle body (5) in which the front wheel (2) and the rear wheel (4) are arranged via a lift link (7) that is lifted and lowered by a lift cylinder (6). The device (8) is connected, and the seedling planting device (8) is lowered by the lift cylinder (6) and the bottom float (9) is slid on the ground while the seedling tank (10) is planted on the level soil surface. In the seedling transplanting machine in which the seedling fed from (11) is separated and planted, and the front end of the vehicle body (5) is provided with a grip handle (12) for operating the vehicle body (5), the grip handle (12 ), The seedling transplanting device (8) is lowered to an appropriate position.

  When the seedling transplanter travels over the road or travels on a truck to transport it, the seedling transplanter 8 is moved up and down with respect to the vehicle body 5 by the lift cylinder 6 to move up and down the inclined surface. At this time, an operator or an auxiliary worker guides the vehicle 5 so that the traveling posture, direction, and the like are guided and regulated while holding the grip handle 12 at the front end of the vehicle body 5 and tilting it forward.

  Then, by the tilting operation of the grip handle 12, the seedling planting device 8 is lowered by the lift cylinder 7, is lowered to an appropriate position set in advance, and is automatically stopped. Therefore, the position of the center of gravity of the vehicle body 5 is lowered and the front end portion of the vehicle body 5 is prevented from rising, and the bottom surface of the seedling planting device 8 or the float 9 is prevented from being damaged due to grounding, collision, or the like.

  According to a second aspect of the present invention, while the vehicle body (5) is traveling, the seedling planting device (8) is lowered by detecting an inclination angle of the vehicle body (5) in the front-rear direction larger than a certain value. The seedling transplanter according to claim 1, wherein the seedling transplanter is provided.

  When the traveling vehicle body 5 of the seedling transplanting machine is inclined more than a certain amount in the front-rear direction during traveling, or when it is inclined, the seedling transplanting device 5 in the raised position is automatically set to an appropriate position. Since the vehicle is lowered, the center of gravity of the aircraft can be lowered to achieve a stable running posture.

  The invention according to claim 3 is characterized in that an alarm is output when the lift cylinder (6) cannot be expanded and contracted and the seedling planting device (8) is in a lift lock state in which the lift is not possible. Alternatively, the seedling transplanter described in 2 was used.

  As described above, when the seedling transplanting machine travels with a large inclination in the front-rear direction, such as in the case of Banetsu, when the rear-mounted seedling transplanting device 8 is in the raised position, the grip handle 12 is tilted to the appropriate position. It is lowered to lower the center of gravity position of the aircraft, but when this seedling planting device 8 is in a lift lock state for any reason and cannot be lowered, this outputs a warning to notify the driver Let

  In particular, there is a case where the lift cylinder 6 for raising and lowering the seedling planting device 8 is brought into an inoperable state and the raising and lowering operation is locked. In this case, the operation of the operation mechanism for causing the lift cylinder 6 to expand and contract is operated. From when the control time until the expansion / contraction operation of the lift cylinder 6 elapses, a warning buzzer is automatically sounded and notified when the set scheduled time has elapsed.

  According to a fourth aspect of the present invention, the center marker (13) adjacent to the grip handle (12) is rotated rearward by tilting the grip handle (12) forward. The seedling transplanter according to any one of Items 1 to 3.

  As described above, the grip handle 12 provided at the front end portion of the traveling vehicle body 5 is gripped during the overpass traveling and tilted to the front side to regulate or guide the traveling state of the traveling vehicle body 5. When tilted to the front side, the center marker 13 in the upright state arranged side by side is rotated so as to tilt to the rear side, so that it does not interfere with the operator who is operating just before the traveling vehicle body 5.

  Further, when the grip handle 12 is returned to the original position, the center marker 13 is also returned to the upright position.

  According to the first aspect of the present invention, when the grip handle 12 is tilted to the front side of the traveling vehicle body 5 to perform the over-claw traveling operation, even if the seedling planting device 8 at the rear of the traveling vehicle body 5 is in the raised position, it is appropriate. The lowering operation of the seedling planting device 8 is performed by the operation of the grip handle 12 together with the door that is lowered to the position and can lower the center of gravity position of the body as a seedling transplanting machine to stabilize the heeling traveling posture. Since the operability can be improved, the flying of the front end of the aircraft is prevented to ensure traveling safety, and grounding, collision, etc. of the seedling planting device 8 and the bottom surface of the float 9 are reduced and damage is prevented. Can do.

  In addition to the effect of the invention of claim 1, the invention described in claim 2 controls the descending control of the seedling planting device 8 at the rear of the traveling vehicle body 5 when traveling over the heel. Since the output operation is performed when the traveling posture is largely inclined in the front-rear direction such as loading / unloading traveling, the raising posture position is maintained without lowering the seedling planting device 8 where it is not necessary to lower. Efficient elevation control can be performed.

  In addition to the effect of the invention of claim 1 or 2, the invention described in claim 3 operates the lift cylinder 6 by moving the grip handle 12 forward or the like when the vehicle is traveling over the heel, etc. Although it can be lowered, if the lift cylinder 6 is not operated and the seedling planting device 8 is not lowered due to an erroneous operation or a failure of the lift cylinder 6 mechanism or the like, an alarm is output to notify the driver. By adopting the configuration, the driver can quickly and accurately detect and respond to an abnormality in the raising / lowering control of the seedling planting device 8, so that it is possible to ensure safety such as a traveling posture over the heel and the work is stagnant. Work efficiency is improved.

  In addition to the effect of the invention according to any one of claims 1 to 3, the invention described in claim 4 includes a grip handle 12 and a seedling traveling that are arranged side by side or adjacent to the front end of the traveling vehicle body 5. When the center marker 13 that serves as a direction indicator is tilted backward when the grip handle 12 is tilted forward, the center marker 13 is rotated backward so as to escape. The work operability can be facilitated because it is less likely to interfere with the work posture, operation, etc., such as overpass travel, which stands and grips and operates the grip handle 12.

(A) Side view of seedling transplanting machine, (b) Partial plan view showing the position to grip the grip handle Block diagram of seedling plant lifting control Part of flowchart for raising and lowering planting device Part of flowchart for raising and lowering planting device Part of flowchart for raising and lowering planting device Side view showing the action of the grip handle Side view showing another example of the operation of the grip handle Plan view of the action of the grip handle Perspective view of lift lock lever Plan view of another embodiment of seedling transplanter Side view of another embodiment of seedling transplanter (A) Side view of cockpit, (B) Front view of cockpit, (C) Plan view of cockpit

  Based on the illustrated example, the seedling transplanter arranges a pair of left and right front wheels 2 that are steered by operating the steering handle 1 and a pair of left and right rear wheels 4 that are driven and rotated by an engine 3 mounted under the driver's seat 14. A seedling planting device 8 is attached to the rear side portion of the vehicle body 5 in the wheel traveling form via the lift link 7 in the parallel link form. This seedling planting device 8 is provided with a frame 9 that slides and leveles the soil surface at the bottom of the seedling planting frame 15, and a seedling tank 11 that accommodates mat seedlings and feeds it to the lower rear side. It is structured to interlock so as to reciprocate in the direction, and the planting device 10 is arranged in the rear part so as to separate and hold the seedling fed from the seedling tank 11 and plant it on the soil surface leveled by each float 9. It is a planting form.

  The vehicle body 5 includes a floor 16, a steering post 17, an engine cover 18, and the like on the upper side, and a front-end T-shaped grip handle 12 is provided around the support shaft 19 so as to be pivotable back and forth. In FIG. 1, a center marker 13 is integrally formed upward from the center of the grip handle 12. An operation lever 20 is provided on one side of the steering post 17, and the seedling planting device 8 can be moved up and down by operating the operation lever 20, or seedling planting transmission can be performed by the seedling planting device 10. . An electric motor M is interlocked with the operation lever 20, and the operation lever 20 is interlocked with the motor M.

  A rear frame 21 is provided at the rear part of the vehicle body 5, the lift link 7 is connected to the rear frame 21 so as to be vertically rotatable, and a lift cylinder 6 that extends and contracts with the vehicle body 5 is provided. Is equipped with a fertilizer application device 22 for fertilizing the seedling planting soil surface of the seedling planting device 8.

  An alarm buzzer 23 is provided on the side of the driver's seat 14 at the rear of the vehicle body 5, and a link switch 24 for detecting the vertical rotation position of the lift link 7 is provided on the rear frame 21. A front / rear inclination sensor 25 for detecting the inclination angle of the direction is provided. The link switch 24 is in the link switch OFF area when the seedling planting device 8 is in the seedling planting position at the lowermost position A, and is in the link switch ON area when in the uppermost position B. The intermediate position is set as the stop position C, and the descent of the seedling planting device 8 can be lowered to the stop position C and automatically stopped.

  Further, a grip switch 26 is provided in the rotation area of the grip handle 12 at the front end of the vehicle body 5. A rear wheel rotation sensor 27 for detecting the rotation speed of the axle portion of the rear wheel 4 is provided. Reference numeral 28 denotes a controller for raising and lowering the seedling planting device 8.

  Here, a seedling planting device 8 is disposed on the rear side of a passenger traveling vehicle body 5 in which a front wheel 2 steered by a steering handle 1 and a rear wheel 4 driven by an engine 3 are arranged via a lift link 7 lifted by a lift cylinder 6. The seedling planting device 8 is lowered by the lift cylinder 6 and the float 9 at the bottom is grounded and ground, and the seedling fed out from the seedling tank 11 by the planting device 10 is separated and planted on the flat soil surface, In a seedling transplanting machine provided with a grip handle 12 for operating the vehicle body 5 at the front end of the vehicle body 5, a seedling transplanting device for lowering the seedling planting device 8 to an appropriate position by tilting the grip handle 12 is operated. The configuration.

  When the seedling transplanter travels over the road or travels on a truck to transport it, the seedling transplanter 8 is moved up and down with respect to the vehicle body 5 by the lift cylinder 6 to move up and down the inclined surface. At this time, an operator or an assistant guides the vehicle body 5 so as to guide and regulate the traveling posture, direction, and the like while holding the grip handle 12 at the front end of the vehicle body 5 and tilting it forward. Then, by the tilting operation of the grip handle 12, the seedling planting device 8 is lowered by the lift cylinder 7, and is lowered to an appropriate position set in advance and automatically stopped.

Therefore, the position of the center of gravity of the vehicle body 5 is lowered and the front end portion of the vehicle body 5 is prevented from rising, and the bottom surface of the seedling planting device 8 or the float 9 is prevented from being damaged due to grounding, collision, or the like.
When the grip handle 12 is rotated forward around the support shaft 19 to operate the traveling state of the vehicle body 5, the grip switch 26 is turned on (step S1). At this time, if the seedling planting device 8 is in the raised position B and the link switch 24 is in the ON position (S2), the electric motor M is driven (S3), and the seedling planting device 8 is lowered to the lift cylinder 6. (S4), the link switch 24 is turned off (S5), and the descent of the seedling planting device 8 is also stopped at the stop position C.

  As described above, when the height of the seedling planting device 8 is higher than the stop (reference) position C, it automatically descends to the reference position C, stops, and lowers the center of gravity of the body of the overpass traveling, To prevent the surface from rising.

Further, while the vehicle body 5 is traveling, the seedling planting device 8 is lowered by detecting the inclination angle in the front-rear direction of the vehicle body 5 larger than a certain value.
When the vehicle body 5 of the seedling transplanting machine is tilted to a certain extent or more in the front-rear direction during traveling, or when tilted, the seedling transplanting device 5 in the raised position at this time is moved to an appropriate position set in advance. It is automatically lowered to lower the center of gravity position of the aircraft and become a stable running posture.

  In order to warn the vehicle to fall on an inclined ground, a detection value of the inclination sensor 25 is input (S10), and further, rotation by the rear wheel rotation sensor 27 is input (S11). The raising / lowering control (S1-S7, S12-S17) of the seedling planting device 8 similar to the above is performed.

  When the inclination angle of the vehicle body 5 in the front-rear direction becomes steep from 10 to 15 degrees or more, the alarm buzzer 23 notifies the inclination state. When traveling with the buzzer 23 ON, the motor M is actuated by the detection of the rear wheel rotation sensor 27 to lower the seedling planting device 8 and lower until the link switch 24 is turned off.

Further, when the lift cylinder 6 cannot be expanded and contracted and the seedling planting device 8 is in a lift lock state in which the lift is not possible, a warning is output.
As described above, when the seedling transplanting machine travels with a large inclination in the front-rear direction, such as in the case of Banetsu, when the rear-mounted seedling transplanting device 8 is in the raised position, the grip handle 12 is tilted to the appropriate position. It is lowered to lower the center of gravity position of the aircraft, but when this seedling planting device 8 is in a lift lock state for any reason and cannot be lowered, this outputs a warning to notify the driver Let

  In particular, there is a case where the lift cylinder 6 for raising and lowering the seedling planting device 8 is caused to become inoperable and the raising and lowering operation is locked. In this case, for example, an operation mechanism for causing the lift cylinder 6 to extend and contract. When the control time from the above operation to the expansion / contraction operation of the lift cylinder 6 elapses a preset scheduled time, an alarm buzzer is sounded appropriately and notified.

  The operation lever 20 is operated by the motor M to operate the seedling planting device 8 so as to descend (S30). At this time, if the seedling planting device 8 is in the raised position B and the link switch 24 is in the ON region (S31), the seedling planting device 8 is lowered by the output of the lift cylinder 6, but the link switch 24 is turned on ( The buzzer 23 continues to sound until the link switch 24 is turned off (S33, S34) for a certain time (for example, 5 seconds) (S32).

Further, by tilting the grip handle 12 forward, the center marker 13 provided adjacent to the grip handle 12 is rotated rearward.
As described above, the grip handle 12 provided at the front end portion of the vehicle body 5 grips this and moves it to the front side to control and guide the traveling state of the vehicle body 5 when traveling over the coast. When tilted to the front side, the adjacent or side-by-side upright center marker 13 is pivoted so as to tilt to the rear side, so that it does not interfere with the operator operating on the front part of the vehicle body 5.

When the grip handle 12 is returned to the original position, the center marker 13 is also returned to the upright position.
As shown in FIG. 6, the lower end portion of the center marker 13 is connected to the upper end portion of the grip handle 12 so as to be capable of pivoting back and forth, and a link is established between the intermediate portion 28 of the center marker 13 and the front end upper portion 29 of the vehicle body 5. It connects with the rod 30, and it is set as a parallel link mechanism form. When traveling over the heel, when the grip handle 12 is gripped and tilted forward, it is pulled by the link rod 30 and the center marker 13 is rotated rearward.

  As shown in FIGS. 7 and 8, the link rod 30 may be formed in a quadrilateral shape in a side view connected to the upper portion of the steering post 17 or the like without being configured in parallel with the grip handle 12. The link rod 30 on the upper side of this quadrilateral shape can be formed short to increase the rear side tilt angle of the center marker 13.

  Next, mainly based on FIG. 9, the lift lock lever 33 is rotated back and forth in the operation box 32 arranged on the side of the driver's seat 14 to operate the lift justice tail valve of the hydraulic circuit of the lift cylinder 6. A lighting lamp 35 is provided at the front end of the lever guide 34 of the lift lock lever 33 so that the lamp 35 is turned on when the lift lock lever 33 is at the hydraulic lock R position. When the lift lock lever 33 is in the hydraulic lock R, the lift control valve of the hydraulic circuit is in the closed position and the lift cylinder 6 is not expanded or contracted.

  Next, mainly based on FIGS. 10 and 11, the steering post 17 is provided with an HST lever 36 for operating the HST as a main transmission for transmitting the rear wheel 4, the seedling planting device 8 and the like. During the normal seedling planting operation, the driver on the driver's seat 14 can operate the HST lever 36 to change speed. When traveling over the heel, the protruding direction of the HST lever 36 is switched to the front side, and a gripping operation is performed from the side on which the grip handle 12 is operated to facilitate a continuously variable transmission operation. The base portion of the HST lever 36 can be attached to the HST interlocking shaft 37 on the steering post 17 side by rotating in a changeable manner in the front-rear direction, and the direction of the HST lever 36 is fixed by tightening the knob 38. Can do.

  An operator standing on the front side of the vehicle body 5 loosens the knob 38, changes the direction of the HST lever 36 from the rear side to the front side, rotates and rotates it, and is simply fixed by tightening the knob 38. It is possible to travel while shifting.

  Next, mainly based on FIG. 12, a part of the driver's seat 14 is changed to a removable block form, and the form of the indication surface can be changed. An attachment hole 40 is formed in the seat base 39, and a grip 42 provided on the lower surface of the seat block 41 laid on the upper surface of the seat base 39 is fitted into the attachment hole 40 and attached.

  In this manner, the seat block 41 can be attached and detached as necessary, so that the selection can be changed to a form adapted to the driving state of the driver, the switching operation can be simplified, and the configuration is inexpensive. be able to.

  In the illustrated example, the side seat portions 43 located on the left and right side portions of the seat base 39 are always fixed, and the seat groove 41 between the side seat portions 43 is fitted into a predetermined form of the seat block 41 so that the bottom surface The protruding click 42 is inserted into the mounting hole 40 formed in the seat base 39 and locked.

  Moreover, such a seat block 41 can be similarly configured in the backrest 45 portion.

DESCRIPTION OF SYMBOLS 1 Handle 2 Front wheel 3 Engine 4 Rear wheel 5 Car body 6 Lift cylinder 7 Lift link 8 Seedling device 9 Float 10 Planting device 11 Seedling tank 12 Grip handle 13 Center marker

Claims (4)

  The seedling planting device (8) is connected to the rear side of the traveling vehicle body (5) in which the front wheel (2) and the rear wheel (4) are arranged via a lift link (7) which is lifted and lowered by a lift cylinder (6), The seedling planting device (8) is lowered by the lift cylinder (6), and the seedlings fed from the seedling tank (11) by the planting device (10) to the leveling soil surface while sliding the bottom float (9) on the ground. In the seedling planting machine in which the grip handle (12) for operating the vehicle body (5) is provided at the front end portion of the vehicle body (5) and the grip handle (12) is tilted and operated, A seedling transplanting machine, wherein the planting device (8) is lowered to an appropriate position.   2. The seedling planting device (8) is moved down by detecting an inclination angle in the front-rear direction of the vehicle body (5) larger than a certain value while the vehicle body (5) is traveling. The seedling transplanter described.   The seedling transplanter according to claim 1 or 2, wherein an alarm is output when the lift cylinder (6) cannot be expanded and contracted and the seedling planting device (8) is in a lift lock state in which the lift is not possible.   The center marker (13) provided adjacent to the grip handle (12) is rotated rearward by tilting the grip handle (12) forward. The seedling transplanter described in 1.

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