JP2007110948A - Soil leveling device for raising seedling container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil leveling device for raising seedling container solving problems that level adjustment of a rotary brush is bother and the device scatters soil to surroundings. <P>SOLUTION: The soil leveling device comprises a front and rear pair of rotary brushes 7, 8 installed on a conveying bed 1 of the raising seedling container A, a right and left pair of frame side plates 21 parallelly installed to the conveying bed 1 and a level adjusting device 20 for liftably adjusting each of the front side rotary axis 12 of the front and rear side brushes 7, 8 and the rear side rotary axis 15 of the rear side brush installed on the frame side plate 21. A pair of pulling and supporting members 24 is installed on both ends of the axis 12 of the front side rotary brush and each pulling and supporting member 24 is liftably installed on an adjusting screw axis 25 which has a dial 28, and the right and the left adjusting axes 25 are connected by a connecting axis 27. A plurality of steps 32 with different levels for supporting the connecting axis 27 by making the axis 27 to engage from upward are installed on the top ends of the side plates 21 in the longitudinal direction. The axis 15 of the rear side rotary brush is adjusted linking to the axis 12 of the front side rotary brush through a connecting rod 35. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a leveling device for soil supplied to a seedling container, and more particularly to a height adjusting device for a rotating brush.

Conventionally, a pair of left and right rotating arms are attached to both ends of the brush rotating shaft, each rotating arm is rotatably mounted to the transfer stand, a traction support member is provided at both ends of the brush rotating shaft, and a traction support member is provided with a dial. The adjustment screw shaft is attached to the adjustment screw shaft so that the adjustment screw shaft can be freely moved up and down, and the right and left adjustment screw shafts are connected by a connection shaft. The connection shaft is selectively engaged with a switching engagement step having a different height at the upper part of the side plate provided on the transfer table. The structure which supports is known (refer patent document 1).
JP 2003-116362 A

The known example has a problem in that adjustment is provided twice on the brush rotation shafts arranged side by side in the front and rear, and adjustment is required twice.
Further, since the floor soil supply device is provided behind the rear rotary brush, there is a problem that the height adjustment of the rear rotary brush sandwiched between the front rotary brush and the floor soil supply device is troublesome. .
In this application, when the height of the front rotating brush is adjusted, the height of the rear rotating brush can be adjusted automatically and the height of the rear rotating brush can be adjusted independently. is there.

In the present invention, a pair of front and rear rotating brushes 7 and 8 are rotatably mounted by arms 13 and 16 above a transfer table 1 for transferring a seedling container A, and the transfer table 1 inside the front arm 13 and the rear arm 16 is mounted. A pair of left and right frame side plates 21 are arranged side by side at a predetermined interval, and the front side brush rotary shaft 12 and the rear side brush rotary shaft 15 of the front and rear rotary brushes 7 and 8 are moved up and down on each frame side plate 21. A height adjustment device 20 is provided, and the height adjustment device 20 has a pair of traction support members 24 attached to both ends of the front brush rotation shaft 12 of the front rotation brush 7, and each traction support member 24 has a dial 28. The adjustment screw shaft 25 is attached to the adjustment screw shaft 25 so as to be freely movable up and down. The right and left adjustment screw shafts 25 are connected by a connection shaft 27, and the connection shaft 27 is engaged with the upper portion of the frame side plate 21 from above and supported. A plurality of replacement engaging step portions 32 are provided in the front-rear direction, and the rear brush rotating shaft 15 is connected to the front brush rotating shaft 12 by an interlocking rod 35 and adjusted in conjunction with the rear brush rotating shaft 15. It is what.
The present invention is a soil leveling device for a seedling container in which each frame side plate 21 is provided with a cover 22 surrounding the front and rear rotary brushes 7 and 8.
The present invention is a soil leveling device for a seedling container in which the interlocking rod 35 is divided into front and rear parts and connected to the attachment shaft 36 so as to be adjustable in length.

In the first aspect of the invention, the height adjustment of the rear rotating brush 8 is performed in conjunction with the front rotating brush 7, so that the adjustment is only once and the operability can be improved.
In the invention of claim 2, since the height adjustment of the rear rotating brush 8 can be interlocked with the front rotating brush 7, the upper part of the front rotating brush 7 and the rear rotating brush 8 can be integrally surrounded by the cover 22, The scattering of the soil can be prevented.
In the invention of claim 3, since the height of the rear rotating brush 8 can be adjusted independently, the initial height adjustment for making the heights of the front rotating brush 7 and the rear rotating brush 8 the same is accurately performed. Can be leveled beautifully, and by adjusting the height of the rear rotating brush 8 alone, the optimum height can be selected according to various conditions such as soil properties, supply amount, scraping amount, etc. Can be adjusted.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a transfer stand for transferring a seedling container A, 2 a transfer roll for transferring the seedling container A provided on the transfer stand 1, and 3 a floor soil supply device. The floor soil supply device 3 has a known configuration, and is configured by providing a floor soil supply hopper 4 at the top and a floor soil feed belt 5 below the floor soil supply hopper 4.
A floor soil leveling device 6 is provided on the transfer platform 1 on the lower side in the transport direction of the floor soil supply device 3. The floor soil leveling device 6 includes a pair of front and rear front rotating brushes 7 and a rear rotating brush 8. The front and rear rotating brushes 7 and 8 level the floor soil 9 supplied to the seedling raising container A while scraping a predetermined amount.

  The front (upper side) rotating brush 7 has both ends of the front brush rotating shaft 12 mounted on a pair of left and right front arms 13, and the base of the front arm 13 is rotatable to the transfer table 1 by the front base rotating shaft 14. Install to. Similarly, the rear side (lower side) rotary brush 8 has both ends of the rear brush rotary shaft 15 mounted on the left and right rear arms 16, and the base of the rear arm 16 is transferred by the rear base rotary shaft 17. Attached to the base 1 so as to be rotatable.

Accordingly, the front rotary brush 7 and the rear rotary brush 8 are provided with a height adjusting device 20. The height adjusting device 20 is configured by providing left and right frame side plates 21 on the transfer stand 1 and providing a cover 22 above the frame side plates 21. The frame side plate 21 is formed with an insertion hole 23 through which the front brush rotation shaft 12 and the rear brush rotation shaft 15 are inserted. The insertion hole 23 is arranged in accordance with the seedling container A having different heights, and the front and rear rotation brushes 7 and 8. Is allowed to go up and down.
Lower portions of the traction support members 24 are respectively attached to both ends of the front brush rotation shaft 12 of the front rotation brush 7 projecting laterally from the frame side plate 21, and lower portions of the adjustment screw shafts 25 are screwed to the upper portions of the traction support members 24. Combine. Reference numeral 26 denotes a screwing nut fixedly welded to the traction support member 24. When the adjustment screw shaft 25 is rotated, the traction support member 24 moves up and down with respect to the adjustment screw shaft 25.

The upper part of the adjusting screw shaft 25 is rotatably attached to the connecting shaft 27 in the left-right direction. 28 is a dial provided at the upper end of the adjusting screw shaft 25, and 29 is an engaging nut provided on the adjusting screw shaft 25 below the connecting shaft 27. When the dial 28 is lifted by the engaging nut 29, the connecting shaft 27 is moved upward. Move. A lock nut 30 is screwed onto the adjusting screw shaft 25 below the screw nut 26.
A spring 31 is provided between the traction support member 24 and a fixed portion such as the transfer table 1 and the traction support member 24 is constantly urged to be pulled downward.

Thus, on the upper edge of the frame side plate 21, a switching engagement step portion 32 for engaging the connecting shaft 27 is arranged on a plurality of arcs, and any one of the plurality of switching engagement step portions 32. Is selectively engaged.
In this case, among the switching engagement step portions 32, the center switching engagement step portion 32a where the connecting shaft 27 is positioned vertically above the brush rotation shaft rear brush rotation shaft 15 is used as a reference step portion. The left and right adjusting screw shafts 25 are rotated so that the lower end of the front rotating brush 7 is brought into contact with the upper surface of the front wall 33 of the seedling raising container A, the scraping amount is set to “zero”, and the front and rear of the center switching engagement step 32a. A lower switching engagement step 32 is formed on the side, and the connecting shaft 27 is engaged with the switching engagement step 32 so that the lower end of the front rotating brush 7 is below the upper surface of the front wall 33 of the seedling container A. And place a predetermined amount of floor soil.

That is, in the engaged state with the center switching engaging step 32a, the lower end of the front rotating brush 7 is brought into contact with the upper surface of the front wall 33 of the seedling raising container A to set the scraping amount to an initial state of “zero”. When selectively engaged with the switching engaging step 32, the lower end of the front rotating brush 7 is lowered by 7 to 15 mm from the upper surface of the front wall 33 of the seedling raising container A, and a predetermined amount of floor soil can be scraped off. It becomes.
In this case, the front brush rotating shaft 12 is on an arc line about which the rear arm 16 rotates about the front base rotating shaft 14, and the traction support member 24 about the connecting shaft 27 rotates. Since it moves on the arc line, the vertical amount of the brush rotating shaft 15 on the rear side of the brush rotating shaft and the step amount of each switching engaging step portion 32 do not match when adjusting the height.

Therefore, among the switching engagement step portions 32, the center switching engagement step portion 32a in which the front brush rotating shaft 12 and the connecting shaft 27 are positioned vertically is set as a reference step portion, and in this state, the left and right adjustments are made. The screw shaft 25 is rotated to bring the lower end of the front rotating brush 7 into contact with the upper surface of the front wall 33 of the seedling raising container A, and the scraping amount is adjusted to be “zero”. A switching engagement step portion 32 that is lower than the center switching engagement step portion 32a is formed on the front and rear sides of the first switching engagement portion 32a and selectively engaged with the other switching engagement step portions 32.
Therefore, the lower end of the front rotating brush 7 is placed below the upper surface of the front wall 33 of the seedling raising container A by selectively engaging with the switching engagement step 32 lower than the center switching engagement step 32a of “zero setting”. Position and scrape a predetermined amount of floor soil.

In this case, since the switching engaging step 32 of the embodiment is formed so as to be alternately lowered on the front and rear sides with respect to the center switching engaging step 32a, the front base rotary shaft 14 and the connecting shaft are formed. 27, the change in the amount of movement of the brush rotating shaft 15 on the rear side of the brush rotating shaft that moves in an arc around two points is minimized, and the setting accuracy of the scraping amount is improved. That is, as an example, when the four-step switching engagement step portion 32 of 7 mm, 10 mm, 12 mm, and 15 mm is formed, 15 mm (fourth switching engagement step portion 32 e), 12 mm (the fourth switching engagement step portion 32 e) from the rear side view. Three switching engagement step portions 32d), 0 mm (center switching engagement step portion 32a), 7 mm (first switching engagement step portion 32b), and 10 mm (second switching engagement step portion 32c). Therefore, the shift between the switching engagement step portions 32 is also reduced.
Side view, 15 mm (fourth switching engagement step 32 e), 10 mm (second switching engagement step 32 d), 0 mm (center switching engagement step 32 a), 7 mm (first switching engagement) The stepped portion 32b) and 12 mm (third switching engaging stepped portion 32c) may be formed in this order.

Thus, the height adjusting device 20 automatically adjusts the height of the rear rotating brush 8 when the height of the front rotating brush 7 is adjusted, and independently increases the height of the rear rotating brush 8. It is configured to be adjustable. The height adjusting device 20 related to the rear rotating brush 8 is attached to both ends of the brush rotating shaft rear brush rotating shaft 15 projecting sideward from the frame side plate 21 so that the rear end of the interlocking rod 35 is pivotally mounted. The front end of the flange 35 is configured to be pivotally attached to the front brush rotation shaft 12.
That is, the linkage rod 35, the transfer table 1, the front arm 13 and the rear arm 16 constitute a link mechanism, and the connecting shaft 27 is moved up and down by the left and right dials 28 to selectively engage the switching engaging step 32. By doing so, the front brush rotating shaft 12 can be moved up and down to adjust the height of the front rotating brush 7, and the front brush rotating shaft 12 is moved up and down by the interlocking rod 35 to move the rear brush rotating shaft 15 up and down. The scraping amount of the rotating brush 8 is switched.

Similarly, when the height of the front rotary brush 7 is finely adjusted by the dial 28, the height of the rear rotary brush 8 is also finely adjusted in conjunction with the dial 28.
In this case, the interlocking rod 35 is divided into a front interlocking rod 35A and a rear interlocking rod 35B, and is connected to the front interlocking rod 35A and the rear interlocking rod 35B so that the length can be adjusted by the mounting shaft 36. When the length of the interlocking rod 35 is adjusted by the mounting shaft 36, the height of the rear rotating brush 8 can be adjusted independently.
That is, depending on various conditions such as soil properties, supply amount, scraping amount, etc., the scraping accuracy and leveling accuracy can be improved by switching the front rotating brush 7 and the rear rotating brush 8 to relatively high and low. It is not a requirement of the present application how to set the height.
37 is a long hole provided in the front interlocking rod 35A, 38 is a screw hole provided in the rear interlocking rod 35B, and 39 is a guide / stopper.

Thus, the front rotating brush 7 and the rear rotating brush 8 are provided with a brush gear 40 at either one of the left and right ends of the front brush rotating shaft 12 and the rear brush rotating shaft 15. A chain (not shown) is hung between the brush transmission gear 41 provided on each of the rotation shafts 14 and 17 of the transfer roll 2 and rotated.
Since the traction support member 24 is always pulled downward by the spring 31, when the adjustment screw shaft 25 is rotated to lower the traction support member 24, the traction support member 24 is lowered by the elasticity of the spring 31. When the adjusting screw shaft 25 is reversely rotated, the pulling support member 24 is moved up against the elasticity of the spring 31.
In this case, since the lower part of the adjusting screw shaft 25 is screwed onto the upper part of the pulling support member 24, when the dial 28 is rotated, the pulling support member 24 moves up and down with respect to the adjusting screw shaft 25.

Since the adjusting screw shaft 25 below the connecting shaft 27 is provided with an engaging nut 29, when the dial 28 is lifted, the connecting shaft 27 is moved up by the engaging nut 29, and not only the connecting shaft 27 but also The scraping amount of the front and rear rotary brushes 7 and 8 can be changed by lifting the connecting shaft 27 with the left and right dials 28 and engaging with the other switching engaging step 32.
Further, since the lock nut 30 is screwed onto the adjusting screw shaft 25 below the screwing nut 26 fixed to the pulling support member 24, once adjusted, no deviation occurs.
Further, when the insertion hole 23 through which the front and rear brush rotation shafts 12 and 15 are provided in the frame side plate 21 is formed in an arc shape centering on the front base rotation shafts 14 and 17, the brush rotation shafts 12 and 15 are arranged vertically. Smooth and suitable.

As described above, the height adjusting device 20 is provided between the frame side plate 21 and the front and rear brush rotating shafts 12 and 15, and the height adjusting device 20 includes the connecting shaft 27, the dial 28, the spring 31, and the frame side plate 21. It comprises a plurality of switching engaging step portions 32 and interlocking rods 35 provided on the upper edge.
Therefore, an irrigation device 45 is provided on the lower side of the front rotating brush 7. The irrigation apparatus 45 forms a nozzle hole 47 at a predetermined interval in a pair of front and rear irrigation horizontal cylinder portions 46, one end of the irrigation horizontal cylinder portion 46 is closed by a plug 48, and the other end is attached to and detached from the connecting pipe 49 and rotated. Install freely. The connecting pipe 49 connects the rising cylindrical portion 50 to the front and rear center positions, and one end of the upper horizontal cylindrical portion 51 is connected to the rising cylindrical portion 50. The upper horizontal cylinder portion 51 is provided with a water meter (pressure gauge) 52, a regulating valve 53, an automatic opening / closing valve 54, a relief valve 55, and a hose connection portion 56. A hose (not shown) connected to a water source (not shown) is connected to the hose connection portion 56. 56A is a chemical | medical agent suction part which connects the hose (illustration omitted) connected to the tank (illustration omitted) which put the chemical | medical agent.

In the irrigation device 45, a pair of irrigation horizontal cylinder portions 46, a connecting pipe 49, a rising cylinder portion 50, and an upper horizontal cylinder portion 51 constitute an irrigation pipe 57, and the irrigation pipe 57 is attached to an irrigation frame 58 provided on the transfer table 1. It is configured to be detachable. The irrigation frame 58 is provided with a central support portion 60 that supports the upper horizontal cylinder portion 51 of the irrigation pipe 57 at an intermediate position on the upper and lower sides of the central frame 59 formed by a pair of left and right plate members. Arm portions 61 are provided on both the front and rear sides of the central frame 59, and the irrigation tube support portions 62 that support the irrigation horizontal tube portion 46 of the irrigation pipe 57 are provided on the arm portion 61.
In the irrigation pipe 57, each part of the irrigation pipe 57 is placed on the central support part 60 and the irrigation cylinder support part 62 of the irrigation frame 58, a cover 65 is placed above the irrigation pipe 57, and the cover 65 is placed on the irrigation frame. It is fixed to 58 with a fastening tool 66.

Therefore, since the irrigation pipe 57 is simply placed on the irrigation frame 58 and pressed by the cover 65, the irrigation pipe 57 is sandwiched up and down by the irrigation frame 58 and the cover 65, and can be attached and detached while having a simple support structure. It becomes easy.
Therefore, the cover 65 only needs to have a shape that can hold the irrigation pipe 57 from above, and the upper top plate 67 that contacts the upper horizontal tube portion 51 and the irrigation horizontal tube portion 46 that is connected to the upper top plate 67. What is necessary is just to comprise having the nozzle contact part 68 contact | abutted to the upper surface of this, and the opening window part 69 which avoids the said water meter 52 grade | etc.,. The opening window 69 is formed in such a size that it can be removed so as to be pulled upward while avoiding the water meter 52. Reference numeral 70 denotes a nut to which a fastener 66 provided on the irrigation frame 58 is screwed.
The irrigation device 45 irrigates the floor soil of the seedling container A. By rotating the irrigation horizontal tube portion 46 with respect to the connecting pipe 49, the nozzle hole 47 is inclined to supply water for irrigation. Expected to level the floor soil K at the corner of the rear wall 71 of the seedling raising container A by spraying backward.
Accordingly, the floor soil K at the corner of the rear wall 71 of the seedling raising container A is configured to be leveled by irrigation by the irrigation device 45, and the irrigation device 45 also serves as a corner-leveling device.
Reference numeral 72 denotes a front wall corner leveling device for leveling the floor soil K at the corner of the front wall 33 of the seedling container A.

Thus, a seed supply device 75 is provided on the lower side of the irrigation device 45. The seed supply device 75 detachably attaches a seed supply hopper 78 to a side plate 77 provided above the transfer table 1 so as to freely move up and down. Although illustration is omitted, an auxiliary hopper may be provided above the seed supply hopper 78.
The lower part of the seed supply hopper 78 is provided with a rear guide plate 79 and a front guide plate 80 in a funnel shape. The lower end of the rear guide plate 79 is provided at a predetermined interval with respect to the front guide plate 80 to form a hopper supply port 81. A supply amount adjusting plate 82 for adjusting the opening amount of the hopper supply port 81 is movably attached to the lower surface of the rear guide plate 79. Reference numeral 83 denotes an adjustment dial for moving and adjusting the supply amount adjustment plate 82.
In the vicinity of the front end of the front guide plate 80, a horizontal shaft feed roll 84 having a large diameter in the left-right direction is provided. On the outer peripheral surface of the horizontal axis feeding roll 84, a horizontal groove-shaped feeding recess 85 parallel to the generatrix direction (left and right direction) is formed on the entire circumference at a desired interval. The feeding recess 85 is formed in such a width that the seed fits in one or two rows in the circumferential direction in the circumferential direction. Slits 86 are provided on the entire circumference of the outer peripheral surface of the horizontal shaft feed roll 84 at intervals shorter than the lateral width of one seed in the generatrix direction (left-right direction). The depth of the slit 86 is formed to be substantially the same as or slightly deeper than that of the feeding recess 85, and a scraping knife 87 is fitted in each slit 86.

A rotating leveling brush 88 is provided at a position above the horizontal axis feeding roll 84 (precisely, just behind the horizontal axis feeding roll 84), and the rotary leveling brush 88 is driven and rotated by any means. Then, excess seed that does not fit into the feeding recess 85 and rotates together with the horizontal axis feeding roll 84 is swept back to the seed reservoir 89 on the supply port hopper supply port 81 side.
Thus, the seed reservoir 89 is formed in a space between the upper surface of the front guide plate 80 and the outer peripheral surface of the horizontal axis feeding roll 84, and a predetermined amount of seed is retained in the seed reservoir 89, thereby extending the horizontal axis. The seed is securely fitted into the feeding recess 85 of the roll 84.
An opening 90 is formed in the seed reservoir 89, and a shutter 91 is provided in the opening 90. The shutter 91 is attached to the lower surface of the front guide plate 80 by a mounting knob 92 that can be adjusted to a distance with respect to the horizontal axis feeding roll 84 and is detachable.

A discharge derivative 93 is provided below the opening 90. The discharge derivative 93 is formed of a plate member and is attached to the full width between the left and right side plates 77 of the seed supply device 75. The discharge derivative 93 is provided with an upwardly inclined upper inclined portion 94 at the upper portion so as to be on the upper side in the upper portion, and at a lower portion of the upper inclined portion 94 with a predetermined interval with respect to the outer peripheral surface of the horizontal shaft feeding roll 84. The vertical plate portion 95 is formed, and a guide path 96 is formed between the vertical plate portion 95 and the outer peripheral surface of the horizontal shaft feeding roll 84. The lower part of the vertical plate part 95 is formed in a lower inclined part 97 that descends rearward, and guides seeds to fall from a guide path 96 to a seed collection container 98 (box) provided on the transfer table 1 below the seed supply device 75. .
The discharge derivative 93 is provided to prevent the seeds remaining in the seed reservoir 89 from being scattered around the seed supply device 75 when discharging the remaining seeds. In order to facilitate the attachment and detachment of the shutter 91, when the seed falling from the opening 90 is arranged as far as possible from the front guide plate 80 within a range that can be guided to the guide path 96, the remaining seeds are prevented from scattering, The residual seed discharge operation is facilitated, which is preferable.

99 is a seed guide cover provided on the rear surface of the horizontal shaft feed roll 84 and guides the seed fitted in the feed recess 85 so as not to be damaged from the upper position to the lower position, and 100 is the height of the horizontal axis feed roll 84. The sowing part height adjusting mechanism for adjusting the height of the transfer table 1 up and down relative to the transfer table 1, 101 is a motor, and 102 is a seed receiving container.
In this case, the motor 101 is attached to the side plate 77 on the rear side of the horizontal axis feeding roll 84, the horizontal axis feeding roll 84 portion of the side plate 77 is formed to have substantially the same width as the horizontal axis feeding roll 84, and the seed supply hopper 78 is a frame. The lower edge of the side plate 77 is inclined in accordance with the lower surface of the front guide plate 80 and the front side of the horizontal shaft feed roll 84 forms a space 103 without the side plate 77 in a side view.
With this space portion 103, the seeding state in the seedling raising container A can be visually recognized, and the work is facilitated.

Therefore, a seed dropping rotary brush 105 is provided on the lower side of the seed supply device 75. The seed dropping rotary brush 105 is mounted on the frame 106, transmits the rotation of the transfer roller 2 and rotates.
A conveying motor 110 that drives the transfer roller 2 is provided in the space 103 between the rotating brush 105 and the seed supply device 75. The conveyance motor 110 is formed to be waterproof, and is attached to the inner surface of the transfer table 1 so as to protrude inward below the upper surface of the transfer roller 2. A cover 111 is provided above the transport motor 110.
That is, since the transfer motor 110 is conventionally provided on the upper surface of the transfer table 1, the entire length of the transfer table 1 is increased. However, the transfer table 1 is attached to the transfer table 1 below the upper surface of the transfer roller 2. The floor soil leveling device 6 and the like are rationally arranged in the space on the upper surface of 1 to shorten the entire length of the transfer table 1.

Moreover, since the conveyance motor 110 is provided in the space 103 between the rotary brush 105 and the seed supply device 75, the arrangement is rational. That is, the space 103 is different from the lower part of the floor soil leveling device 6 and the irrigation device 45. The space part 103 is dropped only by a slight drop of water at the time of irrigation. Since the conveyance motor 110 is provided here, the space for the conveyance motor 110 can be secured while widening the space 103, and the space is effectively used.
Therefore, a soil covering supply device 115 is provided on the lower side of the rotating brush 105. The soil covering supply device 115 has a known configuration, and is configured by providing a supply hopper 116 at an upper portion and providing a soil covering feeding belt 117 below the supply hopper 116. A soil covering leveling brush 118 is provided on the lower side of the soil covering supply device 115.

(Operation of Example)
The connecting shaft 27 for connecting the adjusting screw shaft 25 provided on the pulling support member 24 attached to the front brush rotating shaft 12 of the front rotating brush 7 is engaged with any one of the switching engaging step portions 32 and the connecting shaft 27 is engaged. In this state, the left and right adjusting screw shafts 25 are rotated so that the lower end of the front rotating brush 7 is brought into contact with the upper surface of the front wall 33 of the seedling raising container A, and the scraping amount is set to “zero”. When the connecting shaft 27 is engaged with another switching engagement step 32 that is lower than the switching engagement step 32 by holding the shaft 27 upward, the next switching engagement step 32 and the next switching engagement step 32 are engaged. Thus, the traction support member 24 is lowered by the height of the switching engaging step portion 32, whereby the brush rotating shaft rear brush rotating shaft 15 is also lowered, and the front rotating brush 7 is set to a predetermined height.
In this state, when the seedling container A to which the floor soil has been supplied is supplied to the transfer table 1, it is transferred by the transfer roll 2 and scraped off by a predetermined amount when passing under the front rotary brush 7.

Therefore, when changing the scraping amount, when the connecting shaft 27 is engaged with the other switching engagement step portion 32 among the plurality of switching engagement step portions 32, the connection shaft 27 is thereby adjusted. The shaft 25 is moved up and down, the adjusting screw shaft 25 moves the traction support member 24 up and down, and the traction support member 24 moves the front brush rotating shaft 12 up and down to change the height of the front rotating brush 7 and change the scraping amount. To do.
Further, when using the seedling container A having different heights, as described above, the left and right adjusting screw shafts 25 are moved with the connecting shaft 27 engaged with any of the switching engaging step portions 32 as described above. Rotate to bring the lower end of the front rotating brush 7 into contact with the upper surface of the front wall 33 of the seedling raising container A, set the scraping amount to “zero”, and then hold the dial 28 or the connecting shaft 27 and lift it upward. The connecting shaft 27 is engaged with another switching engagement step 32 lower than the switching engagement step 32, and the front rotary brush 7 is set to a predetermined height.

Since the front and rear rotary brushes 7 and 8 are arranged side by side, the lump that adheres to and rotates with the front end of the rear rotary brush 8 is leveled by the front rotary brush 7, so that a beautiful finish is achieved. However, the height adjustment in the case of the rear rotating brush 8 is very troublesome.
That is, in order to adjust the height of the rear rotary brush 8 which is performed by looking at the contact state between the lower end of the rear rotary brush 8 and the wall surface of the seedling raising container A from the front, the front rotary brush 7 becomes an obstacle and the rear side From the bottom, the lower end of the rear rotary brush 8 can only be viewed from below the floor soil feed belt of the floor soil supply device 3, which is very troublesome.
In the present application, when the height of the front rotary brush 7 is adjusted, the height of the rear rotary brush 8 can be adjusted automatically and the height of the rear rotary brush 8 can be adjusted independently. Since it is configured, the height of the rear rotating brush 8 can be adjusted in conjunction with the adjustment of the height of the front rotating brush 7 and the operability is improved.

  That is, the rear end of the interlocking rod 35 is pivotally attached to both ends of the rear brush rotating shaft 15 projecting laterally from the frame side plate 21, and the front end of the interlocking rod 35 rotates to the front brush rotating shaft 12. Since the shaft is freely attached, the link mechanism 35, the transfer table 1, the front arm 13 and the rear arm 16 constitute a link mechanism, and the connecting shaft 27 is moved up and down by the left and right dials 28 for switching. When the engagement step portion 32 is selectively engaged, the front brush rotating shaft 12 can be moved up and down to adjust the height of the front rotating brush 7. The upper and lower of the front brush rotating shaft 12 are linked by an interlocking rod 35 to rotate the rear brush. Since the shaft 15 is moved up and down, the scraping amount of the rear rotating brush 8 is switched in conjunction with the front brush rotating shaft 12.

Similarly, when the height of the front rotary brush 7 is finely adjusted by the dial 28, the height of the rear rotary brush 8 is also finely adjusted in conjunction with the dial 28.
In this case, the interlocking rod 35 is divided into front and rear and is configured to be connected to the attachment shaft attachment shaft 36 so that the length thereof can be adjusted. Therefore, when the length of the interlocking rod 35 is changed and adjusted by the attachment shaft 36, The individual height of the rear rotating brush 8 can be adjusted. That is, when the length of the interlocking rod 35 is increased, the rear rotating brush 8 is increased, and when the length of the interlocking rod 35 is decreased, the rear rotating brush 8 is decreased.
Therefore, the irrigation device 45 is provided on the lower side of the front rotating brush 7, and the irrigation pipe 57 of the irrigation device 45 is configured by providing the upper horizontal cylinder portion 51 at the upper center of the pair of front and rear irrigation horizontal cylinder portions 46. Therefore, the length of the irrigation device 45 only needs to be long enough to provide the irrigation horizontal tube portion 46, and the length of the irrigation device 45 can be formed as short as possible. The whole can be shortened.

In addition, the irrigation device 45 has a triangular shape with the upper horizontal cylinder portion 51 as the apex, as viewed from the side, by the irrigation horizontal cylinder portion 46 and the upper horizontal cylinder portion 51, and a hydraulic gauge (pressure gauge) 52 is connected to the upper horizontal cylinder portion 51. Since all of the adjustment valve 53, the automatic opening / closing valve 54, the relief valve 55, and the hose connection portion 56 are provided, the front and rear length of the irrigation device 45 can be formed as short as possible.
Therefore, the irrigation frame 58 may be provided with arm portions 61 on both the front and rear sides of the central frame 59 formed of a plate member, and the irrigation frame 58 can be accommodated within the front and rear length of the irrigation pipe 57 in a side view. In this respect, the front and rear length of the irrigation device 45 can be formed as short as possible.
The irrigation pipe 57 has its irrigation horizontal cylinder part 46 and the upper horizontal cylinder part 51 placed on the central support part 60 and the irrigation cylinder support part 62 of the irrigation frame 58, and the cover 65 is placed from above the irrigation pipe 57. Since the cover 65 is fixedly attached to the irrigation frame 58 with the fastening member 66, the irrigation pipe 57 can be easily attached and detached.

Therefore, since the irrigation pipe 57 is simply placed on the irrigation frame 58 and pressed by the cover 65, the irrigation pipe 57 is sandwiched up and down by the irrigation frame 58 and the cover 65, and can be attached and detached while having a simple support structure. It becomes easy.
In this case, since the irrigation horizontal tube portion 46 of the irrigation device 45 is rotatably attached to the connecting pipe 49, the irrigation device 45 irrigates the floor soil of the seedling raising container A, while irrigating water is supplied. By adjusting the angle to spray backward, water for irrigation leveles the floor soil K at the corner of the rear wall 71 of the seedling raising container A, and the operation of the corner leveling device of the rear wall 71 can be expected.
That is, simply irrigating in the vertical direction does not collapse because the amount of irrigation hitting the corner soil K is small, but in this application, the irrigation horizontal cylinder portion 46 is rotated with respect to the connecting pipe 49 to change the direction of the nozzle hole 47. Since it can be made obliquely on the rear side, oblique irrigation hits the rear wall 71 and gathers to push the corner floor soil K into a flat shape, thereby making a corner.
Therefore, since the irrigation device 45 also serves as a rear-wall chamfering leveling device, the rear-wall chamfering leveling device provided on the transfer table 1 can be omitted, and the front-rear length of the entire transfer table 1 is made as short as possible. Can be formed.

When the seedling raising container A reaches below the seed supply device 75, the seed supply is received.
When the seed supply device 75 puts seeds into the seed supply hopper 78, the seeds are fitted into the feeding recesses 85 of the horizontal shaft feeding roll 84, and the excess seeds below the rotating leveling brush 88 are removed from the seed reservoir 89. In addition, while being fitted in the feeding recess 85, it is raised by the rotation of the horizontal shaft feeding roll 84 and passes below the rotating leveling brush 88. It is guided down to fall and seeded in the seedling container A.
In this case, the seed reservoir 89 is formed in a space between the upper surface of the front guide plate 80 on the front end side of the rear guide plate 79 and the outer peripheral surface of the horizontal shaft feeding roll 84, and a predetermined amount of the seed reservoir 89 is formed in the seed reservoir 89. By retaining the seed, the fitting of the seed into the feeding recess 85 of the horizontal shaft feeding roll 84 is ensured.

An opening 90 is formed in the seed reservoir 89, and a shutter shutter 91 is detachably attached to the opening 90 so that the distance can be adjusted, and when the shutter 91 is removed and the opening 90 is opened, Residual seeds in the seed reservoir 89 can be easily discharged, and maintenance after the sowing operation and switching of the seeds such as varieties can be easily performed.
In this case, the opening 90 of the seed reservoir 89 is configured such that the front end of the front guide plate 80 is disposed at a predetermined interval from the outer peripheral surface of the horizontal shaft feeding roll 84, and the shutter 91 is provided on the lower surface of the front guide plate 80. Since the seed reservoir 89 is formed by bringing the tip of the shutter 91 close to the outer peripheral surface of the horizontal axis feeding roll 84, the shutter 91 is a part of the components of the opening 90 and the seed reservoir 89. Can be rationally configured.

Thus, below the opening 90, the upper portion of the upper inclined portion 94 is an upper inclined portion 94 that rises forward as it goes upward, and the outer peripheral surface of the horizontal-axis feeding roll 84 below the upper inclined portion 94. Since the discharge derivative 93 formed by the vertical plate portion 95 positioned at a predetermined interval is provided, when the opening 90 is opened by the shutter 91, the residual seed in the seed reservoir 89 is guided to the upper inclined portion 94. Then, it enters the guide path 96 between the vertical plate portion 95 and the horizontal axis feed roll 84 and is recovered in a seed receiver (box) seed recovery container 98 provided on the transfer platform 1 below the seed supply device 75.
In this case, the upper end of the vertical plate portion 95 is separated from the lower surface of the front guide plate 80 as much as possible within a range in which seeds falling from the opening 90 can be guided to the guide path 96 in order to facilitate attachment / detachment of the shutter 91. Therefore, it is preferable to prevent scattering of residual seeds and facilitate the discharge operation of residual seeds.
Thus, the seed supply device 75 attaches the motor 101 to the side plate 77 on the rear side of the horizontal axis feeding roll 84, and the horizontal axis feeding roll 84 portion of the side plate 77 is formed to have substantially the same width as the horizontal axis feeding roll 84, Since the space 103 is formed below the lower surface of the front guide plate 80 of the seed supply hopper 78 without providing the side plate 77, the space 103 between the lower side of the seed supply device 75 and the rotary brush 105 is widened. The seeding state from the space 103 to the seedling raising container A can be visually confirmed, and the operation is facilitated.

The sowing apparatus whole side view. A side view of the soil leveling device. FIG. FIG. The partial side view of the frame side plate. The partial front view of the same height adjustment apparatus. FIG. The side view of a corner removal apparatus and an irrigation apparatus. The perspective view of an irrigation apparatus. The cornering action state diagram by an irrigation apparatus. The side view of a seed supply apparatus. The same part schematic side view. The side view of the space part between a seed supply apparatus and a covering soil supply apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Transfer stand, 2 ... Transfer roll, 3 ... Floor soil supply hopper, 4 ... Floor soil supply hopper, 5 ... Floor soil supply belt, 6 ... Soil leveling device, 8 ... Rear side rotation brush, 7 ... Front side rotation brush , 9 ... floor soil, 15 ... rear brush rotary shaft, 16 ... rear arm, 17 ... rear base rotary shaft, 12 ... front brush rotary shaft, 13 ... front arm, 14 ... front base rotary shaft, 20 ... high Adjusting device, 21 ... frame side plate, 22 ... cover, 24 ... traction support member, 25 ... adjusting screw shaft, 26 ... screwing nut, 27 ... connecting shaft, 28 ... dial, 29 ... engaging nut, 30 ... locking Nut, 31 ... spring, 33 ... front wall, 35 ... interlocking rod, 36 ... mounting shaft, 37 ... long hole, 38 ... screw hole, 39 ... guide, 40 ... brush gear, 41 ... brush transmission gear, 66 ... stop Dressing device, 67 ... upper top plate, 68 ... nozzle contact part, 69 ... opening window part, DESCRIPTION OF SYMBOLS 0 ... Nut, 72 ... Front wall corner leveling device, 75 ... Seed supply device, 77 ... Side plate, 78 ... Seed supply hopper, 79 ... Rear side guide plate, 80 ... Front side guide plate, 81 ... Hopper supply port, 82 ... Supply amount adjusting plate, 83 ... Adjusting dial, 84 ... Horizontal axis feeding roll, 85 ... Feeding recess, 86 ... Slit, 87 ... Scraping knife, 89 ... Seed reservoir, 90 ... Opening portion, 91 ... Shutter, 92 DESCRIPTION OF SYMBOLS ... Mounting knob, 93 ... Discharge derivative, 94 ... Upper inclined part, 95 ... Vertical plate part, 96 ... Guide way, 98 ... Seed collection container, 99 ... Seed guide cover, 100 ... Seeding part height adjustment mechanism, 101 ... Motor , 102 ... Seed receiving container, 103 ... Space portion, 105 ... Rotating brush, 106 ... Frame, 110 ... Conveyance motor, 111 ... Cover, 115 ... Covering soil supply device, 116 ... Feeding hopper, 117 ... Covering soil feeding belt,

Claims (3)

A pair of front and rear rotating brushes 7 and 8 are rotatably attached by arms 13 and 16 above a transfer table 1 for transferring the seedling container A, and a pair of right and left is mounted on the transfer table 1 inside the front arm 13 and the rear arm 16. Frame side plates 21 are juxtaposed at predetermined intervals, and each frame side plate 21 has a height adjusting device for moving up and down the front brush rotating shaft 12 and the rear brush rotating shaft 15 of the front and rear rotating brushes 7 and 8 respectively. The height adjusting device 20 has a pair of traction support members 24 attached to both ends of the front brush rotation shaft 12 of the front rotation brush 7, and each traction support member 24 has an adjustment screw shaft 25 having a dial 28. The left and right adjusting screw shafts 25 are connected by a connecting shaft 27, and the switching shafts having different heights are supported by engaging the connecting shaft 27 with the upper portion of the frame side plate 21 from above. Providing a plurality of parts 32 in the longitudinal direction, the rear brush rotating shaft 15 constituting the nursery containers soil Hitoshitaira device to adjust in synchronization in conjunction with front brush rotation axis 12 by the interlocking rod 35. The soil leveling apparatus for a seedling container according to claim 1, wherein each frame side plate (21) is provided with a cover (22) surrounding the front and rear rotating brushes (7, 8). 3. The soil leveling apparatus for a seedling container according to claim 1 or 2, wherein the interlocking hook 35 is divided into front and rear parts and connected to the attachment shaft 36 so as to be adjustable in length.

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