JP3746402B2 - Rice transplanter seedling planting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a seedling mounting table having an inclined posture in which a plurality of seedling mounting surfaces are formed, and a plurality of planting mechanisms for cutting seedlings from the lower ends of the seedlings mounted on the respective seedling mounting surfaces and transplanting the seedlings in a field scene And a seedling planting device of a rice transplanter comprising a lateral feed mechanism for reciprocating the seedling platform in the horizontal direction. Specifically, the dimensions of the seedling platform in the lateral direction during transportation and storage by truck It is related with the technology which reduces
[0002]
[Prior art]
As a seedling planting device configured as described above, there is one disclosed in Japanese Patent Laid-Open No. 10-33033. In this conventional example, a seedling placing base is a seedling placing portion at a central position, and seedling placing portions at both ends thereof. And is configured to be switchable between a state in which the respective seedling placement parts are connected by a lock mechanism and a state in which the connection by the lock mechanism is released and separated. By releasing the connection by the mechanism and separating the seedling placement parts at both ends, supporting the seedling placement parts separated in this way on the side of the seedling placement surface on both sides of the seedling placement part at the center position The size in the width direction of the seedling stage can be reduced.
[0003]
[Problems to be solved by the invention]
When the size of the seedling platform is reduced in the width direction, when the both ends of the seedling platform are separated as in the prior art, a lock mechanism is provided at two positions on both ends of the center seedling platform. It is easy to make the structure complicated because it is necessary to detachably mount the seedling mounting portions at both ends. Therefore, only one end of the seedling platform is configured to be separable, and the end of the seedling platform is separated while the seedling platform is moved to the end of the separable configuration side. In the same manner as in the prior art, it is possible to reduce the size of the seedling platform in the lateral width direction and to simplify the structure. However, when placing a separate seedling platform, the separated seedling platform is moved and set to a preset loading position while being lifted by the operator, so it is not easy to handle heavyly. In many cases, it takes a lot of time to set the mounting position, and a structure that can reduce the size in the lateral width direction by separating the seedling platform at a reasonable position is desired.
An object of the present invention is to constitute a seedling planting device of a rice transplanter that can divide a seedling platform at a reasonable position and reduce the size in the width direction by an easy operation.
[0004]
[Means for Solving the Problems]
A first feature of the present invention (Claim 1) is that a seedling is cut out from a seedling mounting table having an inclined posture in which a plurality of seedling mounting surfaces are formed, and lower ends of the seedlings mounted on the respective seedling mounting surfaces. A plurality of planting mechanisms for transplanting to a farm scene, a slide rail that supports the seedling table so as to be movable in the horizontal direction, and a lateral feed mechanism that reciprocates the seedling table along this sliding rail In the seedling planting device of the rice transplanter, the seedling platform is composed of a separated seedling platform at one end position of the seedling platform and a main seedling platform to which the separated seedling platform is connected. And a connecting means for connecting and separating these, and a storage portion for supporting the separated seedling stand separated by releasing the connection means is formed at the end position of the main seedling stand on the separated seedling stand side And also In the state where the main seedling platform and the separated seedling platform are connected, the separated seedling platform is in a non-connected state with the frame on the side supporting the seedling platform, and the separated seedling platform is separated from the main seedling platform. The separation seedling stage is equipped with an automatic linkage mechanism that automatically connects to the frame via an auxiliary arm as the separation seedling stage moves in a direction in which the seedling stage is completely separated and separated. A frame-side connecting portion in which the separated seedling platform is connected to the frame via the auxiliary arm. By swinging around the center, guide it above the seedling placement surface of the main seedling placement stand and set it in the storage section It is configured as The operation and effect are as follows.
[0005]
According to a second feature of the present invention (Claim 2), in Claim 1, the storage unit includes a support member that supports the separated seedling platform, and the weight of the separated seedling platform is received with respect to the support member. It is in the point comprised so that it may support, The effect | action and effect are as follows.
[0006]
A third feature of the present invention (Claim 3) is that in Claim 1, the auxiliary arm regulates a swinging posture in a state where the separated seedling stage is guided to the storage portion. The auxiliary arm is configured to receive and support the weight of the separated seedling platform, and its operation and effect are as follows.
[0007]
Of the present invention The fourth feature (Claim 4) is that of Claims 1 to 3. In any one of the above, the storage configuration of the storage unit is set so that when the separated seedling platform is set at the storage position, a width smaller than the entire width of the separated seedling platform overlaps the main seedling platform. The operation and effect are as follows.
[0008]
Of the present invention The fifth feature (claim 5) is claim 4. In the above, the width of the separated seedling stage is set to 2 and the amount of overlap with the main seedling stage is set to about 1 in the storage part, and the operation and effect are as follows. It is.
[0009]
Of the present invention The sixth feature (claim 6) is that of claims 1 to 5. In any one of the above items, the seedling stage is separated from the main seedling stage only in a state where the seedling stage is set at a laterally moving end on the side where the separated seedling stage is formed or in the vicinity of the moving end. It is in the point comprised so that isolation | separation of a mount can be performed, The effect | action and effect are as follows.
[0010]
Of the present invention The seventh feature (Claim 7) is that of Claims 1 to 5 In any one of the above, the separated seedling platform is separated from the main seedling platform in a state where the seedling platform is set at the storage start position outside the lateral movement end on the side where the separated seedling platform is formed. Therefore, the operation and the effect are as follows.
[0011]
[Action]
[0012]
According to the first feature, when the separated seedling platform is set in the storage unit, the separation seedling platform is separated from the main seedling platform by releasing the connection means, As the separated seedling stage separated from the main seedling stage is moved in the separating direction, it is automatically connected to the frame on the side supporting the seedling stage by the automatic linkage mechanism via the auxiliary arm and separated. A connecting part on the frame side through the auxiliary arm By swinging around the center, it is possible to guide the separated seedling platform linked to the swinging end of the auxiliary arm to an appropriate position of the storage unit. That is, it is not necessary to perform the operation of lifting the separated seedling platform as in the conventional example, and the separated seedling platform is moved to the direction where the auxiliary arm guides, and the separated seedling platform is placed in an appropriate position of the storage unit. Since the auxiliary arm swings around the frame side of the seedling planting device, it can be supported more firmly than, for example, a structure in which the auxiliary arm is linked to the main seedling stand. Thus, the separated seedling stage can be stably guided with high accuracy.
[0013]
the above First feature According to, when working with the main seedling stand and the separate seedling stand, Separate seedling platform is not connected to the frame that supports the seedling platform If the separated seedling platform is separated from the main seedling platform, it will not interfere with the lateral movement of the seedling platform. As the seedling stand is moved in the direction of separation Automatic linkage mechanism The separated seedling platform is automatically connected to the frame via an auxiliary arm. This eliminates the need for the operator to manually link.
[0014]
According to the second feature, when the separated seedling platform is set in the storage unit, the support member supports the separated seedling platform in a state where it receives the weight of the separated seedling platform. Can be stably maintained.
[0015]
According to the third feature, when the separated seedling stage is set in the storage unit, the auxiliary arm is supported in a state of receiving the weight of the separated seedling stage by restricting the swing of the auxiliary arm. Using this weight, it becomes possible to stably maintain the position of the separated seedling stage.
[0016]
the above 4th According to the feature, when the separated seedling platform is set in the storage section, a part of the separated seedling platform is projected outward from the end of the main seedling platform. The end of the auxiliary arm can be easily linked. For example, it is more linked than the case where the end of the auxiliary seedling platform and the end of the main seedling platform are set to the storage position in the form of matching. The structure can be simplified.
[0017]
the above 5th According to the feature, the width of one strip can be reduced in the width direction of the seedling stage.
[0018]
the above 6th According to the feature, the separated seedling platform is separated from the main seedling platform only when the seedling platform is set to the lateral moving end on the side where the separated seedling platform is formed or in the vicinity of this moving end. As a result, it is possible not only to eliminate erroneous operations when reducing the lateral dimensions of the seedling platform, but also to easily inspect and repair the detached seedling platform that has been removed by this separation. In addition, when separating the seedling stand, the amount of protrusion on the projecting side of the seedling stand that is moved to one side in the horizontal direction is reduced. It is possible to reduce the overhang on both sides without adopting a separating structure.
[0019]
the above 7th According to the feature, the separated seedling platform is separated from the main seedling platform only when the seedling platform is set at the storage start position outside the lateral movement end on the side where the separated seedling platform is formed. Since it can be moved to the storage section, it can not only eliminate erroneous operations when reducing the lateral dimensions of the seedling platform, but it can also reduce the amount of protrusion on the projecting side of the seedling platform that is shifted to one side in the lateral direction. Since the separated seedling stage to be operated is moved, it is possible to reduce the overhang on both sides without adopting a structure for separating both ends of the seedling stage as in the conventional example.
[0020]
〔The invention's effect〕
Therefore, since the seedling planting device of the rice transplanter that can reduce the size in the width direction by a simple operation of dividing the seedling platform and swinging and guiding the separated seedling platform via the auxiliary arm has been configured. In addition, it is possible to perform the operation of reducing the lateral dimension of the seedling stage without taking time and effort while setting the seedling stage to an appropriate position to prevent erroneous operation. The (Claim 1). Further, the separated seedling stage can be stably held with respect to the storage portion. ), Minutes Simplify the linkage between the seedling stand and the auxiliary arm to facilitate production ( Claims 4 and 5 ), It is possible to easily reduce the lateral dimension of the seedling platform by reducing the lateral protrusion and to check and repair the separated seedling platform with a simple operation that prevents erroneous operation ( Claim 6 ), The operation that prevented the wrong operation, and the protrusion to the both sides of the seedling platform was reduced, it was possible to easily reduce the size in the width direction ( Claim 7 ).
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an engine 3 is mounted on the front part of a traveling machine body including a driving type front wheel 1 and a driving type rear wheel 2 that are steered, and an engine is mounted on the front part of the traveling machine body. 3 is a hydrostatic continuously variable transmission H to which power from 3 is transmitted, a transmission case 4 at a front position to which power from the continuously variable transmission H is transmitted, and a rear portion to which power from the transmission case 4 is transmitted. Each rear axle case 5 is disposed, and a steering handle 6 and a driving seat 7 are disposed at the center of the traveling body, and the parallel 4 is driven and lifted by a lift cylinder 8 with respect to the rear end of the traveling body. A seedling planting device A for 8-row planting is connected via a continuous link mechanism L, and a fertilizer B is provided at the rear of the traveling machine body to constitute a rice transplanter as a paddy field work machine.
[0022]
The transmission case 4 includes a differential mechanism (not shown) that transmits power to the left and right front wheels 1 and 1, and an inter-strain transmission mechanism that sets the number of times of seedling planting operation of the seedling planting device A per unit travel distance (see FIG. (Not shown) and a planting clutch C that transmits and shuts off the power from the mission case 4 to the seedling planting apparatus A. The rear axle case 5 has a built-in transmission mechanism (not shown, not equipped with a differential mechanism) for transmitting power to the left and right rear wheels 2 and 2.
[0023]
A main transmission lever 9 for shifting the continuously variable transmission H is arranged on the left side of the meter panel portion in front of the driver's seat 7, and a gear-type auxiliary transmission (in the transmission case) is installed on the left side of the driver's seat 7. A sub-shift lever 10 for performing a speed change operation is arranged, and an elevating lever 11 for raising / lowering the seedling planting device A and controlling the planting clutch C is arranged on the right side of the driver's seat 8, and the steering handle The forced elevating lever 12 is disposed in the vicinity of 7. The lift lever 11 controls the raising / lowering of the seedling planting device A and the on / off control of the planting clutch C, and the forced lifting lever 12 forces the seedling planting device A in the grounded state to the upper limit. Control for raising, control for disengaging the planting clutch C in conjunction with this forced rise, and control for forcibly lowering the seedling planting device A in the raised state to the ground level by this forced rise control The planting clutch C is configured to be turned on and off by the driving force of the electric motor CM as shown in FIG.
[0024]
As shown in FIGS. 1 to 6, the link mechanism L is composed of a pair of left and right top links 15, a pair of left and right lower links 16, and a vertical link 17 at the rear end. Thus, the transmission case 18 of the seedling planting apparatus A is connected so as to be able to roll around the rolling axis X in the front-back orientation. Further, a transmission shaft 19 for transmitting the power from the traveling machine body 3 to the transmission case 18 is formed, and the seedling planting apparatus A is in the form of a square pipe having a horizontally long posture connected to the transmission case 18 and the transmission case 18. The tool frame 20, the front end of which is connected and fixed to the tool frame 20, four chain cases 21 to which power from the transmission case 18 is branched and transmitted, and the left and right positions of the rear portions of the chain cases 21 are arranged. The planting mechanism D for 8 strips, the seedling placing table 22 in an inclined posture on which the mat-like seedlings W are placed, and five leveling floats 23 are provided. Of the five leveling floats 23, the center position 23C in the left-right direction is used as a sensor float when the raising / lowering control of the seedling planting device A is performed following the farm scene S.
[0025]
The fertilizer applicator B includes a hopper 26 that stores granular or powdered fertilizer, and also feeds the fertilizer from the hopper 26 for eight strips, and fertilizer fed from the feed mechanism 27 by wind pressure. The blower 28 driven by the blower motor 28M to be sent, the eight fertilizer hoses 29 to which fertilizer is sent by the blower action from the blower blower 28, and the fertilizer from these fertilizer hoses 29 are fed under the field scene S. It comprises eight groovers 30 supported by the five leveling floats 23.
[0026]
As shown in FIGS. 7, 8, and 12, the planting mechanism D is attached to the rotary case 33 and the rotary case 33 that rotates around the axis of the horizontal posture by the power from the chain case 21. It has a planting arm 34 and a planting claw 35 provided in each planting arm 34, and the planting claw 35 seeds a seedling from the lower end of the mat-like seedling W placed on the seedling stage 22 at the time of planting work. It is comprised so that the operation | movement cut out and transplanted to the farm scene S may be performed. Further, a hooking clutch E is built in the rear end portion of each chain case 21, and the transmission to the pair of left and right rotary cases 33 is cut off by the cutting operation of the hooking clutch E, thereby stopping the two-row planting. It has become possible. As shown in FIGS. 5 and 6, the left side surface of the transmission case 18 protrudes around the axial center of the lateral posture in a state where the screw shaft 37 in which the spiral groove 37S is formed is covered with a rubber bellows. The cross feed mechanism F is configured by fixing the top member 38 engaged with the spiral groove 37S of the screw shaft 37 to the side of the seedling mounting table 22 on the side opposite to the seedling mounting surface via the holder 39. The seedling stage 22 is reciprocated in the horizontal direction by the lateral feed mechanism F. Further, a drive shaft 41 is disposed on the right side surface of the transmission case 18 so as to be rotatable around a laterally oriented axis, and an interval equal to the reciprocating stroke of the seedling stage 22 by the screw shaft 37 with respect to the drive shaft 41. A pair of drive arms 42 are provided.
[0027]
As shown in FIGS. 2 and 3, a horizontally long slide rail 43 is provided on the upper surface of the chain case 21, and a horizontally long guide rail is provided at the center position in the vertical direction on the side opposite to the seedling placement surface of the seedling stand 22. 44, a horizontally long pipe frame 46 extending between the left and right support columns 45, 45 erected on both ends of the tool frame 20, and a guide shoe 47 (see FIG. 21) on the lower surface of the seedling platform. At the same time as being placed on the slide rail 43, as shown in FIGS. 7 to 11, a plurality of guide rollers 48 provided in the pipe frame 46 are engaged with the guide rail 44, so that the slide rail 43 and the guide rail 44 are engaged. Thus, the seedling support 22 is supported so as to be movable in the left-right direction. The tool frame 20 is provided with a protective frame 49 made of a round pipe in a shape projecting from the left and right outer ends of the slide rail 43 at both end positions.
[0028]
As shown in FIGS. 3 and 4, a balance spring 51 is interposed between the upper end position of the vertical link 17 and the seedling stage 22, and the driving force of the rolling motor 52 provided at the upper end of the vertical link 17 is used. A rolling operation system for rolling the seedling planting apparatus A with the driving force of the rolling motor 52 by interposing a rolling spring 54 between both ends of the rod 53 that operates in the lateral direction in a screw manner and the pipe frame 46. It is configured. With this configuration, even when the seedling platform A slides left and right and the weight balance between the left and right is lost, the posture of the seedling planting device A is not greatly changed by the biasing force of the balance spring 51, and the traveling machine body Is tilted in the left-right direction, the rod 53 is actuated by the driving force of the rolling motor 52 and the rolling posture of the seedling planting device A is corrected via the rolling spring 54, whereby the seedling planting device A is It is possible to maintain a posture that follows S.
[0029]
As shown in FIGS. 2, 3, 18, and 19, the seedling placing table 22 is provided with eight seedling placing surfaces 22 </ b> B in which the vertical wall 22 </ b> A is disposed at the boundary position. A plurality of seedling stays 58, a vertical feed mechanism G for sending the mat strip seedlings W downward, and a seedling remaining amount sensor T in a state of being installed in the vertical wall 22A are provided so as to prevent the mat-like seedlings W from floating. The seedling stay 58 is supported between a support body 59 at the upper position and a support plate 60 at the lower position. As shown in FIGS. 16, 21, 22, and 23, the shaft core in the lateral orientation is formed at the lower portion of the seedling stage 22. Around A longitudinal feed shaft 61 having a hexagonal cross section is rotatably provided. The longitudinal feed mechanism G is wound around the lower roller 62 that is externally fitted to the longitudinal feed shaft 61, the upper roller 63 disposed above the lower roller 62, and the like. A vertical feed belt 64 is provided (a pair of left and right vertical feed belts 64 are disposed on one seedling placement surface 22B as shown in the figure). The vertical feed shaft 61 includes an operated arm 65 that contacts the pair of left and right drive arms 42, 42, and a one-way clutch 66 that transmits the driving force from the operated arm 65 to the vertical feed shaft 61. A vertical feed clutch J operated via a lever 67 so as to transmit the rotational power from the vertical feed shaft 61 to the adjacent two vertical feed mechanisms G, G is provided between the adjacent lower rollers 62. . The seedling remaining amount sensor T has a contact piece 68 that is projected and urged so as to come into contact with the mat-like seedling W placed on the seedling mount 22 and the presence / absence of the seedling W from the posture of the contact piece 68. It is comprised with the limit switch 69 which discriminate | determines.
[0030]
The leveling float 23 is supported so that its front end is displaced up and down by swinging around the axial center of the lateral position of the rear position. Of the leveling float 23, the float 23C at the center position in the left-right direction swings. Elevating / lowering for controlling the lift cylinder 8 so as to maintain a detection result from the detection system at a target value with a detection system for measuring a vertical distance between the seedling planting device A and the field scene S from a moving posture. Control means (not shown) are provided. Further, as shown in FIG. 3, the seedling planting device A is provided with a seedling removal amount adjusting lever 72 and a planting depth adjusting lever 73 in a state of being engaged and supported by the lever guide 71 on the front side thereof. Of the levers 72 and 73, the seedling adjustment lever 72 is operated in the vertical direction to displace the slide rail 43 in the vertical direction, so that the seedling of the seedling is changed from the change in the operation locus of the planting claw 35 and the relative position of the slide rail 43. The removal amount can be adjusted, and the planting depth lever 73 is adjusted up and down so that the rear end position of the leveling float 23 is displaced up and down, whereby the operation locus of the planting claw 35 and the field scene S The depth at which the planting claw 35 inserts the seedling into the field scene S can be adjusted from the change in the relative position.
[0031]
Since it comprised in this way, when transplanting a seedling, the seedling planting apparatus A is raised / lowered following the farm scene S in the state which set the amount of seedlings and planting depth to the required value. By placing and operating the planting clutch C in a controlled state, the seedling stage 22 was placed on the seedling stage 22 while being fed laterally along the slide rail 43 by the driving force from the lateral feed mechanism F. The seedlings at the lower end of the mat-like seedling W are sequentially cut out in the horizontal direction by the planting claws 35 and transplanted to the farm scene S. When the seedling stage 22 reaches the end in the horizontal movement direction, the operated arm 65 with respect to the drive arm 42 is operated. , The vertical feed shaft 61 is rotated by a set amount, and each vertical feed mechanism G is operated to feed the mat-like seedlings W downward. In order to reduce the number of seedlings, the cutting operation is performed by selecting one of the four hook clutch levers 74 (see FIG. 1) linked to the hook clutch E and the longitudinal feed clutch J. By doing so, it is possible to stop planting in units of 2 plants.
[0032]
In this seedling planting apparatus A, two seedling placement surface portions at the end opposite to the operated arm 65 of the seedling placement platform 22 are set on the separated seedling placement platform 22S, and the remaining 6 seedling placement platforms are provided. The surface portion is set to the main seedling stage 22M, and the separated seedling stage 22S is configured to be connected to and separated from the main seedling stage 22M via the connecting means K. A storage portion P for supporting the separated seedling placing table 22S is formed on the seedling placing surface 22B side at the end position on the placing table 22S side, and the separated seedling placing table 22S separated by the disconnection of the connecting means K is provided. An auxiliary arm 77 for guiding to the storage portion P is provided.
[0033]
That is, the guide rail 44 is divided in advance into dimensions corresponding to the main seedling stage 22M and the separated seedling stage 22S, and as shown in FIGS. 22 and 23, the vertical feed shaft 61 is connected to the main seedling stage 22M. A bush 78 that is divided into dimensions corresponding to the separated seedling stage 22S in advance and that is externally fitted to the end of the vertical feed shaft 61 on the separated seedling stage 22S side and rotates integrally with the split surface. A joint is provided that is slidably fitted to the vertical feed shaft 61 on the stage 22M side and is urged in a protruding direction by a spring 79. The seedling stays 58 are composed of 6 parts of the main seedling stage 22M and 2 parts of the separated seedling stage 22S, and the seedling remaining amount sensor T located on the dividing surface is shown in FIG. 16, it is provided via a support plate 80 attached to the main seedling stage 22M side.
[0034]
As shown in FIGS. 13 to 19, the connecting means K includes a nut 81 fixed to the end of the main seedling stage 22M and a screw shaft with a knob 82N that penetrates the separated seedling stage 22S in the lateral direction. 82 and a pair of upper and lower lock screws, and as shown in FIGS. 11 and 12, the clamping member 83A at the base end is moved by the swinging operation so that the vertical wall 22A on the separated seedling platform 22S side and the main seedling platform The lock lever 83 includes three clamping levers 83A that are switchable between a state in which the vertical wall 22A on the 22M side is coupled by clamping and a state in which the clamping state is released. Further, the position of the lower knob 82N is arranged in the vicinity of the upper surface of the slide rail 43, so that the slide rail 43 is moved only when the seedling support 22 reaches the stroke end on the side of the separate seedling support 22S. The rotating operation can be performed without being obstructed (see FIG. 16). Furthermore, as shown in FIG. 22, at the lower position of the split surface between the main seedling stage 22M and the separated seedling stage 22S, the separated seedling stage 22S is swung around the axis 85 on the main seedling stage 22M side. The swinging piece 87 engaged with the engaged portion 86 is biased in the engaging direction by the biasing force of the spring 88, and the swinging piece 87 is entirely separated from the seedling placing base 22S. When it reaches the end on the side, it is configured to swing in the disengagement direction against the urging force of the spring 88 by contact with the contact piece 89 provided on the slide rail 43. Further, as shown in FIG. 17, the main seedling stage 22M is positioned near the nut 81 constituting the upper lock screw. Side of Separated seedling stage 22S has been separated Detect A limit switch type separation sensor 90 is provided. The separation sensor 90 is configured such that the sensor main body is supported by the constituent members of the main seedling stage 22M, and contact pieces protruding from the sensor main body come into contact with the constituent members of the separation seedling stage 22S to determine the presence or absence of contact. Used by things Be .
[0035]
As shown in FIG. 24, a through hole 91 is drilled at an upper position of the split surface of the main seedling table 22M, and an engagement pin 92 that engages with the through hole 91 is provided on the split seedling table 22S side. As shown in FIGS. 7 to 12, 20, and 25, the storage portion P is an outer end side of an arched rod 95 provided at an upper position on the side of the seedling mounting surface 22B of the main seedling mounting base 22M. And an arch-shaped rod 98 provided at a lower position on the side of the seedling mounting surface 22B of the main seedling mounting base 22M. A rubber support member 96 provided at both end positions, and a swingable position around a shaft in a lateral posture so as to press down the lower portion of the separated seedling table 22S from above at the lower position, and attached in the pressing direction by a spring 99 And a pressing rod 100 that is biased. The spring plate member 97 is formed with an engagement hole 97A and a guide surface 97B, and a handle 101 (see FIG. 19) is provided at a lower position on the seedling mounting surface side of the separated seedling mounting table 22S. .
[0036]
As shown in FIGS. 15, 17, and 24 to 29, the auxiliary arm 77 is made of a material obtained by forming a metal plate into a wide channel shape in the vertical direction, and the auxiliary arm 77 in the vertical direction of the separated seedling platform 22S. The support member 103 connected and fixed at an intermediate position is supported so as to be swingable around a support shaft 104 in a vertical orientation, and the lower surface of the end of the auxiliary arm 77 on the side opposite to the support member is on the side opposite to the support member 103 A contact surface 77S in a horizontal posture is formed in a state of being connected to an inclined surface having a lower level, and a guide roller 105 is provided in the vicinity of the inclined surface and is supported loosely around an axial core in a horizontal posture. A shaft body 106 in a vertically oriented posture projects downward from the end, and a contact arm 107 is provided at the lower end of the shaft body 106. Further, an engaged member 108 fixed to the support member 103 is disposed at a position in the vicinity of the support shaft 104, and the lock piece 109 that engages and disengages with the engagement hole 108A of the engaged member 108 is assisted. A rod 111 slidable along the longitudinal direction of the arm 77 is provided at one end, and a spring 111 for biasing the lock piece 109 in the direction of the engagement hole 108A is provided, thereby locking the engagement hole 108A. The auxiliary arm 77 can be maintained in a posture parallel to the separated seedling stage 22S by the engagement of the piece 109, and the operated portion 110A is formed by bending the end portion of the rod 110 on the side opposite to the lock. .
[0037]
Further, at the end of the pipe frame 46 on the side of the separated seedling stage 22S. for A bracket 113 in which an upper wall and a lower wall are integrally formed by bending a metal plate is provided, and an arc-shaped contact member 114 for holding the shaft body 106 between the upper wall and the lower wall of the bracket 113. The guide recesses 113A and 113A for guiding the shaft body 106 with respect to the contact member 114 are formed in the upper wall and the lower wall, and the shaft recess 106 is engaged with the contact member 114. A pair of lock arms 117 urged by a spring 115 to be held and swingable around a shaft 116 are provided, and further, the outer end side of the separated seedling table 22S is connected to the upper wall of the bracket 113. About A guide surface 113S is formed as an inclined surface having a high level.
[0038]
As shown in FIGS. 32 and 33, the protective frame 49 is supported so as to be movable in and out in the lateral direction with respect to the tool frame 20, and lock holes 49A and 49A are formed in the proximal end side and the distal end side. In addition, a lock pin 119 detachably engageable with the respective lock holes 49A and 49A is provided in a state in which the support member 118 fixed to the tool frame 20 is urged by a spring 120 in the engagement direction. Further, as shown in FIGS. 31A and 31B, the slide rail 43 is separated and connected by a main slide rail 43M and separate slide rails 43S and 43S at both ends of the slide rail main body 43M. It is configured to be freely connected. Specifically, wing nuts 123 screwed with bolts 122 provided on the lower surface of the main sliding rail 43M are provided on the lower surface sides of both ends of the main sliding rail 43M, and the lower surface side of the split end of the separation sliding rail 43S. Is provided with a plate 125 having a notch formed so as to be tightened by a collar 124 fitted around the bolt 122. When the slide rail 43 is divided, the separation slide rail 43S can be removed from the main slide rail 43M by loosening the wing nut 123 and pulling the separation slide rail 43S outward. ing. It should be noted that the separated sliding rail 43S thus removed is located at the opening of the locking piece 126 provided on each of the left and right support columns 45. Left and right It is held by the seedling planting device A by being locked in the inserted state.
[0039]
In this rice transplanter, the width of the seedling planting device A is about 2.7 meters. By reducing this size, the size of the 4-ton truck bed in the width direction can be within 2.4 meters. It has become. And when performing the reduction | decrease of this dimension, operation is performed in the following procedures.
[0040]
First, the planting clutch C is turned on and controlled by operating the lifting lever 11, and the seedling stage 22 is moved to the end of the separated seedling stage (the moving end on the left side in the figure), and this end is reached. The planting clutch C is disengaged at the timing to stop the movement. Next, in this state, the separated seedling mounting base 22S is separated from the main seedling mounting base 22M by operating the lock screw knob 82N and the lock lever 83. When the seedling stage 22 is set at the end position as described above, the swing piece 87 reaches the disengagement posture by contact with the contact piece 89 as shown in FIG. The seedling stage 22S can be moved outward along the slide rail 43. Then, as shown in FIGS. 17 and 18, the separated seedling platform 22S and the auxiliary arm 77 are integrally moved outward by pulling the separated seedling platform 22S outward, and FIG. 27, by this movement, the guide roller 105 of the auxiliary arm 77 lifts the separated seedling stage 22S upward by contact with the guide surface 113S of the bracket 113, and further continues the moving operation. At the same time when the contact surface 77S of the auxiliary arm 77 rides on the upper surface of the bracket 113, the shaft body 106 of the auxiliary arm 77 is sent to a position where it contacts the contact member 114 of the bracket 113 as shown in FIG. As a result, the lock arm 117 embracs the shaft body 106 and reaches the locked state. In addition, the automatic linkage mechanism is configured by a system that sets the auxiliary arm 77 in the linked state by moving the separated seedling stage 22S in this way.
[0041]
When this state is reached, that is, when the separated seedling stage 22S reaches the storage start position, the operated portion 110A at the end of the rod 110 contacts the contact member 114, and the lock piece 109 is engaged with the engaged member 108. Swinging around the support shaft 104 of the auxiliary arm 77 separated from the engagement hole 108A Forgive In this state, when the separated seedling stage 22S is lifted, the guide shoe 47 of the auxiliary seedling stage 22S is lifted from the slide rail 43, and as shown in FIG. As a result of the notch 44 </ b> A formed in 44 reaching the position of the guide roller 48, the separated seedling stage 22 </ b> S can be pulled out backward without being obstructed by these.
[0042]
Next, the auxiliary arm 77 is swung around the axis of the shaft body 106 as shown in FIG. By moving, the separated seedling stage 22S is guided toward the main seedling stage 22M, and at the same time, the posture of the seedling stage 22B of the separated seedling stage 22S by the swinging of the separated seedling stage 22S around the support shaft 104. Can be maintained in a posture parallel to the seedling mounting surface 22B of the main seedling mounting table 22M, and the separated seedling mounting table 22S can be set at the storage position P by sending the separated seedling mounting table 22S to the moving end of this swinging. It has become. At this time, the engaging pin 92 is engaged with the engaging hole 97A of the spring plate member 97 (see FIG. 30). In addition, as shown in FIG. The separated seedling stage 22S can be held in the storage part P by pressing the lower part of the stage 22S. When the separated seedling stage 22S is set in the storage part P in this way, only one line inside the separated seedling stage 22S overlaps with the main seedling stage 22M in plan view. Thus, the width of the seedling stage 22 can be reduced by the overlap amount, that is, the size of one strip (about 30 centimeters).
[0043]
When the auxiliary arm 77 guides the separated seedling platform 22S to the storage portion P, the contact arm 107 formed at the lower end of the shaft body 106 contacts the lower surface of the lower wall of the bracket 113 at the initial stage of the swinging operation. Thus, the inclination of the auxiliary arm 77 is suppressed, and as shown in FIG. 25, the auxiliary arm 77 exceeds the dead point DP in a posture orthogonal to the seedling mounting surface 22B of the main seedling mounting table 22M. Therefore, the position of the separated seedling stage 22S set in the storage unit P is stabilized while being supported by the main seedling stage 22M by its own weight.
[0044]
Thereafter, the butterfly bolt 123 is loosened to remove the separation slide rails 43S and 43S at both ends, and the locking piece 126 (see FIG. 9) provided on the left and right support columns 45, as shown in FIG. The lock pins 119 of the protection frames 49 at both ends are pulled out and the lock frames 119 are pushed inward, and then the lock holes 49A on the outer end side are selected and the lock pins 119 are inserted. Thus, the width of the entire seedling planting apparatus A is reduced. Thereafter, when the auxiliary seedling stage 22S is connected to the main seedling stage 22M, the reverse operation is sufficient.
[0045]
In this rice transplanter, a control system for lifting control and planting clutch C control includes a control device 130 having a microprocessor as shown in FIG. That is, the controller 130 measures the position of the potentiometer type lever sensor 11S that measures the operation position of the elevating lever 11, the forced elevating switch 12S that detects the operation of the forced elevating lever 12, and the attitude of the leveling float 23C. Signals from the float sensor 23S, the sensitivity setter 131S operated by the sensitivity setting dial 131, the upper limit sensor 132 for determining that the seedling planting apparatus A has reached the upper limit from the posture of the link mechanism L, and the signals from the separation sensor 90, respectively. And a system for outputting control signals to the electromagnetic valve 8V for controlling the hydraulic oil for the lift cylinder 8 and the electric motor CM for controlling the planting clutch C, respectively. In the control device 130, when the leveling float 23 of the seedling planting device A is grounded to the farm scene S and the lift control to follow the farm scene S is performed, it corresponds to the sensitivity value set by the sensitivity setting unit 131S. Automatic control is performed to maintain the posture of the leveling float 23C at the target posture, and automatic detection is performed when a signal from the forced lift sensor 12S detects that the forced lift lever 12 has been operated in the upward direction during this automatic control. Prior to the control, the solenoid valve 8V is controlled to start raising the seedling planting device A, and the electric motor CM is controlled to perform the operation of disengaging the planting clutch C. When it is detected that the upper limit has been raised to the upper limit, the rise is stopped, and further, when it is detected by a signal from the forced raising / lowering sensor 12S that the forced raising / lowering lever 12 is operated in the lowering direction in this raised state. Earth float 23 causes it to lower the seedling planting apparatus A until the ground, leveling float 23 is made as to return to the automatic control after grounding. In particular, in this control device 130, when the signal from the separation sensor 90 detects that the separated seedling stage 22S is separated from the main seedling stage 22M, the planting clutch C is also operated when the lifting lever 11 is operated. The program is set so that it cannot be controlled.
[0046]
As described above, in the present invention, since one end of the auxiliary arm 77 is supported on the separated seedling stage 22S side, the linkage portion to be configured to be detachable as compared with the linkage at both ends is simply provided. When the size of the seedling planting apparatus A is reduced in the horizontal width direction, the seedling stage 22 is set at the moving end on the side of the separated seedling stage 22S, and the connecting means is provided. The auxiliary arm 77 is automatically moved to the pipe frame 46 side of the seedling planting device A only by performing the operation of releasing the connection of T and separating the separated seedling stage 22S from the main seedling stage 22M by human operation. In this linked state, the separated seedling stage 22S is moved along the arcuate path by swinging the auxiliary arm 77 only by moving the separated seedling stage 22S toward the seedling stage. The platform 22S is guided to the storage part P to be in an appropriate position. Has become what can Tsu door. Also, according to this structure, the separate seedling stage 22S is separated from the main seedling stage 22M. Isolated Immediately after the separation, the separated seedling stage 22S can be removed, and the separated seedling stage 22S can be easily inspected and repaired. In particular, when the seedling stage 22 is set at the moving end on the side of the separated seedling stage 22S, it has a structure that allows separation of the separated seedling stage 22S. There is no inconvenience of starting the operation, and the auxiliary arm 77 is automatically linked only when the seedling stage 22 is set at an appropriate position and the separated seedling stage 22S is separated and moved outward. Therefore, the labor of the operator is saved, and the separated seedling stage 22 is set in the storage portion P by the smooth operation by the swinging of the auxiliary arm 77, and the lateral dimension of the seedling stage 22 is reduced. Can be done easily.
[0047]
[Another embodiment]
In addition to the above-described embodiment, the present invention is configured such that, for example, a pair of upper and lower auxiliary arms 77 is formed so as to support the entire weight of the separated seedling platform 22S, and a stopper or the like that restricts swinging of the auxiliary arm 77 When the separated seedling stage 22S is guided with respect to the storage part P of the main seedling stage 22M by providing the member, a support member or the like is set and received so as to hold the separated seedling stage 22S in the storage part P. It is also possible to configure without. In addition, one end of the auxiliary arm 77 is swingably supported on the pipe frame 46 of the seedling planting apparatus A, and when not linked, the swinging of the auxiliary arm 77 is restricted and the seedling placing table 22 is moved. When the separated seedling placing table 22S is separated and moved further in the separating direction, the controlled swinging is allowed as in the embodiment of the present invention, and the other end of the auxiliary arm 77 is placed on the separated seedling. It is also possible to configure and implement such that it is automatically connected to the stage 22S side.
[Brief description of the drawings]
[Fig. 1] Whole side view of rice transplanter
[Fig. 2] Plan view of the seedling planting device
[Fig. 3] Front view of seedling planting device
FIG. 4 is a front view of the seedling planting device in the retracted state.
FIG. 5 is a schematic plan view of a seedling planting apparatus.
FIG. 6 is a schematic plan view of the seedling planting device in the retracted state.
[Fig. 7] Side view of seedling planting device
FIG. 8 is a side view of the seedling planting device in the retracted state.
Fig. 9 Side view of the upper part of the seedling planting device
FIG. 10 is a side view of the lower part of the seedling planting device.
FIG. 11 is a side view of the upper part of the seedling planting device in the retracted state.
FIG. 12 is a side view of the lower part of the seedling planting device in the retracted state.
FIG. 13 is a front view of the end position of the seedling mount.
FIG. 14 is a front view of the end position of the seedling stand in a separated state
FIG. 15 is a front view of the upper part of the end position of the seedling mount.
FIG. 16 is a front view of the lower part of the end position of the seedling mount.
FIG. 17 is a front view of the upper part of the end position of the seedling stand in a separated state
FIG. 18 is a front view of the lower part of the end position of the seedling stand in a separated state
FIG. 19 is a rear view of the lower part of the separated seedling platform.
FIG. 20 is a bottom view of the state where the separated seedling platform is set in the retracted position.
FIG. 21 is a side view of the drive system of the vertical feed mechanism.
FIG. 22 is a front view of the lower part of the divided part
FIG. 23 is a cross-sectional view showing a longitudinal feed shaft of a divided part
FIG. 24 is a plan view of the auxiliary arm.
FIG. 25 is a plan view showing the auxiliary arm in the retracted state.
FIG. 26 is a front view of the auxiliary arm.
FIG. 27 is a front view of the auxiliary arm in a moving state.
FIG. 28 is a cross-sectional view showing the lock structure of the auxiliary arm
FIG. 29 is a plan view showing a lock arm.
FIG. 30 is a perspective view showing a spring plate material.
FIG. 31 is a diagram showing a sliding rail connected state and a separated state.
FIG. 32 is a plan view of the protective frame.
FIG. 33 is a sectional view of a protective frame.
FIG. 34 is a block circuit diagram of a control system.
[Explanation of symbols]
22 Seedling stand
22B Seedling surface
22M Main seedling stand
22S seedling stand
77 Auxiliary arm
96 Support members
A seedling planting device
D Planting mechanism
F Horizontal feed mechanism
K connection means
P storage
W seedling

Claims (7)

Inclined posture seedling platform on which a plurality of seedling placement surfaces are formed, a plurality of planting mechanisms for cutting seedlings from the lower ends of the seedlings placed on the respective seedling placement surfaces and transplanting them to the field scene, and seedling placement A seedling planting device of a rice transplanter comprising a lateral feed mechanism for reciprocating a table in a horizontal direction,
The seedling stage is composed of a separated seedling stage at one end position of the seedling stage and a main seedling stage to which the separated seedling stage is connected, and a connection for connecting and separating these seedlings. And a storage portion for supporting the separated seedling platform separated by the decoupling of the coupling means is formed at the end position of the main seedling platform on the separated seedling platform side, and the main seedling platform and In a state where the separated seedling platform is connected to the separated seedling platform, the separated seedling platform is not connected to the frame supporting the seedling platform, and the separated seedling platform is completely separated from the main seedling platform. In addition, as the separated seedling stage is moved in the separating direction, the separated seedling stage is provided with an automatic linkage mechanism that automatically connects to the frame via an auxiliary arm, and the separated seedling stage is separated. Is connected to the frame via the auxiliary arm. By swinging around the frame-side coupling unit, the main seedling stand seedling surface configured seedling planting apparatus rice transplanters are as set in the storage unit to guide the upper.   The seedling planting of the rice transplanter according to claim 1, wherein the storage unit is provided with a support member that supports the separated seedling platform, and is configured to receive and support the weight of the separated seedling platform with respect to the support member. apparatus.   The auxiliary arm is configured to restrict a swinging posture in a state where the separated seedling support is guided to the storage unit, and is configured to receive and support the weight of the separated seedling support with the auxiliary arm in the swing restricting state. The seedling planting device of the rice transplanter according to claim 1. Wherein when the loaded separation seedling stage was set in the storage position, the separation seedling stand of claim width less than the full width is stored configuration of the storage unit so as to overlap the stand Shunae is set 1-3 The seedling planting apparatus of the rice transplanter of any one of these. The width | variety of the said isolation | separation seedling stand is set to 2, and the amount of duplication with the main seedling stand is set to about 1 in the storage part, The seedling planting apparatus of the rice transplanter of Claim 4 The separated seedling platform can be separated from the main seedling platform only when the seedling platform is set at the laterally moving end on the side where the separated seedling platform is formed or in the vicinity of the moving end. The seedling planting apparatus of the rice transplanter of any one of Claims 1-5 comprised as follows. The separated seedling platform is separated from the main seedling platform and moved to the storage section in a state where the seedling platform is set at the storage start position outside the lateral movement end on the side where the separated seedling platform is formed. The seedling planting apparatus of the rice transplanter of any one of Claims 1-5 comprised so that it can perform.

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