JP2011254781A - Foreign matter removing structure for longitudinal transfer belt of seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve sureness of preventing generation of missing plant caused by foreign matter attached to the surface of a longitudinal transfer belt.SOLUTION: The seedling transplanter includes a lateral transfer mechanism to laterally reciprocate a seedling tray 17 with a definite stroke and a longitudinal transfer mechanism to circulate the longitudinal transfer belt 43 when the seedling tray 17 reaches right or left stroke end, and longitudinally transfer a seedling on the seedling tray 17 toward the lower end of the seedling tray 17 and is further provided with a removing means 60 to remove the foreign matter attached to the surface of the longitudinal transfer belt 43 at the back side of the seedling tray 17. The removing means 60 is constructed to work on a supported part 43A of the longitudinal transfer belt 43 supported by a roller 41 which rotatably supports the longitudinal transfer belt 43.

Description

  The present invention provides a lateral feed mechanism that reciprocates the seedling stage in a left-right direction with a constant stroke, and a seedling placed on the seedling stage every time the seedling stage reaches the left and right stroke ends with a vertical feed belt. The present invention relates to a contaminant removal structure for a longitudinal feed belt in a seedling planting apparatus including a longitudinal feed mechanism that feeds vertically toward a lower end of a seedling stage.

  The seedling planting device includes a lateral feed mechanism configured to reciprocate the seedling stage on which the mat-like seedlings are placed in the left and right directions with a constant stroke, and vertical feed each time the seedling stage reaches the left and right stroke ends. Some include a longitudinal feed mechanism configured to longitudinally feed a mat-like seedling placed on a seedling stage by rotating the belt toward the lower end of the seedling stage (see, for example, Patent Document 1).

  Also, in transplanters, etc., a brush that removes foreign substances adhering to the outer peripheral surface of the transport belt that transports pot seedlings and the like to the planting device is provided between the left and right pulley shafts that support the left and right ends of the transport belt. In some cases, the conveyor belt is configured to act on the surface of the belt portion located between the left and right pulley shafts (see, for example, Patent Document 2).

JP 2008-113633 (paragraph numbers 0016 to 0019, FIG. 2, FIG. 3, FIG. 8, FIG. 9) Japanese Patent Laid-Open No. 10-201312 (paragraph numbers 0009 to 0010, FIG. 1)

  In the seedling planting apparatus as described above, impurities such as seedling roots and soil attached to the surface of the longitudinal feed belt move downward together with the mat-like seedlings on the surface side of the seedling stage, and the lower part of the seedling stage Is deposited on the seedling receiving surface of the sliding rail that supports the sliding movement to the left and right, and the vertical feeding of the mat-like seedling by the vertical feeding belt may be obstructed. There is a possibility that it becomes impossible to take out the seedling from the seedling outlet formed on the seedling receiving surface of the moving rail, resulting in inconvenience that a missing stock occurs.

  Therefore, in order to prevent the occurrence of such inconvenience, it is conceivable to adopt the contaminant removal structure by the brush described in Patent Document 2 in the seedling planting device described in Patent Document 1, Since the brush acts on the surface of the belt part located between the upper and lower rollers (corresponding to the left and right pulley shafts) in the vertical feed belt, vibration during planting operation occurs when the vertical feed belt rotates. In some cases, the belt portion on which the brush acts may bend and escape from the brush. In such a case, the foreign matter attached to the surface of the longitudinal feed belt cannot be removed with the brush.

  In other words, there is room for improvement in order to more reliably prevent the occurrence of a stock loss due to contaminants adhering to the surface of the longitudinal feed belt.

  An object of the present invention is to make it possible to more reliably prevent the occurrence of a missing stock due to contaminants adhering to the surface of a longitudinal feed belt.

In the first problem solving means of the present invention,
A lateral feed mechanism configured to reciprocate the seedling platform in a left-right direction with a fixed stroke, and a vertical feed belt is rotated and placed on the seedling platform each time the seedling platform reaches the left and right stroke ends. A vertical feed mechanism configured to feed the seedlings vertically toward the lower end of the seedling stage,
Equipped with a removing means for removing impurities adhering to the surface of the vertical feed belt on the back side of the seedling stage,
The removing means is configured to act on a supported portion of the longitudinal feed belt supported by a roller that rotatably supports the longitudinal feed belt.

  According to this problem solving means, when the seedling platform reaches the left and right stroke ends and the longitudinal feed belt of the longitudinal feed mechanism rotates, the removal means acts on the supported portion of the longitudinal feed belt to cause the surface of the longitudinal feed belt to The seedling roots and soil adhering to the soil are removed and dropped from the back side of the seedling stage.

  And since the supported part of the longitudinal feed belt on which the removing means acts is a part supported by a roller, the supported part will not be bent due to vibration during planting operation, etc., and will not escape from the removing means, Thereby, it is possible to cause the removing means to appropriately act on the supported portion of the longitudinal feed belt regardless of vibration during the planting operation.

  In other words, regardless of vibration at the time of planting operation, the foreign matter adhering to the surface of the vertical feeding belt can be removed by the removing means, so that the foreign matter adhering to the surface of the vertical feeding belt is loaded together with the mat-like seedlings. It is possible to effectively suppress the downward movement on the surface side of the table and the accumulation on the seedling receiving surface of the slide rail.

  As a result, the foreign matter adhering to the surface of the vertical feed belt accumulates on the seedling receiving surface of the slide rail and obstructs the vertical feed of the mat-like seedling by the vertical feed belt. It is possible to more reliably prevent the inconvenience that the seedlings cannot be taken out from the seedling outlet formed on the seedling receiving surface of the slide rail and the stock loss occurs.

In the second problem solving means of the present invention, in the first problem solving means,
The removing means includes an engaging portion that engages with the left and right ends of the lower edge of the opening for vertical feeding of the seedling formed on the seedling stage, and the lowering portion of the vertical feeding belt is rotated by the removing means. The roller that can be supported is configured to act on the supported portion on the lower end side of the longitudinal feed belt that is supported.

  According to this problem-solving means, the removal means is placed on the seedling stage on the lower end side of the vertical feed belt only by engaging the left and right engaging portions provided in the removal means with the left and right ends of the lower edge of the seedling vertical feed opening. It can be easily attached to the state of acting on the supported portion of the.

  In this attached state, the left and right engaging portions of the removing means come into contact with the left and right side edges in the seedling vertical feed opening to prevent the displacement of the removing means in the left-right direction. As a result, it is possible to cause the removing means to act more appropriately on the supported portion of the longitudinal feed belt.

  Therefore, while simplifying the structure for attaching the removing means, the foreign matter adhering to the surface of the vertical feeding belt accumulates on the seedling receiving surface of the sliding rail and obstructs the vertical feeding of the mat-like seedling by the vertical feeding belt. It is possible to more reliably prevent the occurrence of a stock loss due to the above.

In the third problem solving means of the present invention, in the first or second problem solving means,
The removing means is provided with a brush that acts on the supported portion in a state where the supported portion is sandwiched between the rollers.

  According to this problem solving means, when the seedling platform reaches the left and right stroke ends and the longitudinal feed belt of the longitudinal feed mechanism rotates, the brush of the removal means sandwiches the supported portion of the longitudinal feed belt between the rollers. In this state, it acts directly on the supported portion to reliably remove the foreign matter adhering to the surface of the longitudinal feed belt and let it fall from the back side of the seedling stage.

  Therefore, although it is a simple structure using a brush, the foreign matter adhering to the surface of the vertical feeding belt accumulates on the seedling receiving surface of the sliding rail and obstructs the vertical feeding of the mat-like seedling by the vertical feeding belt. It is possible to more reliably prevent the occurrence of a stock loss due to the above.

It is a left view of a riding rice transplanter. It is a top view of a riding rice transplanter. It is a left view of the principal part of a seedling planting apparatus. It is an expanded view which shows the structure of a seedling planting apparatus. It is a front view of the principal part which shows the structure of the back side of the seedling mounting stand in a seedling planting apparatus. It is the vertical left side view of the principal part which shows the structure of the lower end side of the seedling mounting stand in a seedling planting apparatus. It is a partially broken front view of the principal part which shows the structure of the adjustment mechanism for balance springs. It is a front view of the principal part which shows the structure of a seedling cutting | disconnection detection means. It is the vertical left side view of the principal part which shows the structure of a seedling cutting | disconnection detection means. It is a front view of the principal part which shows the structure of a removal means. It is the vertical left side view of the principal part which shows the state which enabled planting of the root washing seedling. It is a bottom view of the principal part which shows the state which enabled planting of the root washing seedling.

  Hereinafter, as an example of a mode for carrying out the present invention, an embodiment in which a contaminant removal structure for a vertical feed belt in a seedling planting apparatus according to the present invention is applied to a riding rice transplanter will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the riding rice transplanter exemplified in the present embodiment connects the link mechanism 2 to the rear part of the traveling vehicle body 1 so as to swing up and down by the operation of the hydraulic lifting cylinder 3. A six-row seedling planting device 5 is connected to a lower rear end lower portion of the mechanism 2 via a support shaft 4 facing forward and backward so as to be capable of rolling. Moreover, the fertilizer application device 6 for 6 is provided over the rear part of the traveling vehicle body 1 and the seedling planting device 5 so as to have a mid-mount fertilizer specification.

  As shown in FIGS. 1 and 2, the traveling vehicle body 1 includes a hydrostatic continuously variable transmission (not shown) that includes, as a main transmission, power from an engine 8 mounted on the front portion of the body frame 7. Further, the transmission is transmitted to the left and right front wheels 10 and the left and right rear wheels 11 via a gear-type transmission (not shown) incorporated in the transmission case (hereinafter referred to as a T / M case) 9 as an auxiliary transmission. It is configured as a wheel drive type. On the rear side of the engine 8, a steering wheel 12 for driving a front wheel, a driver's seat 13, and the like are arranged to form a boarding driver 14. On the left and right lateral sides of the front portion of the traveling vehicle body 1, a preliminary seedling placement device 15 for placing three preliminary seedlings in the vertical direction with a predetermined interval is provided.

  As shown in FIGS. 1 to 5, the seedling planting device 5 includes a power distribution case 16 having a front and rear support shaft 4 and the like, and a seedling platform 17 formed so as to mount six mat-shaped seedlings. The horizontal feed mechanism 18 that reciprocates the seedling stage 17 with a fixed stroke in the left-right direction, and each mat seedling on the seedling stage 17 at the lower end of the seedling stage 17 every time the seedling stage 17 reaches the left and right stroke ends. A vertical feed mechanism 19 that feeds vertically at a predetermined pitch toward the bottom, and six rotary-type plantings that cut out a predetermined amount of seedlings from the lower end of each mat-shaped seedling placed on the seedling stand 17 and plant them in the mud portion of the field The planting frame 22 is equipped with a mechanism 20 and three leveling floats 21 for leveling a field mud surface such as a planting planned planting site by sliding the field as the traveling vehicle body 1 travels. It is configured to plant seedlings.

  The planting frame 22 is a main support member that supports a square pipe-shaped main support member 23 arranged in the left and right direction at the front lower part of the seedling planting device 5 and an upper part of the seedling mount 17 so as to be capable of reciprocating in the left and right direction. 23, a gate-shaped support frame 24 erected in a forward-tilting posture, and three transmission cases 25 that also serve as a frame extending rearward from the main support member 23 with a certain interval in the left-right direction, etc. It is composed of

  The power distribution case 16 receives power for planting work output from the T / M case 9, and distributes and supplies the power to the horizontal feed mechanism 18, the vertical feed mechanism 19, and each planting mechanism 20 (see FIG. (Not shown).

  As shown in FIGS. 1 to 6, a horizontally long lower sliding member 26 is provided at the lower end of the rear surface of the seedling table 17 so as to extend from both left and right ends of the seedling table 17. On the upper side of the rear surface of the seedling table 17, a horizontally long upper sliding member 27 that extends across the left and right ends of the seedling table 17 is provided. The lower sliding member 26 is mounted so as to be slidable relative to the left and right sliding rails 29 supported by the transmission cases 25 at both left and right ends via a seedling amount adjusting mechanism 28. The upper sliding member 27 is externally fitted to the upper end portion of the support frame 24 so as to be slidable on three rollers 31 arranged at regular intervals in the left-right direction via a vertical support shaft 30. From these configurations, the seedling mounting stand 17 is mounted on the seedling planting device 5 so as to be slidable in the left-right direction in a forward inclined posture from the upper rear end of the traveling vehicle body 1 to the lower rear end of the seedling planting device 5. It is.

  On the surface of the seedling table 17, six seedling mounting surfaces 17 </ b> B are partitioned and formed by seven partition walls 17 </ b> A extending up and down the seedling table 17. A first opening 17C used for vertical feeding of seedlings and a second opening 17D used for detecting seedling breakage are formed on the lower side of each seedling placement surface 17B. Each second opening 17D is set so that two second openings 17D sandwiching the even-numbered partition wall 17A are adjacent to each other.

  As shown in FIG. 4, the lateral feed mechanism 18 includes a lateral feed shaft 33 that extends from the power distribution case 16 to the support member 32 provided at the left end of the main support member 23. A moving member 34 that slides integrally with the seedling table 17 is fitted on the lateral feed shaft 33 so as to be relatively rotatable and relatively slidable. The moving member 34 allows relative rotation of a top member (not shown) engaged with an endless spiral groove 33 </ b> A formed on the surface of the lateral feed shaft 33 around an axis perpendicular to the lateral feed shaft 33. So that it is built in. From these configurations, the lateral feed mechanism 18 is rotated along with the endless spiral groove 33A along with the rotation of the lateral feed shaft 33. The base 17 is configured to reciprocate with a constant stroke in the left-right direction.

  As shown in FIGS. 3 to 6, the vertical feed mechanism 19 includes a left-right drive shaft 36 that extends from the power distribution case 16 to the support member 35 provided at the right end of the main support member 23. The drive shaft 36 includes drive arms 37 that rotate integrally with the drive shaft 36 at both left and right ends thereof. The drive arm 37 kicks and swings the vertical feed arm 38 provided on the seedling stage 17 every time the seedling stage 17 reaches the left and right stroke ends. The vertical feed arm 38 has a swing fulcrum 38A at a predetermined position of a vertical feed shaft 39 comprising a hexagonal shaft provided on the back surface of the lower end portion of the seedling stage 17 in a lateral direction via a one-way clutch (not shown). It is fitted. Three cylindrical shafts 40 are externally fitted to the longitudinal feed shaft 39 so as to be relatively rotatable, and two driving rollers 41 that rotate integrally with the cylindrical shaft 40 are externally fitted to each cylindrical shaft 40. Each drive roller 41 is arranged and set so as to be positioned in the vicinity of the lower end portion of the corresponding first opening 17 </ b> C on the back side of the seedling stage 17. A driven roller 42 is provided in the vicinity of the upper end of each first opening 17 </ b> C on the back side of the seedling table 17. A longitudinal feed belt 43 made of an endless rotating belt with rubber protrusions is passed over the paired drive roller 41 and driven roller 42. Each driven roller 42 is externally fitted to a corresponding one of the three support shafts 44 provided in the left-right direction on the back surface of the upper and lower intermediate part of the seedling mounting base 17 so as to be relatively rotatable. A longitudinal feed clutch 45 that interrupts transmission from the longitudinal feed shaft 39 to each cylinder shaft 40 is interposed between the longitudinal feed shaft 39 and each cylinder shaft 40.

  From these configurations, the vertical feed mechanism 19 causes the left and right drive arms 37 to kick up and swing the vertical feed arm 38 every time the seedling stage 17 reaches the left and right stroke ends. When the swing of the arm 38 is transmitted to the vertical feed shaft 39 via the one-way clutch, the drive roller 41 interlocked with the vertical feed shaft 39, the vertical feed clutch 45, and the cylinder shaft 40 together with the vertical feed shaft 39 is predetermined. The longitudinal feed belt 43 wound around the rotating driving roller 41 is rotated by a predetermined amount. Thus, the mat strips selected by the vertical feed clutch 45 among the mat strips placed on the seedling mount 17 can be vertically fed by a predetermined amount.

  As shown in FIGS. 3, 5, and 7, the seedling planting device 5 balances between the rear end upper portion of the link mechanism 2 and the left and right end portions of the upper sliding member 27 provided on the seedling mount 17. A spring 46 is installed. The left and right balance springs 46 are configured to prevent the left and right balance springs 46 from being inclined in the rolling direction with respect to the traveling vehicle body 1 due to the change in the left and right balance caused by the lateral feed drive of the seedling stage 17.

  The left and right ends of the upper sliding member 27 are equipped with an adjusting mechanism 47 that enables fine adjustment of the spring force exerted by the balance spring 46. Each adjusting mechanism 47 is screwed into a screwed portion 27A provided at both left and right end portions of the upper sliding member 27 with a knob-equipped bolt 48 in the left-right direction from the laterally outward side of the seedling platform 17 to the inside. Configured. A locking tool 49 for locking one end of the balance spring 46 is attached to the screwing start end of the bolt 48 with the knob so as to be relatively rotatable.

  Equipped with such an adjustment mechanism 47, for example, when a change occurs in the left-right balance of the seedling planting device 5 by installing a chemical spraying device or the like in the seedling planting device 5, the adjustment mechanism 47 of each By changing the length of the left and right balance springs 46 by operating the bolts 48 with knobs, the left and right balance of the seedling planting device 5 in which the spring force of each balance spring 46 has been changed by installing a chemical spraying device, etc. Can be easily and quickly finely adjusted to a state suitable for the vehicle body 1, and the rolling posture of the seedling planting device 5 with respect to the traveling vehicle body 1 can be maintained in an appropriate posture.

  As shown in FIG. 1, FIG. 2, FIG. 4 and FIG. 5, the seedling stage 17 is formed such that its upper end 17E is horizontal or substantially horizontal. Accordingly, when mat-like seedlings are supplied to each seedling placement surface 17B of the seedling placing stand 17, the mat-like seedlings are temporarily placed on the upper end portion 17E of the seedling placing stand 17 in a horizontal posture or a substantially horizontal posture. Therefore, the mat-like seedling can be easily positioned with respect to each seedling placement surface 17B for supplying the mat-like seedlings to each seedling placement surface 17B in an appropriate posture. As a result, the seedling supply to each seedling placement surface 17B can be performed appropriately and smoothly, and the trouble of supplying the mat-like seedlings to each seedling placement surface 17B obliquely can be made difficult to occur. .

  In addition, although illustration is abbreviate | omitted, it replaces with the structure which forms the upper end part 17E of the seedling mounting base 17 horizontally or substantially horizontally as mentioned above, and the upper part of the seedling mounting base 17 followed the upper part of the seedling mounting base 17 A configuration is provided that includes an extended seedling stand that is configured to be able to be moved out and out from a storage position that is stored in a posture and a use position that extends from the upper end of the seedling stand 17 toward the traveling vehicle body 1 in a horizontal posture or a substantially horizontal posture. May be. Moreover, you may comprise so that the extended seedling mounting stand comprised so that rocking | fluctuation operation was possible was carried out over the said storing position and the said use position in the upper part of the seedling mounting stand 17. FIG. Furthermore, a removable extended seedling stage that can be attached to the upper end of the seedling stage 17 so as to extend from the upper end of the seedling stage 17 toward the traveling vehicle body 1 in a horizontal posture or a substantially horizontal posture is provided. It may be configured.

  As shown in FIGS. 1 and 5, a horizontally long reinforcing member 50 is attached to the upper end of the rear surface of the seedling table 17 so as to extend from both left and right ends of the seedling table 17. A vibration device 52 is attached to the left and right central portions of the reinforcing member 50 via a support plate 51. The vibration device 52 employs a vibration motor that generates vibration by rotating an eccentric weight 52A.

  Moreover, although illustration is abbreviate | omitted, in the seedling planting apparatus 5, it switches to a closed state by contact with the press part with which the seedling mounting stand 17 reached | attained while the seedling mounting stand 17 has reached the left and right stroke ends. A normally open switch for energizing the vibration device 52 is provided.

  From this configuration, every time the seedling stage 17 reaches the left and right stroke ends, the vertical feed mechanism 19 operates and while each mat-like seedling on the seedling stage 17 is vertically fed toward the lower end of the seedling stage 17, The vibration device 52 is actuated to vibrate the upper side of the seedling stage 17 and promote the vertical sliding movement of the mat-like seedling on the upper side of the seedling stage 17. As a result, by adopting an artificial mat instead of floor soil when raising seedlings, weight reduction of the mat-like seedlings has progressed, and vertical sliding movement due to the weight of the mat-like seedlings on the upper side of the seedling mount 17 is performed. Even when it becomes difficult, the vertical feeding mechanism 19 activates the mat-like seedlings on the lower side of the seedling stage 17 and smoothly slides the mat-like seedlings on the upper side of the seedling stage 17. The mat-like seedlings placed on the seedling placement surfaces 17B can be appropriately fed in a predetermined amount.

  The configuration relating to the operation of the vibration device 52 can be variously changed. For example, the vibration device 52 may be periodically operated regardless of the arrival of the seedling stage 17 at the left and right stroke ends. Good.

  As shown in FIGS. 2, 5, 8, and 9, the seedling mounting table 17 indicates that the seedling has run out when the remaining amount of mat-shaped seedlings placed on each seedling placement surface 17 </ b> B falls below a predetermined amount. Equipped with a seedling detection means 53 for detecting. The seedling breakage detection means 53 includes three detection units 53A configured to detect the seedling breakage on the two seedling placement surfaces 17B with one limit switch 54.

  Each detection unit 53A is provided with a limit switch 54 provided in a portion sandwiched between two adjacent second openings 17D inside the even-numbered partition wall 17A, and a seedling provided in each second opening 17D so as to be able to swing back and forth. A detection arm 55 for detecting breakage, a support member 56 made of a linear steel material formed so as to serve as a swing fulcrum of two adjacent detection arms 55 across the limit switch 54 and an operating tool of the limit switch 54, and An urging spring 57 made of a linear spring steel material formed in a W-shape with left and right action portions 57A for projecting and urging the two detection arms 55 is formed.

  Each support member 56 is separated from the corresponding two detection arms 55 so as to swing and press the limit switch 54 as at least one of the corresponding two detection arms 55 protrudes and swings. Touching and touching.

  Each urging spring 57 is attached to the seedling stage 17 by sandwiching a connecting portion 57B formed in the lower part thereof between a support fitting 58 provided in the seedling stage 17 and a presser 59. The connecting portion 57B is formed to have a concave portion 57C that allows adjustment of the mounting position of the urging spring 57 with respect to the seedling stage 17 in the vertical direction. The support fitting 58 is formed with an opening 58 </ b> A that limits the adjustment range of the attachment position of the urging spring 57. The presser 59 is screwed to the support fitting 58 in a state where the presser 59 is prevented from rotating by contact with the connecting portion 57B. Then, the attachment position of the urging spring 57 with respect to the seedling stage 17 is adjusted in the vertical direction by using the recess 57C of the urging spring 57 and the opening 58A of the support fitting 58, so The distance from the swing fulcrum of each detection arm 55 at the position where each action portion 57A of the biasing spring 57 acts can be changed, and thereby each detection arm 55 obtained from the biasing force of each biasing spring 57 can be changed. The restoring force to the protruding posture can be easily adjusted to a size suitable for the weight of the mat-like seedling placed on each seedling placement surface 17B.

  Specifically, for example, when a mat-like seedling that has been increased in weight by being formed using floor soil on each seedling placement surface 17B, each biasing spring 57 with respect to the seedling placement base 17 is placed. Each biasing spring 57 is adjusted by adjusting the mounting position downward and separating the position where each action portion 57A of each biasing spring 57 acts on each detection arm 55 from the swing fulcrum of each detection arm 55. The restoring force to the protruding posture of each detection arm 55 obtained from the urging force can be easily adjusted to a large one suitable for the weight of the mat-like seedling placed on each seedling placement surface 17B. On the contrary, when mat-like seedlings whose weight has been reduced by using artificial mats instead of floor soil are placed on the seedling placement surfaces 17B, the attachment of the respective urging springs 57 to the seedling placement stage 17 The position of each biasing spring 57 is moved closer to the swing fulcrum of each detection arm 55 by adjusting the position upward, and the position where each action portion 57A of each biasing spring 57 acts on each detection arm 55. The restoring force to the protruding posture of each detection arm 55 obtained from the urging force can be easily adjusted to a small one suitable for the weight of the mat-like seedling placed on each seedling placement surface 17B.

  That is, the matted seedlings having a small weight are placed on each seedling placement surface 17B while simplifying the configuration by constructing the two detection arms 55 so as to project and bias with one biasing spring 57. In this case, it is possible to prevent erroneous detection of the seedling breakage by the seedling breakage detecting means 53 due to the restoring force of each detection arm 55 to the protruding posture overcoming the weight of the mat-like seedling.

  As shown in FIGS. 3, 5, 6, and 10, a plurality of removing means 60 for removing contaminants such as seedling roots and soil adhering to the surface of each vertical feed belt 43 are provided on the back surface of the seedling placing table 17. It has. Each removing means 60 includes hook-like left and right engaging portions 61A that engage with the left and right ends of the lower edge of each first opening 17C formed in the seedling mount 17 and arms extending from the left and right engaging portions 61A. A brush support member 61 formed in a gate shape with a portion 61B and a horizontally long holder portion 61C extending over the extending ends of the left and right arm portions 61B is provided. A vertical feed belt 43 is provided on the holder portion 61C of the brush support member 61. A brush 62 is attached to remove the foreign matter adhering to the surface of the vertical feed belt 43 along with the rotation of the belt, and the foreign matter removed from the surface of the vertical feed belt 43 between the brush 62 and the back surface of the seedling stage 17 is attached. It is configured to secure a space 63 that allows the seedling mounting stand 17 to fall on the back side.

  In each brush support member 61, the left and right arm portions 61B are formed such that the vertical length of the engaging portion side end portion is longer than the vertical length of the holder portion side end portion. A high support strength can be ensured while securing the space 63 between the rear surface of the seedling stage 17. In addition, since the vertical length of the engaging portion 61C connected to the engaging portion side end of each arm portion 61B can be increased, the engagement allowance of each engaging portion 61C with respect to the seedling stage 17 can be increased. Stability in a state where each brush support member 61 is attached to the seedling stage 17 can be improved.

  Each brush 62 is a holder of the brush support member 61 so as to act on the surface of the supported portion 43A in a state where the supported portion 43A of the longitudinal feed belt 43 supported by the drive roller 41 is sandwiched between the drive rollers 41. It is attached to the part 61C.

  From the above configuration, when the seedling stage 17 reaches the left and right stroke ends and each vertical feed belt 43 of the vertical feed mechanism 19 operates in vertical feed, the brush 62 of each removing means 60 is applied to the surface of each vertical feed belt 43. The adhering contaminants are removed and dropped from the spaces 63 between the back surface of the seedling table 17 and the brushes 62. Thereby, it is effective that the foreign matter adhering to the surface of each vertical feed belt 43 moves downward together with the mat-like seedlings on the surface side of the seedling mount 17 and accumulates on the seedling receiving surface 29A of the sliding rail 29. Can be suppressed. As a result, the foreign matter adhering to the surface of each vertical feed belt 43 accumulates on the seedling receiving surface 29A of the slide rail 29 and obstructs the vertical feed of mat-like seedlings by each vertical feed belt 43. Thus, it is possible to prevent inconvenience that the seedlings cannot be taken out from the seedling outlets 29B formed on the slide rails 29 by the respective planting mechanisms 20 and the stock removal occurs.

  Further, each brush 62 acts on the surface of the supported portion 43A in a state where the supported portion 43A of the longitudinal feed belt 43 is sandwiched between the brush 62 and the drive roller 41, so that, for example, each brush 62 is connected to the drive roller 41. Each longitudinal feed belt 43 generated when each removing means 60 is configured to act on a belt portion located between the driving roller 41 and the driven roller 42 in the longitudinal feed belt 43 located between the driven rollers 42. It is possible to prevent the longitudinal feed belt 43 from escaping from the brushes 62 due to the bending of the belt. Accordingly, it is possible to prevent the defective removal of impurities from the surface of each vertical feed belt 43 by each brush 62 due to the escape of each vertical feed belt 43 from each brush 62 due to the bending of each vertical feed belt 43. . As a result, the foreign matter adhering to the surface of each vertical feed belt 43 is accumulated on the seedling receiving surface 29A of the slide rail 29, thereby obstructing the vertical feed of mat-like seedlings by each vertical feed belt 43. Occurrence of a stock loss can be prevented more reliably.

  Furthermore, each removing means 60 is attached only by engaging the left and right engaging portions 61A provided in each removing means 60 with the left and right ends of the lower edge of each first opening 17C. In the attached state, the brush 62 of each removing means 60 comes into contact with the lower end of each longitudinal feed belt 43 from below to prevent the removal means 60 from lifting from the lower edge of each first opening 17C, and each The left and right engaging portions 61A of the removing means 60 come into contact with the left and right side edges of each first opening 17C to prevent the displacement of each removing means 60 in the left-right direction. That is, it is possible to prevent displacement of each removing means 60 with respect to each first opening 17C while simplifying the mounting structure of each removing means 60, and each longitudinal feeding belt that supports each removing means 60 by each drive roller 41. 43 can be made to act appropriately on the supported portion 43A.

  In addition, the code | symbol 64 shown in FIG.1 and FIG.3 is arrange | positioned so that it may be located above each seedling mounting surface 17B via the left-right bracket 65 etc. which were deployed at the lower end part of each seedling mounting surface 17B. The seedling stays prevent the mat-like seedlings placed on the seedling placement surfaces 17B from being lifted from the seedling placement surfaces 17B.

  As shown in FIGS. 1, 11, and 12, a seedling cassette 66 filled with root-washed seedlings for hand planting can be placed on each seedling placement surface 17 </ b> B of the seedling placement stand 17. Each seedling cassette 66 is formed so as to ensure a space 67 that allows the vertical feed belt 43 to rotate between the bottom plate 66A and the seedling placement surface 17B.

  Each seedling cassette 66 is provided with a rod 68 extending from the upper plate 66B of the seedling cassette 66 toward the opening 66C at the lower end. A press plate 69 that presses the root washing seedling in the seedling cassette toward the opening 66C is slidably fitted to the rod 68. Thus, in a state where the seedling cassette 66 is placed on the seedling placement surface 17B, the pressing plate 69 causes the root washing seedling in the seedling cassette to move downward along the rod 68 due to the inclination of the seedling cassette 66 and the weight of the pressing plate 69. It comes to press toward the opening 66C. Then, when each planting mechanism 20 is activated and the root washing seeds in each seedling cassette are taken out from each opening 66C and planted in the field, the pressure plate 69 slides downward along the rod 68 as the root washing seedlings decrease. The root-washed seedling in the seedling cassette is fed vertically toward the opening 66C.

  The brackets 65 for attaching the seedling stays receive and support the upper part of the lower end of the seedling cassette 66, and the seedling receiving member 70 for receiving the root washing seeds pressed by the pressing plate 69 toward the opening 66C of the seedling cassette 66 can be attached. It is comprised so that. Each seedling receiving member 70 is formed in a comb shape in which a plurality of seedling receiving rods 72 are arranged on a seedling receiving plate 71 across the left and right brackets 65 with a predetermined spacing in the left-right direction. Each seedling receiving rod 72 is arranged at a position that avoids contact with the planting claw 73 of each planting mechanism 20 that is planted.

  In this configuration, when the seedling cassette 66 is placed on each seedling placement surface 17B of the seedling placing stand 17 to plant the root washing seedling, the seedling receiving member 70 is attached to each seedling stay mounting bracket 65. It is possible to suppress the root washing seedling from coming into contact with the slide rail 29. Thereby, irrespective of the sliding movement of the seedling stage 17 in the left-right direction, the root-washed seedling is held in an upright posture in which it can be easily taken out from each seedling cassette 66 by each planting claw 73 of each planting mechanism 20. The root washing seedlings can be stably taken out from the seedling cassettes 66 by the planting claws 73 of the planting mechanisms 20.

  Further, when the root washing seeds are taken out from the seedling cassettes 66 by the respective planting claws 73 of the respective planting mechanisms 20 by the respective seedling receiving rods 72 of the respective seedling receiving members 70, the respective planting claws 73 are caused by root entanglement. It is possible to prevent the adjacent root washed seedling from being dragged out together with the root washed seedling that is taken out, thereby stabilizing the amount of root washed seedling taken out by each planting claw 73.

  That is, the seedling receiving member 70 is attached to each seedling stay mounting bracket 65 of the seedling mounting base 17, and the seedling cassette 66 is mounted on each seedling mounting surface 17 B of the seedling mounting base 17, thereby planting the mat-like seedlings. The riding rice transplanter configured to perform the above can be easily changed to a state in which a root washing seedling for hand planting can be planted.

  Although not shown, each seedling cassette 66 is placed on the seedling placement surface using a bracket 65 for attaching a seedling stay so that the inclination angle on the seedling placement surface can be adjusted. You may comprise so that it may equip. According to this configuration, by adjusting the inclination angle of each seedling cassette 66, it is possible to adjust the vertical feeding amount of the root washing seedling toward the opening 66C due to the pressing of the pressing plate 69.

    [Another embodiment]

[1] The seedling planting device 5 may be configured to plant roll seedlings or pot seedlings in addition to mat-shaped seedlings.

[2] The removing means 60 is configured to remove foreign substances adhering to the surface of the vertical feed belt 43 by blowing air to the supported portion 43A of the vertical feed belt 43 supported by the rollers 41 and 42. There may be.

[3] The removing means 60 is configured to act on the supported portion 43A on the upper end side of the vertical feed belt 43 supported by the roller 42 that rotatably supports the upper end portion of the vertical feed belt 43. May be.

[4] The vertical feed mechanism 19 includes rollers 41 and 42 that support the upper and lower intermediate portions of the vertical feed belt 43, and the vertical feed belt 43 supported by the rollers 41 and 42 is removed to the supported portion 43A of the upper and lower intermediate portions. You may comprise so that the means 60 may act.

[5] The removing means 60 may be configured to be attached to a support member attached to the seedling stage 17 in order to support the rollers 41 and 42 for supporting the longitudinal feed belt. Moreover, you may comprise so that the removal means 60 may be attached to the seedling mounting stand 17 with the support member. Furthermore, you may comprise the removal means 60 so that it may attach to the seedling mounting stand 17 or the planting frame 22 via a dedicated support member.

  The contaminant removal structure for the longitudinal feed belt in the seedling planting apparatus according to the present invention is configured so that the longitudinal feed belt rotates and the seedling placed on the seedling platform is rotated every time the seedling platform reaches the left and right stroke ends. A vertical feed mechanism configured to feed vertically toward the lower end of the mounting table is provided, and can be applied to seedling planting devices for riding rice transplanters, walking rice transplanters, and grass transplanters.

17 seedling stage 17C opening 18 lateral feed mechanism 19 longitudinal feed mechanism 41 roller 42 roller 43 longitudinal feed belt 43A supported portion 60 removing means 61A engaging portion 62 brush

Claims (3)

A lateral feed mechanism configured to reciprocate the seedling platform in a left-right direction with a fixed stroke, and a vertical feed belt is rotated and placed on the seedling platform each time the seedling platform reaches the left and right stroke ends. A vertical feed mechanism configured to feed the seedlings vertically toward the lower end of the seedling stage,
Equipped with a removing means for removing impurities adhering to the surface of the vertical feed belt on the back side of the seedling stage,
Contaminant removal for a vertical feed belt in a seedling planting device configured such that the removing means acts on a supported portion of the vertical feed belt supported by a roller that rotatably supports the vertical feed belt Construction.   The removing means includes an engaging portion that engages with the left and right ends of the lower edge of the opening for vertical feeding of the seedling formed on the seedling stage, and the lowering portion of the vertical feeding belt is rotated by the removing means. 2. The contaminant removal structure for a vertical feed belt in a seedling planting apparatus according to claim 1, wherein a roller that can be supported is configured to act on a supported portion on a lower end side of the vertical feed belt that is supported.   The longitudinal belt for the seedling planting device according to claim 1 or 2, wherein the removing means includes a brush that acts on the supported portion in a state where the supported portion is sandwiched between the rollers. Contaminant removal structure.

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