JP2011087529A - Riding seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a riding seedling transplanter capable of safely getting on/off the step floor of the travel vehicle body. <P>SOLUTION: The riding seedling transplanter is configured such that a step floor (14) is provided on the periphery of a steering seat (13) on the travel vehicle body (2), and preliminary seedling stands (15) are provided on the right and left sides of the step floor (14). In the riding seedling transplanter, the preliminary seedling stands (15) are provided with grips (44R and 44L) for getting on/off the step floor (14), respectively, wherein the grips (44R and 44L) on each of the right and left preliminary seedling stands (15) are provided on the front inner side and the rear outer side of the right and left preliminary seedling stands (15), respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a technique for enabling safe boarding / exiting in a riding-type seedling transplanting machine for planting seedlings in a field.

  The riding seedling transplanter, as described in JP-A-7-13003, connects the seedling transplanting device to the rear part of the traveling vehicle on which the operator is boarded, and provides spare seedling mounting platforms on the left and right sides of the traveling vehicle, A step floor is provided at the foot of the cockpit. An operator gets on and off the step floor from the front side or the left and right sides of the aircraft, and the seedlings on the preliminary seedling stage are transferred to the seedling transplanting device on the step floor or moved on the step floor to move to the cockpit. Like to sit on.

JP 7-13003 A

  When the operator gets on the step floor, he holds the steering handle or the fertilizer tank at the rear of the vehicle body, but the steering handle rotates unexpectedly, and the fertilizer tank slides hard to hold and is safe. Can't get on.

  Accordingly, an object of the present invention is to provide a riding seedling transplanter that can safely get on and off the step floor of the traveling vehicle body.

The problems of the present invention are solved by the following technical means.
The invention according to claim 1 is a riding type seedling transplanting machine in which a step floor 14 is provided around a control seat 13 on a traveling vehicle body 2, and spare seedling mounting bases 15 are provided on left and right side portions on the step floor 14. The riding seedling transplanting machine is characterized in that handles 44 </ b> R and 44 </ b> L for getting on and off are provided on the preliminary seedling stage 15.

With this configuration, the operator can get on and off the traveling vehicle body 2 by grasping the handles 44R and 44L.
According to the second aspect of the present invention, the handles 44R and 44L provided on the left and right spare seedling stage 15 are provided on the front inner side of the preliminary seedling stage 15 and on the rear outer side of the preliminary seedling stage 15. A riding seedling transplanter will be used.

With this configuration, the handles 44R and 44L always come to a usable position when getting on and off even if the spare seedling stage 15 is rotated and the front and rear are reversed.
The invention according to claim 3 is a configuration in which the spray water tank 17 is provided at the rear portion of the preliminary seedling stage 15 with a boarding / alighting interval, and in addition to the handles 44R and 44L of the preliminary seedling stage 15, the spray water tank 17 is provided. The riding type seedling transplanter according to claim 1 or 2, wherein an auxiliary handle 47 is additionally provided.

  With this configuration, the operator can get on the step floor 14 from the side of the traveling vehicle body 2 with the handles 44R and 44L and the auxiliary handle 47.

In the first aspect of the invention, the operator can safely hold the handles 44R and 44L and get on the step floor 14 to be safe.
In the invention of claim 2, even if the preliminary seedling stage 15 is rotated to change the front-rear direction, the handle 44R, It is safe because 44L is positioned so that the handles 44R and 44L can be securely gripped and climbed onto the step floor 14.

  In the invention of claim 3, when an operator gets on and off from the left and right side portions on the step floor 14, the operator can get on the step floor 14 more safely with the handles 44R and 44L and the auxiliary handle 47. It is safe.

It is a side view of a seedling transplanter. It is a top view same as the above. It is a side view of the principal part of a seedling planting part. It is a side view of a seedling box supply part and a seedling box conveyance part. It is a control block diagram of seedling box supply. It is a flowchart for seedling box supply. It is an operation | movement table | surface of each member. It is a warning flowchart of seedling box feed failure. It is an alarm flowchart same as the above. It is the (a) side view and (b) front view of a seedling box detection sensor. It is a rear view of a seedling hitting and seedling feeding belt. It is a side view of a seedling removal apparatus. It is a rear view of a washing | cleaning apparatus. It is a transmission mechanism figure of a planting part. It is a back sectional view of a part of planting transmission mechanism part. It is a back sectional view of a drive case. It is S1-S1 sectional drawing of FIG. It is S2-S2 sectional drawing of FIG. It is a sectional side view of a seedling conveyance drive case. It is a control block diagram. It is a flowchart. It is a side view of a float. It is a control block diagram. It is a relationship chart of a float angle of attack and a rolling motor speed. It is a front part expansion perspective view of a center float and a side float. 3 is an enlarged side view of a seedling feeding belt 113. FIG. It is a perspective view of a coastal rice transplanter. It is a front view of a walking type rice transplanter. It is a front side view of a walking type rice transplanter. It is a front enlarged side view of a walking type rice transplanter.

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

  The fertilizer feeding device 5b and a fertilizer application guide 5c, which will be described later, are connected by a fertilizer hose 5d, and the compressed air generated by the fertilizer blower 10 provided on the left side of the traveling vehicle body 2 is sent to each fertilizer hose 5d by the blower hose 11 to convey fertilizer. However, the air blowing hose 11 on the weak wind side is made shorter than the air blowing hose 11 on the strong side so that the amount of air reaching the fertilizer application guide 5c is made uniform and the fertilizer is evenly supplied to the planting strips. I have to.

  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 and the second belt transmission device. 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 is transmitted to the seedling planting section 4 through the transmission shaft, the intermediate gear case, and the transmission shaft. .

  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. Reference numeral 14 denotes a step floor, 15 denotes a spare seedling stage, 16 denotes a drawing marker, and 17 denotes a spray water tank.

  The spray water tank 17 is divided and provided as a main spray water tank 17a and a sub spray water tank 17b on the left and right side portions of the traveling vehicle body 2, and the mounting height thereof is a height at which water is evenly reduced. Yes.

  On the upper side of the main spray water tank 17a and the sub spray water tank 17b, auxiliary handles 47R and 47L extending from the upper ends of the columns 49 standing from the traveling vehicle body 2 are provided. The auxiliary handles 4747R and 47L can be grasped by an operator who rides on the step floor 14 from the side step 51, and when supplying water to the main spray water tank 17a and the sub spray water tank 17b, a supply tank is temporarily placed. You can also.

  The fertilizer blower 10 is foldable to improve workability on the step floor 14, but when the fertilizer blower 10 is fixed at a predetermined position, the sub spray water tank 17b is also fixed together. Yes.

  The water in the spray water tank 17 is washed by spraying the pot seedling holder with the spray nozzle, but the pot seedling holder has a lower peripheral part far from the spray nozzle and water is uniformly sprayed on the entire surface of the pot seedling holder. I try to do it.

  Further, around the steering handle 12, there are a change lever and a shift lever for shifting the transmission, a transmission on / off of the planting part, a planting lift lever for raising and lowering the planting part 4, and a working state of the planting part 4 A finger up lever that switches between working states, a secondary sensitivity adjustment lever that adjusts the sensitivity of the planting part elevation control, a lowering lock lever that regulates the descending of the planting part 4, a sensitivity adjustment dial that adjusts the sensitivity of the ground elevation control, etc. Provided.

  A front monitor 57 is provided on the front panel 69 on the front side of the steering handle 12, and an image taken by the camera 59 provided at the front end of the stay 58 standing from the machine frame at the center of the left and right of the seedling box supply unit 30 is projected. The operation state of the seedling planting unit 4 is monitored by displaying on the front monitor 57. The video displayed on the front monitor 57 is reversed left and right so that the operator can easily understand the video viewed from the rear.

  The seedling planting part 4 is an eight-row planting structure, and is configured to be moved up and down by a lifting hydraulic cylinder 26 via a lifting hydraulic (electromagnetic) valve. Four sets of upper and lower two-stage seedling box supply units 30, 30... Are provided in parallel on the left and right, and seedling box main transport units 31, 31... Are connected to the rear ends of these sets of seedling box supply units. Thus, a seedling box conveyance path is configured.

  Each seedling box main transport unit 31 transports seedling boxes C supplied one by one in order from the upper and lower seedling box supply units 30 and 30 downward in the first half, gradually changing the transport direction in the middle, It is formed in a substantially U-shape in a side view that conveys upward.

  An empty box housing frame 38 that can be connected to the terminal portion of the seedling box transport unit 31 and accommodates a plurality of empty seedling boxes C after the seedlings are taken out at the seedling picking position P described later. Is provided.

A guide body 40 for guiding the empty box from the upper side is provided at a portion corresponding to the joint between the empty box guide rails 39a and 39b, so that the seedling box C can be smoothly moved around. (See Figure 3)
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 C is accommodated in the empty box accommodation frame 38.

In addition, as the seedling box C used in this type of transplanter, a flexible seedling tray in which seedlings are housed one by one in a seedling pot C1 arranged in a large number of lengthwise and widthwise is used. (See Figure 10)
As shown in FIG. 4, a seedling box supply device 29 that supplies the seedling box in the seedling box supply unit 30 to the main transport unit 31 is provided. An idle roller 20,... Is provided on the bottom surfaces of the seedling box supply units 30 and 30 so that the seedling box placed on the seedling box slides backward under 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 for each row from the pot, 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 for extracting seedlings from the seedling transporting device 34 A cutting device 35, a seedling horizontal feeding device 36 that horizontally feeds the left and right sides of each half of the row extracted by the seedling removing device 35, and a seedling supplied by the seedling horizontal feeding device 36 to the field. A seedling planting device 37 for planting is provided. (See Figure 3)
In addition, the seedling length sensor 62 is provided at the end of the seedling box main transport unit 31, and the position of the seedling falling on the seedling horizontal feeding device 36 is changed by sliding the seedling removal device 35 back and forth according to the length of the seedling. By doing so, the seedling planting device 37 holds the appropriate position of seedlings that are shorter or longer than the standard so that the seedling planting state in the field is improved. This prevents the seedling from floating and falling or becoming an additional plant.

Moreover, the vibration sensor 69 is provided in the seedling lateral feed device 36, and when the crunch is detected, the traveling speed of the traveling vehicle body 2 is reduced, thereby preventing the planting position from being disturbed.
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.

  The entire planting unit drives the rolling motor 25 in the forward / reverse direction by an operation signal from the control device so that the detected value is maintained at the set value based on the detected value of the horizontal sensor 43 provided on the drive case 41. Thus, the planting part 4 is controlled to roll right and left around the support shaft 24 via the rolling spring 28. In addition, even if it replaces a planting part, the malfunction of an operation | movement can be eliminated by installing the said horizontal sensor 43 behind the removal | desorption part of a planting part.

Below each unit, there are provided two center floats 52 and side floats 53 that slide while leveling the farm scene during planting work, and are pivotally attached to the rear end of the support arm 56 so as to be pivotable up and down. ing. On both the left and right sides of the center float 52 and the side float 53, there are a center grooving device 54 and a side grooving device 55 for forming a fertilizing groove in a field scene in the vicinity of the seedling planting position of each strip, and on the rear side thereof. A fertilizer application guide 5c is attached, and a fertilizer application hose 5d for transferring fertilizer from the fertilizer feeding device 5b is connected to the fertilizer application guide 5c. (See Figure 25)
Further, the tip front tilt angle α of the center groover 54 is made smaller than the tip front tilt angle β of the side groover 55 to reduce the resistance to cut into the field scene, and the center float 52 can easily float on the field scene. ing.

  The two center floats 52 and 52 detect unevenness of the farm scene, and an angle (attack angle) α with respect to the farm scene of both floats is detected by the float attack angle sensor 150. That is, as shown in FIG. 22, the detection arm 151 of the sensor 150 is connected to the balance arm 153 via the connecting rod 152. The balance arm 153 is connected to the float 52 via a rod 154. As a result, the angle of attack of the float is detected. At the time of planting work, if the planting unit 4 is lowered to a work position where the float contacts the ground, the planting unit 4 is brought to a certain height from the field scene. Ascending / descending control is performed based on the detection value of the float angle sensor 150 so as to be maintained.

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 formed in the left and right edge portions of the box C at the same pitch as the pot, and when moving up, the engagement with the square hole is disengaged until the next square hole Operates to get over. (See Figure 4)
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. It operates to support the seedling box C together.

  By the operation of the feed claws 60 and 60 and the locking claws 61 and 61, the seedling box C is 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 pot C1 of the seedling box C.

  Further, on the upper side of the feeding claws 60, 60 and the locking claws 61, 61, the locking claws 61, 61 protrude into the seedling box conveyance path in conjunction with the withdrawal from the square hole of the preceding seedling box C, Blocking claws 63 and 63 are provided for temporarily receiving the succeeding seedling box C sliding down the seedling box transport path 31.

  As shown in FIG. 17, 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 part of the drive case 41, and is rotatably supported by a seedling box operating arm 66. The seedling box feed operation arm 66 is urged by a spring 68 so that the roller 67 is always in contact with the outer peripheral surface of the cam 65.

  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 C.

  When the feed claw 60 is moved down to the lowest point, the seedling box feed drive arm 70 is provided so as to push the sensing switch 71. When the sensing switch 71 is not pushed, an interlocking sound is generated. Can be kept. According to this configuration, when the seedling box feeding failure occurs due to clogging or the like in the seedling box supply unit, the drive arm 70 of the feeding claw 60 does not press the detection switch 71, so that the operator is notified by an alarm buzzer. It can prevent planting defects such as continuous stockouts.

  In the configuration example shown in FIG. 4, the seedling box detection sensors SW7 to SW7 detect the seedling box detection sensors SW1 to SW7 that detect the presence or absence of seedling boxes in the transport paths of the seedling box supply units 30 and 30 and the seedling box main transport unit 31. Is provided. The upper seedling box detection sensor SW1 has a seedling box when the seedling box C is placed in the upper seedling box supply unit 30, and the lower seedling box detection sensor SW5 has a seedling box in the lower seedling box supply unit 30. When is placed, there is a seedling box.

  The upper seedling box detection sensor SW2 has a seedling box when the upper supply rollers 21 and 22 hold the seedling box, and the lower seedling box detection sensor SW6 has the lower supply rollers 21 and 22 provided with the seedling box. There is a seedling box when holding.

  The seedling box detection sensor SW3 is provided at a junction between 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 extended just before the seedling box is opened.

  The seedling box detection sensor SW4 is provided between the position of the seedling box detection sensor SW3 and the position immediately before the seedling extraction position P, and immediately after the upper or lower supply rollers 21 and 22 open the seedling box. Yes.

  Further, the seedling box detection sensor SW4 is configured by a contact type sensor, and is arranged so that the contact action portion t of the seedling box detection sensor SW4 is located from the transport upper side to the lower side of the action position of the blocking claw 63. When the seedling box detection sensor SW4 detects that there is no seedling box, the next seedling box C 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. It has become.

  Immediately before the seedling box C supplied in this way is received by the blocking claw 63, contact resistance is received by the pressing spring force of the contact detection sensor itself, and a braking action is applied to the seedling box C. The fall speed is relaxed.

  The seedling box detection sensor 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. The seedling box actuating arm 66 is pushed and turned off when it moves up.

  The seven seedling box detection sensors SW1 to SW7 are connected to the 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. 6 is a flowchart of control in the controller, which reads input from the seedling box detection sensor SW1 to the seedling box detection sensor SW7, compares it with the operation table shown in FIG. 7, and according to the pattern of the corresponding input condition. Output. When none of the input conditions is met, no output is performed.

  In the operation table shown in FIG. 7, regarding the seedling box detection sensor SW1 to the seedling box detection sensor SW6, “0” indicates that there is no seedling box, “1” indicates that there is a seedling box, and the blank portion indicates that there is no seedling box or there is a seedling box. . For the seedling box detection sensor 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 C is loaded on the upper conveyance path, and two seedling boxes C are placed on the upper and lower seedling box supply sections. In this work start state, the seedling box detection sensor SW1 to the seedling box detection sensor SW7 are “1” and the priority is “1”, and the motors M1 and M2 are stopped because they do not correspond to any input condition. Yes. 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. In synchronism 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 operation progresses and the last tail of the seedling box (first seedling box) being extracted comes to a position immediately before the seedling extraction position P, and the seedling box detection sensors 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 leading portion of the second seedling box reaches the junction of the upper and lower conveyance paths, and the seedling box detection sensor SW3 becomes “1”. This state is NO. For the seedling box detection sensor SW1 to the seedling box detection sensor SW6. This corresponds to the input conditions of 6-1.

  Therefore, when the feed claw 60 is fed, that is, when the latching claw 61 does not support the seedling box C, the motor M1 is temporarily stopped, and then the seedling box blocking claw 63 with the latching claw 61 supporting the seedling box. Rushes into the seedling box transport path and receives the lower end of the seedling box C (when the seedling box detection sensor SW7 is “1”), the motor M1 is restarted and the second seedling Open the box. Then, the second seedling box C is received once by the blocking claw 63.

  When the second seedling box C is opened and the seedling box detection sensor 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, the seedling box detection sensor SW2 becomes “1” and does not correspond to any input condition, so the motor M1 stops. When the operation proceeds in this way, the rear tail of the third seedling box passes the position immediately before the seedling extraction position P, and the seedling box detection sensor SW3 and the seedling box detection sensor SW4 become “0”. 13 input conditions, and “priority” is switched from “1” to “2”. Then, this time, the motor M2 operates to feed out the seedling box C (fourth seedling box C) of the lower stage seedling box supply unit.

  Hereinafter, similarly to the case where the second seedling box C and the third seedling box C of the upper seedling box supply part are supplied to the upper transporting part, the motor M2 is operated in a timely manner, and the fourth seedling box C of the lower seedling box supply part. The fifth seedling box C is sequentially supplied to the lower transport unit, and the seedlings are taken out from the respective seedling boxes. When the last fifth seedling box C 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. In addition, even if the seedling reduction lamp is lit, seedlings are not replenished, the last tail of the fifth seedling box passes the position immediately before the seedling extraction position P, and the seedling box detection sensor SW3 and the seedling box detection sensor SW4 are set to “0”. Then 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.

  Through the above process, the seedling box of the seedling box supply unit is automatically supplied to a predetermined position of the main transport unit. During this operation, the last tail of the seedling box being extracted is immediately before the seedling extraction position P. When the seedling box detection sensor SW3 and the seedling box detection sensor SW4 become “0” after reaching the position, NO. 5 (or NO · 10, NO · 13), and the operation of the motor M1 or M2 causes the next seedling box C in the seedling box supply section to be fed out to a predetermined position of the main transport section. At this time, as shown in the flowchart of FIG. 8, if the seedling box is not sent to the predetermined position even if the motor M1 or M2 is operated for a predetermined time (about 5 seconds) or more, the seedling box detection sensor SW3 is turned off and output to the seedling box feed failure alarm device BZ to notify the operator. As a result, the operator can determine that the seedling box feed is defective and deal with it promptly.

  In the automatic feeder for the seedling box C, the rotational speeds of the motors M1 and M2 for feeding the seedling box C 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. 6, the rotation speed is slowed down 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 C are easily damaged when hitting the blocking claw 63. When sending 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 63 becomes the same in both the upper and lower stages, and damage to both ends of the seedling box C can be prevented.

  In addition, as shown in FIG. 7, this rotational speed can be slowed by making the motor M1 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 seedling box free fall speed between the seedling box detection sensors SW1 and SW2 substantially the same, the impact force when the seedling box C collides with the roller of the motor unit is reduced, and the seedling The box can be prevented from being damaged.

  Note that the seedling box detection sensor SW shown in FIG. 10 is configured such that the contact operation portion t of this sensor acts on the pot C1 portion of the seedling box C to sense, and the seedling box detection sensor SW1 to the seedling box detection sensor SW6 are configured. It can be used as a detection sensor. Since each of these detection sensors is sensed on the side surface of the pot portion, it is not affected by mud, and the pot portion can be reliably sensed because of a round shape formed regularly.

  As shown in FIG. 18, the seedling extraction device 33 is a pair of left and right slides in which seedling push pins 72,... Arranged in the same number and pitch with respect to the pot in the lateral direction of the seedling box are slidably supported in the front-rear direction. The shafts 73 and 73 are provided so as to operate integrally. 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. When the seedling extraction cam 81 rotates, the slide shafts 73, 73 slide back and forth, and when the slide shaft slides backward, the seedling push-out pins 72,... The pot 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.

  A sensor switch SW8 for detecting the presence or absence of a seedling box is provided in front of the seedling extraction position P by the seedling pushing pins 72,... (See FIG. 4). Even if the seedling box supply unit has a seedling box and the seedling box detection sensor SW1 or the seedling box detection sensor SW5 is in the ON state, if the sensor switch SW8 is OFF, as shown in FIG. As a failure, the main clutch motor may be driven so that the travel clutch is disengaged (alarm device may be activated at the same time) to stop the travel of the aircraft. Therefore, this traveling stop allows the operator to detect that the seedling box feed is defective, and it is possible to prevent continuous stock removal by taking prompt measures.

  Further, a load sensor 126 is provided between the seedling push pin 72 and the slide shaft 73 (see FIG. 18), and when the load value based on the detection result of the load sensor is light, the spraying time is set to be longer than usual. Yes. If the extrusion load of the extrusion pin is light, the pot is likely to collapse, so that the spraying time can be lengthened and mud adhesion to the seedling holder, the seedling feed belt, etc. can be reduced to stabilize planting.

  20 and 21, a push pin load sensor 126 and a planting lift lever sensor 127 are connected to the input side of the control unit 128, and an atomizing electromagnetic valve 129 is connected to the output side of the control unit. When the planting elevating lever sensor 127 detects that it is in the “planting” work state and a predetermined time has elapsed since the previous spraying, when the push pin load sensor value is “large” (heavy), the spraying electromagnetic valve 129 A signal that opens for a normal time is output. Conversely, when the value of the push pin load sensor 126 is “small” (light), a signal for opening the atomizing electromagnetic valve 129 for a long time is output.

  Note that when the load sensor detects an abnormally heavy value, an alarm buzzer can be sounded to notify the operator. If the seedling pushing pin pushes out the position where the center of the seedling push pin is misaligned from the seedling box pot portion, the load sensor gives a very heavy detection value. By notifying this to the operator, it is possible to prevent poor planting.

  The seedling transporting device 34 includes a seedling holder 83 that holds a seed bed 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, 86 connected to two upper and lower swing links 84, 85, and reciprocates along an arc locus by the swing of the swing link. It has become.

  As shown in FIGS. 16 and 19, the drive mechanism of the seedling transport device 34 rotates the first transmission shaft 64 to the input shaft 92 of the seedling transport transmission case 91 via the arm 88, the telescopic rod 89 and the arm 90. The repetitive rotational motion is transmitted, and the repetitive rotational motion is transmitted from the input shaft 92 to the seedling transport drive shaft 95 attached to the swing link 85 via the pair of transmission gears 93 and 94. It is configured.

  In addition, as shown in FIG. 3, the seedling holder 83 is arranged so that when the seedling holder is planted, the stop position of the seedling holder when the planting clutch or the heel clutch is disengaged is from the washing nozzle 116 in the direction to take the seedling. It is configured to stop in the fountain zone (a) where fountains are to be struck. According to this, even when the seedling is not planted, the seedling holder can be efficiently cleaned, mud adhesion is reduced, and the catching of the seedling is stabilized.

  As shown in FIGS. 11 and 12, 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 in 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 left and right halves one by one. Each seedling is 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 off the 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 addition, as shown in FIG. 26, the seedling feed belts 113 and 113 are provided with a brush 19 for scraping off mud adhering to the conveying surface. This brush 19 is provided over the front width of the belt width, The interval is narrowed at the base of the seedling and the leaf side is widened so that the transport of the seedling is not hindered.

  As shown in FIG. 11, when mud accumulates around the seedling feeding belt 113, a sound wave detecting device 124 is provided for detecting the mud pool. When this sound wave detection device detects a mud pool, it notifies the operator with an alarm buzzer, etc., so that the operator can quickly remove the mud pool, or it can be washed off with a washing nozzle by operating the spray device, It is possible to reduce seedling planting defects.

  The seedling planting device 37 has a pair of seedling planting tools 122 and 122 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 implants 122, 122 move in a closed loop tip locus. Each seedling planting tool 122 alternately takes one seedling dropped between the planting guides 115, 115, and moves it between the planting guides 115, 115 to plant it 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.

  The sensitivity adjustment dial 18 is configured to be able to simultaneously adjust the lifting control sensitivity and the rolling control sensitivity of the planting part. The operation speed of rolling control is linked with the range of the sensitivity adjustment dial, and the rolling operation speed is slow and slow when the field soil is soft, and the rolling speed is increased when the field soil is hard. So, stable seedlings can be planted.

  In the control block diagram shown in FIG. 23, on the input side of the control unit 28, a sensitivity adjustment dial 18 that adjusts the elevation control sensitivity and rolling control sensitivity of the planting unit 4, and a horizontal sensor that detects the horizontal inclination of the field scene. 43 and a float angle sensor 150 that detects the amount of rise and fall before and after the float caused by the amount of fluctuation in ground height are connected. A rolling motor 25 that performs rolling control of the planting part to the left and right based on this is connected to a lifting hydraulic electromagnetic valve 27 that controls the planting part to move up and down based on the detection result of the amount of rise and fall before and after the float angle sensor.

  As shown in the chart of FIG. 24, when the soil is soft, the float sinks and rises to the front angle, and the response of the float becomes insensitive, so the rolling motor speed is slow and the soil is hard Since the float floats and falls at the front angle, the responsiveness of the float becomes sensitive, so the rolling motor speed is increased. Thus, appropriate rolling control according to soil conditions can be performed to improve planting accuracy.

  FIG. 27 shows a coastal rice transplanter in which drive wheels 1761 and 171 are provided on the rear side of the float 170, and a seedling planting device 172 is provided between the drive wheels 171 and 171. The seedling planting device 172 takes out a single seedling from a seedbed placed on the float 160 and performs a planting operation.

  The front guide rollers 173R, L and the rear guide rollers 174R, L are provided by projecting left and right before and after the machine body, and the front guide rollers 173R, L and the rear guide rollers 174R, L are in contact with the shore. Run to plant seedlings.

FIG. 28 thru | or FIG. 30 has shown the front part of the walk type rice transplanter.
When transporting the walking type rice transplanter, a saddle-like support base is attached to the lower part of the front bumper 180 and attached to the mounting shaft 183 so that the vehicle body is in an inverted state. 181 is attached. The travel assist frame 181 is provided with a connecting rod 184 that connects the front bumper 180 and is fixed by a hook 185 and a locking lever 186, and travels while the vehicle body is lifted by the driving wheels and wheels 182 that are later when traveling on the road.

  At the time of rice planting work, the connecting rod 184 is removed from the front bumper 180 and the lifting hook 187 is hooked on the front bumper 180 so that the wheel 182 is lifted.

2 Traveling body 13 Control seat 14 Step floor 15 Spare seedling stand 17 Water tank for spraying 44R, 44L Handle 47 Auxiliary handle

Claims (3)

  In a riding type seedling transplanter in which a step floor (14) is provided around a control seat (13) on a traveling vehicle body (2), and spare seedling platforms (15) are provided on left and right sides on the step floor (14). A riding-type seedling transplanting machine, wherein the preliminary seedling mounting table (15) is provided with handles (44R) and (44L) for getting on and off.   The handles (44R), (44L) provided on the left and right spare seedling stage (15) are provided on the front inner side of the preliminary seedling stage (15) and on the rear outer side of the preliminary seedling stage (15). Riding seedling transplanter.   The spray water tank (17) is provided at the rear part of the spare seedling stage (15) with a boarding / alighting interval, and in addition to the handles (44R) and (44L) of the preliminary seedling stage (15), the spray water tank (17) The riding type seedling transplanter according to claim 1 or 2, further comprising an auxiliary handle (47) provided thereon.

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