JP2011177050A - Seedling transplanting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily generate a space between a seedling receiver frame and a seedling mount by moving the seedling mount to the upper side, thereby improving maintainability. <P>SOLUTION: In a seedling transplanting machine provided with: the seedling receiver frame 81, which receives ends of seedlings; a seedling outlet provided in the seedling receiver frame 81; the seedling mount 80, which is moved to the left/right along the seedling receiver frame 81 by a coupling member 83, which moves to the left/right, so as to supply the seedlings to the seedling outlet; a seedling feeding belt, which transports the seedlings on the seedling mount 80 toward the seedling receiver frame 81 at the left/right moving end of the seedling mount 80; and a seedling planting device, which plants the seedlings supplied to the seedling outlet, a coupling shaft 168 of the seedling mount 80 side is inserted into the coupling groove 169 of the coupling member 83 so as to vertically movably couple the seedling mount 80 to provided a relay shaft 89, which transmits power to the seedling feeding belt, at the seedling mount 80, and to provided a hook 170 in the machine body side, and the hook 170 hooks the relay shaft 89, thereby maintaining the state in which the seedling mount 80 is moved to the upper side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  This invention belongs to the technical field of seedling transplanters.

  In a riding type rice transplanter that is an example of a seedling transplanter, a seedling receiving frame that receives an end portion of a seedling, a seedling outlet provided in the seedling receiving frame, and a connecting member that moves to the left and right to move left and right along the seedling receiving frame, A seedling stage that supplies the seedlings to the seedling outlet, a seedling feed belt that transfers the seedlings on the seedling stage to the seedling receiving frame side at the left and right end of the seedling stage, and seedlings that are supplied to the seedling outlet The structure which provided the seedling planting apparatus to plant is well-known (refer patent document 1).

  Further, in the riding type rice transplanter, the seedling stand having a downward slope is rotated upward around the upper support shaft, and the lower part of the seedling table is held by the stand in the rotated state, so that the seedling receiving frame and the seedling mounting are held. It is known that a space is created between the base and the seedling receiving frame and the seedling mounting base can be easily maintained through this space (see Patent Document 2).

JP 2006-314293 A Japanese Patent Laying-Open No. 2008-283941 (FIG. 6)

In order to rotate the seedling stage upward as in the background art described above, it is necessary to disconnect the connecting member that moves left and right or to attach a stand that holds the lower part of the seedling stage. Is annoying. In addition, when the seedling stand that is inclined downward is rotated around the upper support shaft, the lower end of the seedling stand moves rearward, so when the operator performs maintenance work from the rear side of the machine body, It may be difficult to work by placing a hand in the space between the seedling receiving frame and the seedling mounting stand due to the lower end of the arm.
The present invention aims to improve the maintainability by moving the seedling stage upward to easily create a space between the seedling receiving frame and the seedling stage.

  In order to solve the above problems, the following technical measures were taken.

  That is, the invention according to claim 1 is characterized in that the seedling receiving frame (81) that receives the end of the seedling, the seedling outlet (78) provided in the seedling receiving frame (81), and the connecting member (83) that moves left and right are used. A seedling stage (80) that moves left and right along the receiving frame (81) to supply seedlings to the seedling outlet (78), and a seedling stage (80) on the seedling stage (80) at the left and right end of the seedling stage (80) In a seedling transplanting machine provided with a seedling feeding belt (79) for transferring the seedling to the seedling receiving frame (81) side and a seedling planting device (37) for planting the seedling supplied to the seedling outlet (78) The connecting shaft (168) on the seedling mounting base (80) side is inserted into the connecting groove (169) of the connecting member (83) to connect the seedling mounting base (80) so as to be movable up and down, and the seedling feeding belt (79) A relay shaft (89) that transmits to the seedling stage (80) is provided on the seedling stand (80), and a hook (170) is provided on the machine body side. It has a structure with seedlings transplanter for holding in a moving state that has moved seedling mounting table (80) to the upper by applying a coupling shaft (89).

  Further, in the invention according to claim 2, the connection groove (169) includes a normal groove portion (169a) into which the connection shaft (168) is inserted in a normal state where the seedling mount (80) is in contact with the seedling receiving frame (81). The seedling transplanting machine according to claim 1, wherein the seedling transplanting machine (160) is in a state where the connecting shaft (168) is inserted in a moving state of the seedling placing stand (80) so as to cross and communicate with each other.

  In the invention according to claim 3, the seedling stage (80) is moved upward by the support member (122) that supports the upper part of the seedling stage (80) so as to be laterally movable and the seedling receiving frame (81). The seedling transplanter according to claim 1 or 2, which is movably supported.

  The invention according to claim 4 is provided with a stop interlocking device (172) for forcibly stopping the operation of the seedling planting device (37) in conjunction with the movement of the seedling placing stand (80) to the moving state. A seedling transplanter according to any one of claims 1 to 3 is provided.

According to the invention of claim 1, the operator moves the seedling table (80) upward while guiding the connecting shaft (168) on the seedling table (80) side in the connecting groove (169) of the connecting member (83). Since the seedling stage (80) can be held in the moved state by hanging the relay shaft (89) on the seedling stage (80) side on the hook (170) on the machine body side, the seedling receiving frame ( 81) and the seedling stage (80) can easily create a space, and the lower end of the seedling stage (80) can be prevented from moving too much backward, so that the seedling stage (80) in a moving state can be obtained. Is securely held by the hook (170) and the connecting groove (169) of the connecting member (83), and further, since there is no conventional stand, the maintenance work is facilitated and the safety of the maintenance work is also improved. improves.
According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, the seedling stage (80) is unexpectedly moved from the normal state in contact with the seedling receiving frame (81) by the vibration of the fuselage. It becomes difficult to shift, and it is possible to prevent the seedling mounting table (80) from being moved by the connecting groove (169) during the normal planting operation and the planting accuracy from being lowered. In addition, since the normal groove portion (169a) and the moving groove portion (169b) communicate with each other, the seedling stage (80) can be easily moved between the normal state and the moving state, and maintenance work can be facilitated. .
According to the invention according to claim 3, in addition to the effects of the invention according to claim 1 or 2, the support member (122) and the seedling receiving frame (81) do not become an obstacle in the movement of the seedling placing stand (80). The seedling stage (80) can be easily moved between the normal state and the moving state, and maintenance work can be facilitated.
According to the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the seedling planting device (37) is mistakenly moved in the moving state of the seedling mount (80). It does not operate and the safety of maintenance work is improved.

Side view of rice transplanter Top view of rice transplanter Plan view showing the main part of the traveling vehicle body An expanded plan view showing the seedling planting section in an easy-to-understand manner Cross-sectional side view showing the bottom of the seedling stand Cross-sectional side view showing the peripheral structure of the slider Cross-sectional side view of the lower part of the seedling stand showing a seedling lifting prevention tool with partial breakage Side view showing seedling presser and seedling lifting prevention tool Rear view showing seedling presser and seedling lifting prevention tool Enlarged side view showing the seedling lifting prevention device Diagram showing brake rod Side view showing the descent regulating device and the vibration suppressing device Diagram showing slide key Side view showing the moving state of the seedling stand Perspective view showing the mud collector Side view showing the mud collector

  One embodiment of the present invention will be described below.

  FIG.1 and FIG.2 shows the riding type rice transplanter (1) with a fertilizer, and this riding type rice transplanter (1) is a raising / lowering link apparatus (3 on the rear side of the traveling vehicle body (2). ) Through which the seedling planting part (4) is mounted so as to be movable up and down, and the main body part of the fertilizer application (5) is provided on the rear upper side of the traveling vehicle body (2).

  The traveling vehicle body (2) is a four-wheel drive vehicle provided with a pair of left and right front wheels (6) and rear wheels (7) as drive wheels, and a transmission case (8) is disposed at the front of the fuselage, A front wheel final case (9) is provided on the left and right sides of the transmission case (8), and the front wheels (9) are projected outwardly from the front wheel support portion (9a) capable of turning of the front wheel final case (9). 6) is attached. Further, the front end of the main frame (10) is fixed to the rear part of the transmission case (8), and the rear wheel rolling shaft (11) provided horizontally in the front and rear at the center of the rear end of the main frame (10). The rear wheel gear case (12) is supported in a freely rolling manner with the fulcrum as a fulcrum, and the rear wheel (7) is attached to the rear wheel axle that protrudes outward from the rear wheel gear case (12).

  The engine (13) serving as a prime mover is mounted on the main frame (10), and a transmission device in which the rotational power of the engine (13) can be switched between forward and reverse via the first belt transmission device (14), To the hydraulic continuously variable transmission (HST) (15). The output from the forward / reverse continuously variable transmission (HST) (15) is transmitted to the transmission case (8) via the second belt transmission (16). The rotational power transmitted to the transmission case (8) is branched and transmitted to the traveling transmission path and the planting transmission path at the transmission branching portion (8a) in the case (8). Separated into power and taken out. A part of the traveling power is transmitted to the front wheel final case (9) to drive the front wheel (6), and the rest is transmitted to the rear wheel gear case (12) to drive the rear wheel (7). Further, the external take-out power is transmitted to the planting clutch case (18) provided at the rear part of the traveling vehicle body (2) via the take-out transmission shaft (17), and then the seedling planting part is provided by the planting transmission shaft (19). While being transmitted to (4), it is transmitted to the fertilizer application device (5) by a fertilizer transmission mechanism (not shown). In the planting clutch case (18), a planting clutch for turning on and off transmission to the seedling planting part (4) and the fertilizer application (5) is provided.

  The fuel cock is opened and closed in conjunction with an engine switch (key switch) for starting and stopping the engine and turning on and off the engine. That is, when the engine switch is operated to the engine stop position, the fuel cock that opens and closes the fuel supply path to the fuel carburetor via the interlocking cable or the like is closed. This suppresses accumulation of dust and impurities mixed in the fuel in the carburetor. In particular, in the case of a walking type work machine (rice transplanter), the front and rear tilt posture of the machine body is likely to change, but the above configuration can prevent the fuel from overflowing in the carburetor.

  The upper part of the engine (13) is covered with an engine cover (20), and a seat (21) is installed thereon. In front of the seat (21) is a bonnet (22) incorporating various operation mechanisms, and a handle (23) for steering the front wheel (6) is provided above the bonnet (22). On the right side of the seat (21), there is provided a forward / reverse transmission lever (24) for operating the forward / reverse continuously variable transmission (HST) (15). In addition, a planting raising / lowering operation lever (25) capable of performing raising / lowering operation and turning on / off of the seedling planting part (4) is provided in the vicinity of the handle (23). In addition, it has the structure which operates a planting clutch and the raising / lowering hydraulic cylinder (76) mentioned later by this planting raising / lowering operation lever (25). The left and right sides of the lower end of the engine cover (20) and the bonnet (22) are horizontal floor steps (26). In addition, on the left and right sides of the front part of the traveling vehicle body (2), there are provided spare seedling platforms (27) on which supplementary seedlings are placed.

  A brake pedal (150) is provided on the right side in front of the seat (21). The brake pedal (150) is used to operate the brake device in the transmission case (8) to brake the front wheels (6) and the rear wheels (7). The operation linkage mechanism from the brake pedal (150) to the brake device includes a brake rod (151) whose rod length can be adjusted. One end of the brake rod (151) is slidable via a spring (compression spring) (152), and the other end is changed in rod length via a double nut (double nut structure) (153). It is configured to be possible. By changing the rod length, the play amount and stepping amount of the brake pedal (150) are adjusted. With the spring (152), the brake pedal (150) can be surely depressed until the braking force of the brake device becomes maximum. Specifically, the main rod portion (155) is passed through the hole of the plate (154a) of the end member (154) of the brake rod (151), and the washer (156) provided at the end portion of the main rod portion (155). ) And the plate (154a), a spring (compression spring) (152) is interposed between the end member (154) and the main rod portion (155). A protrusion (155a) is provided at an appropriate position of the main rod portion (155) on the other end side of the brake rod (151) with respect to the plate (154a), and the plate (154a) is released when the brake pedal (150) is released. Is configured to reliably return the brake device to a state where it is not braked by pressing the projection (155a). Since the rod length adjusting mechanism by the double nut (153) is provided on the other end side of the brake rod (151), the washer (1) on the one end side of the brake rod (151) regardless of the change of the rod length of the brake rod (151). 156) and the protrusion (155a) are constant, so that the brake device can be reliably returned to the non-braking state when the brake pedal (150) is returned, and the brake can be reliably prevented from being dragged. Conventionally, it was configured to change the rod length of the brake rod by changing the position of the washer with respect to the main rod portion on one end side of the brake rod, so the distance between the washer and the protrusion changes by changing the rod length, If this interval is increased, the brake pedal may not be returned to the non-braking state without pressing the projection when the brake pedal is released, and the brake may be pulled.

  The lift link device (3) includes one upper link (70) and a pair of left and right lower links (71). These links (70, 71) are pivotally attached to a rear base portal link base frame (72) whose base side is erected on the rear end of the main frame (10), and a vertical link on the tip side thereof. (73) are linked. And the connection shaft (74) rotatably supported by the seedling planting part (4) is inserted and connected to the lower end part of the vertical link (73), and the seedling planting part (4) is centered on the connection shaft (74). Are connected to the left and right to roll freely. A lifting hydraulic cylinder (76) is provided between the support member fixed to the main frame (10) and the tip of the swing arm (75) formed integrally with the upper link (70). By expanding and contracting with hydraulic pressure, the upper link (70) rotates up and down, and the seedling planting part (4) moves up and down while maintaining a substantially constant posture. In addition, a swing spring is interposed between the lifting hydraulic cylinder (76) and the swing arm (75), and this swing spring attenuates vibration caused by lifting and lowering of the seedling planting part (4) during normal planting, Hunting in raising and lowering the seedling planting part (4) is prevented.

  Moreover, the descent | fall control apparatus (157) which regulates a fall by the height which a seedling planting part (4) floats to the ground is provided. The lowering restricting device (157) is provided with a restricting rod (158) that comes into contact with the lower link (71) from below so as to be movable up and down via a restricting spring (159) on the link base frame (72). Even if the lower link (71) rotates downward as the seedling planting part (4) is lowered, the regulation rod (158) moves down against the regulation spring (159), and the seedling planting part ( 4) Descent is not regulated. When the lowering restricting lever (160) is operated to the restricting position, the restricting portion (160a) of the lowering restricting lever (160) protrudes to the lower movement region of the restricting rod (158), and the lower link (71) is rotated downward. When the regulation rod (158) is moved down by the movement, the lower end of the regulation rod (158) is regulated by coming into contact with the regulation part (160a) to regulate the lowering of the seedling planting part (4). Thereby, since the seedling planting part (4) has a height that rises to the ground, the center of gravity of the aircraft can be lowered when traveling on a slope or the like, and the aircraft can be prevented from falling. In the state where the lowering restriction lever (160) is operated to the non-restricting position at the time of normal planting or the like, the lowering speed is controlled by the restriction spring (159) immediately before the seedling planting part (4) is brought into contact with the ground. It is suppressed and becomes a decera mechanism.

Moreover, the vibration suppression apparatus (161) which suppresses that a seedling planting part (4) vibrates in the lowered state is provided. The vibration suppressing device (161) includes a vibration suppressing lever (162) provided on the link base frame (72) and an upper link (70) with a vibration suppressing rod (164) via a vibration suppressing spring (163). When the vibration suppression lever (162) is operated to the vibration suppression position, the upper link (70) is pulled obliquely downward and forward by the vibration suppression rod (164) and the vibration suppression spring (163). It has become. As a result, even when the seedling planting part (4) is in contact with the loading platform or the like during transportation on a truck or the like, vibration due to transportation is amplified by the swing spring and the seedling planting part (4) is prevented from vibrating. It is possible to prevent the seedling planting part (4) from being damaged. Of course, when transporting with the seedling planting part (4) raised due to conditions such as the position of the lift of the truck bed, vibration due to transportation is more likely to be amplified, but seedling planting by the vibration suppression device (161) Vibration can also be suppressed when transporting the part (4) in a raised state.
Further, when it is detected by the left / right inclination sensor that the seedling planting part (4) has been largely rolled left and right around the connecting shaft (74), the engine speed is reduced by DFI electronic fuel injection control to reduce the traveling speed. It is configured. Thereby, it can suppress that planting is disturbed as much as possible when the traveling vehicle body (2) is greatly inclined to the left and right. As a means for reducing the traveling speed, a means for reducing the engine speed by the engine throttle, a means for controlling the operation of the transmission to the low speed side, etc. can be adopted in addition to a reduction in the engine speed by the electronic fuel injection control. In addition, as a left-right inclination sensor, a sensor that detects an angle difference between the traveling vehicle body (2) and the seedling planting part (4), a sensor that detects an inclination angle of the seedling planting part (4) with respect to the absolute horizontal, A limit switch type sensor or the like that detects that the seedling planting part (4) has rolled to the maximum within the left and right rolling range can be employed.

  The seedling planting part (4) has an eight-row planting structure, a transmission case (77) that also serves as a frame, and a mat seedling is moved back and forth to supply the seedlings to the seedling outlet (78) for each line. When all the seedlings for one horizontal row are supplied to the seedling outlet (78), the seedling stage (80) for transferring the seedlings downward by the seedling feeding belt (79), and the seedling supplied to the seedling outlet (78) A seedling planting device (37) and the like for planting in a field with a seedling planting tool (37a) are provided.

  The seedling mounting table (80) is supported on the back side of the seedling mounting surface so as to be movable in the left-right direction along a horizontal frame (81) serving as a seedling receiving frame provided in a left-right direction at a lower portion on the back surface side. The seedling stage (80) includes a plurality of partition wall portions (80a) extending vertically, and is divided by the partition wall portion (80a) to constitute a seedling placement portion (80b) for each strip. , 8 seedlings can be mounted. The horizontal frame (81) is provided with eight seedling outlets (78). A laterally moving rod (82) that protrudes from both the left and right sides of the transmission case (77) and moves back and forth in the lateral direction by the power in the transmission case (77) is provided, and is fixed to both ends of the laterally moving rod (82). The connecting member (83) and the seedling mounting table (80) are connected to each other, and the horizontal movement rod (82) reciprocates left and right so that the seedling mounting table (80) reciprocates left and right. In the transmission case (77), a lead cam and the lead cam shaft screwed to the lead cam are provided. Accordingly, the laterally moving rod (82) has an intermediate portion fixed to the lead cam in the transmission case (77), and is configured to reciprocate left and right by the drive rotation of the lead cam shaft. The horizontal frame (81) serves as a support member that supports the lower part of the seedling stage (80) so as to be movable left and right, and is above the seedling stage (80) (strictly along the inclination of the seedling stage (80). The seedling stage (80) is supported so as to be freely movable upward (in a diagonally upward direction along the inclination of the seedling stage (80)) without restricting movement in the diagonally forward direction. ing.

  A lateral movement switching device is provided in the transmission case (77) to switch the rotation speed of the lead cam shaft to a plurality of stages. This lateral movement switching device includes a plurality of pairs of transmission gears having different transmission ratios, selects a transmission gear (166) that is transmitted by a slide key (165), and changes the left-right movement speed of the seedling platform (80). It is. Since the slide key (165) is cantilevered from the shifter, it is easy to bend to the opposite side of the key groove (166a) of the transmission gear (166) by the switching resistance at the time of the slide switching operation. In addition, the angle of inclination of the inclined surface (165b) on the opposite side is larger than that of the inclined surface (165a) on the shifter side, so that the switching can be smoothly performed in any switching direction in the reciprocating stroke of the slide switching. .

  Although the above-described connecting member (83) is configured to move to the left and right via the lateral movement rod (82), the lead cam shaft and the lead cam are arranged so as to be exposed to the outside of the transmission case (77), and the connecting member ( 83) may be integrated with the lead cam. In this case, one connecting member (83) may be provided.

  The connection structure between the connecting member (83) and the seedling stage (80) will be described in detail. A connecting shaft (168) is integrally fixed to the seedling stage (80) via a support arm (167). Are provided on the left and right. The connecting shaft (168) is constituted by a bolt, extends from the support arm (167) to the left or right side, and the tip is a head having a large diameter. On the other hand, the connecting member (83) is provided with a connecting groove (169) formed of a long hole. The connecting groove (169) is bent in an L shape, and the connecting shaft (168) is inserted in a normal state in which the seedling mount (80) is in contact with the seedling receiving frame (81) with the bent portion as a boundary. A groove portion (169a) and a moving groove portion (169b) into which the connecting shaft (168) is inserted when the seedling stage (80) is moved are provided. Accordingly, the normal groove portion (169a) and the moving groove portion (169b) are communicated with each other by intersecting (orthogonal). The normal groove portion (169a) extends in the up-down direction with a slight downward inclination when viewed from the side of the body. The moving groove portion (169b) extends in the forward rising inclination direction close to the front / rear inclination direction of the seedling stage (80). In addition, the moving groove part (169b) is slightly inclined to the front side so as to be located on the front side as compared to the front / rear inclination of the seedling stage (80) (to move away from the seedling stage (80) as it goes upward). Facing the direction. The connecting shaft (168) passes through the connecting groove (169), and the support arm (167) and the head of the connecting shaft are positioned with almost no gap on the left and right of the connecting groove (169). Therefore, when the connecting member (83) moves left and right, the connecting shaft (168) and thus the seedling table (80) also move left and right in synchronization.

  Left and right moving guide members (120, 121) that are long in the left-right direction are fixedly provided on the upper and lower sides of the back side of the seedling mount (80). The upper left / right moving guide member (120) is formed in a cross-sectional shape with the lower side cut out in a side view, and is engaged with a rotatable support roller (122) supported from the lower side. A plurality of (four) support rollers (122) are provided at appropriate positions (four locations) along the upper left and right moving guide member (120), and are fixed on the upper side of the transmission case (77). It is attached to the upper part of the base support frame (123). The lower left-right moving guide member (121) includes a cut-out cross-sectional shape portion (121a) with the lower side cut out in a side view and a rectangular cross-section shape portion (121b) immediately above the cut-out cross-section portion. A slider (124) is fixed to the shape portion (121a). The slider (124) has a structure in which a protrusion (124a) provided on the upper portion is inserted into an attachment hole provided in the lower left / right moving guide member (121) and fixed. A plurality (four pieces) are provided at appropriate positions (four places) along the guide member (121), and are engaged with a rail portion (81a) provided on the upper portion of the horizontal frame (81) from above. Therefore, the seedling stage (80) is supported by the support roller (122) and the horizontal frame (81) so as to be movable in the left-right direction. The support roller (122) and the slider (124) are sliding members made of polyethylene resin (ultra high molecular weight polyethylene). Accordingly, the support roller (122) is a support member that supports the upper part of the seedling stage (80) so as to be movable in the left-right direction, and is above the seedling stage (80) (strictly, along the inclination of the seedling stage (80)). The seedling stage (80) is supported so as to be freely movable upward (in a diagonally upward direction along the inclination of the seedling stage (80)) without restricting movement in the diagonally forward direction. ing.

  The seedling feeding belt (79) is stretched between a driving roller (84) and a driven roller (85). The drive roller (84) is provided so as to rotate integrally with the seedling feed drive shaft (86) in the left-right direction. The seedling feed drive shaft (86) is configured to transmit the rotation only in the direction in which the seedling feed belt (79) feeds the seedling by the ratchet mechanism (87).

  The drive mechanism of the seedling feeding belt (79) has the following configuration. That is, the drive side arm (88) which protrudes from both right and left sides of the transmission case (77) and is driven to rotate is provided. Moreover, the relay shaft (89) of the left-right direction is provided above the seedling feed drive shaft (86), and a driven arm (90) is attached thereto. The relay shaft (89) and the seedling feed drive shaft (86) are connected in transmission by a link mechanism (94) including arms (91, 92) and a link (93).

  When the seedling stage (80) reaches the end of the left-right movement stroke, the driving side arm (88) comes into contact with the driven side arm (90) from the lower side to rotate the relay shaft (89) by a predetermined angle. The rotation is transmitted to the seedling feed drive shaft (86) via the link mechanism (94) and the ratchet mechanism (87). Thereby, the seedling feeding belt (79) is operated by a predetermined amount. Note that the two driven arms (90) on the left and right sides are the same as the single driving arm (88) so that the seedling mount (80) can transmit the seedling feeding power at the left and right moving ends. It is provided on the relay shaft (89). When the drive side arm (88) is separated from the driven side arm (90), the relay shaft (89) and the driven side arm (90) are moved by the tension of the spring (96) locked to the swing fulcrum shaft (95) described later. Return to the position before driving. The relay shaft (89) and the driven arm (90) are regulated by the tension of the spring (96) so that the stopper (97) provided at the end of the relay shaft (89) is regulated on the seedling stage (80) main body side. It is configured to return to a position where it abuts on the member (98).

  By the way, the seedling feed drive shaft (86) is divided into a left four-line portion and a right four-line portion. The relay shaft (89) is also divided into a left relay shaft and a right relay shaft. Corresponding to the left and right seedling feed drive shaft (86) and the relay shaft (89), a drive side arm (88), a link mechanism (94), and two left and right driven arms (90) are also provided on the left and right, respectively. It is the composition which was made.

  The driven arm (90) has a base part (90a) near the center of rotation and a rotating tip side part (90b) with which the driving arm (88) abuts, and both parts (90a, 90b). ) Are connected by a left and right swing fulcrum shaft (95) provided in the middle of the arm (90). The base portion (90a) is configured to rotate integrally with the relay shaft (89), and the rotating tip side portion (90b) is a torque spring (not shown) provided on the swing fulcrum shaft (95). To the upper side (the side opposite to the side in contact with the transmission to the seedling feeding belt (79)), and in the normal state, it is further rotated upward. So as not to contact the relay shaft (89). Therefore, at the time of normal seedling feed transmission in which the driving side arm (88) contacts the driven side arm (90) from below, the base portion (90a) and the rotating tip side portion (90b) of the driven side arm (90). Integrally rotate around the relay shaft (89). On the other hand, when the drive side arm (88) rotates in reverse and comes into contact with the driven side arm (90) from the upper side, only the rotation tip side portion (90b) is lower (seedling feed) with respect to the base portion (90a). It swings against the torque spring toward the abutting side in transmission to the belt (79).

On the upper side of the seedling mounting surface (80c) of the seedling mounting base (80), there is provided a seedling presser (130) that hits the upper surface of the mat seedling floor and presses the mat seedling to the seedling mounting surface (80c) side. Yes. The seedling presser (130) presses the mat seedling appropriately to the seedling feeding belt (79) side so that the mat seedling can be reliably and accurately transferred by the seedling feeding belt (79). The seedling retainer (130) is configured by combining only metal bars, and the portion that contacts the mat seedling is configured by contact portions (131, 132) that extend along the seedling mount (80). Three contact portions (131, 132) are provided for each seedling placement portion (80b) of each strip, and one central contact portion (short central length) located at the left and right center of the seedling placement portion (80b) ( 131) and two long side contact portions (132) located on the left and right side portions of the seedling mounting portion (80b). As for these contact parts (131,132), both ends of the front end part (131a, 132a) and the rear end part (131b, 132b) are on the upper side (the side opposite to the seedling mounting surface (80c) of the seedling mounting base (80)). Is bent. The front end portions (131a, 132a) and the rear end portions (131b, 132b) are axes. The upper ends of the bent rear end portion (132b) of the center contact portion (131) and the side contact portion (132) are fixed to the rear side portion (133), which is an axis extending in the left-right direction, by welding, The upper end of the bent front end portion (132a) of the contact portion (132) is fixed to the front side portion (134) extending in the left-right direction by welding, and the side contact portion (132) includes the front side portion (134) and the rear side portion ( 133) is supported at both ends, and the central contact portion (131) is cantilevered at the rear side portion (133). One front side part (134) and one rear side part (133) are provided for every two seedling placement parts (80b), and the contact parts (131, 132 in the two seedling placement parts (80b)). ) Are supported by the common front side part (134) and rear side part (133).
The seedling support frame (123) includes left and right frame parts (123a) extending left and right at substantially the center position in the vertical direction. The left and right frames (123a) are round shafts with a circular cross section. At right and left proper positions of the left and right frames (123a), suspension members (171) having hooks (170) at their lower ends are attached to the left and right frames (123a) so as to be rotatable left and right.

  Accordingly, in the normal planting operation state (normal state) of the seedling stage (80), the lower end of the normal groove portion (169a) of the connection groove (169) of the connection member (83) is caused by the weight of the seedling stage (80). The connecting shaft (168) is located at the portion (front lower end). In moving the seedling stage (80) to the upper side movement state, the operator moves the seedling stage (80) to the upper side (back diagonally upper side) while guiding the connecting shaft (168) to the normal groove part (169a). Then, the seedling stage (80) is moved obliquely upward in the forward direction while guiding the connecting shaft (168) to the moving groove (169b) of the connecting groove (169) through the bent portion of the connecting groove (169). Then, with the connecting shaft (168) positioned at the front end (upper end) of the moving groove (169b), the relay shaft (89) of the seedling transmission mechanism is hung on the hook (170) of the suspension member (171). Thus, the seedling stage (80) is held in a moved state in which it is moved upward. In this moving state, the seedling stage (80) is moved upward from the normal state along the front / rear tilt direction of the seedling stage (80). It will be almost the same. The left and right suspension members (171) are disposed at the left and right positions where the relay shaft (89) is located. Moreover, since the suspension member (171) is rotatable about the axis of the left and right frames (123a), the work of hanging the relay shaft (89) on the hook (170) can be easily performed. The hanging member (171) may be configured not to rotate with respect to the left and right frames (123a).

  A stop interlocking wire (172) serving as a stop interlocking device is connected between the left and right (right) hooks (170) and the planting lifting operation lever (25). Therefore, by hanging the relay shaft (89) on the hook (170) while the seedling stage (80) is moved, the stop interlocking wire (172) is pulled by the relay shaft (89), and the planting lifting operation lever (25) is forcibly operated from a planting position where the seedling planting part (4) is operated to a non-planting position where the seedling planting part (4) is not operated.

  A rear column (135) is fixedly provided on the partition wall (80a) of the seedling stand (80) so as to rise from the partition wall (80a), and the rear column (135) is front and rear. A mounting hole having a circular cross section facing the direction is provided. A plurality of the mounting holes are provided in the vertical direction of the rear column (135). Similarly, a front column (136) is fixedly provided on the partition wall (80a) of the seedling stage (80) so as to rise from the partition wall (80a), and an upper end of the front column (136). The part is provided with a semicircular cutout part (136a) cut out from the front side. On the other hand, fixing portions (133a) bent rearward are provided at the left and right ends of the rear side portion (133), and the fixing portions (133a) are inserted into the mounting holes. Further, both left and right end portions of the front side portion (134) are inserted into the cutout portion (136a). Accordingly, the front side portion (134) is supported by the left and right front support columns (136), the rear side portion (133) is supported by the left and right rear support columns (135), and the entire seedling holder (130) is mounted on the seedling. It is the structure supported by the stand (80).

  And the seedling presser (130) can be rotated up and down around the front side part (134) by removing the fixing part (133a) from the mounting hole. By turning the seedling holding tool (130), the seedling remaining between the seedling holding tool (130) and the seedling placing surface (80c) of the seedling placing stand (80) at the end of the planting operation, etc. The presser (130) can be easily taken out without getting in the way. Moreover, the position or angle of the contact part (131, 132) with respect to the seedling mounting surface (80c) is changed by rotating the seedling holding tool (130) and inserting the fixing part (133a) into another mounting hole. It is possible to adjust the position or angle of the seedling presser (130) according to the difference in the thickness or strength of the mat seedling floor so that the seedling feeding resistance of the seedling feeding belt (79) does not become excessive. The seedling can be appropriately pressed to the seedling feeding belt (79) side. Furthermore, the seedling presser (130) can be removed from the seedling mount (80) by removing the fixing part (133a) from the mounting hole and removing the front side part (134) from the notch part (136a). The seedling holder (130) does not interfere with the maintenance of the seedling stage (80) and the seedling planting part (4) as well as the seedling remaining on the seedling stage (80) can be easily taken out. Easy to do. In addition, when extracting the fixing | fixed part (133a) from an attachment hole, it pulls out, bending a seedling holder (130) (mainly rear side part (133)).

  At both left and right end portions of the rear side portion (133), seedling receiving attachment attaching portions (137) extending upward are fixedly provided by welding. The seedling holder (138) can be hooked and attached to the seedling holder attachment portion (137). The seedling catcher (138) is provided for each seedling placement part (80b) of each strip, and catches the seedlings on the seedling placement part (80b) so as not to move to the seedling removal outlet (78) side by its own weight. Is. With this seedling catcher (138), it is possible to ensure that the seedling is not supplied to the seedling outlet (78) regardless of the operation of the seedling feeding belt (79). Planting of seedlings can be performed partially only with other planting strips.

  At the part where the upper end of the rear end part (131b, 132b) of each contact part (131, 132) and the rear side part (133) intersect, the seedling on the seedling mounting base (80) is the seedling mounting surface (80c). ) Or the horizontal frame (81), and a seedling lifting prevention tool (139) is attached to prevent the seedling mounting base (80) from shifting to the left and right due to the horizontal movement. This seedling lifting prevention tool (139) is made of synthetic resin, and has an upper notch groove (140) in which the rear side part (133) of the seedling presser (130) is fitted at the upper part, and the seedling facing upward and downward on the side surface. A side notch groove (141) into which the rear end portion (131b, 132b) of the contact portion (131, 132) of the presser (130) fits is provided, and the lower portion hits the upper surface of the mat seedling floor to press the seedling. A lifting prevention action part (142) is provided. The seedling lifting prevention tool (139) can be attached to and detached from the seedling holder (130) by the upper notch groove (140) and the side notch groove (141). The upper cutout groove (140) has a structure cut out from the upper side of the seedling floating prevention tool (139), and has a circular section (140a) serving as a fitting portion into which the rear side portion (133) is fitted. A plurality (two) are arranged in the vertical direction. The side cut-out groove (141) has a structure cut out from the left side of the fuselage, and a semicircular cross-section portion into which the rear end portion (131b, 132b) of the contact portion (131, 132) fits. It has a structure that penetrates in the vertical direction. At appropriate positions above and below the side cutout groove (141), a protruding portion that protrudes toward the groove (141) so that the seedling lifting prevention tool (139) is unlikely to come off from the seedling presser (130) ( 141a). The lifting prevention action part (142) is disposed at the same lateral position as the contact part (131, 132) of the seedling holder (130) and on the rear side of the contact part (131, 132). The top surface of the seedling floor portion comes into contact with the lower side portion (142b). The lower side portion (142b) is located on the seedling mounting surface (80c) side of the contact surface portion of the contact portion (131, 132) of the seedling holding tool (130), and the seedling feeding lower side of the seedling mounting table (80) ( It is comprised diagonally with respect to the seedling mounting surface (80c) so that it may approach a seedling mounting surface (80c), so that it goes to a lower side, a rear side, or the seedling taking-out exit (78) side. The apex part (142a) is arranged at a position facing the rear end of the seedling mounting surface (80c) of the seedling mounting base (80). Moreover, the width | variety of the left-right direction of the lifting prevention effect | action part (142) is narrower than the width | variety of the left-right direction of the contact part (131,132) of a seedling holder (130).

  At the bottom of the seedling planting part (4), there are a center float (100) for leveling the seedling planting positions for the central two strips, and a side float (101) for leveling the seedling planting positions for the two outermost left and right sides A mid float (102) is provided between the center float (100) and the side float (101) for leveling the position of the remaining one seedling. When the aircraft is advanced with these floats (100, 101, 102) in contact with the mud surface of the field, the floats (100, 101, 102) slide while leveling the mud surface, and seedlings are planted on the leveling marks. A seedling is planted by the attaching device (37). Each float (100, 101, 102) is pivotally attached so that the front end side moves up and down according to the unevenness of the soil surface of the field, and the front float of the center float (100) moves up and down during planting work. By switching a hydraulic valve (not shown) that is detected by the vertical movement detection mechanism (103) and controls the lifting hydraulic cylinder (76) according to the detection result, the seedling planting part (4) is moved up and down, thereby The planting depth is always kept constant. In addition, each float (100, 101, 102) is floating with respect to the soil surface by the detection of the vertical motion detection mechanism (103) (the front and back inclined posture of the float (100, 101, 102) tends to be lowered downward). Is determined), the engine speed is reduced by electronic fuel injection control by DFI to reduce the traveling speed. Thereby, it can suppress as much as possible that a seedling planting part (4) floats with respect to a soil surface, and planting is disturbed. As a means for reducing the traveling speed, a means for reducing the engine speed by the engine throttle, a means for controlling the operation of the transmission to the low speed side, etc. can be adopted in addition to a reduction in the engine speed by the electronic fuel injection control. In addition, as means for determining that each float (100, 101, 102) is floating with respect to the soil surface, in addition to those based on the detection of the vertical movement detection mechanism (103) of the center float (100), left and right It may be based on the detection of a special sensor that detects the vertical movement of the side float (101). The sensor may be a limit switch type sensor.

  The fertilizer application device (5) uses the fertilizer (powder granule) stored in the fertilizer storage tank (powder storage tank) (110) to be constant by the fertilizer feed part (powder feed part) (63) of each strip. The fertilizer is fed out to the fertilizer guide (112) attached to the float (100, 101, 102) with a fertilizer transfer hose (powder transfer hose) (111) and provided on the front side of the fertilizer guide (112). It discharges in the fertilization groove formed near the side part of the seedling planting strip by the groove body (113). The pressure air generated by the blower (115) driven by the electric motor (114) is blown into the fertilizer transfer hose (111) via the air chamber (116) which is long in the left-right direction, and the fertilizer transfer hose (111) The fertilizer is forcibly transferred to the fertilizer discharge port (fertilization guide (112)) on the seedling planting part (4) side. The fertilizer supplied in the fertilizer groove is covered with a cover plate (117) attached to the float (100, 101, 102) behind the fertilizer guide (112) and the groove body (113).

  Since it is desirable that the fertilizer application guide (112) and the grooved body (113) of each strip are made uniform in the positional relationship (distance) with the corresponding seedling planting device (37) and the fertilization effect of each strip is made uniform. These are arranged at the same position in the front-rear direction (the same position in a side view of the body). Similarly, it is desirable that the distances between the covering plates (117) of the respective strips are made uniform with respect to the corresponding fertilization guide (112), the groove body (113), and the seedling planting device (37). This is because if the cover plate is positioned too close to the fertilizer guide, mud pushed by the cover plate may be supplied into the fertilizer guide and the fertilizer guide may be clogged. If it is positioned too far from the fertilizer application guide, the fertilizer will rise slightly from the bottom of the fertilizer ditch due to water in the field before covering with the cover plate, resulting in less soil cover and appropriate fertilization effect. It is because there is a risk of disappearing.

  The power transmitted to the fertilizer application device (5) by the fertilizer transmission mechanism is transmitted to the fertilizer drive shaft extending in the left-right direction, and the fertilizer feed section (63) of each strip from the fertilizer drive shaft via the feed gear for each strip. Is transmitted to. In the above description, the configuration in which the blower (115) is driven by the electric motor (114) has been described. However, if the configuration is such that the blower (115) is driven from the fertilization drive shaft via the blower transmission mechanism, the electric motor (114) is driven. This eliminates the need for cost reduction, and can also reduce failure of the electrical system by not using the electric motor (114). At this time, if the blower (115) is arranged in the air chamber (116) with the drive shaft facing in the left-right direction, it can be transmitted from the fertilizer drive shaft to the blower (115) by, for example, a pulley and a transmission belt. The structure of the blower transmission mechanism can be simplified. More preferably, if the air champ (116) is divided into left and right, and the left and right blowers (115) are arranged at the ends of the left and right air champs, which are the division positions, fertilizer is applied for transmission to the blower (115). There is no need to extend the drive shaft, and even if the blower (115) is small in size and low in capacity to be provided in the air chamber (116), the air chamber (116) is divided into left and right blowers (115). ) Is provided, a desired wind pressure can be obtained. In addition, the cost can be reduced by adopting a configuration in which transmission is made to the left and right blowers (115) by a common transmission belt (blower transmission mechanism). In particular, in the case of a four-row rice transplanter, if the air champ (116) is divided into two strips to the left and right, the small wind blower (115) in the air champ (116) can provide sufficient wind pressure for each two strips. Can get to.

Although the above-mentioned fertilizer (5) is the composition which applies a granular fertilizer, it can also be set as the composition which applies a paste-like fertilizer as a fertilizer. At this time, the fertilizer feeding unit serves as a pump for feeding the paste-like fertilizer. The paste-like fertilizer is stored in the fertilizer storage tank, but a stirring device that stirs the paste-like fertilizer and increases the fluidity in order to feed it well by a pump is provided in the fertilizer storage tank. The stirrer is configured to rotate by a drive motor, and when the drive resistance is large based on detection of the drive resistance of the drive motor, the drive motor repeats forward rotation and reverse rotation alternately, such as fertilizer type and temperature change Good fluidity can be obtained even when the paste fertilizer is highly viscous due to environmental changes. When the drive resistance is small based on the detection of the drive resistance of the drive motor, the rotational speed of the drive motor is reduced to reduce power consumption. Further, when the drive resistance is extremely small based on the detection of the drive resistance of the drive motor, it is determined that the amount of paste-like fertilizer stored in the fertilizer storage tank has decreased, and an alarm for prompting fertilizer supply is issued. This eliminates the need for a special fertilizer reduction sensor and can reduce costs.
As described above, this riding type rice transplanter (1) includes a seedling receiving frame (81) for receiving an end of the seedling, a seedling outlet (78) provided in the seedling receiving frame (81), and a connecting member (83 that moves left and right). ) To move left and right along the seedling receiving frame (81) to supply seedlings to the seedling outlet (78), and the seedling mounting platform at the left and right end of the seedling mounting platform (80). (80) A seedling feeding belt (79) for transferring the upper seedling to the seedling receiving frame (81) side and a seedling planting device (37) for planting the seedling supplied to the seedling outlet (78) are provided. In the seedling transplanter, the connection shaft (168) on the seedling mounting base (80) side is inserted into the connecting groove (169) of the connecting member (83) to connect the seedling mounting base (80) so as to be movable up and down, and the seedling feeding A relay shaft (89) for transmission to the belt (79) is provided on the seedling stage (80), a hook (170) is provided on the machine body side, and the hook (17 ) To and held by a moving state having moved seedling mounting table (80) to the upper by multiplying relay shaft (89).
Therefore, the operator moves the seedling stage (80) upward while guiding the connecting shaft (168) on the seedling stage (80) side in the connecting groove (169) of the connecting member (83), and By hanging the relay shaft (89) on the seedling stage (80) side on the hook (170), the seedling stage (80) can be held in the moved state, so that the seedling receiving frame (81) and the seedling stage ( 80), and in the moving state, the seedling stage (80) is moved from the normal state to the front and back of the seedling stage (80) at substantially the same front and rear inclination angle as the normal state. Since the lower end of the seedling stage (80) is close to the front and rear position of the seedling receiving frame (81) and the lower end of the seedling stage (80) does not move backward, the seedling stage (80) is moved to the upper side along the inclination direction. Put the hand in the space between the seedling receiving frame (81) and the seedling mounting table (80) because the lower end of the mounting table (80) is obstructive. Since the moving seedling stand (80) is securely held by the hook (170) and the connecting groove (169) of the connecting member (83), and there is no conventional stand, A transmission case (77), a seedling feeding belt (79), a transmission mechanism to the seedling feeding belt (79), a mechanism for moving the seedling mounting base (80) to the left and right, and a seedling receiving frame (81) are moved up and down to plant seedlings. Maintenance work of the member located on the front side of the seedling mounting base (80) such as a mechanism for adjusting the scraping amount of the seedling by the attaching device (37) can be facilitated, and safety of the maintenance work is also improved.
The connecting groove (169) includes a normal groove (169a) into which the connecting shaft (168) is inserted in a normal state where the seedling stage (80) is in contact with the seedling receiving frame (81), and the movement of the seedling stage (80). In this state, the movable groove portion (169b) into which the connecting shaft (168) is inserted is crossed and communicated.
Therefore, it becomes difficult for the seedling stage (80) to shift from the normal state in contact with the seedling receiving frame (81) to a moving state unexpectedly due to vibrations of the airframe, etc., and the seedling stage (80) is connected to the connecting groove during normal planting work. It can prevent that it moves by (169) and planting accuracy falls. In addition, since the normal groove portion (169a) and the moving groove portion (169b) communicate with each other, the seedling stage (80) can be easily moved between the normal state and the moving state, and maintenance work can be facilitated. .

  In addition, the seedling stage (80) is supported by the support member (122) that supports the upper part of the seedling stage (80) so as to be movable in the left-right direction and the seedling receiving frame (81) so as to be movable upward. The support member (122) and the seedling receiving frame (81) do not become an obstacle in the movement of the seedling stage (80), and the seedling stage (80) can be easily moved between the normal state and the moving state, and maintenance is performed. Work can be facilitated.

  In addition, a stop interlocking device (stop interlocking wire) (172) for forcibly stopping the operation of the seedling planting device (37) is provided in conjunction with the movement of the seedling mount (80) to the moving state. Therefore, the seedling planting unit (4) including the seedling planting device (37) and the seedling mounting table (80) is not erroneously operated in the moving state of the seedling mounting table (80), and the seedling mounting table is moved in the moving state. (80) can be prevented from moving left and right and being damaged, and the operator performing maintenance can be prevented from being injured, thereby improving the safety of the maintenance work.

  In addition, in order to facilitate the seedling supply operation to the seedling mounting table (80), a supplementary seedling mounting table (173) may be provided above the fertilizer storage tank (110) immediately before the seedling mounting table (80). it can. This replenishment seedling stage (173) is configured to mount eight seedlings on the left and right according to the number of planting strips, and the front rotation shaft (175) is rotated by the operation of the tilting cylinder (174). The seedling is replenished to the seedling mount (80) by tilting backward and downward by the rotation of. At the time of the seedling replenishment, the seedling placing stand (80) is moved to the left and right central positions so as to be aligned with the left and right positions of the supplementing seedling placing stand (173). A replenishment fertilizer tank (176) that rotates integrally with the replenishment seedling placement stand (173) is provided below the replenishment seedling placement stand (173). A fertilizer discharge port (177) is provided below the rear portion of the replenishment fertilizer tank (176), and an open / close lid (177a) for opening and closing the fertilizer discharge port (177) is provided. Therefore, with the lid (110a) of the fertilizer storage tank (110) opened, the opening / closing lid (177a) of the supplementary fertilizer tank (176) is opened, and the supplementary seedling stage (173) and supplemental fertilizer tank (176) are opened. ) In a rear-down position, the seedling supply to the seedling stage (80) and the fertilizer supply to the fertilizer storage tank (110) can be performed simultaneously, and the replenishment work can be performed efficiently, as well as seedling supply and fertilizer. Since the replenishment is performed by the common tilting cylinder (174), the structure can be simplified.

  In addition, mud adhering to the front wheel (6) and the rear wheel (7) may fall on the road and stain the road surface when traveling on the road after rice transplanting work with the rice transplanter (1). It is cumbersome and troublesome to clean the dirty road surface later. Therefore, in the riding type rice transplanter (1), the lifting link device (3) can be removed from the traveling vehicle body (2) together with the seedling planting part (4), and a mud collecting device (178) for collecting mud on the road surface can be installed instead It is configured. The mud collecting device (178) includes a mud collecting frame (180) having a scooping part (179) in contact with the road surface at the front end, left and right idle wheels (181) provided on the mud collecting frame (180), and a traveling Left and right tow links (182) for pulling the mud collecting frame (180) up and down from the link base frame (72) of the vehicle body (2), and a scoop (183) provided on the rear side of the mud collecting frame (180) Holding frame (184). Therefore, after the rice transplanter (1) travels on the road after the rice transplanting work, the rice transplanter (1) is washed at a car wash etc., and then the lifting link device (3) is moved together with the seedling planting part (4) to the traveling vehicle body ( 2), instead of attaching the mud collecting device (178) to the traveling vehicle body (2) and traveling again on the road after the rice transplanting operation, the scooping part (179) follows the road surface while touching the ground. The mud on the road is scooped up and collected in the mud collecting frame (180). Therefore, the road surface can be easily cleaned by the mud collecting device (178), and the cleaning work can be facilitated.

  In addition, although embodiment of this invention described the riding type rice transplanter (1), this invention is not limited to a riding type rice transplanter.

1: Riding type rice transplanter, 37: Seedling planting device, 78: Seedling outlet, 79: Seedling feeding belt, 80: Seedling mount, 81: Horizontal frame, 83: Connecting member, 89: Relay shaft, 122: Support roller, 168: connecting shaft, 169: connecting groove, 169a: normal groove, 169b: moving groove, 170: hook, 172: stop interlocking wire

Claims (4)

  A seedling receiving frame (81) that receives the end of the seedling, a seedling outlet (78) provided in the seedling receiving frame (81), and a connecting member (83) that moves left and right move left and right along the seedling receiving frame (81). A seedling stage (80) for supplying seedlings to the seedling outlet (78), and the seedlings on the seedling stage (80) at the left and right end of the seedling stage (80) are placed on the seedling receiving frame (81) side. In a seedling transplanting machine provided with a seedling feeding belt (79) to be transferred and a seedling planting device (37) for planting the seedling supplied to the seedling outlet (78), a connecting groove ( 169) is inserted with a connecting shaft (168) on the seedling mounting base (80) side to connect the seedling mounting base (80) so as to be movable up and down, and the relay shaft (89) transmitted to the seedling feeding belt (79) is connected to the seedling. Mounted on the platform (80), hook (170) is provided on the machine body side, and the relay shaft (89) is hung on the hook (170). (80) seedling transplanter which held by a moving state of the moving upward.   The connecting groove (169) is a normal groove portion (169a) into which the connecting shaft (168) is inserted in a normal state where the seedling stage (80) is in contact with the seedling receiving frame (81), and the seedling stage (80) is moved. The seedling transplanting machine according to claim 1, wherein the moving groove (169b) into which the connecting shaft (168) is inserted is crossed and communicated.   The seedling stage (80) is supported by the support member (122) that supports the upper part of the seedling stage (80) so as to be movable left and right and the seedling receiving frame (81) so as to be movable upward. The seedling transplanter according to claim 2.   Any one of claims 1 to 3, further comprising a stop interlocking device (172) for forcibly stopping the operation of the seedling planting device (37) in conjunction with the movement of the seedling mount (80) to the moving state. The seedling transplanter according to claim 1.

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