JPH0729796Y2 - Seedling stop device in rice transplanter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention holds a seedling feeding device for vertically feeding pine seedlings on a seedling mounting table provided in the rice transplanter in a stopped state to stop feeding of seedlings in the rice transplanter. It relates to the device.

[Prior art]

A seedling feeding device is provided on the seedling mounting table of the rice transplanter. This seedling feeding device is, for example, proposed in Japanese Patent Laid-Open No. 59-71613, in which a belt with protrusions is wound between a driving roller and a driven roller, and a wide area of the belt allows the seedling placing table to have a right and left sides. At the moving end, the pine seedlings are vertically fed toward the seedling receiving frame.

This seedling feeding device disconnects the clutch of the planting rod by operating the ridge-planting operation lever when the planting of the surplus row is stopped at the ridge, and at the same time, the driven roller is resisted against the spring. The belt with protrusions is relaxed by approaching the non-feeding action position, that is, the drive roller, and the vertical feeding of the pine seedlings by the belt with protrusions is stopped.

However, the above-mentioned conventional seedling feeding device loosens the belt with protrusions and stops the feeding of the belt by causing a slip between the belt and the driving roller. When the drive roller portion is in the seedling feeding position and the weight of the seedling is acting on the belt, a frictional force is applied between the belt and the drive roller, and the belt is rotated together and does not substantially stop. Since the matsu seedlings are fed vertically regardless of the feeding stop operation, there is a problem that the sapling matsu seedlings are brought into sliding contact with the laterally moving seedling receiving frame, which causes compression and failure of the seedling soil.

[Problems to be solved by the invention]

Incidentally, for example, Japanese Utility Model Laid-Open No. 60-164823 proposes a seedling feeding device in which the seedling conveying path side of the belt with protrusions is pressed and released by a pressing member provided on the inner surface of the belt.

This one has a structure in which the pressing belt projects the belt with protrusions toward the seedling transportation route side to vertically feed the pine seedlings, but the pressing belt releases the belt with protrusions from the seedling transportation route side. When the seedling feeding device is stopped, the pine seedlings are not held by the belt with protrusions and gradually slide down along the bottom surface of the seedling mounting table that steeply tilts with the vibration accompanying the progress of the machine, and move laterally with the seedling mounting table. However, there was a problem that it was impossible to prevent the seedling soil from being compressed or destroyed due to sliding contact with the seedling receiving frame.

Further, for example, Japanese Patent Laid-Open No. 59-198908 has been proposed. This type has a structure in which, when planting seedlings on the edge of the ridge, the sliding member moved to the upper surface of the belt with protrusions separates the pine seedlings from the belt and stops the vertical feeding of the seedlings at the corresponding locations. The pine seedlings held on the upper surface of the easy member gradually slide down along the bottom surface of the seedling mounting table that steeply slopes with the vibration accompanying the progress of the aircraft, and because it laterally moves together with the seedling mounting table, it makes sliding contact with the seedling receiving frame. There was still a problem that the seedlings could not be compressed or prevented from being destroyed.

Therefore, the present invention has been made in view of the above-mentioned conventional circumstances to solve the problem, and the mat seedlings are provided on the bottom side of the projection belt and on the front side while the projection belt is stopped. The present invention is carried out for the purpose of providing a seedling feeding stop device in a rice transplanter that can be held in a sandwiched state with a presser bar.

[Means for solving problems]

The present invention that achieves the above object is a rice transplanter in which a pine seedling placed on a seedling table is vertically fed toward a seedling receiving frame by a belt with a projection wound around the bottom surface of the seedling table. Is provided with a switching mechanism for selectively switching between a driven state and a stopped state, the driven shaft around which the belt with protrusions is reciprocally supported in the feeding direction of the mat seedling, and the driven shaft of the belt with protrusions is provided. Always energized in the direction away from the drive shaft, a belt up-and-down mechanism capable of pushing up the belt with protrusions and pushing up the belt with protrusions is provided inside the belt with protrusions and protrudes above the bottom surface of the seedling table. Is
A seedling presser rod for pressing the floor soil surface of the placed mat seedling is arranged, and in conjunction with the switching of the stop state of the belt with the projection of the switching mechanism, the upward movement of the belt up / down mechanism pushes it upward. It is characterized in that the bed soil of the mat seedling is held in a sandwiched state between the seedling conveying route side of the belt with protrusions and the seedling restraining rod.

[Action]

The present invention is configured as described above, and when the switching mechanism is switched to the stopped state, the belt up-and-down mechanism is operated to move up,
Since the bed soil of the mat seedlings is held in a sandwiched state between the seedling conveying path side of the belt with protrusions pushed upward and the seedling retainer rod, when the feeding of mat seedlings is stopped, It is possible to firmly sandwich and hold the bed soil between the seedling restraining rod and the seedling restraining rod in a curved shape toward the seedling restraining rod. As a result, the mat seedlings do not slip and fall due to the vibration that accompanies the progress of the aircraft, and the front edge of the bed soil does not slide against the laterally moving seedling receiving frame, preventing compression and collapse of the bed soil of the mat seedlings. Can be reliably performed.

This prevents the pine seedlings from sliding down due to the vibration accompanying the progress of the machine body, and the front edge of the floor soil from slidingly contacting the laterally moving seedling receiving frame to prevent the floor soil from being compressed or broken.

〔Example〕

Hereinafter, the drawings showing the present invention as an embodiment will be described.

As shown in FIGS. 6 to 7, the riding rice transplanter 1 includes a traveling machine body 2 and a hitch that is pivotally connected to a rear end of the parallel link mechanism 3 having a front end pivotally supported behind the traveling machine body 2. 4 and a planting part 5 connected to the rear of the hitch 4.

The traveling machine body 2 is supported by a pair of left and right front wheels 6 and rear wheels 7, and an engine 9 and a bonnet for covering the engine 9 are provided in the front.
The steering wheel 11 is provided behind the bonnet 10 in conjunction with the steering system for the front wheels 6, and behind the steering wheel 11 is a driver seat via a step 12. A virtual center line KK passing through the engine 9, the bonnet 10, the steering handle 11 and the driver's seat 13 is arranged at the center of the traveling body 2 in plan view as shown in FIG. A communication passage 15 having a sufficiently wide width is formed on the left side of the line C-C and is distributed unevenly by a distance L, and on the right side of the traveling machine body 2, the communication path 15 communicates with the step 12 in front of the driver's seat 13 from the front end. Has been done.

This width allows the traveling passage 2 on the front side to communicate with the ridges on the front side to stop the traveling machine body 2, so that the pine seedlings M from the front of the traveling machine body 2 to the seedling mounting table 17 of the planting section 5 are stopped. It is possible to smoothly and swiftly perform a transportation work for replenishing the seedlings or a replenishment work for the pine seedlings M to the auxiliary seedling mounting table mounted on the traveling machine body 2.

The planting main body 16 of the planting section 5 is provided with a seedling mounting table 17 that reciprocates in the left-right direction. The seedling mounting table 17 has an upper side approaching the traveling machine body 2 and a lower side separating from the traveling machine body 2. That is, they are inclinedly arranged in the form of a high front and a low rear. Further, a center pin 19 provided in the front and rear direction in front of the planting main body 16 is rotatably supported by a hitch 4 behind the parallel link mechanism 3, and the whole planting portion 5 is centered on the center pin 19. Although it is configured to swing freely in the left-right direction, the eighth unit is used to maintain the left-right balance of the seedling stand 17 that moves in the left-right lateral direction.
As shown in Fig. 9 to Fig. 9, the left and right sides of the seedling stand 17 are springs.
It is pulled by 20 from the center of the mounting frame 21a above the machine frame 21 extended above the hitch 4.

That is, the connecting member fixed laterally on the back surface of the seedling stand 17.
Left and right hooks 23, 23 whose mounting positions can be changed are provided on the 22, and the single spring 20 whose both ends are locked by the left and right hooks 23, 23 has a substantially central portion in the longitudinal direction. It is locked to a hanging metal fitting 24 provided at the center of the mounting frame 21a. Reference numeral 25 shown in FIG. 8 to FIG. 9 is a support frame body that supports the upper back surface of the seedling stand 17, and has a pair of left and right vertical frame bodies whose base ends are fixed to the planting main body 16 side and extend upward. It is fixed at the top of 26.

In this way, the spring 20 for adjusting the left-right balance of the seedling mounting table 17 can be adjusted in the left-right balance of the seedling mounting table 17 by moving the central side locking position of the single spring to the right or left, As described above, it is not necessary to provide a pair of springs, which are separately provided on the left and right sides, via adjustment members that can be adjusted and fixed in the length direction. Therefore, there is an advantage that the manufacturing cost can be reduced.

Further, in the above-mentioned planting section 5, a seedling receiving frame having a substantially L-shaped cross section fixed to the planting main body 16 side at the inclined lower end of the above-mentioned seedling mounting table 17.
30 facing each other, the front edge of the bed soil of the pine seedling M placed on the seedling placing table 17 slides to the seedling receiving frame 30 as the seedling placing table 17 reciprocates laterally. By passing the planting claws 32 constituting the planting mechanism 31 from the upper side in a predetermined elliptical locus through the respective seedling take-out ports, one seedling of the pine seedling M is planted on the paddy field. .

Further, a plurality of floats 33 sliding on the rice field are arranged below the planting main body 16, and the transmission mechanism provided in the planting main body 16 has a transmission shaft 34 provided through a universal joint or the like. It is driven from the traveling machine body 2 side by being connected to the drive shaft 35 on the side. The planting portion 5 is moved up and down by expanding and contracting a hydraulic expansion / contraction mechanism 36 including a hydraulic cylinder and a piston, one end of which is pivotally connected to the airframe and the other end of which is pivotally connected to the parallel link mechanism 3.

Seedlings 17 and 17 as shown in detail in FIGS. 1 and 4.
Has a length such that two and a half pine seedlings M can be placed in the vertical direction, and a width that allows the pine seedlings M to be placed in a plurality of rows at the same time in the horizontal direction. Further, a drive case 40 is connected to the planting main body 16 at a portion corresponding to the lower back surface of the seedling stand 17, and the drive case 40 has a slide shaft 41 slidable in the left-right direction and a fixed position. A seedling feeding shaft 43 that can rotate freely is projected to the left and right, and this slide shaft 41 is mounted on the seedling mounting table via a bracket 44 fixed to the shaft end.
By connecting to the connecting member 22 fixed to the back surface of 17,
The seedling stand 17 is driven so as to be able to reciprocate laterally in the left-right direction. A rotatable roller 46 is rotatably supported at a tip end portion of a rotating body 45 which is fixed to the seedling feeding shaft 43 and rotates about the shaft center.

On the other hand, as shown in FIG. 1 and FIG. 5 in detail, each seedling feeding device 50 arranged under the rear surface of the seedling mounting table 17 is rotated by a bracket 17a fixed to the rear surface of the seedling mounting table 17. It is provided with a drive shaft 51 and a driven shaft 52 which are freely supported. A ratchet wheel 53 and a drive roller 54 are fixed to the drive shaft 51, and a driven roller 55 is rotatably supported on the driven shaft 52. Has been done.

A conveyor belt 56 having a large number of relatively large protrusions 56a protruding into the bottom surface of the pine seedling M on the seedling mounting table 17 is wound around the rollers 54 and 55, and the belt 56 with protrusions is wound around the conveyor belt 56.
The transport path side passes through the rectangular hole 17c opened on the placing surface 17b of the seedling placing table 17 and the pine seedling M placed on the placing surface 17b of the seedling placing table 17 is vertically directed toward the seedling receiving frame 30. It is arranged to feed. The driven shaft 52 is supported so as to be reciprocally movable in the feeding direction of the pine seedlings M, and the driven shaft 52 is constantly urged by springs 57 arranged on both left and right sides in a direction of separating from the drive shaft 51 of the belt 56 with a protrusion. The belt 56 with protrusions is always kept in a tensioned state.

Further, a swing cam 60 is fixed to a cam shaft 59 arranged between the drive shaft 51 and the driven shaft 52, and the tip end of the swing cam 60 contacts the roller 46 of the rotating body 45. The pin 61 is planted in the middle part thereof. Further, the interlocking arm 62 rotatably supported by the drive shaft 51 is provided with two claws 63 engaged with the ratchet wheel 53 on one side thereof and a connecting pin 64 is implanted on the other side thereof. Has been done.

The connecting pin 64 of the interlocking arm 62 is fitted into a connecting hole 64a provided at the lower end side of the connecting plate 65 as shown in FIG. 2B, and the pin 61 of the swing cam 60 is provided in the connecting plate 65 as an elongated hole 65a.
Is engaged with the upper end of the interlocking arm 62 to transmit the swing of the swing cam 60 to the interlocking arm 62 in the seedling feeding state. And a spiral spring 66 arranged between the bracket 17a and the bracket 17a.
Thus, the claw 63 is always urged downward, and at the same time, the claw 63 is urged to engage with the ratchet wheel 53.

Further, at the upper end portion of the rear surface of the seedling mounting table 17, ridge planting operation levers 70, 70, 70 are installed corresponding to the guide surfaces (rows) of the pine seedlings M, respectively. The lever 70 is provided so as to rotate about a pin 71a provided on the guide 71 on a surface parallel to the rear surface of the seedling mounting table 17.
One end of each of three Bowden wires 72, 73, 74 is pivotally connected to the base end portion of 70, and the other end of the Bowden wire 72 is connected to the planting mechanism 31 for the seedling table 17 (row). It is connected to a clutch T that connects and disconnects power.

The other end of the Bowden wire 73 has a base end fixed to a belt pressing shaft 75 installed between the driven shaft 52 and the cam shaft 59, and has a tip end of a pressing link 76 that swings around the cam shaft 59 as a fulcrum. The pressing shaft 75 is provided so as to be independently operated for each seedling feeding device 50, and is shown in FIG. 2A.
As described above, the eccentric portion 79 is formed along the width direction of the belt 56 with protrusions so as to be eccentric by the height H from the axial center of the belt 56.
Belt pressing shaft 75 disposed inside the belt 56 with protrusions
The eccentric part 79 is moved upward by the rotation, and the seedling table 17
It is configured as a belt up-and-down mechanism which can be pushed upward from the bottom surface of the projection so as to press and push up the belt 56 with a protrusion.

Further, the other end of the Bowden wire 74 is pivotally connected to an upper end of a stop plate 77 having a long hole 77a. The stop plate 77 is juxtaposed with the connection plate 65 as shown in FIG. In the long hole 77a provided in the plate 77,
As shown in FIG. 2B, the connecting pin 64 of the interlocking arm 62 comes into contact with the lower end side, and the pin 61 of the swing cam 60 is fitted in a position where the swing stroke of the swing cam 60 remains.

Further, the drive shaft 51 is provided independently for each seedling feeding device 50, but the cam shaft 59 is provided with one shaft penetrating therethrough,
A swing cam 60 for each seedling feeding device 50 corresponding to each seedling mounting table (row) is fixed to the cam shaft 59.

As shown in FIG. 1 in detail, a leaf regulation part 80 is provided along the lateral direction at the lower part of the slope of the seedling placing table 17, and the leaf regulating part 80 is placed on the seedling placing table 17. The base end of a seedling pressing rod 81 for pressing the seedbed upper surface of the pine seedling M is fixed, and the seedling pressing rod 81 extends vertically along the feeding direction of the seedling mounting table 17.

Since the present embodiment is configured as described above, when the ridge planting operation levers 70 are operated to the D position (entering position) shown in FIG. Each of the pine seedlings M on 17 is sequentially planted in the field by separating the front edge facing the seedling take-out port of the seedling receiving frame 30 into one stock by the planting claw 32. When the seedling stand 17 reaches the left or right moving end, the swing cam
The arrow B is brought into contact with the roller 46 of the rotating body 45, which is constantly rotating, by the arrow B.
Move in the direction. Then, the interlocking arm 62 is rotated clockwise in conjunction with the connecting plate 65 moved via the pin 61, so that the claw 63 and the ratchet wheel 53 rotate integrally. At the same time, the drive roller 54 is rotated to vertically feed the projection belt 56 in the direction of arrow A in FIG. As a result, the pine seedlings M on the seedling mounting table 17 are vertically fed by a distance corresponding to the length of one plant.

During this vertical feed, the pin 61 of the swing cam 60 and the interlocking arm
Since the connecting pin 64 of 62 moves within the elongated hole 77a of the stop plate 77 by the movement stroke of the swing cam 60, the stop plate 77 does not move.

When the vertical feed at the moving end is completed, the swing cam 60 is disengaged from the rotating body 45, and the connecting plate 65, the interlocking arm 62, and the swing cam 60 are returned to their original positions by the restoring force of the spiral spring 66. At this time, since the claw 63 is returned integrally with the interlocking arm 62, the claw 63 and the ratchet wheel 53 are disengaged from each other, so that the ratchet wheel 53, that is, the drive roller 54 and the belt 56 with a protrusion are not returned. Holds in the vertical feed position.

And when the planting work is near the edge and it is necessary to stop planting the surplus row in order to match the row of planting rows,
The ridge planting operation lever 70 corresponding to the row to be stopped is operated to the U position (cutting position) shown in FIG. By this operation, the clutch T of the planting mechanism 31 connected to the Bowden wire 72
Becomes a cutting position and the planting claws 32 stop only for the corresponding row, and at the same time, the stop plate 77 connected to the Bowden wire 74 moves in the direction of arrow B in FIG. 3, and the seedling feeding device 50 for the corresponding row is reached. The stopped state and no further, Bowden wire
The pressing link 76 connected to the 73 moves around the cam shaft 59 in the direction of arrow B in FIG. 3, and the pressing shaft 75 of the corresponding row has the eccentric portion 79 standing up and the back surface of the belt 56 with protrusions. Push up in a chevron shape as shown in FIG.

That is, the stop plate 77 connected to the Bowden wire 74.
As the arrow moves in the direction of arrow B, the long hole of the plate 77
The connecting pin 64 engaged with the lower end of the 77a is also moved integrally, and the interlocking arm 62 is rotated clockwise, so that the ratchet wheel 53 rotates in the same manner as described above and the belt 56 with a protrusion is moved by a predetermined amount. After feeding in the direction of arrow A, it is held at the feeding position. As a result, since the interlocking arm 62 is held in the state shown in FIG. 3, the ratchet wheel 53, the drive roller 54, and the belt 56 with protrusions are held in the stopped state of the seedling feeding device 50, which does not move. At the same time, the pine seedling M bed soil on the seedling mounting table 17 is on the seedling conveying route side of the belt 56 with a protrusion pushed up by the eccentric part 79 of the pressing shaft 75 and on the surface of the pine seedling M bed soil provided on the seedling mounting table 17. It is held in a sandwiched state with the seedling pressing rod 81 located.

At this time, the soil of the pine seedlings M is pushed up by the seedling conveying path side of the belt 56 with protrusions and is transformed into a curved state, so that it is kept shorter than the length in the mounted state during vertical feeding by the amount curved. Since the contact resistance between the front edge of the bed soil and the seedling receiving frame 30 can be reduced, the seedling mounting table can be used even when the vertical feed is stopped.
Even with the pine seedling M that moves laterally back and forth together with 17, it is possible to prevent the leading edge of the bed soil contacting the seedling receiving frame 30 from being compressed or broken.

Then, while the stop plate 77 is moving to the vertical feed stop position, the pin 61 of the rocking cam 60 is idle in the elongated hole 77a of the stop plate 77 and the elongated hole 65a of the connecting plate 65 which are integrally moved. Therefore, the interlocking arm 62 is held in a play state in which the interlocking arm 62 does not operate even if the swing cam 60 contacts the rotating body 45.

Further, the stop plate 77 moved to the stop position has its long hole 77 when the ridge planting operation lever 70 is returned to the D position (entering position).
As the connecting pin 64 fitted in a returns to its original position by the biasing force of the spiral spring 66 that is integral with the interlocking arm 62, it returns to its original position.

Further, while the belt 56 with protrusions is being pushed up, the driven shaft 52 moves in the direction approaching the drive shaft 51 against the urging force of the spring 57, but the ridge planting operation lever 70 is moved to the D position ( 1) when returned to the state shown in FIG. 1 by the urging force of the spring 57, and at the same time the pressing link 76 is returned in the direction opposite to arrow B by a return spring (not shown). Since 79 rotates counterclockwise around the axis of the pressing shaft 75 and returns to the non-pressed state shown in FIG. 1, the belt 56 with protrusions is held in the parallel state shown in FIG.

[Effect of device]

As described above, the present invention is a rice transplanter that vertically feeds a mat seedling placed on a seedling placing table toward a seedling receiving frame by a protruding belt wound around the bottom surface of the seedling placing table. A switching mechanism for selectively switching between a driving state and a stopped state is provided to support a driven shaft around which the belt with protrusions reciprocates in the feeding direction of the mat seedling, and to drive the driven shaft with the protrusions. Always energized in a direction away from the shaft, provided with a belt up-and-down mechanism capable of pushing up the protruding belt by projecting above the bottom surface of the seedling mounting table inside the protruding belt, and the seedling mounting table , A seedling presser rod for pressing the floor soil surface of the placed mat seedling was arranged, and in association with the switching of the stop state of the belt with the projection of the switching mechanism, the belt up / down mechanism was lifted to push it upward. The butt Since holding the pinching state bed soil mats seedlings between attached the seedling transportation path side of the belt and the seedlings presser bar, in which excellent effects as follows.

That is, while supporting the driven shaft around which the belt with protrusions reciprocates in the feeding direction of the mat seedling, always urge the driven shaft in a direction away from the drive shaft, and move it above the bottom surface of the seedling mounting table. A belt up-and-down mechanism that protrudes and presses the belt with protrusions is provided inside the belt with protrusions, and a seedling holding rod that holds down the surface soil surface of the placed mat seedlings is placed on the seedling mounting table to switch the stop state of the switching mechanism. In conjunction with this, by raising the belt up / down mechanism, the mat soil seedling soil is held in a sandwiched state between the seedling conveying path side of the belt with protrusions pushed up and the seedling holding rod. , When the mat seedling feeding is stopped, firmly sandwich the bed soil between the seedling feeding path side of the belt with the protrusion pushed up and the seedling holding rod in a state of being curved toward the seedling holding rod. You can hold your clothes It is possible to prevent the mat seedlings from sliding off due to the vibration accompanying the progress of the aircraft like this, and the front edge of the bed soil can be prevented from slidingly contacting the laterally moving seedling receiving frame, and it is possible to reliably prevent the compression and collapse of the bed soil of the mat seedlings. can do.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a side view of a seedling mounting table with a part thereof cut away, FIG. 2A is a perspective view of an essential part, and FIG.
FIG. B is a plan view showing the relation between the connecting plate and the stop plate, FIG. 3 is a partially cutaway view for explaining the action of the seedling table, FIG. Fig. 6 is an overall side view of the riding rice transplanter, Fig. 7 is an overall plan view of the riding rice transplanter, and Fig. 8 is an overall side view of the planting part showing the left-right swing mechanism. [FIG. 3] is a front view of a left-right swing mechanism. 1 ... Passenger rice transplanter, 2 ... Passenger aircraft, 5 ... Planting section, 17
…… Seedling stand, 30… Seedling receiving frame, 50… Seedling feeding device, 51…
… Drive shaft, 52 …… driven shaft, 53 …… ratchet wheel, 54 ……
Drive roller, 55 ... driven roller, 56 ... belt with protrusion, 59 ... cam shaft, 60 ... swing cam, 62 ... interlocking arm, 63 ... pawl, 65 ... connecting plate, 70 ... ridge Planting lever, 73 …… Boden wire, 74 …… Boden wire,
75 …… Pressing shaft (belt up / down mechanism), 76 …… Pressing link,
77: Stop plate, 79: Eccentric part (belt up-and-down mechanism), 81: Seedling holding rod, M: Matsu seedling.

Claims (1)

[Scope of utility model registration request] 1. A rice transplanter in which a mat seedling placed on a seedling table is vertically fed toward a seedling receiving frame by a belt with a projection wound around the bottom surface of the seedling table, and the belt with the projection is driven. Provided with a switching mechanism that selectively switches to the stopped state,
While supporting the driven shaft around which the belt with protrusions is reciprocally movable in the feeding direction of the mat seedling, constantly urging the driven shaft in a direction away from the drive shaft of the belt with protrusions, Provide a belt up-and-down mechanism that can press and push up the belt with protrusions that protrude above the bottom surface of the seedling mounting table on the inside, and in the seedling mounting table, a seedling restraining rod that holds down the bed soil surface of the placed mat seedling. Arranged, interlocking with the stop state switching of the belt with protrusions of the switching mechanism, by the raising operation of the belt up-and-down mechanism, between the seedling conveying path side of the belt with protrusions and the seedling restraining rod pushed up. A seedling feeding stop device in a rice transplanter that holds the mat seedling soil in a sandwiched state.