JPH10215693A - Corner part bed soil pressurization device for seedling raising box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the corner part bed soil pressurization device of a seedling raising box capable of adjusting a pressurization depth, beautifully performing leveling and improving operability by connecting a parallel link for a front wall corner to a rear wall corner part pressurizing body or the like. SOLUTION: The parallel link 18 for a rear wall corner is arranged on the tilt at a side rear part and the parallel link 30 for the front wall corner composed of a first arm 31 for the front wall corner and a second arm 33 for the front wall corner attached by attaching shafts 32 and 34 formed on the rear part of the attaching shafts 20 and 22 and a front wall corner part pressurizing body 36 fixed so as to connect the lower part of the first arm 31 for the front wall corner and the second arm 33 for the front wall corner for pressurizing the corner part of the front wall of the seedling raising box is arranged on the rear side of the parallel link 18 for the rear wall corner. The parallel link 30 for the front wall corner is connected to the rear wall corner part pressurizing body 24 by a spring 37 for a front link so as to be turned downwards at all times and is also connected to the parallel link 18 for the rear wall corner so as to control downward turning by a connection body 39 for standby.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for pressing a floor soil at a corner of a nursery box.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No. 2-190120 discloses a method in which a frame is fixed at a position above a transfer table for feeding a seedling box laterally, and the frame is attached by a single mounting shaft provided on the frame side. A wall corner arm and a rear wall corner pressing body for pressing a corner of a rear wall of the seedling raising box fixed to a lower portion of the rear wall corner arm are disposed obliquely rearward and inclined, and provided behind the mounting shaft. A front wall corner arm attached by a single mounting shaft and a front wall corner pressing body for pressing a corner of the front wall of the seedling raising box fixed to a lower portion of the front wall corner arm are provided on the rear wall corner arm. It describes a corner floor soil pressing device of a seedling raising box that is arranged on the rear side and is configured so that an arm for a rear wall corner and an arm for a front wall corner can be interlocked.

[0003]

In the known example, since the corner pressing body is provided at the lower portion of the arm, the corner pressing body moves in an arc around the mounting shaft. However, there is a problem that it can only be pressed so as to be depressed and cannot be leveled. The pressing depth can be adjusted, and it can be beautifully leveled.

[0004]

The object of the present invention is to make it possible to adjust the pressing depth, to make the floor soil surface even and beautiful, and to improve the operability.

[0005]

According to the present invention, a frame 9 is fixed at a position above a transfer table 1 for feeding a nursery box 2 sideways, and a pair of left and right mounting shafts 20 and 22 provided on the frame 9 side. Seedling raising box fixed so as to connect the attached rear wall corner first arm 19 and rear wall corner second arm 21 to the lower portion of the rear wall corner first arm 19 and rear wall corner second arm 21. A rear wall corner parallel link 18 comprising a rear wall corner pressing body 24 for pressing a corner of the rear wall 4 is disposed obliquely rearward and inclined, and a mounting shaft 32 provided behind the mounting shafts 20 and 22. ,
The first arm 31 for the front wall corner and the second arm 33 for the front wall corner and the lower part of the first arm 31 for the front wall corner and the second arm 33 for the front wall corner, which are attached by 34, are fixed. A front wall corner parallel link 30 comprising a front wall corner pressing body 36 for pressing a corner of the front wall 5 of the seedling raising box 2 is disposed behind the rear wall corner parallel link 18, The front parallel link 30 is connected to the rear wall corner pressing body 24 by a front link spring 37 so as to always rotate downward, and the rear wall corner parallel link is controlled by a standby connecting body 39 to restrict downward rotation. This is a device for pressing the floor soil at the corner of the nursery box, which is also connected to 18. The present invention relates to the parallel link 18 for the rear wall corner.
Is a first arm 19 for a rear wall corner below the mounting shaft 20.
Is pulled by a rear link spring 25, and a pressing depth adjusting stopper 26 is brought into contact with a rear wall corner first arm 19 projecting above the mounting shaft 20 to raise the rear wall corner pressing body 24 to a predetermined height. Corner floor of a seedling box in which the pressing depth adjusting stopper 26 is changed in position to change the vertical width of the rear wall corner pressing body 24 so that the pressing depth can be changed and adjusted. It is a soil pressing device. According to the present invention, the mounting shafts 20 and 22, the mounting shafts 32 and 34, and the stopper 26 for adjusting the pressing depth are vertically mounted on the frame 9 via a link mechanism.
This is a device for pressing the floor soil at the corner of the nursery box provided in 1 and 11. According to the present invention, the mounting plates 11, 11 are not moved downward by a height adjusting dial 13 provided on the frame 9 side, but are suspended in an upward movement in a free state. Corner floor soil of a seedling box provided with an engaging plate portion 15 which engages with the lower part of the dial 13 to retreat the rear wall corner pressing body 24 and the front wall corner pressing body 36 above the transfer path of the seedling raising box 2. It is a pressing device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
1 is a transfer table, 2 is a seedling box, and the transfer table 1 is provided with any transfer means for transferring the seedling box 2 in the direction a. The transfer table 1 has a rear wall 4 and a front wall 5 on the rear side in the transfer direction of the seedling raising box 2.
Is provided with a corner pressing device 6 for pressing the floor soil at the corner of the corner. The corner pressing device 6 includes a rear wall corner pressing device 7 for pressing a corner of the rear wall 4 and a front wall corner pressing device 8 for pressing floor soil at a corner of the front wall 5.
And A lower end of a side plate 10 of a frame 9 is fixed to the transfer table 1, and a pair of right and left mounting plates 11 that move up and down with respect to the frame 9 are mounted between a front upper portion of the side plate 10 via a link mechanism 12. A screw shaft portion of a height adjustment dial 13 is provided on the side plate 10 of the frame 9 by screwing, and the lower end of each height adjustment dial 13 is attached to the mounting plate 11.
And an engaging member (nut) 14 provided on the lower surface of the mounting plate 11 at the lower end of the screw shaft portion of the height adjusting dial 13.
And the mounting plate 11 is moved up and down with respect to the frame 9 by turning the height adjustment dial 13. The mounting plate 11 is provided with an engagement plate portion 15 for release, and when the engagement plate portion 15 is engaged with the engagement member 14, the rear wall corner pressing device 7 and the front wall corner pressing device 8 are moved to the seedling raising box. Retreat above the second transfer path. Reference numeral 16 denotes a pointer, and a standby height at which the rear wall corner pressing body 24, which will be described later, collides with the inner surface of the rear wall 4 of the seedling raising box 2 by adjusting to a scale (groove) 17 provided on the side plate 10. Adjust the length.

The rear wall corner pressing device 7 includes a pair of right and left rear wall corner parallel links 18 having a middle portion of a rear wall corner first arm 19 mounted on a left-right mounting shaft 20 and a rear wall corner second arm 19. Arm 21
Are fixed to the mounting shaft 22 in the left-right direction, and the mounting shafts 20 and 22 are mounted on the mounting plate 11. Attachment plates 23 are fixed to the lower portions of the left and right rear wall corner first arms 19 and the rear wall corner second arms 21, respectively. The rear wall corner pressing body 24 for pressing the corner of No. 4 is attached. Therefore, the rear wall corner parallel link 18 is, to be precise, the first arm 19 for the rear wall corner, the second arm 21 for the rear wall corner, and the mounting plate 11 connecting the upper part thereof.
And a rear wall corner pressing body 24 (mounting plate 2)
3 is also a component of the rear wall corner pressing body 24).

A rear link spring 25 is provided between the mounting plate 23 and the mounting shaft 22 for urging the rear wall corner first arm 19 to always rotate upward. Further, a stopper 26 for adjusting the pressing depth is provided in the rotation locus of the first arm 19 for the rear wall corner above the mounting shaft 20. The pressing depth adjusting stopper 26 is configured to be movable back and forth in the elongated hole 27 provided in the mounting plate 11, and the position of the pressing depth adjusting stopper 26 is changed to tilt the parallel link 18 for the rear wall corner. By changing the width, the vertical width of the rear wall corner pressing body 24 is changed, and the pressing depth (the depth from the upper surface of the nursery box 2 to the upper surface of the floor soil) is adjusted.

The front wall corner pressing device 8 is provided with a pair of left and right front wall corner parallel links 30 on the rear side of the pair of left and right rear wall corner parallel links 18 in the transfer direction of the seedling raising box 2. The upper part of the first arm 31 for the corner is fixed to the mounting shaft 32, and the upper side of the second arm 33 for the front wall corner of the parallel link 30 for the front wall corner is fixed to the mounting shaft 34, respectively. Board 11
A mounting plate 3 is provided below the parallel link 30 for the front wall corner.
5 is fixed, and a front wall corner pressing body 36 for pressing a corner of the front wall 5 of the seedling raising box 2 having an L shape in a side view is attached to the mounting plate 35 (the mounting plate 35 presses the front wall corner). It is also a component of the body 36). A front link spring 37 is provided between the front wall corner first arm 31 and the rear wall corner pressing body 24 to urge the front wall corner parallel link 30 to always rotate downward. An engaging shaft 38 is provided at the upper end of the front wall corner second arm 33 above the mounting shaft 34, and the engaging shaft 38 is formed on the rear end side of the shaft-shaped standby connecting body 39. Slot 4
0 is engaged, and the front end of the standby connecting body 39 is axially attached to the upper end of the rear wall corner first arm 19 by the shaft 41.

Accordingly, the first arm 31 for the corner of the front wall always tends to rotate downward, but the connecting member 39 for standby pulls the engagement shaft 38 to regulate it, and the pressing member 36 for the front wall corner is pressed. ,
The rear wall corner pressing device 7 is made to stand by at the rear side of the rear wall corner pressing body 24 above the front wall 5 of the seedling raising box 2. Therefore, the elasticity of the rear link spring 25 is set stronger than that of the front link spring 37. In addition, the parallel link 30 for the front wall corner
Is interlocked with the rear wall corner parallel link 18, but the distance between the rear wall corner pressing body 24 and the front wall corner pressing body 36 is reduced, and the distance between the engagement shaft 38 and the shaft 41 is reduced. At this time, the engaging shaft 38 moves in the long hole 40 of the standby connecting body 39 and absorbs it.

The lower part of the rear wall corner pressing body 24 is connected to the front wall 5.
When the rear wall 4 passes, the rear wall corner parallel link 18 and the front wall corner parallel link 30 return to the standby position. 4
Reference numeral 2 denotes a front guide roller and a rear guide roller provided on the front and rear sides of the corner pressing device 6, and the front guide roller 42 and the rear guide roller 42 are provided so as to slide on the upper surface of the side wall of the seedling raising box 2 and rotate. .

[0012]

Next, the operation will be described. The present invention is configured as described above. When the seedling raising box 2 is supplied to the transfer table 1, the seedling raising box 2 is transferred in the direction A, and the floor soil is supplied by the upper floor feeding device during the transfer. Since the supply of the floor soil is a method of removing excess by supplying a large number of seeds, the upper surface of the floor soil is leveled by the rotating leveling brush, and the seedling box 2 that cannot be removed evenly by the rotary leveling brush. Excess corner soil accumulated in the corners of the rear wall 4 and the front wall 5 is pressed by the corner pressing device 6. The corner pressing device 6 includes a rear wall corner pressing device 7 for pressing a corner of the rear wall 4 and a front wall corner pressing device 8 for pressing a corner of the front wall 5. 7 Parallel link 1 for rear wall corner
8 is urged by a rear link spring 25 so as to rotate upward, and the first arm 1 for the rear wall corner of the parallel link 18 for the rear wall corner.
The upper part of the mounting shaft 20 is pressed against the pressing depth adjusting stopper 26 to restrict the rotation. As a result, the upper part of the rear wall corner parallel link 18 is restricted from rotating upward, and the rear wall corner part is pressed. The body 24 does not come into contact with the upper surface of the floor soil in the seedling raising box 2 but stands by at a height at which the body 24 collides with the rear wall 4 of the seedling raising box 2.

The front wall corner parallel link 30 is urged by a front link spring 37 so as to always rotate downward. However, the rear wall corner parallel link 18 and the standby connecting body 39 are urged.
And the engagement shaft 38 is pulled by the standby connecting body 39, so that the rotation of the front wall corner second arm 33 is restricted. As a result, the entire front wall corner parallel link 30 is turned downward. The movement is restricted, and it is made to stand by at an upper position not in contact with the front and rear walls 4 and 5 of the seedling raising box 2. Then, in the above state,
When the seedling box 2 having extra corner soil that cannot be removed by filling the floor soil with the transfer table 1 and leveling with the rotary leveling brush is transferred, the rear wall 4 of the seedling box 2 is pressed by the rear wall corner pressing body 24. Abutting against the rear edge of the seedling raising box 2 to advance the rear wall corner pressing body 24 by the forward movement of the rear wall 4 (the action of getting over the front wall 5 is the same as passing through the rear wall 4 described later). Omitted.)

When the rear wall corner pressing body 24 advances, the rear wall corner first link 19 and the rear wall corner second arm 21 rotate about the mounting shafts 20 and 22. Then, the rear wall corner pressing body 24 descends while sliding on the front surface of the rear wall 4, and when the rear wall corner first arm 19 and the rear wall corner second arm 21 are in a substantially vertical state, the rear wall corner 4 The soil is pressed to the maximum and flattened, and the first arm 19 for the rear wall corner and the second arm 21 for the rear wall corner are further rotated.
Rises while sliding on the front surface of the rear wall 4, and when the rear wall 4 passes below the rear wall corner pressing body 24, returns to the original standby position by the elasticity of the rear link spring 25, and is used for the rear wall corner. First arm 1
9 comes into contact with the pressing depth adjusting stopper 26 and stops.
When the rear wall corner pressing body 24 moves forward, the front link spring 37 pulls the front wall corner parallel link 30, while the rear wall corner pressing body 24 moves the shaft 41 to the center of the mounting shaft 20. Since the pivoting member moves to the rear side, the regulation of the standby connecting body 39 is loosened, and the engaging shaft 38 moves by the movement of the shaft 41 to rotate the front wall corner second arm 33 about the mounting shaft 34. As a result, the front wall corner parallel link 30 rotates downward as a whole.

At this time, since the shaft 41 is far away from the mounting shaft 20, the shaft 41 is moved backward by a predetermined ratio with respect to the forward distance of the rear wall corner pressing body 24. When the first arm 31 for the front wall corner and the second arm 33 for the front wall corner are in a substantially vertical state, the corner soil of the front wall 5 is maximized. The first arm 31 for the front wall corner and the second arm 33 for the front wall corner are further rotated so that the rear wall 4 passes below the rear wall corner pressing body 24, so that the rear wall corner is formed. By the upward rotation of the parallel link 18, the standby connecting body 39 pulls the engagement shaft 38 to rotate the entire front wall corner parallel link 30 upward and return to the original standby position. In this case, since the standby connecting body 39 causes the front wall corner pressing body 36 to wait at the standby position, the front wall corner pressing body 3 is moved with respect to the forward distance of the rear wall corner pressing body 24.
The shaft 41 and the engaging shaft 38 are moved backward by a predetermined ratio.
When the distance between the rear shaft 41 and the engagement shaft 38 of the rear wall corner pressing body 24 is set closer to the length of the standby connecting body 39, the rear wall corner pressing body 24 is moved rearward. At this time, the engaging shaft 38 is moved away from the wall 4 by the connecting member 39 for standby.
There is no hindrance by moving inside the long hole 40.

As described above, the rear wall corner pressing body 24 and the front wall corner pressing body 36 descend to level the corners of the front and rear walls 4, 5, but at this time, the rear wall corner parallelism Since it is lowered by the link 18 and the front wall corner parallel link 30, the rear wall corner pressing body 24 and the front wall corner pressing body 36 are vertically moved up and down to press and level the corner soil beautifully. In particular, even when the standby height position and the pressing depth are changed, the pressing device moves vertically up and down, so that the pressing device has high versatility. That is, when the height adjustment dial 13 is turned, the mounting plate 11 is moved up and down with respect to the side plate 10 of the frame 9 to change and adjust the standby height position. At this time, the standby height is adjusted by aligning the pointer 16 of the mounting plate 11 with the scale (groove) scale 17 provided on the side plate 10. Also, the position of the pressing depth adjusting stopper 26 is changed,
When the inclination of the rear wall corner parallel link 18 is reduced by moving the seedling raising box 2 upward, the vertical width of the rear wall corner pressing body 24 is increased, and the pressing depth is increased.

The parallel link 18 for the rear wall corner and the parallel link 30 for the front wall corner set the height of the rear wall corner pressing body 24 and the front wall corner pressing body 36 according to the length of the standby connecting body 39. When the parallel link 18 for the rear wall corner is set by the stopper 26 for adjusting the pressing depth, the parallel link 30 for the front wall corner is synchronized with this, and the adjustment of the standby height is the same. The lower ends of the height adjusting dials 13 are respectively inserted into the mounting plate 11, and the lower end of the mounting plate 11 is provided with an engaging tool (nut) engaging tool 14 provided at a lower end of a screw shaft portion of the height adjusting dial 13. The mounting plate 11 can be freely lifted with respect to the side plate 10 and the height adjusting dial 13 because the mounting plate 11 is suspended and supported.
When the engaging device 5 is engaged with the engaging device 14, the rear wall corner pressing device 7 and the front wall corner pressing device 8 are retracted above the transfer path of the seedling raising box 2.

[0018]

According to the present invention, a frame 9 is fixed at a position above a transfer table 1 for feeding a seedling raising box 2 sideways, and a rear wall attached to the frame 9 by a pair of front and rear mounting shafts 20 and 22 in the left-right direction. Corner first arm 19 and rear wall corner second arm 21
And a rear wall corner pressing body 24 pressing the corner of the rear wall 4 of the seedling raising box 2 fixed so as to connect the lower portions of the rear wall corner first arm 19 and the rear wall corner second arm 21. The rear wall corner parallel link 18 is disposed obliquely rearward and is inclined, and the first arm 31 for the front wall corner and the second arm for the front wall corner mounted by the mounting shafts 32 and 34 provided behind the mounting shafts 20 and 22. Seedling raising box 2 fixed to connect the two arms 33 and the lower parts of the first arm 31 for the front wall corner and the second arm 33 for the front wall corner.
The front wall corner parallel link 30 comprising a front wall corner pressing body 36 for pressing a corner of the front wall 5 is connected to the rear wall corner parallel link 1.
8, the front wall corner parallel link 30 is connected to the rear wall corner pressing body 24 by the front link spring 37 so as to always rotate downward, and the standby link body 39 is rotated downward. The rear floor corner pressing body 24 and the front wall corner pressing body 36 are formed of the rear floor corner pressing body 24 and the front wall corner pressing body 36 because the corner soil floor pressing device of the seedling box is also connected to the rear wall corner parallel link 18 so as to restrict the movement. The parallel link for corners 18 and the parallel link for front wall corners 30 have the effect of vertically lowering and beautifully pressing and leveling the corner soil. Particularly, even when the standby height position and the pressing depth are changed, the vertical up and down direction is achieved. Therefore, there is an effect that a pressing device having high versatility can be obtained. The present invention relates to the parallel link 1 for the rear wall corner.
8 is a first arm 1 for a rear wall corner below the mounting shaft 20.
9 is pulled by a rear link spring 25,
The stopper 26 for adjusting the pressing depth is brought into contact with the first arm 19 for the rear wall corner projecting upward, and the rear wall corner pressing body 24 is pressed.
At a predetermined height position, and the position of the pressing depth adjusting stopper 26 is changed to change the vertical width of the rear wall corner pressing body 24 so that the pressing depth can be changed and adjusted. Since the corner floor soil pressing device is used, the pressing depth can be changed only by changing the position of the pressing depth adjusting stopper 26 and changing the vertical width of the rear wall corner pressing body 24. This has the effect of being able to press the corners irrespective of the amount of floor soil supplied to the nursery box 2. Further, since the front wall corner parallel link 30 is connected to the rear wall corner parallel link 18 by the standby linking body 39, if the vertical width of the rear wall corner press body 24 is adjusted, the front wall corner press body is adjusted. The top and bottom width of 36 can be adjusted at the same time, the operability is very simple, and all seedling boxes 2
Can respond to According to the present invention, the mounting shafts 20, 22 and the mounting shafts 32, 34 and the pressing depth adjusting stopper 26 are vertically mounted on the frame 9 via a link mechanism. Since the apparatus is a device for pressing the floor soil at the corner of the seedling raising box provided in the seedling raising box, there is an effect that the seedling raising box 2 having a different height can be accommodated. According to the present invention, the mounting plates 11 and 11 are not moved downward by the height adjustment dial 13 provided on the frame 9 side, but are suspended freely in the upward movement. Corner floor soil of a seedling box provided with an engaging plate portion 15 which engages with the lower part of the dial 13 to retreat the rear wall corner pressing body 24 and the front wall corner pressing body 36 above the transfer path of the seedling raising box 2. When not used for testing or the like, the pressing device is retracted, the use range may be expanded, the operation may be simply moved upward, and the retreating operation is very simple. Is provided, and there is an effect that the cost is not increased. In addition, it is the name of the corner floor soil pressing device of the nursery box,
The type may be fertilizer, as long as it presses the corner when the supply filled in the nursery box is removed with a rotating brush, as long as it presses the upper corner of the supply filled in the nursery box. , And the invention is not limited by the title, the code, or the like.

[Brief description of the drawings]

FIG. 1 is an overall vertical side view.

FIG. 2 is a vertical sectional side view of the same.

FIG. 3 is a side view showing a state in which a nursery box is in contact with a rear wall corner pressing body.

FIG. 4 is an operation state diagram.

FIG. 5 is a side view of a state in which a seedling box is in contact with a front wall corner pressing body.

FIG. 6 is a side view showing a state where a corner is pressed.

FIG. 7 is a side view of a state before a seedling raising box passes below a rear wall corner pressing body.

[Explanation of symbols]

1 ... transfer stand, 2 ... seedling box, 3 ... transfer roll, 4 ... rear wall,
5 front wall, 6 corner pressing device, 7 rear wall corner pressing device
8: front wall corner pressing device, 9: frame, 10: side plate, 1
DESCRIPTION OF SYMBOLS 1 ... Mounting plate, 12 ... Link mechanism, 13 ... Height adjustment dial, 14 ... Engagement tool, 15 ... Engagement plate part, 16 ... Pointer, 17
... Scale, 18 ... Parallel link for rear wall corner, 19 ... First arm for rear wall corner, 20 ... Mounting shaft, 21 ... Second arm for rear wall corner, 22 ... Mounting shaft, 23 ... Mounting plate, 24 ... Rear Wall corner pressing body, 25: rear link spring, 26: pressing depth adjustment stopper, 27: long hole, 30: front wall corner parallel link, 31
... First arm for front wall corner, 32 ... Mounting axis, 33 ... Second arm for front wall corner, 34 ... Mounting axis, 35 ... Mounting plate, 36 ... Front wall corner pressing body, 37 ... Spring for front link, 38 ... engagement shaft, 3
9 ... Standing connector, 40 ... Long hole, 41 ... Shaft.

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[Procedure amendment]

[Submission date] June 11, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 3

FIG. 2

FIG. 4

FIG. 5

FIG. 6

FIG. 7

Claims (4)

[Claims] 1. A frame 9 is fixed at a position above a transfer table 1 for horizontally feeding a seedling raising box 2, and is mounted on a pair of left and right mounting shafts 20 and 22 provided on the frame 9 side for a rear wall corner. A first arm 19 and a second arm 21 for a rear wall corner; a first arm 19 for the rear wall corner and a second arm 21 for a rear wall corner
A rear wall corner parallel link 18 comprising a rear wall corner pressing body 24 for pressing a corner of the rear wall 4 of the seedling raising box 2 fixed so as to connect the lower part of the seedling box 2 is arranged obliquely rearward and inclined, and 2
The first arm 31 for the corner of the front wall and the second arm 3 for the corner of the front wall, which are attached by the attachment shafts 32, 34 provided behind 0, 22
3 and a front wall corner pressing body 36 for pressing the corner of the front wall 5 of the seedling raising box 2 fixed so as to connect the lower portions of the first arm 31 for the front wall corner and the second arm 33 for the front wall corner. The parallel link 30 for the front wall corner is arranged behind the parallel link 18 for the rear wall corner, and the front link spring 30 for the front wall corner always rotates downward. A corner floor soil pressing device for a nursery box connected to the corner pressing body 24 and also connected to the rear wall corner parallel link 18 so as to restrict the downward rotation by the standby connecting body 39. 2. The rear link corner parallel link according to claim 1, wherein the rear link corner parallel link is configured to pull a rear wall corner first arm below the mounting shaft by a rear link spring. The pressing depth adjusting stopper 26 is brought into contact with the rear wall corner first arm 19 protruding upward, and the rear wall corner pressing body 24 is made to stand by at a predetermined height position. The rear wall corner pressing body 2
4. A soil floor pressing device for a nursery box in which the pressing depth is changed and the pressing depth is adjusted by changing the vertical width of 4. 3. The mounting shaft according to claim 2, wherein
2 and the mounting shafts 32 and 34 and the stopper 26 for adjusting the pressing depth are provided on a pair of left and right mounting plates 11 and 11 which are vertically attached to the frame 9 via a link mechanism. Soil pressing device. 4. The mounting plate according to claim 3, wherein
1 is a height adjustment dial 13 provided on the frame 9 side.
Does not move downward, but the upward movement is hung in a free state. The mounting plates 11, 11 are engaged with the lower part of the height adjusting dial 13 to engage the rear wall corner pressing body 24 and the front wall corner pressing body 36. A floor soil pressing device for a seedling raising box provided with an engaging plate portion 15 for retracting the seedlings above the transfer path of the seedling raising box 2.