JP2016086667A - Seedling transplant device of seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplant device of a seedling transplanter capable of preventing occurence of a section in which a seedling is not planted by notifying of a state in which a seedling cannot be raked out due to mixed objects such as a soil or stone intruding into a planting device.SOLUTION: The seedling transplanter is mounted with a seedling planting part 6, at a rear part of a travel vehicle body 1, the seedling planting part comprising: a seedling tank 3 storing a mat seedling and feeding out the mat seedling to a seedling take-out port 2; and a seedling planting device 5 formed with a planting jaw 4 separating and holding a seedling fed out to the seedling taking-out port 2 and planting the seedling on a soil surface. The planting device 5 includes a seedling jamming sensor 7 capable of detecting a jamming state of a seedling separated and held between electrodes of right/left planting jaws 4, the planting jaws 4 branched into a right/left biforked state and serving as the electrodes. In a sensor circuit 8 of the seedling jamming sensor 7, a rotation sensor 9 is arranged which actuates the seedling jamming sensor 7 by means of a rotation centrifugal action of the planting device 5.SELECTED DRAWING: Figure 5

Description

  The present invention provides an accurate and stable seedling planting work by providing a clogging sensor for detecting a seedling clogging state in a planting claw for separating and holding a predetermined number of seedlings from a mat seedling supplied from a seedling tank and planting it on a soil surface. The present invention relates to a seedling transplanting apparatus that maintains the above.

  At the tip of the seedling transplanting device, a bifurcated planting claw for scraping a predetermined number of seedlings from the seedling outlet of the seedling tank is provided, and a seedling holding member and a planting claw are provided on the front side of the planting claw. A form (for example, refer to Patent Document 1) in which an extruded body or the like for extruding a held seedling onto a soil surface is known.

JP, 2014-124099, A

  In the seedling transplanting device, the mat seedling is fed to the seedling outlet and the planting claw of the bifurcated or trifurcated shape at the tip of the planting device is pierced into the mat seedling and planted. The operation of holding and pushing the root of the mat seedling between the nail tips is repeated every time the planting operation is performed. If it is difficult to separate the seedling from the plant, the seedling is operated to the seedling outlet in the state of seedling clogging held by the planting claw, and the subsequent seedling planting operation cannot be performed accurately There are many cases.

  If the seedling planting operation is continued while the seedling is clogged in such a seedling planting claw, the seedling and the seedling planting device are likely to be damaged and the seedling planting operation is often not performed. The seedling clogging state in the section is detected as soon as possible, and countermeasures are taken.

  The invention according to claim 1 is fed to the rear part of the traveling vehicle body (1), containing the mat seedling and feeding it to the seedling outlet (2), and the seedling outlet (2). In a seedling transplanter equipped with a seedling planting part (6) comprising a planting device (5) for forming and planting nails (4) for separating and holding the seedlings on the soil surface, the planting device ( 5) A seedling clogging sensor (4) that can be separated and held between the electrodes of the left and right planting claws (4) using the planting claws (4) branching into a bifurcated left and right form as electrodes. 7) A seedling transplanting device of a seedling transplanting machine, characterized in that it is configured.

  The mat seedlings stored in the seedling tank (3) are fed to the seedling outlet (2) at the lower end of the rear side along with the seedling planting operation, and the seedling outlet (2) is operated as a downward movement locus. The attaching device (5) is separated and held by the planting claw (4) at the tip.

  The seedling held between the bifurcated branches of the planting claw (4) is inserted into the soil surface to an appropriate depth by the downward movement of the planting claw (4), and the planting claw (4 ) Is pulled upward to leave the seedlings in the planting position, and the seedling planting action is continued. Since the planting claw (4) that has finished this planting action has no residue between the bifurcated branching forms, when the seedling outlet (2) part is lowered by the operation of the subsequent planting process, The seedling fed out to the outlet (2) part can be pierced and separated and held accurately.

  And in a state where a part of the seedling (a seedbed part, a foreign matter such as stone gravel, a piece of wood, etc.) is sandwiched at a branch part between the planting claws (4) rotated and returned to the seedling outlet (2) part In some cases, an energizing action is performed between the electrodes of the branching nail (4), and the seedling clogging sensor (7) detects a clogging state by this energization.

  When the seedling clogging sensor (7) detects the seedling clogging, the transmission of the planting device (5) is stopped, and the foreign matter and the like clogged at the branching portion of the planting claw (4) are removed, and normal The operation can be continued as a proper seedling planting posture.

  According to a second aspect of the present invention, the sensor circuit (8) of the seedling jam sensor (7) is provided with a rotation sensor (7) that operates the seedling jam sensor (7) by the rotational centrifugal action of the planting device (5). 9. The seedling transplanting device for a seedling transplanting machine according to claim 1, wherein 9) is provided.

  When the planting device (5) is driven to transmit, the centrifuge sensor (7) of the sensor circuit (8) is brought into a detection operation state by detecting the rotation centrifugal force action by the rotation sensor (9), and the rotation sensor ( When 9) does not detect the rotation of the planting device (5), the clogging sensor (7) is not used.

That is, when the rotation sensor (9) detects the centrifugal force due to the operation of the planting device (5), the seedling clogging sensor (7) is in a detection state.
According to a third aspect of the invention, the seedling clogging sensor (7) continuously detects that a seedling is in a holding state between the left and right planting claws (4) for a predetermined time or longer, thereby providing an alarm ( The seedling transplanting device of the seedling transplanting machine according to claim 1 or 2, wherein 10) is operated.

  In the sensor circuit (8) for outputting the alarm (10) by detecting the seedling clogging state of the seedling clogging sensor (7), a timer or the like is provided so that the time during which the planting claw (4) is in the seedling holding state is provided. After the planting claw (4) has planted seedlings on the soil surface, as the time of the operation stroke interval just before returning to the seedling outlet 2, the seedling holding state during this time should not be detected as "clogged state" By detecting continuously for the predetermined time or more at this time, it is output as a “clogged state”.

  Therefore, if the seedling clogging sensor (7) releases the clogging before the predetermined time elapses, the planting claw (4) is operated to the seedling extraction outlet 2 without operating the alarm (10), and the seedling is extracted. Continue to separate, hold and plant.

  The invention according to claim 4 includes a seedling tank 3 that accommodates mat seedlings in the rear part of the traveling vehicle body (1) and feeds the seedlings to the seedling outlet (2), and the seedling tank (2). In the seedling transplanter equipped with a seedling planting part (6) comprising a planting device (5) for forming and planting a planting claw (4) for separating and holding the planted seedling, the planting claw (4) and a seedling extruding fork (11) which moves up and down along the front side of the planting claw (4) and extrudes the seedling separated and held by the planting claw (4) downward to plant it on the soil surface. And a seedling clogging sensor (70) capable of detecting the seedling clogging state of the seedling held between the front and rear planting claws (4) and the extrusion fork (11). The seedling transplanting device of the seedling transplanting machine.

  In the form of the seedling pushing fork (11) for pushing and planting the seedlings that are moved up and down along the front side of the seedling planting claws (4) to the soil surface, these planting claws (4) And a seedling pusher fork (11) as an electrode, and a seedling clogging sensor (70) for detecting the seedling clogging state of the seedling held between them, the seedling clogging detection region regardless of the seedling clogging form To make detection stable and perform stable detection.

In the seedling clogged state, the operation of the extrusion fork (11) to the tip end side of the planting claw (4) becomes impossible. When such a seedling clogging state is detected, an alarm (10) is notified.
According to a fifth aspect of the present invention, the continuously-running hydraulic continuously variable transmission device (7), wherein the seedling clogging sensor (7, 70) continues the traveling state for a predetermined time or more while detecting the seedling clogging state ( The driving of 12) is automatically stopped, or the traveling is automatically stopped by returning to the neutral position through deceleration traveling by the hydraulic continuously variable transmission (12). The seedling transplanting device of the seedling transplanting machine described in the section.

  When the seedling clogging sensor (7) or (70) detects the seedling clogging state, the hydraulic continuously variable transmission (12) is driven by continuing the running state for a predetermined time or longer in this state. Stop automatically. Alternatively, the traveling is automatically stopped by returning to the neutral position by the deceleration operation traveling by the trunnion shaft of the hydraulic continuously variable transmission (12).

  In the invention according to claim 6, the seedling clogging sensor (7, 70) continues the seedling planting transmission state of the seedling planting part (6) for a predetermined time or more while detecting the seedling clogging state. The seedling transplanting device for a seedling transplanting machine according to any one of claims 1 to 5, wherein the hydraulic continuously variable transmission (12) is automatically decelerated.

  By continuing the seedling planting transmission state of the seedling planting part (6) for a predetermined time or longer while the seedling jam sensor (7) or (70) has detected the seedling jamming state, the hydraulic continuously variable transmission ( 12) is automatically decelerated.

  The invention described in claim 1 includes a seedling clogging sensor (7) for providing an electrode to the bifurcated planting claw (4) of the planting device (5) and energizing the seedling by clogging the seedling to notify the seedling state. Because it is provided, the configuration is simplified and the seedling is not easily changed in the form of the planting claw (4), which makes resistance for seedling planting. It is possible to detect the seedling clogging state of the planting device (5) quickly and at an early stage, thereby reducing the planting missing state.

  Moreover, since it constitutes the electrode for the clogging sensor (7) in the bifurcated interval portion of each planting claw (4) of the planting device (5), in the seedling transplanting device in the multi-row planting form, The state of seedling clogging for each planting strip can be detected, and an accurate and orderly seedling planting operation can be smoothly performed to increase seedling planting work efficiency.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 detects the centrifugal force due to the operation of the planting device (5) by the rotation sensor (9), thereby detecting the seedling clogging sensor (7 ) To detect the seedling clogging state, the on / off switch of the seedling clogging sensor (7) becomes unnecessary, so that the configuration can be simplified and the number of parts can be reduced.

  In addition to the effect of the invention described in claim 1 or 2, the invention described in claim 3 is a seedling planting each time the planting claw (4) is driven to rotate once by the interlocking rotation of the planting device (5). A claw (4) separates and holds the seedlings at the seedling outlet (2) and is planted on the lower soil surface. This planting descent interval is not detected by the clogging sensor (7) even if the seedling is held between the planting claws (4). When the above-mentioned continuous seedling holding state (clogging state) is detected, the clogging sensor (7) can detect the clogging state and output the alarm (10).

  In this way, the seedling holding time and timing held by the planting claw (4) can be appropriately determined by the rotation operating angle of the planting device (5), the operation timer, etc. It can be simplified and malfunction can be prevented.

  The invention according to claim 4 is the extrusion fork (11) provided with the seedling clogging sensor (70) between the rear planting claw (4) and the front seedling fork (11). The operator can be informed of the state where the seedling is not pushed out even if the seedling is pushed in, so that the operator can quickly know the seedling clogging and foreign matter clogging in the planting claw (4), Replanting can be reduced.

Moreover, the exact operation | movement of a seedling extrusion fork (11) can be maintained, and a seedling planting attitude | position can be ordered and stabilized.
In addition to the effect of the invention described in any one of claims 1 to 4, the invention described in claim 5 is in spite of the fact that seedling clogging is detected by the seedling clogging sensor (7) or (70). When the seedling planting operation is continued, the output of the hydraulic continuously variable transmission (12) is forcibly reduced to stop it, so that the section where the seedling is not planted and the stroke can be suppressed. It is possible to reduce supplementary planting by manual work later, and to reduce labor.

  In addition to the effect of the invention according to any one of claims 1 to 5, the invention described in claim 6 remains in a state where the seedling clogging sensor (7) or (70) detects the seedling clogging state. By continuing the seedling planting transmission state of the seedling planting part (6) for a predetermined time or longer, the vehicle returns to the neutral position through the deceleration running by the hydraulic continuously variable transmission (12) and automatically stops running.

  Accordingly, when the traveling is stopped due to seedling replenishment or the like, and the seedling is clogged, the output of the hydraulic continuously variable transmission (12) is lowered, so that the planting device (5) Since it is possible to prevent the planting operation of the seedlings with the seedling clogging occurring, it is possible to reduce the seedling planting streak portion.

Top view of seedling transplanter Side view of seedling transplanter Side view of planting device Plan view of planting device Front view (A), (B) of planting claw and block circuit diagram (C) of clogging sensor Side view (A) and sectional view (B) of planting claw Flow chart when clogging sensor is detected Arrangement side view of hydraulic continuously variable transmission (A) Front view showing storage state of drawing marker and seedling tank rail guard, (b) Front view showing working state of drawing marker and seedling tank rail guard, (c) Operation switching device for left and right drawing markers. Main part plan view

  Based on the drawings, a steering wheel 32 and a steerable front wheel 33 and a rear wheel 34 are arranged, and a lift cylinder is provided at the rear part of the traveling vehicle body 1 in the form of a raised floor and capable of driving four wheels on the front and rear wheels. The seedling transplanting device 6 is mounted on the rolling shaft 37 and the hitch link 38 at the rear end of the lift link 15 via the lift link 15 that is moved up and down by the expansion and contraction of the 35.

  An engine 39 is mounted on the upper part of the vehicle body 1, and a driver's seat 16 is disposed on the upper side of an engine cover 40 that covers the engine 39. The engine cover 40, the front dashboard 41, and the center floor therebetween The side floor 29 is arranged at a height position that covers the upper side of the front wheel 33 over both the left and right sides such as 42, and the rear side of the driver's seat 16 is located above the rear wheels 34 on the left and right sides. A rear floor 13 is formed between the upper portions of the fenders 43 covering the left and right ends, and both left and right end portions are connected to the rear end portions of the side floor 29. An elevating step 36 is provided on the side floor 29 located on the side of the driver's seat 16.

  A transmission case 44, a front axle housing 45 for mounting the front wheel 33 on both right and left sides, a hydraulic continuously variable transmission 12 and the like are arranged at the front portion of the vehicle body 1, and the hydraulic pressure is continuously removed from the engine 39. By driving the step transmission 12, the front wheel shaft 33 axis of the front axle housing 45 is transmitted via the gear of the transmission case 44, and the rear wheel 34 interlocking shaft 49 extending from the transmission case 44 to the rear axle housing 47 is transmitted. Thus, the rear wheel 34 can be driven to rotate.

Further, the PTO shaft 48 is taken out from the mission case 44, and the input shaft 50 of the seedling transplanting device 6 and the fertilizer application device 14 on the rear floor 13 are interlocked.
The seedling transplanting device 6 has a seedling tank 3 for supplying seedlings, a planting device 5 for planting seedlings, and the like in the form of four to eight plants in the traveling width direction of the traveling vehicle body 1. So as to perform seedling planting work in a wide area. The seedling transplanting device 6 has a planting case 52 mounted on both sides from a planting transmission case 51 that is widely formed on both right and left sides with the rolling shaft 37 as the center of the lateral width. A planting device 5 in the form of a double crank mechanism is mounted on the outer side, and a planting claw 4 formed at the tip is driven to rotate up and down along a planting locus line D that is substantially elliptical in side view.

  By passing the seedling outlet 2 formed in the seedling tank 3 guide rail 19 through the process of descending from the upper end of the planting locus line D, the mat seedling fed out to the seedling outlet 2 is separated and held, By passing through the seedling outlet 4 of the guide rail 87, the mat seedling fed to the seedling outlet 2 can be separated and held, and the lower soil surface can be planted.

  A center float 17 and a side float 18 are disposed below each planting device 5, and rotate up and down around the float shaft 55 of the float arm 54 protruding from the planting frame 53. Swings in the vertical direction.

  The surface of the planted soil to be planted by each planting claw 4 is leveled by the sliding rocking of the soil surfaces of these floats 17 and 18, and more particularly than the predetermined by the sliding rocking of the center float 17 at the center. When a large change in the soil surface depth is detected, the control valve of the hydraulic circuit of the lift cylinder 35 is operated, and the lift link 15 is moved up and down by the expansion and contraction of the lift cylinder 35 to move the seedling transplanting device 6 up and down. The seedling planting depth is controlled to be constant.

  In addition, on the front side of the seedling transplanting device 6, a cut-off row 56 is arranged on the front side of each of the floats 17 and 18, and the soil surface roughened by the rear wheels 34 and the like is interlocked by the interlocking shaft 57. It will be leveled out in the last stroke.

  A fertilizer application 14 is mounted on a rear frame 58 supported by a lift link 15 provided at the rear end of the vehicle body 1. The fertilizer application device 14 has a fertilizer hopper 21 that accommodates fertilizer made of granules at the upper end, and a feeding device 60 that guides fertilization to a fertilizer groove formed on the soil surface on which the floats 17 and 18 slide. Alternatively, a fertilizer pipe 61, fertilizer hose 62, and the like are disposed.

  The fertilizer pipe 61 communicates with the air duct 63, and fertilizes the fertilizer in each fertilizer hose 62 to the fertilizer groove on the soil surface by the wind pressure sent from the air duct 63. The fertilizer hopper 21 is formed widely across the entire width of the rear floor 13 and is opposed to the multi-row planting width region of the seedling transplanting device 6. A hopper opening that is opened in series is formed at the upper end of the fertilizer application hopper 21, and a single plate-like hopper lid 20 that opens and closes is provided on the upper side of the fertilizer hopper 21 by a hinge.

  An auxiliary seedling mounting shelf 65 for storing auxiliary seedlings to be replenished to the seedling tank 3 and an auxiliary seedling mounting shelf frame 67 are arranged on both left and right sides of the front end portion of the vehicle body 1. A plurality of auxiliary seedling placement shelves 66 are provided on the upper portion of the auxiliary seedling placement shelf frame 67 erected on the outer end of the side floor 29, and mat seedlings can be placed and transported.

  When the upper seedling rack 65 is pivotally moved back and forth via the support link 68 and rotated forward, the upper seedling rack 65 is connected to the front side of the lower seedling rack 66 and moved in the front-rear direction. A long series of seedling mounting shelves is formed to facilitate the loading work of mat seedlings from the front part position outside the machine.

  In addition, a sub-floor 69 of the extended surface of the side floor 29 is formed at the lower side of the auxiliary seedling shelves 65 and 66 or at the same height as the front end surface of the side floor 29 to accommodate mat seedlings. An empty seedling box can be held, or a fertilizer bag containing fertilizer can be placed. Reference numeral 72 denotes a handle for moving the upper seedling mounting shelf 65 back and forth.

  Here, in the rear part of the traveling vehicle body 1, a mat seedling is accommodated and the seedling tank 3 fed to the seedling outlet 2 part and the seedling fed to the seedling outlet 2 part are separately held and planted on the soil surface. In a seedling transplanting machine equipped with a seedling transplanting device 6 comprising a planting device 5 for forming a planting claw 4, the planting device 5 uses the planting claw 4 branching into a left and right bifurcated shape as electrodes. The seedling transplanting device of the seedling transplanting machine is characterized in that the seedling jamming sensor 7 capable of detecting the seedling jamming state separated and held between the electrodes of the left and right planting claws 4 is configured.

  The mat seedling accommodated in the seedling tank 3 is fed to the seedling outlet 2 at the lower end of the rear side in accordance with the seedling planting operation. It is separated and held by the planting claw 4. The seedling held between the bifurcated branches of the planting claw 4 is inserted into the soil surface to a suitable depth by the downward movement of the planting claw 4, and the planting claw 4 is pulled out upward. The seedling planting action is continued by leaving the seedling in the planting posture position. Since the planting claw 4 having finished this planting action has no residue between the bifurcated branching forms, this withdrawal port 2 is also used when the seedling removal port 2 is lowered during the subsequent planting operation. It is possible to accurately pierce and separate and hold the seedlings fed to the section.

  And when it is in the state where a part of seedlings (foreign matter such as a seedbed part, stone gravel, wood pieces, etc.) is sandwiched between the branching parts between the planting claws 4 rotated and returned to the 2 part of the seedling outlet, An energization action is performed between the branched electrodes of the planting claw 4, and the seedling clogging sensor 7 detects a clogging state by this energization.

  When the seedling clogging sensor 7 detects the seedling clogging, the transmission of the planting device 5 is stopped, the foreign matter etc. clogged in the branching portion of the planting claw 4 is removed, and a normal seedling planting posture is obtained. Work can be continued.

The sensor circuit 8 of the seedling clogging sensor 7 is provided with a rotation sensor 9 that operates the clogging sensor 7 by the rotational centrifugal action of the planting device 5.
When the seedling planting device 5 is driven to drive, the rotation sensor 9 detects the rotation centrifugal force action, and the clogging sensor 7 of the sensor circuit 8 is in the detection operation state, and the rotation sensor 9 rotates the planting device 5. When not detected, the inspection by the clogging sensor 7 is not performed. That is, when the rotation sensor 9 detects the centrifugal force due to the operation of the planting device 5, the seedling clogging sensor 7 is in a detection state.

The clogging sensor 7 operates the alarm 10 by continuously detecting that a seedling is in a holding state between the left and right planting claws 4 for a predetermined time or more.
In the sensor circuit 8 that outputs the alarm 10 by detecting the seedling clogging state of the clogging sensor 7, a timer or the like is provided so that the time during which the planting claw 4 is in the seedling holding state is set on the soil surface. Even after seedling planting, as the time of the operation stroke interval immediately before returning to the seedling outlet 2, the seedling holding state during this time is not detected as “clogged state”, but continuously detected over a predetermined time at this time By doing so, it is output as a “clogged state”.

  Therefore, if the clogging sensor 7 releases clogging before the predetermined time elapses, the planting claw 4 is operated to the seedling extraction outlet 2 without operating the alarm 10 to separate, hold and plant the seedling. Continue operation.

  Further, a seedling tank 3 that accommodates mat seedlings at the rear part of the traveling vehicle body 1 and feeds the mat seedlings to the seedling outlet 2 part, and a planting that separates and holds the seedlings fed to the seedling outlet part 2 and planted on the soil surface. In a seedling transplanting machine equipped with a seedling transplanting device 6 composed of a planting device 5 that forms the attached nail 4, the planting nail 4 is moved up and down along the front side of the planting nail 4 and planted. The seedling clogged state of the seedlings held between the front and rear planting claws 4 and the extrusion fork 11 is formed by using the seedling extrusion fork 11 that extrudes the seedling separated and held by the claw 4 and planting it on the soil surface. The seedling transplanting apparatus of the seedling transplanting machine that constitutes the detectable seedling clogging sensor 70 is configured.

  In the form of the seedling extrusion fork 11 that pushes and holds the seedling that is moved up and down along the front side of the seedling planting claw 4 to plant the soil, the planting claw 4 and the seedling extrusion fork 11 are The electrode is a seedling clogging sensor 70 for detecting the seedling clogging state of the seedling held between them, and the detection area of the seedling clogging is widened regardless of the seedling clogging form to reduce detection omission. , Make stable detection. In the seedling clogged state, the pushing fork 11 cannot be operated to the tip end side of the planting claw 4. When such a seedling clogging state is detected, the notification device 10 notifies the user.

  Further, the seedling clogging sensor 7 or 70 automatically stops the driving of the hydraulic continuously variable transmission 12 that transmits power by continuing the running state for a predetermined time or more while the seedling clogging state is detected, or After decelerating by the hydraulic continuously variable transmission 12, the vehicle returns to the neutral position and automatically stops.

  When the seedling clogging sensor 7 or 70 detects a seedling clogging state, the seedling transplanting machine automatically stops driving the hydraulic continuously variable transmission 12 by continuing the running state for a predetermined time or longer in this state. . Alternatively, the traveling is automatically stopped by returning to the neutral position by the deceleration operation traveling by the trunnion shaft of the hydraulic continuously variable transmission 12.

  Furthermore, the hydraulic continuously variable transmission 12 is automatically decelerated by continuing the seedling transplanting state of the seedling transplanting device 6 for a predetermined time or longer while the seedling jamming sensor 7 or 70 detects the seedling jamming state. .

  The hydraulic continuously variable transmission 12 is automatically decelerated by continuing the seedling transplanting state of the seedling transplanting device 6 for a predetermined time or longer while the seedling jam sensor 7 or 70 detects the seedling jamming state.

  A guide rail 19 for moving and guiding the seedling tank mouth portion in the lateral direction is provided at the rear lower end portion of the seedling tank 3, and the seedling in which the planting claws 4 of the planting devices 5 intervene in the guide rail 19. An outlet 2 is formed. The left and right ends of the guide rail 19 are longer than the lateral width of the laterally moving seedling tank 3, and can be guided over the outer end portion of the laterally moving seedling tank 3.

  Further, the planting device 5 driven and rotated in the form of the double crank mechanism has a center portion of the planting case 52 pivoted at the rear end of the planting transmission case 51 by a planting interlocking shaft 22 in the horizontal direction. It is mounted and rotated around this interlocking shaft 22. A planting arm (finger arm) 23 having a planting claw 4 and an extrusion fork 11 is attached to an arm shaft 24 at both front and rear end portions of the planting case 52. The planting posture in rotation of the attached arm 23 is kept constant.

  Each planting arm 23 is provided with a right and left bifurcated planting claw (planting finger) so as to be detachable by a set bolt 25, and the tip portion protrudes rearward and downward. An extrusion fork 11 that moves up and down along the front side portion is formed at the lower end of a fork rod 26 that is vertically operated by a spring 27 and a cam lever 28 that is operated by a cam of the arm shaft 24.

  An inconstant speed gear mechanism 28 is arranged in the planting case 52 that rotates around the interlocking shaft 22, and the planting locus line D of the planting claw 4 is high in the descending stroke and low in the ascending stroke. It is set to work. The planting claw 4 forms a side edge 30 in such a form that the left and right outer edges protrude forward along the vertical direction, and the front end of the extrusion fork 11 faces the front side.

  In the form in which the planting claws 4 are separated into left and right to form the mounting interval 31 (see FIG. 4- (A)), the pair of left and right planting claws 4 are used as + and − electrodes, and the battery 73 is turned on by vibration. The rotation (vibration) sensor 9 and the sensor circuit 8 including the alarm device 10 are configured, and the seedling holding interval 75 between the planting claws 4 is clogged with seedlings, soil, and the like 76 (FIG. 7, steps S1 and S2). Then, an electric current passes through the filled seedling 76 and the like (S3, S4), and the alarm device 10 is notified (S5).

  Moreover, although the said planting nail | claw 4 is bifurcated and withered between the front-end | tip parts and forms the holding | maintenance space | interval 75, in the form (refer FIG. 4- (B)) whose base side is an integral structure, the planting claw 4 And the sensor circuit 8 as shown in FIG. 5A can be configured with the + and − electrodes between the front and rear extrusion forks 11 (S10). The sliding portion 75 on the side of the planting arm 23 is brought into sliding contact with the portion of the fork rod 26 that moves to form the sensor circuit 8.

A seedling, soil, etc. are hold | maintained between the planting nail | claw 4 and the extrusion fork 11 of the front side, an electric current flows into the sensor circuit 8, and the alarm device 10 act | operates.
When the planting claw 4 is planted along the planting locus line D, it descends from this upper fulcrum position, separates and holds the seedling through the seedling outlet 2, and the extrusion fork 11 The rotation of the planting process in which the seedling is planted on the soil surface by the pushing action is fast. When this rotational speed is detected by the rotation sensor 9, the switch of the sensor circuit 8 is turned on and the alarm 10 is activated. . When the planting claw 4 rotates in a process of ascending from the lower fulcrum position, the rotation becomes low speed, and the sensor 10 is turned off by detecting the low speed rotation by the rotation sensor 9 and the alarm 10 is stopped.

  In addition, the notification of seedling clogging by the notification device 10 is sufficient if the seedling clogging state can be detected when the planting claw 4 is rotated back to the position near the upper fulcrum position in the ascending process of the planting claw 4. In this form, even if the rotation sensor 9 detects the number of rotations and the rotation position, so as not to output the seedling notification during the phase stroke until the planting claw 4 reaches the position before the upper fulcrum, It is also possible to provide a delay timer in the output circuit of the alarm device 10 of the sensor circuit 8.

  Instead of the clogging sensors 7 and 70 that notify the alarm device 10 by energization between the electrodes, a strain sensor composed of a load cell or the like is provided in the attachment interval portion 31 between the left and right planting claws 4 or planting claws. 4 and the planting arm 23 part, the seedling holding pressure acting on the planting claws during the seedling planting operation can be detected to detect the seedling clogging state (S20).

  The hydraulic continuously variable transmission 12 driven from the engine 39 is provided with an HST lever 80 for operating the trunnion shaft on the side of the handle 32 so as to be capable of shifting operation. In addition, a brake pedal 81 for applying a brake to the front wheel 33 and the rear wheel 34 is provided at the front portion of the center floor 42. A cylinder motor 83 is provided on the plate 82 of the brake pedal 81, and when an emergency stop button (switch) 85 provided on the arm over arm 84 at the front end of the vehicle body 1 is pressed, the cylinder motor 83 pulls the plate 82 and brakes. The pedal 81 is actuated to the depressed position, and the brakes of the front and rear wheels 33 and 34 are applied. When the emergency stop button 86 is pressed to stop the engine 39, the aircraft is prevented from moving due to an inclination or the like. Further, when the HST lever 80 is operated to the neutral position, the connecting wire 86 pulls the plate 82 to rotate the brake pedal 81 to the depressed position so that the front and rear wheels 33 and 34 are braked. .

  On the left and right outer sides of the seedling transplanting device 6, a drawing marker 87 for performing a drawing action on the adjacent soil surface as a target for seedling planting work in the next stroke, and a guide rail 19 projecting outward widely. A guard arm 88 that protects the end portion of the drawing marker 87 is provided around the support shaft 89 in the front-rear direction so as to be switched in and out. A rack gear is provided on the rotation shaft portion of the drawing marker 87, and the guide arm 88 is provided. In this embodiment, a pinion gear 90 that meshes with the rack gear is provided, and when the drawing marker 87 is rotated to the upper storage position, the guide arm 88 is rotated upward by the rotation of the pinion gear 90.

  The left and right drawing markers 87 and the guide arm 88 are rotated in directions opposite to each other between the action position approaching the soil surface and the storage position rising upward by the reciprocating stroke of the seedling transplanter. Since the guard arm 88 is in the low position, the tip of the key-shaped bend is turned approximately 90 degrees so as to turn rearward A at the operating position and project outward B at the storage position.

DESCRIPTION OF SYMBOLS 1 Vehicle body 2 Seedling outlet 3 Seedling tank 4 Planting claw 5 Planting device 6 Seedling transplanting device 7 Seedling clogging sensor 8 Sensor circuit 9 Rotation sensor 10 Alarm 11 Seedling extrusion fork 12 Hydraulic continuously variable transmission 70 Seedling clogging sensor

Claims (6)

In the rear part of the traveling vehicle body (1), mat seedlings are stored and seedling tanks 3 fed to the seedling outlet (2) part and seedlings fed to the seedling outlet (2) part are separated and held and the soil surface In a seedling transplanter equipped with a seedling planting part (6) consisting of a planting device (5) and a planting claw (4) for planting,
The planting device (5) can detect the state of seedling clogging separated and held between the electrodes of the left and right planting claws (4), using the planting claws (4) branched into a bifurcated left and right shape as electrodes. A seedling transplanting device for a seedling transplanting machine, characterized in that the seedling jamming sensor (7) is configured.   The sensor circuit (8) of the seedling jam sensor (7) is provided with a rotation sensor (9) for operating the seedling jam sensor (7) by the rotary centrifugal action of the planting device (5). The seedling transplanting device of the seedling transplanting machine according to claim 1.   The seedling clogging sensor (7) operates the alarm (10) by continuously detecting that a seedling is in a holding state between the left and right planting claws (4) for a predetermined time or more. The seedling transplanting device of the seedling transplanting machine according to claim 1 or 2. In the rear part of the traveling vehicle body (1), mat seedlings are stored and seedling tanks 3 fed to the seedling outlet (2) part and seedlings fed to the seedling outlet (2) part are separated and held and the soil surface In a seedling transplanter equipped with a seedling planting part (6) consisting of a planting device (5) and a planting claw (4) for planting,
The planting claw (4) and the seedling extrusion that moves up and down along the front side of the planting claw (4) and extrudes the seedling separated and held by the planting claw (4) downward to plant it on the soil surface Using the fork (11) as an electrode, the seedling clogging sensor (70) capable of detecting the seedling clogging state of the seedling held between the front and rear planting claws (4) and the extrusion fork (11) is configured. A seedling transplanting device for a seedling transplanting machine.   The seedling clogging sensor (7, 70) automatically stops the driving of the hydraulic continuously variable transmission (12) that transmits power by continuing the traveling state for a predetermined time or more while detecting the seedling clogging state. The seedling of the seedling transplanter according to any one of claims 1 to 4, wherein the seedling transplanter is automatically stopped after returning to a neutral position through deceleration traveling by the hydraulic continuously variable transmission (12). Transplant device.   By continuing the seedling planting transmission state of the seedling planting part (6) for a predetermined time or longer while the seedling jam sensor (7, 70) has detected the seedling jamming state, the hydraulic continuously variable transmission (12) is The seedling transplanting device for a seedling transplanting machine according to any one of claims 1 to 5, wherein the seedling transplanting apparatus performs automatic deceleration.

Images