JP2007222029A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling transplanter in which a contact type seedling box detection sensor is disposed on the conveyance upstream side of an interception tine for once stopping the conveyance of a seedling box to relax the contact impact of the seedling box with the interception tine by the contact resistance of the sensor itself with the seedling box, thereby preventing the breakage of the seedling box. <P>SOLUTION: This seedling transplanter for taking out a seedling from a prescribed seedling takeout position P of a seedling conveyance route 31 to transplant the seedling in a field is characterized by disposing a seedling box supply portion and a main conveyance portion 31 having the seedling takeout position P in the seedling conveyance route 31, supplying a seedling box in the seedling box supply portion to the main conveyance portion 31 with a seedling box supply device, synchronously operating the seedling box supply portion on the basis of a detection result, when the absence of a seedling box is detected with a contact type seedling box detection sensor SW4 disposed in the main conveyance portion, disposing an interception tine 63 for once stopping the conveyance of the seedling box on the conveyance downstream side of the seedling box supply device and on the conveyance upstream side of the seedling takeout position, and placing the contact action portion t of the seedling box detection sensor SW4 between the conveyance upstream side and the downstream side of the action position of the interception tine 63. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seedling transplanter that takes out seedlings from a predetermined seedling extraction position on a seedling box conveyance path and transplants them into a field, and belongs to the technical field of agricultural machinery.

The technique described in Patent Document 1 is such that the seedling box supplied and transferred on the transport path is temporarily stopped at a position on the upper side of the transport than the seedling box feeding means, and the seedling box blocking claw provided on the upper side of the support claw is provided. Send the seedling box again only when it is in the receiving state, be sure to receive the seedling box with the seedling box blocking claw, and then send the received seedling box toward the preceding seedling box supported by the supporting claws In this way, a large impact is not given to the seedling box.
Japanese Patent Laid-Open No. 2003-23821

  The object of the present invention is to provide a contact type seedling box detection sensor on the upper side of the transfer of the blocking claw that temporarily receives the transfer of the seedling box, thereby mitigating the impact that the seedling box hits the blocking claw by the contact resistance of the sensor itself to the seedling box And to prevent the seedling box from being damaged.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the present invention according to claim 1 is a seedling transplanting machine that takes out seedlings from a predetermined seedling extraction position (P) of the seedling box transport paths (30), (31) and transplants them into a field. , A seedling box supply section (30), (30) and a main transfer section (31) having a seedling extraction position (P), and supply the seedling boxes in the seedling box supply sections (30), (30) The apparatus (29) is configured to supply to the main transport unit (31). When the contact type seedling box detection sensor (SW4) provided in the main transport unit detects that there is no seedling box, the supply device is based on the detection result. (29) is configured so as to operate, and a blocking claw (63) for temporarily receiving the transfer of the seedling box from the seedling extraction position is provided on the conveyance lower side of the seedling box supply device on the conveyance lower side, Position the contact acting part (t) of the seedling box detection sensor (SW4) from the upper transport side to the lower transport side. And wherein the are.

  The seedling box is transported along a predetermined transport path to the seedling extraction position (P), and the seedlings in the horizontal row of the seedling box are taken out at the seedling extraction position and planted in the field. When the rear end of the seedling box during seedling removal comes close to the position immediately before the seedling extraction position, the seedling box detection sensor (SW4) detects that there is no seedling box, and based on this detection result, the seedling box supply device (29) The next seedling box is fed out by the operation of. And just before this supplied seedling box is received by the blocking claw (63), it will be braked by the contact resistance with the contact type detection sensor (SW4), and the falling speed when received by the blocking claw is reduced. This can prevent the seedling box from being damaged.

  In short, according to the present invention, since the seedling box receives contact resistance before the seedling box hits the blocking claw with the seedling box detection sensor, the transfer speed can be reduced, and damage to the seedling box and disturbance of the seedling in the seedling box can be prevented, The planting accuracy can be improved.

An embodiment of the present invention will be described with reference to the drawings.
A seedling transplanter 1 for carrying out the present invention is an eight-row fertilizer planter, in which a seedling planting portion 4 is mounted on a rear side of a riding traveling vehicle body 2 via a link device 3 so as to be movable up and down. 2 is provided with a fertilizer hopper 5a of the fertilizer application device 5 and a fertilizer feeding device 5b for feeding the fertilizer for each strip.

  The traveling vehicle body 2 includes a pair of left and right steerable front wheels 6 and 6 that are driven to rotate, and a pair of left and right rear wheels 7 and 7 that are driven to rotate, and a transmission case 9 on the front side on the front and rear frame 8 and an engine E on the rear side. The rotational power of the engine E is transmitted into the transmission case 9 through the first belt transmission device 10 and the second belt transmission device 11. The power shifted by the transmission in the transmission case 9 is transmitted to the front wheels 6 and 6 and the rear wheels 7 and 7, and to the seedling planting section 4 via the transmission shaft 9a, the intermediate gear case 9b, and the transmission shaft 9c. It is transmitted. A steering handle 12 for steering the front wheels 6 and 6 is provided on the front side of the vehicle body 2, and a control seat 13 on which a driver is seated is provided on the rear side of the handle 12. 14 is a step floor, 15 is a reserve seedling stage, and 16 is a drawing marker. In addition, L1 is a change lever for switching missions, L2 is a speed change lever, L3 is a planting lift lever for moving the planting portion on and off and raising and lowering the planting portion, and L4 is a working state and a non-working state of the planting portion. L5 is a sub-sensitivity adjustment lever that adjusts the sensitivity of the planting part elevation control, L6 is a lowering lock lever that regulates the descent of the planting part, and D is a sensitivity adjustment dial that adjusts the sensitivity of the ground elevation control It is.

  The seedling planting section 4 is configured to be vertically planted, and is configured to be lifted up and down by a lifting hydraulic cylinder 26 via a hydraulic valve 27, and two upper and lower tiers that are inclined downward in common by two adjacent strips. 4 seedling box supply units 30, 30... Are provided in parallel on the left and right sides, and seedling box main transport units 31, 31. Has been. Each seedling box main transport unit 31 transports the seedling boxes supplied one by one in order from the upper and lower two-stage seedling box supply units 30 and 30 downward in the first half, gradually changing the transport direction in the middle, upward in the second half It is formed in a substantially U-shape in a side view to be conveyed. An empty box housing frame 38 that is connected to the terminal portion of the seedling box transport unit 31 and can accommodate a plurality of empty seedling boxes that have been taken out at a seedling extraction position P, which will be described later, in a stacked manner. Is provided. A guide body 40 for guiding the empty box from above is provided at a portion corresponding to the joint between the empty box guide rails 39a and 39b so that the seedling box can be smoothly moved around. The guide body 40 may be configured to be guided by a guide roller that is pivotally supported as shown in FIG. By the way, the empty seedling box after the seedling is taken out is provided so that the empty box guide rail 39 bends upward in a U shape, so that it is transported upward again and discharged from its upper end. The empty seedling box is accommodated in the empty box accommodation frame 38.

In addition, as the seedling box C used for this kind of transplanter, a flexible seedling tray in which seedlings are housed one by one in a seedling pot arranged in a large number of lengthwise and widthwise is used.
A seedling box supply device 29 for supplying the seedling box in the seedling box supply unit 30 to the main transport unit 31 is provided. An idling roller 20,... Is provided on the bottom surface of the seedling box supply units 30, 30 so that the placed seedling box slides backward due to its own weight. At the rear end of each seedling box supply unit 30, as a supply device 29 for supplying the seedling box to the transport path of the seedling box main transport unit 31, the right and left edges of the seedling box are gripped and the seedling box is placed on the main transport unit side. A pair of left and right supply rollers 21 and 22 that are fed forward, and a wide feed that is positioned in front of the supply roller and that has protrusions formed on the outer periphery engage with the gap between the pots from below to feed the seedling box A roller 23 is provided. The lower supply roller 22 and the feed roller 23 of the upper and lower seedling box supply unit are driven to rotate by motors M1 and M2, respectively.

  Also, corresponding to each seedling box main transport unit 31, a seedling box feeding device 32 that transports the seedling box along the seedling box transport path, and a seedling box being transported at the seedling extraction position P of the seedling box main transport unit 31. A seedling picking device 33 for picking out seedlings from the side of the pot one row at a time, a seedling transporting device 34 for transporting the picked seedlings with a trajectory that draws an arc on the lower front side, and a seedling extraction for extracting seedlings from the seedling transporting device A device 35, a seedling horizontal feeding device 36 for laterally feeding to the left and right sides of each half of the horizontal row extracted by the seedling removal device, and a seedling planting for taking seedlings supplied by the seedling lateral feeding device and planting them in the field Attaching device 37 is provided.

  A planting transmission frame 45 extends rearward from the lower left and right horizontal portions of the frame 42 integral with the drive case 41, and a seedling support frame 46 is fixed to the upper surface of the drive case 41. A seedling box supply unit (supply table) 30 is supported. The rolling support shaft 24 is rotatably supported by a bearing case 50 attached to a planting portion support bracket 48 fixed to the left and right central portions of the frame 42, and the entire planting portion is supported so as to be capable of rolling.

  Below each unit, four floats 52, 52, 53, 53 that slide while leveling the farm scene during planting work are provided, and are pivotally attached to the rear end of the support arm 56 so as to be rotatable up and down. ing. On each of the left and right sides of these floats, there are attached a grooving device 54,... For forming a fertilizer groove in the field near the planting position of each row, and a fertilizer guide 5c on the rear side thereof. A fertilizer hose 5d for transferring the fertilizer from the fertilizer feeding device 5b is connected to 5c.

  The seedling box feeding device 32 includes a pair of left and right feeding claws 60, 60 and locking claws 61, 61. The feeding claws 60, 60 reciprocate up and down along the seedling box conveyance path, and when they move downward, the seedlings Engage with the square hole for feeding the seedling box that is drilled at the left and right edges of the box at the same pitch as the pot, and when moving up, the engagement with the square hole is disengaged and it rides over to the next square hole. Operates as follows. The locking claws 61, 61 are interlocked with the movement of the feed claws 60, 60. When the feed claws 60, 60 move downward, they are disengaged from the square holes, and when the feed claws 60, 60 move upward, they engage with the square holes. Combined to operate to support the seedling box. By the operation of the feed claws 60, 60 and the locking claws 61, 61, the seedling boxes are intermittently fed along the seedling box transport path 31 by one pitch of the pot arrangement. The feeding operation of the seedling box feeding device 32 is performed when the seedling pushing pins 72,... Of the seedling picking device 33 described later are not inserted into the seedling box pot. Further, the feeding claws 60, 60 and the locking claws 61, 61 are transported on the upper side of the conveyance so that the locking claws 61, 61 protrude from the square hole of the preceding seedling box and project into the seedling box conveyance path. Blocking claws 63 and 63 are provided for temporarily receiving the succeeding seedling box sliding down the box transport path 31.

  By constructing the seedling box receiving surface side of the shielding claw with the cushion rubber 63a, the blocking claw 63 absorbs and reduces the impact at the time of receiving the seedling box. As shown in FIGS. If the shape of the cushion rubber 63a is made into a Z shape, the rotation of the rubber can be prevented simply by tightening and fixing the screw 63b. If the wear deteriorates over a long period of use, the opposite side can be used by reversing and turning. Less replacement is required. Further, if the cushion rubber 63a is formed in a regular square shape as shown in FIGS. 9 and 10, four cushion portions can be used, and the number of parts can be reduced. The operation mechanism of the seedling box feeding device 32 is provided with a seedling box feeding cam 65 on a first transmission shaft 64 that penetrates the upper portion of the drive case 41, and a roller 67 that is rotatably supported by the seedling box operating arm 66 is provided with a cam 65. The seedling box feed operation arm 66 is urged by a spring 68 so as to always abut against the outer peripheral surface. The rotation of the seedling box feed cam 65 causes the seedling box feed operating arm 66 to swing, and the swing of the seedling box feed operating arm 66 is transmitted to the seedling box feed driving arms 70 and 70 via the seedling box feed driving shaft 69. The feed claws 60, 60 are reciprocated up and down. When the cam 65 pushes the roller 67, the feed claws 60, 60 move downward to feed the seedling box.

  In the transport path of the seedling box supply units 30 and 30 and the seedling box main transport unit 31, seedling box detection sensors SW1 to SW7 for detecting the presence or absence of the seedling box are provided. SW1 (SW5) has a seedling box when the seedling box is placed on the upper (lower) seedling box supply unit 30. SW2 (SW6) has a seedling box when the upper (lower) supply rollers 21 and 22 are holding the seedling box. SW3 is provided at the junction of the upper conveyance path and the lower conveyance path, and the seedling box is present when the upper or lower supply rollers 21 and 22 are fed out just before the seedling box is opened.

  SW4 is provided between the position of SW3 and the position immediately before the seedling extraction position P, and the seedling box is present immediately after the upper or lower supply rollers 21 and 22 open the seedling box. Further, the seedling box detection sensor SW4 is configured by a contact type sensor, and the contact operation portion t of the sensor is disposed so as to be positioned from the transport upper side to the lower side of the operation position of the blocking claw 63, When this sensor detects that there is no seedling box, the next seedling box is fed out and supplied by the operation of the supply rollers 21 and 22 of the seedling box supply device 29 in conjunction with this. Immediately before the seedling box supplied in this way is received by the blocking claw, it will be subjected to contact resistance by the pressing spring force of the contact detection sensor itself, so that the seedling box is given a braking action and the falling speed is increased. It has come to ease.

  SW7 is a detection sensor that detects the position of the seedling box operating arm 66 that drives the seedling box feed driving arm 70, that is, a sensor that detects the operating positions of the feeding claw 60 and the locking claw 61, and the seedling box operating arm When 66 is moved up, it is pushed and turned off.

  The seedling take-out device 33 operates integrally with a pair of left and right slide shafts 73, 73 in which seedling pushing pins 72,... Arranged in the same number and pitch with respect to the pot in the lateral direction of the seedling box are supported slidably in the front-rear direction. It is provided to do. A rack 73a is formed on the slide shaft 73, and a first sector gear 74 is engaged with the rack. Further, another second sector gear 76 is attached to the gear shaft 75 to which the first sector gear 74 is attached, and the second sector gear 76 is rotatably supported by the support shaft 78. The arm 79 meshes with the gear portion 79a of the arm 79. A roller 80 is rotatably supported at the end of the seedling extraction operating arm 79 opposite to the gear portion 79 a, and the roller 80 is fitted in the guide groove 81 a of the seedling extraction cam 81. The slide shafts 73, 73 slide back and forth by the rotation of the seedling extraction cam 81, and when the slide shaft slides backward, the seedling push-out pins 72, ... are pots corresponding to one horizontal row of the seedling box at the seedling extraction position P. On the other hand, it is inserted into the pot through the cut at the bottom of the pot, and the seedling is pushed backward.

  The gear shaft 75 is provided with a safety clutch 75a that cuts off the transmission from the first sector gear 74 to the gear shaft 75 when a predetermined load or more is applied to the transmission system after the gear shaft 75.

  Further, the gear shaft 75 is provided with a mechanism 75b for adjusting the front / rear slide stroke of the seedling push pins 72,... And a mechanism 75c for adjusting the positions of the left and right slide shafts 73, 73. The seedling box feed cam 66 and the seedling extraction cam 81 are integrally formed in a common cylinder 64a that is rotatably fitted to the first transmission shaft 64, and a fixed position stop clutch that externally operates the cylinder and the first transmission shaft 64. It is connected by 64b so that transmission can be turned on and off.

  The seedling transporting device 34 includes a seedling holder 83 that holds a bed soil portion of the seedling pushed out from the seedling box by the seedling extruding pins 72. The seedling holder 83 has both left and right ends fixed to support members 86 and 86 connected to the upper and lower two swing links 84 and 85, and reciprocates along an arc locus by the swing of the swing link. It has become.

  The seedling removal device 35 includes a comb-shaped seedling hitting 100 that can pass back and forth through the seedling holding portion of the seedling holder 83. A seedling hitting arm 102 is attached to a rotating seedling attachment shaft 101 in a lateral direction provided rotatably, and a seedling hitting 100 is integrally attached to a turning arm 103 rotatably attached to the seedling hitting arm 102. . The rotating arm 103 can be rotated through a bolt 102a within the range of the long hole 103a. A roller 104 attached to the hitting arm 102 is urged by a spring 107 so as to come into contact with the cam surface of the seedling hitting cam 106 attached to the cam shaft 105. When the seedling tapping cam 106 is rotated, the seedling tapping 100 is quickly rotated downward by the tension of the spring 107 when the roller 104 is fitted into the concave portion of the cam, so that it immediately returns to the original position.

  When the seedling holder 83 has moved to the lower end of the movement trajectory, the seedling tapping 100 receives the seedling held by each seedling holding portion of the seedling holder 83 and passes only the seedling holder 83 to extract the seedling. It rotates downward and knocks the extracted seedling onto the seedling feeding belts 113, 113 of the seedling lateral feeding device 36 described later.

  The seedling lateral feed device 36 includes a pair of left and right seedling feed belts 113, 113 wound around a drive roller 111 and a driven roller 112 of a seedling lateral feed drive shaft 110 installed on a main frame. It is provided symmetrically so as to move to. A deflection preventing plate 114 for preventing the belt from being curled by the weight of the falling seedling is provided below the lateral feed portion. The seedlings N,... For one horizontal row removed by the seedling removal device 35 fall in alignment on the seedling feeding belts 113, 113, and the seedling feeding belts 113, 113 receiving the seedling feeding belts 113, 113 receive the seedlings in the left and right halves. Are transported to the left and right sides. The seedling N conveyed by the seedling feeding belt 113 is dropped between the pair of planting guides 115 and 115.

  Above the seedling feeding belts 113, 113, washing nozzles 116,... For washing mud adhering to the belts are provided. The water flow pipe 117 in which the washing nozzles 116,... Are integrally formed is supported by fixing mounting plates 118 integral at both ends to the planting part frame with bolts 119.

  In the seedling planting device 37, a pair of seedling planting tools 122, 122 are attached to a rotating case 121 that rotates integrally with a planting drive shaft 120 provided at the rear end of the planting transmission frame 45. The tools 122 and 122 move in a closed loop tip locus. Each seedling planting tool 122 alternately takes seedlings dropped between the planting guides 115 and 115, and moves them between the planting guides 115 and 115 to plant them in the field.

  The transmission mechanism of the planting portion will be described with reference to FIGS. 14 and 15. The input shaft 130 to which power is transmitted from the machine side is interlocked with the second transmission shaft 133 via bevel gears 131 and 132. Then, the power is transmitted from the second transmission shaft 133 to the seedling lateral feed drive shaft 110 via the eight sets of bevel gears 135 and 136. A pair of adjacent seedling transverse feed drive shafts 110, 110 rotate in opposite directions. Further, in each planting transmission frame 45, a sprocket 137a attached to the second transmission shaft 133 and a transmission chain 137 spanning the sprocket 137b attached to the planting drive shaft 120 are provided. The power is transmitted from the two transmission shafts 133 to the planting drive shaft 120.

  Furthermore, the second transmission shaft 133 is interlocked with the lower ends of the two left and right upper and lower transmission shafts 142 via bevel gears 140 and 141 at the outer end thereof. The upper end of the left vertical transmission shaft 142 is linked to the first transmission shaft 64 for the first unit and the second unit via the bevel gears 143 and 144, and the middle portion thereof is connected via the bevel gears 147 and 148. It is linked to the seedling hitting cam shaft 105 for the first unit and the second unit. Similarly, the right vertical transmission shaft 142 is connected to the first transmission shaft 64 for the third unit and the fourth unit and the seeding cam shaft 105 in an interlocking manner.

  In the configuration example shown in FIG. 20, the seedling box detection sensors SW1 to SW7 are connected to a controller as shown in FIG. And based on the information from each sensor, a controller outputs to motor M1, M2, a seedling reduction lamp, and a reduction buzzer. FIG. 22 is a flowchart of control in the controller, which reads inputs from the detection sensors SW1 to SW7, compares them with the operation table shown in FIG. 23, and outputs them according to the pattern of the corresponding input condition. No output is performed when none of the input conditions is met.

  In the operation table shown in FIG. 23, for SW1 to SW6, “0” indicates that there is no seedling box, “1” indicates that there is a seedling box, and blank portions indicate that there is no seedling box or a seedling box. For SW7, “1” is set to OFF, and the blank portion is set to ON or OFF. “Priority” is a flag for program processing, and the switching condition is NO. 8 and NO. 13 The blank portion of “priority” is “1” or “2”, and “priority” at power-on is “1”.

  Before planting, one seedling box is loaded on the upper conveyance path and two seedling boxes are placed on the upper and lower seedling box supply sections. In this work start state, SW1 to SW7 are “1” and the priority is “1”, which does not correspond to any input condition, so the motors M1 and M2 are stopped. When the planting operation is started from the above state, the feeding claw 60 and the locking claw 61 are operated to intermittently feed the seedling box by one pitch. Synchronously with this, each part of the planting unit 4 operates, and at the seedling extraction position P, seedlings are taken out from the pots in the horizontal row of the seedling box and are planted in the field. When the work progresses and the last tail of the seedling box (first seedling box) being taken out comes to a position just before the seedling picking position P, and SW3 and SW4 become “0”, NO. Therefore, the motor M1 is activated. Thereby, the seedling box (second seedling box) next to the upper seedling box supply unit is fed to the upper transporting unit. When the second seedling box is drawn out just before it is opened, the top part of the second seedling box reaches the junction of the upper and lower conveying paths, and SW3 becomes “1”. This state is NO. For SW1 to SW6. This corresponds to the input conditions of 6-1. Therefore, when the feeding claw 60 is fed, that is, when the locking claw 61 does not support the seedling box, the motor M1 is temporarily stopped, and then the locking claw 61 supports the seedling box and the seedling box blocking claw 63 is moved. When it enters the seedling box conveyance path and receives the lower end of the seedling box (SW7 is “1”), the motor M1 is restarted to open the second seedling box. Then, the second seedling box is once received by the blocking claw 63.

  When the second seedling box is opened and SW2 becomes “0”, NO. The input condition is switched to 4, the operation of the motor M1 is continued, and the leading portion of the next third seedling box is gripped by the supply roller. Then, SW2 becomes “1” and does not correspond to any input condition, so the motor M1 stops. When the operation proceeds in this way and the rear tail of the third seedling box passes the position immediately before the seedling extraction position P, and SW3 and SW4 become “0”, NO. 13 input conditions, and “priority” is switched from “1” to “2”. Then, this time, the motor M2 operates to feed out the seedling box (fourth seedling box) of the lower seedling box supply unit.

  Hereinafter, similarly to the case where the second seedling box and the third seedling box of the upper seedling box supply unit are supplied to the upper transporting unit, the motor M2 is operated in a timely manner, and the fourth seedling box and the fifth seedling box of the lower seedling box supply unit are operated. The seedling boxes are sequentially supplied to the lower conveyance unit, and the seedlings are taken out from the respective seedling boxes. When the last fifth seedling box is released from the lower supply roller, NO. 1 is input and output to the seedling reduction lamp. When the seedling reduction lamp lights up, the seedlings are supplied to the upper and lower seedling supply parts. Further, even if the seedling reduction lamp is turned on, the seedling is not replenished, and when the last tail of the fifth seedling box passes the position immediately before the seedling extraction position P and SW3 and SW4 become “0”, NO. Since the input condition No. 3 is continued for 4 seconds or more, it is output to the seedling reduction buzzer 4 seconds after the condition is satisfied.

  In the automatic seed box feeding device, the rotational speeds of the motors M1 and M2 for feeding the seedling box in the upper transport path and the lower transport path can be switched. The rotational speed of the upper motor M1 is slower than the rotational speed of the lower motor M2. That is, as shown in FIG. 22, the rotation speed is slowed by the pulse output of the motor M1 with respect to the continuous output of the motor M2. This is because the upper conveyance path has a large inclination angle at which the seedling box falls with respect to the lower conveyance path, so that both ends of the seedling box are easily damaged when hitting the blocking claw. When feeding the upper stage at the time of automatic supply, the rotational speed of the motor M1 is slowed so that the speed when hitting the blocking claw is the same in both the upper and lower stages, and damage to both ends of the seedling box can be prevented.

  As shown in FIG. 23, the rotational speed can be slowed by setting the motor M1 to a minute pulse output with respect to the pulse output of the motor M2. In addition, by making the rotational speed of the motor and the free fall speed of the seedling box between the detection sensors SW1 and SW2 substantially the same, the impact force when the seedling box collides with the roller of the motor unit is reduced, and the seedling box is damaged. Can be prevented.

  As shown in FIG. 20, a limit switch LS is provided in the upper part of the empty box 38, and when a box exceeding a specified level enters, the switch is pressed to notify the driver with a buzzer BZ. When a box exceeding the specified number is entered, the driver is informed so that clogging of the box feed can be prevented and continuous stock removal can be prevented beforehand.

  24 and 25 show a basket frame 150 for storing a seedling box. In the cage frame 150 that is framed in a box shape by outer lateral frames 151a, 151a..., Vertical frames 151b, 151b. By providing several partitioning rods Q1, Q2, Q3 to Q9 with enough space to store the seedling box, the seedling box can be stored in either the vertical or horizontal direction from the open end side of this cage frame. It is composed. Accordingly, several seedling boxes C can be accommodated in the basket frame in either the vertical (b) state or the horizontal (b) state, and work efficiency can be improved.

Side view of seedling transplanter Same as above Side view of the main part of the seedling planting part Rear view of seedling box transport section Side view of part of seedling planting part Side view of part of empty box guide rail Rear view of blocking claw Side view Rear view of blocking claw Side view Rear view of seedling tapping and seedling feeding belt Side view of seedling removal device Rear view of cleaning device Power planting mechanism diagram Partial cross-sectional view of planting transmission mechanism Cross section of the drive case S2-S2 sectional view of FIG. S1-S1 sectional drawing of FIG. 16 Side view of the principal part of a seedling planting part Cross section of seedling transport drive case Side view of seedling box supply section and seedling box transport section Control block diagram of seedling box supply Flow chart for seedling box supply Operation table of each member Front view of basket box for storing seedling box Side view

Explanation of symbols

29 Seedling box supply device 30 Seedling box supply unit 31 Seedling box transport unit P Seedling extraction position 63 Blocking claw SW4 Seedling box detection sensor t Sensor contact action part

Claims (1)

  In a seedling transplanter that takes out seedlings from a predetermined seedling extraction position (P) of the seedling box transport paths (30), (31) and transplants them into a field, the seedling box transport path includes seedling box supply sections (30), (30 ) And a main transport unit (31) having a seedling extraction position (P), and the seedling boxes in the seedling box supply units (30), (30) are transferred to the main transport unit (31) by the seedling box supply device (29). When the contact type seedling box detection sensor (SW4) provided in the main transport unit detects that there is no seedling box, the supply device (29) is operated based on the detection result. An interruption claw (63) is provided on the conveyance lower side of the seedling box supply device from the seedling extraction position to the conveyance upper side to temporarily receive the transfer of the seedling box, and the seedling box detection sensor is provided from the conveyance upper side to the lower side of the action position of the interruption claw. A seedling transplanting machine in which the contact action part (t) of (SW4) is positioned.

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