JP6564887B2 - Soil supply equipment - Google Patents

Description

  The present invention relates to a soil supply device for supplying soil into a seedling box.

  As a soil supply device that is incorporated in a floor soil supply system or an integrated sowing system and supplies seedling boxes with floor soil and covering soil for sowing, there is a soil putting device disclosed in Patent Document 1. In this earthing device, a belt conveyor is arranged above a conveying mechanism for conveying a seedling box, a hopper for storing the soil and placing the soil on the belt conveyor is arranged above the belt conveyor, and before the belt conveyor is hung. A soil drop guide plate is arranged in front of and under the roller, and the soil fed from the belt conveyor is guided by the soil drop guide plate so that it can be uniformly supplied into the nursery box.

JP-A-9-98669

The prior art can supply soil substantially uniformly from the front part to the rear part of the nursery box by the soil fall guide plate, and across the entire width of the right and left, but especially the front end is not supplied with soil before it, The amount of soil is reduced.
An object of this invention is to provide the soil supply apparatus which enabled it to solve such a problem of a prior art.

  The present invention provides a soil supply device that can increase the amount of soil supplied to the front end portion of a seedling box by dropping stock soil to the front end portion of the seedling box that is temporarily stocked from the feeding soil and then carried in The purpose is to do.

Specific means for solving the problems in the present invention are as follows.
First, a conveyor 3 for placing and transporting the seedling box N, and a soil feed belt 5A that is wound around the front and rear rollers 4 above the conveyor 3 and drops the soil into the seedling box N is supplied. And a hopper mechanism 8 that is disposed above the earth feed belt 5A and rotates the stirring member 7 in the funnel-like hopper body 6 to feed the earth onto the earth feed belt 5A. In soil supply equipment,
A temporary soil retaining mechanism 11 for dropping the stock soil is provided at the front end of the seedling box N that temporarily stocks the delivered soil and carries it in on the soil delivery side of the soil feed belt 5A.

  Secondly, the temporary soil retaining mechanism 11 is swingably disposed in front of the soil feed belt 5A on the soil feed side, and has a holding member 12 that holds the sent soil in combination with the soil feed belt 5A at the operation position S. The detection member 14 that is arranged on the conveyor 3 and detects the front end of the seedling box N to be carried in, and the interlocking movement of the holding member 12 from the action position S to the release position K by the detection operation of the detection member 14. And a member 16.

Third, the retaining member 12 of the temporary soil retaining mechanism 11 is formed by fixing the upper portion of the plate material 12b to the rotating shaft 12a, and the upper portion of the plate material 12b at the operation position S allows the overflow of the feeding soil. Accordingly, the earth feed belt 5A is arranged at substantially the same height as the upper surface of the earth feed belt 5A.
Fourthly, the hopper mechanism 8 is provided with an adjusting gate 18 for adjusting the amount of feeding soil at the lower portion of the side wall of the hopper body 6 on the soil feeding side, and the adjusting gate 18 is fed onto the soil feed belt 5A. A notch 18c is formed to increase the amount of soil on both sides from the center side, and a soil amount auxiliary adjusting member 19 for adjusting the opening width of the notch 18c is provided.

Fifthly, the hopper mechanism 8 is provided with an adjustment gate 18 for adjusting the amount of feeding soil at the lower part of the side wall of the hopper body 6 on the soil feeding side, and at the lower part of the side wall on the soil feeding side than the adjusting gate 18. The regulating member 2 that carries the deposition pressure of the upper soil inside and in the vicinity of the stirring member 7
0 is provided.
Sixth, the stirring member 7 of the hopper mechanism 8 has a plurality of discs 7b fixed to the rotating shaft 7a pivotally supported by the hopper body 6 while being inclined with respect to the axis. An extension stirring member 7c close to the peripheral wall of the hopper body 6 is provided on the disc 7b positioned on both shaft end sides.

According to the present invention, it is possible to increase the amount of soil supplied to the front end portion of the seedling box by dropping the stock soil to the front end portion of the seedling box that is temporarily stocked with the delivery soil and is carried in.
That is, the invention according to claim 1 is provided with the temporary soil holding mechanism 11 for temporarily stocking the discharged soil on the soil feeding side of the soil feed belt 5A, so that the stock soil is provided at the front end of the seedling box N to be carried. The amount of soil supplied to the front end of the nursery box can be increased. The temporary soil retaining mechanism 11 includes a retaining member 12 that retains the discharged soil in combination with the soil feed belt 5A at the operating position S, a detection member 14 that detects a front end portion of the nursery box N that is carried in, and detection of the detection member 14. Since it has the interlocking member 16 that swings the holding member 12 from the action position S to the release position K by the operation, the front end of the seedling box N is accurately detected, and the holding member 12 is released by the detection operation, Stock soil can be supplied to the front edge of the nursery box. In addition, since the upper part of the plate 12b at the operation position S is arranged at substantially the same height as the upper surface of the soil feed belt 5A, the feed soil can overflow when the stock soil becomes excessive, and the front end of the seedling box Can prevent excessive stock volume of stock soil.

In the invention according to claim 2, since the left and right notches 18c are formed in the adjustment gate 18 and the soil volume auxiliary adjusting member 19 for adjusting the opening width of the notches 18c is provided, the feeding soil is centered on the soil feed belt 5A. The amount of soil can be increased on both sides from the side, and the amount of soil to the left and right ends of the nursery box can be ensured .

In the invention according to claim 3, since the regulating member 20 is provided at the lower portion of the side wall of the hopper body 6 on the soil feed side, the pressure of the upper soil is increased on the inner side of the adjustment gate 18 and in the vicinity of the stirring member 7. The soil stirred by the stirring member 7 can be carried smoothly and with less resistance, and can be fed out onto the soil feed belt 5A .

In the invention according to claim 4, since the stirring member 7 is provided with the extended stirring member 7c close to the peripheral wall of the hopper body 6 on the disc 7b located on both shaft end sides of the rotating shaft 7a, the hopper body 6 The storage soil can be stirred to every corner of the interior .

It is a cross-sectional front view of the principal part of the soil supply apparatus which shows embodiment of this invention. It is a cross-sectional front view of a floor soil supply system. It is a rear view of a temporary soil reservation mechanism. It is a section side view of a temporary soil reservation mechanism. It is X arrow explanatory drawing of FIG. It is the YY sectional view taken on the line of FIG. It is a top view of a hopper mechanism. It is a cross-sectional side view of a pressure reducing roller mechanism. It is a cross-sectional side view of a rotating brush mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 2, an entire floor soil supply system 2 for supplying floor soil to the seedling box N is shown, and this floor soil supply system 2 is arranged in the front-rear direction (the seedling box N of the seedling box N is placed and transported). The transport conveyor 3 that is long in the transport direction), the seedling box N can be stocked in the vertical direction, and the seedling box supply device 21 that feeds the seedling box N forward one by one from the lower end side, and the transport conveyor 3 are arranged. The soil supply device 1 for supplying soil to the nursery box N that has been transported and transported, the pressure reducing roller mechanism 22 for suppressing the soil supplied into the seedling box N, and cleaning the surface of the seedling box N after the suppression And a rotating brush mechanism 23 capable of adjusting the amount.

The floor soil supply system 2 extends the conveyor 3 or connects separate conveyors 3 and continuously supplies the seedling boxes N by combining the irrigation mechanism, the seeding device and the soil covering device in a linear arrangement. It can be incorporated into an integrated sowing system that provides floor soil supply, irrigation, sowing, and soil covering.
The seedling box N is a single seedling box or a cell tray in which a cell tray for forming a pot seedbed having a large number of vertical and horizontal recesses is housed.

  1 to 7, the soil supply device 1 includes a conveyor 3 for placing and transporting a seedling box N, and wound around the front and rear rollers 4F and 4R above the conveyor 3 and in the seedling box N. The earth feed belt mechanism 5 having a earth feed belt 5A for dropping and supplying the earth to the earth, and the agitating member 7 disposed above the earth feed belt 5A and rotating in the funnel-shaped hopper body 6 are rotated so as to rotate the earth feed belt 5A. A hopper mechanism 8 that feeds the soil upward, a temporary soil holding mechanism 11 that temporarily stocks the soil discharged from the soil feed belt 5A, and a drive mechanism 10 are provided.

  The conveyor 3 includes a conveyor frame 26 that is formed by connecting a pair of left and right channel members to be long in the front-rear direction, front and rear support legs 27 that support the conveyor frame 26, and front and rear portions of the conveyor frame 26 in the transport direction. A drive shaft 28A and a driven shaft 28B, a pair of left and right sprockets 29 provided on the front and rear shafts 28A and 28B, a chain 30 wound around the front and rear sprockets 29 and on which a seedling box N can be placed, and each chain 30 It has engagement members 31 that are provided at regular intervals in the front-rear direction and engage with the seedling raising box N to move together.

Further, between the left and right channel members of the conveyor frame 26, a pair of left and right box rails 34 for placing and guiding the nursery box N to be conveyed, and a single chain rail 35 for placing and guiding the chain 30 are provided. And are provided.
When the lowermost seedling box N in the seedling box supply device 21 is placed on the chain 30 and the box rail 34, the conveyor 3 takes out the seedling box N by the engaging member 31, and the chain 30. The soil supply device 1 is transported at a constant speed while being placed on the top, and passes through the pressure reducing roller mechanism 22 and the rotating brush mechanism 23.

The soil supply device 1 may include a pressure reducing roller mechanism 22 and a rotating brush mechanism 23.
As shown in FIGS. 1 to 7, the soil supply device 1 has a pair of left and right sheet metal bases 39 erected on the conveyor frame 26, and a side plate 40 is erected on each of the bases 39 to frame the frame 41. The left and right bases 39 support the earth feed belt mechanism 5 and a part of the temporary earth retaining mechanism 11, and the left and right side plates 40 constitute side walls of the hopper body 6 of the hopper mechanism 8.

Further, on the inner surfaces of the left and right bases 39, there are provided upper guide members 47 that come into contact with the left and right upper surfaces of the seedling box N carried into the soil supply device 1 and prevent vertical vibrations, particularly the cell tray from being lifted. Yes.
The earth feed belt mechanism 5 includes a front roller 4F, a rear roller 4R, and an endless earth feed belt 5A wound around them. The roller shaft 43 of the front roller 4F is rotatably supported by the base 39, and the power from the drive mechanism 10 is transmitted. The roller shaft 44 of the rear roller 4R is supported by the base 39 so that the front and rear positions can be adjusted. The support member 45 is rotatably supported, and the tension of the earth feed belt 5 </ b> A can be adjusted by adjusting the support member 45 with the adjustment tool 46 in the front-rear position.

  As shown in FIGS. 1 to 4, the temporary soil holding mechanism 11 is a mechanism for dropping stock soil to the front end of the seedling box N that is temporarily stocked on the soil feed side of the soil feed belt 5A and is carried in. The holding member 12 disposed in front of the soil feed belt 5A on the soil feed side, the detection member 14 disposed on the transport conveyor 3 and detecting the front end portion of the seedling box N to be carried in, and this detection And an interlocking member 16 that moves (swings) the holding member 12 by the detecting operation of the member 14.

The holding member 12 is formed by fixing an upper portion of a flat plate 12b to a rotary shaft 12a rotatably supported by a base 39, and the plate 12b swings through the rotary shaft 12a. As the lower part moves, the posture is changed to an action position S where the lower part is close to the earth feed belt 5A and a release position K where the lower part is separated downward from the earth feed belt 5A.
The detection member 14 is a pair of left and right L-shaped bars 1 on a shaft 14a pivotally supported by a conveyor frame 26.
4b is fixed, and the upper part of the left and right L-shaped bar 14b protrudes upward from the chain 30 and is engaged with the tip of the seedling box N moved along with the chain 30 and pushed down. The shaft 14a is rotated by swinging the character-shaped bar 14b.

An intermediate shaft 50 is pivotally supported on the conveyor frame 26. The intermediate shaft 50 and the shaft 14a are interlocked and connected via an arm and a link 51, and the intermediate shaft 50 and the rotating shaft 12a of the retaining member 12 are connected to the arm and turn. The interlocking member 16 is configured to be interlocked and connected via the buckle 52, thereby transmitting the detection operation of the detection member 14 to the holding member 12.
A return urging member (coil spring) 53 fitted to the intermediate shaft 50 urges the arm and turnbuckle 52 upward and repels the plate member 12b of the retaining member 12 so as to be in the operating position S.

  When the plate member 12b of the holding member 12 is in the operating position S by the return urging member 53, the earth feeding side of the earth feeding belt 5A is inclined downwardly from the upper part to the lower part and the lower end is arcuate by the front roller 4F. When the soil that is brought into contact with or close to the soil and is moved on the soil feed belt 5A is fed from the soil feed belt 5A, the soil is received and stocked (held) together with the soil feed belt 5A.

When the seedling box N is carried in by the chain 30 of the conveyor 3, the tip of the seedling box N engages the detection member 14 and swings against the return biasing member 53, and the shaft 14 a and the interlocking member 16. The lower part of the plate 12b is moved from the action position S to the release position K via
At this time, the holding member 12 that has received stock and temporarily stocked together with the soil feed belt 5A is in a drooping posture from the top to the bottom, so the feed stock soil is released at once and the front part of the seedling box N is released. Supply to fall.

The holding member 12 can be artificially pushed down to the release position K by pushing down the plate material 12b, and can be dropped without holding the soil fed out and moved on the soil feed belt 5A.
The shaft 14a and the intermediate shaft 50 constituting the interlocking member 16 are supported by a pair of left and right support plates 55. The support plates 55 are attached to the conveyor frame 26 so that the front and rear positions can be adjusted. The detection timing of N can be adjusted.

The return urging member 53 fitted to the intermediate shaft 50 is locked to an arm whose tip is connected to the turnbuckle 52, and the coil base end is locked to a hole 53 a formed in the support plate 55. . The holes 53a are arranged in a plurality of circular arcs around the intermediate shaft 50, and the force for pushing up the turnbuckle 52 can be increased or decreased by selecting the holes 53a.
The holding member 12 performs the return from the release position K to the action position S and the loading of the stock soil at the action position S by the return biasing force of the return biasing member 53. The required return biasing force can be applied to the holding member 12 according to the amount of soil to be performed.

  The upper portion of the plate member 12b of the holding member 12 is mounted on the rotating shaft 12a, and the upper portion of the plate member 12b at the operation position S is disposed at substantially the same height as the upper surface of the earth feed belt 5A. This height of the upper part of the board 12b is a height at which the delivery soil stocked on the board 12b can overflow, and if the delivery soil accumulates too much on the holding member 12, it overflows and falls without being used as floor soil. Can be released.

1, 2, 6, and 7, a hopper mechanism 8 is provided with front and rear side walls inclined between left and right side plates 40 of a frame 41 to form a funnel-like hopper body 6 having a small lower opening. The lower agitating member 7 and the upper agitating member 60 are arranged on the bottom, and an adjustment gate 18 is provided by opening a gate below the front side wall 6A on the soil feed side.
The agitating member 7 has a rotary shaft 7a pivotally supported by the left and right side plates 40 of the hopper body 6, and a plurality of discs 7b are fixed to the rotary shaft 7a so as to be inclined with respect to the axis. The disc 7b is inclined symmetrically with respect to the rotation shaft 7a on the left and right sides, and extended stirrers 7c are provided on the discs 7b at both ends at portions away from the left and right side plates 40.

The extension agitating member 7c fixes a support member 61 to the disk 7b, and a bolt 62 is fixed to the support member 61. The bolt 62 is substantially parallel to the rotating shaft 7a, and its tip is close to the left and right side plates 40. Is protruding.
The stirring member 7 can stir the accumulated soil in the lower part of the hopper body 6 with the disc 7b. The soil near the left right side plate 40 can also be stirred every rotation because the disc 7b is inclined. However, since the frequency is low, the extension stirrer 7c is provided in a portion of the disc 7b away from the side plate 40. The soil near the left and right side plates 40 is increased in frequency and can be stirred more reliably.

  The upper stirring member 60 has a pair of substantially L-shaped bars 60b fixed to the rotating shaft 60a. A motor 10a of the drive mechanism 10 is mounted on the back surface of the hopper body 6. Power is transmitted from the motor 10a to the rotating shaft 7a of the stirring member 7, and power is transmitted from the rotating shaft 7a to the rotating shaft 60a. At the same time, power is transmitted to the roller shaft 43 of the front roller 4F of the earth feed belt mechanism 5, and the earth feed belt mechanism 5 and the upper and lower stirring members 7 and 60 are simultaneously driven in synchronization.

The adjustment gate 18 is configured by forming a rack 66 at the left and right ends of the vertical portion 18 a and providing a pinion shaft 67 that meshes with the rack 66, and adjusts the height of the vertical portion 18 a via the pinion shaft 67. By doing so, the amount of soil fed out from the hopper body 6 onto the soil feed belt 5A can be adjusted.
The adjustment gate 18 is formed with an adjustment portion 18b bent from the lower portion of the vertical portion 18a in a forward and downward direction, and the adjustment portion 18b is formed with notches 18c at both left and right ends. A soil volume auxiliary adjustment member 19 is attached so as to be adjustable in the left-right direction.

The adjustment gate 18 has openings in the notches 18c at both the left and right ends of the adjustment portion 18b by the soil amount auxiliary adjustment member 19, so that the amount of soil fed out on the earth feed belt 5A is larger than the center portion in the belt width direction. When it is supplied to the seedling box N, sufficient floor soil is secured near the left and right edges of the seedling box N or excessively supplied.
If the amount of soil fed out on the soil feed belt 5A is uniform throughout the belt width direction, the soil can flow easily, but the right and left edges of the nursery box N are smaller than the center portion, and the left and right notches 65b When the amount of soil feed out is increased, the amount of floor soil in the nursery box N is made uniform. The amount of opening of the notch 65b is adjusted in consideration of soil quality, ease of soil flow, etc., and an excessive supply of floor soil near the left and right edges of the seedling box N is prevented.

The hopper mechanism 8 includes a regulating member 20 that supports the accumulated pressure of the upper soil below the side wall (front side wall 6A) of the hopper body 6 on the inside of the adjustment gate 18 and in the vicinity of the stirring member 7. Is provided.
The front side wall 6 </ b> A is inclined inward from the upper part to the lower part, and a regulating member 20 that protrudes in the inclined extension direction is provided on the inclined lower part. The lower end of the regulating member 20 is a disc of the stirring member 7. 7b, a space is formed between the adjustment gate 18 and the soil above the regulating member 20 does not apply deposition pressure to the soil that exits to the space between the adjustment gate 18 and the adjustment gate 18. The soil agitated by the agitating member 7 passes through the lower part of the regulating member 20 to the space between the adjusting gate 18 and the adjusting gate 18 adjusts the amount of delivered soil and is sent out.

The regulating member 20 may be provided so that the vertical position of the regulating member 20 can be adjusted with respect to the inclined surface of the front side wall 6 </ b> A so as to adjust the distance from the stirring member 7.
2, 8, and 9, the pressure reducing roller mechanism 22 and the rotating brush mechanism 23 are supported by a common frame frame 70 having a gate-shaped cross section disposed on the conveyor frame 26.
The pressure reducing roller mechanism 22 supports both ends of a roller shaft 72 on which the pressure reducing roller 71 is mounted by bearing members 73, connects both ends of a substantially gate-shaped connecting member 74 to both bearing members 73, and connects the connecting member 74 to a frame frame. It is hooked and supported by a height adjusting member 75 provided on the left and right sides of 70 so as to project upward.

A sprocket 76 is provided at one end of the roller shaft 72 so that power can be transmitted from the rotary shaft 77 supported by the conveyor frame 26 to the pressure reducing roller 71 via a chain 78.
The pressure-reducing roller mechanism 22 rotates the pressure-reducing roller 71 so that the roller circumferential surface is in the same direction in synchronization with the conveyance of the seedling box N, and presses and solidifies the floor soil supplied to the seedling box N.

The height adjusting member 75 is formed with a plurality of recesses 75a for engaging the connecting member 74 with different heights. By selecting the recesses 75a, the height of the pressure-reducing roller 71 is changed to the floor soil. The pressure can be changed. The roller shaft 72 is given a downward elastic force by a spring 79.
The rotating brush mechanism 23 supports both ends of a brush shaft 81 on which a rotating brush 80 is mounted by bearing members 82, and connects both ends of a substantially portal connecting member 83 to both bearing members 82, and connects the connecting member 83 to a frame frame. It is hooked and supported by a height adjustment member 84 provided on the left and right sides of 70 so as to protrude upward.

A sprocket 85 is provided at one end of the brush shaft 81, and power can be transmitted from the drive shaft 28 </ b> A supported by the conveyor frame 26 to the rotating brush 80 via the chain 86.
The rotating brush mechanism 23 rotates the rotating brush 80 so that the conveyance of the seedling box N and the brush peripheral surface are in opposite directions, and the surface of the floor soil pressed in the seedling box N is brushed to reduce the amount of floor soil. It is corrected and unnecessary soil placed on the nursery box N is cleaned.

The height adjusting member 84 is formed with a plurality of recesses 84a for engaging the connecting member 83 with different heights. By selecting the recesses 84a, the height of the rotating brush 80 can be changed to the floor soil. The amount of correction can be changed. The brush shaft 81 is given a downward elastic force by a spring 89.
The drive shaft 28 </ b> A is driven by a drive device for the transport conveyor 3, but when the floor soil supply system 2 is incorporated in a sowing integrated system, power is transmitted from the sowing device drive device.

The drive shaft 28A is provided with a sprocket 90 that transmits power to the rotating brush mechanism 23 and a sprocket 91 that transmits power to the pressure reducing roller mechanism 22, and the power is transmitted from the sprocket 91 to the intermediate shaft 92. Reverse rotation power is transmitted from 92 to the rotary shaft 77 through a pair of gears 93.
In addition, this invention is not limited to the said embodiment, The shape of a member, a structure, a combination, etc. can be changed.

For example, the soil supply device 1 can be used as a soil covering supply device that supplies soil covering to the seedling box N after sowing.
The temporary soil retaining mechanism 11 may be configured to linearly move the plate 12b of the retaining member 12 toward the soil feed side of the soil feed belt 5A.
Moreover, the temporary soil holding | maintenance mechanism 11 is good also as a solenoid which operates the detection member 14 as a limit switch, operates the interlocking member 16 with the electrical signal from a limit switch, and moves the board | plate material 12b.

DESCRIPTION OF SYMBOLS 1 Soil supply apparatus 3 Conveyor 4F Front roller 4R Rear roller 5 Belt mechanism 5A Belt 6 Hopper body 6A Front side wall 7 Stirring member 7a Rotating shaft 7b Disc 7c Extended stirring member 8 Hopper mechanism 10 Drive mechanism 11 Temporary soil retention mechanism 12 Retention Member 12b Plate material 14 Detection member 16 Interlocking member 18 Adjustment gate 18c Notch 19 Soil volume auxiliary adjustment member 20 Restriction member

Claims (4)

The conveyor (3) for carrying the seedling box (N) and transporting it, and being wound around the front and rear rollers (4) above the conveyor (3), the soil is dropped into the seedling box (N). A soil feed belt mechanism (5) having a soil feed belt (5A), and a stirring member (7) disposed above the soil feed belt (5A) and rotating in the funnel-shaped hopper body (6) In a soil supply device comprising a hopper mechanism (8) for feeding soil on the soil feed belt (5A),
A temporary soil holding mechanism (11) for dropping the stock soil is provided at the front end of the nursery box (N) that is temporarily stocked and delivered to the soil feed side of the soil feed belt (5A) ,
The temporary soil retaining mechanism (11) is swingably disposed in front of the soil feeding belt (5A) on the soil feeding side, and holds the feeding soil together with the soil feeding belt (5A) at the operating position (S). A holding member (12), a detection member (14) for detecting the front end of the nursery box (N) that is placed on the conveyor (3) and carried in, and the detection member (14) detects the holding. An interlocking member (16) for moving the member (12) from the operating position (S) to the release position (K);
The retaining member (12) of the temporary soil retaining mechanism (11) is formed by fixing the upper portion of the plate material (12b) to the rotating shaft (12a), and the upper portion of the plate material (12b) at the operating position (S). Is arranged at substantially the same height as the upper surface of the soil feed belt (5A) so as to allow overflow of the delivered soil. The hopper mechanism (8) is provided with an adjustment gate (18) for adjusting the amount of discharged soil at the lower portion of the side wall on the soil supply side of the hopper body (6), and a soil feed belt is provided on the adjustment gate (18). to form a notch that a large amount on both sides from the feed soil on (5A) center side (18c), that you have provided the cut soil amount auxiliary adjusting member for adjusting the opening width of (18c) (19) The soil supply apparatus according to claim 1, wherein the apparatus is a soil supply apparatus. The hopper mechanism (8) is provided with an adjustment gate (18) for adjusting the amount of unloading soil at the lower portion of the side wall on the soil feeding side of the hopper body (6), and an adjustment gate ( The soil supply device according to claim 1 or 2 , further comprising a regulating member (20) for supporting the sedimentation pressure of the upper soil inward of the stirring member (7) and inside the stirring member (7) . The stirring member (7) of the hopper mechanism (8) has a plurality of discs (7b) fixed to a rotating shaft (7a) pivotally supported by the hopper body (6) while being inclined with respect to the axis. An extension stirring member (7c) close to the peripheral wall of the hopper body (6) is provided on the disc (7b) located on both shaft end sides of the rotating shaft (7a). The soil supply apparatus of any one of -3.

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