JP2006211998A - Flower bulb-planting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flower bulb-planting machine capable of planting many flower bulbs while arranging the bulbs in line by precisely arranging the planting postures and directions while reducing the load on an operator. <P>SOLUTION: The flower bulb-planting machine has a flower bulb-planting device 11 for planting the flower bulbs in the field while keeping the bulbs in a prescribed posture, in a traveling machine body 1 equipped with an engine 1. The flower bulb-planting device 11 has a gripping arm 16 for detachably gripping the flower bulb. The gripping arm 16 is constituted so as to intermittently move while changing the posture from the receiving posture for receiving the bulb at the tip part of the gripping arm 16 to the planting posture for piercing the tip part to the field face A by the power of the engine while synchronizing with the forward movement of the traveling machine body 1. The gripping arm 16 faces the tip part to the rear operation part 8 than the flower bulb-planting device 11 in the traveling machine body 1 at the receiving posture. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure of a bulb planting machine for planting bulbs such as seed garlic and seed pods at appropriate intervals and in an appropriate posture with respect to a field.

  In general, bulbs (seed balls) such as seed garlic need to be planted in the field with the top bud portion (the part where the buds appear) facing up. In addition, since the garlic leaves spread and grow along the arcuate part of the bulb that is generally fan-shaped in plan view, the leaves grown from the adjacent planted bulbs do not overlap. The bulbs must be planted in the same direction. For this reason, conventionally, the planting work of bulbs has been performed manually one by one so as to align the posture and orientation of the bulbs. However, in such work, there is a problem that work efficiency per unit planting area is remarkably low, and the burden on the worker who bends and plantes is heavy.

  As a measure for solving this problem, for example, a structure of a seedling transplanting machine described in Patent Document 1 is applied to manufacture a working machine for planting a bulb. The seedling transplanter has a self-propelled traveling machine body having a swingable arm that can swing up and down, and a narrowed transplanting cup that holds a pot seedling at the tip of the swinging arm. It has. A rotary pot for dropping and supplying the pot seedling to the transplanting cup is attached to the upper part of the traveling machine body between the U-shaped handle that protrudes rearward and in plan view. The transplanting cup is configured to move up and down while drawing a substantially elliptic locus between the rotary pot and the field scene via a link mechanism.

According to this structure, if the pot seedling is supplied to the rotary pot while the traveling machine body is moved forward along the fence while straddling the fence of the field, the rotary pot rotates horizontally, for a predetermined time. Pot seedlings are dropped from one place (rear end in the direction of travel) of the rotary pot at intervals, and the pot seedlings are put into the transplanting cup at the raised position. Thereafter, the seedling planting device moves up and down to draw a substantially elliptical locus, and the transplanting cup is pierced into the field scene, so that the pot seedling is transplanted into the field scene.
Japanese Utility Model Publication No. 5-95236

  However, when the structure of the seedling transplanter described in Patent Document 1 is applied as it is to a working machine for planting a bulb, the bulb located at the rotary pot is dropped and supplied to the transplanting cup at the raised position. As a result, the bulb does not roll up in the transplant cup, for example, because the bulb rolls in the transplant cup, or the bulbs are not aligned in the same direction. Sometimes. As described above, it is considered that it is difficult to plant a large number of bulbs in a row in the field with the planting postures and orientations of the bulbs reliably aligned.

  Accordingly, the present invention provides a bulb planting machine capable of planting a large number of bulbs in a row so as to reliably align the planting posture and orientation while reducing the burden on the operator. It is a subject.

  In order to solve this technical problem, the invention according to claim 1 is a method for holding a bulb such as seed garlic in a predetermined posture on a self-propelled traveling machine equipped with a power source such as an engine. A bulb planting machine provided with a bulb planting apparatus, wherein the bulb planting apparatus includes gripping means for detachably holding the bulb, and the gripping means is interlocked with a forward movement of the traveling machine body. The position of the receiving means when receiving the bulb at the tip of the gripping means by the power from the power source and the planting position when the tip is stabbed into a farm scene, the posture is moved intermittently, The gripping means is configured to face the tip portion toward a bulb supply portion behind the bulb planting device in the traveling machine body in the receiving posture.

  According to a second aspect of the present invention, in the bulb planter according to the first aspect, the bulb planting device includes a laterally supported horizontal shaft that is pivotally supported by the traveling machine body, and the traveling machine body. And a movable shaft disposed below the lateral support shaft so as to be movable up and down via a suspension support pivotally mounted on the left and right sides of the lateral support shaft. In conjunction with the forward movement, it is configured to rotate intermittently around its own axis by the power from the power source, and the movable shaft is suspended from the suspension support rod so as to be rotatable around its own axis. The horizontal support shaft and the movable shaft are moved up and down while the movable shaft rotates about its own axis in conjunction with the intermittent rotation of the horizontal support shaft via an interlocking link mechanism that connects the two. The gripping means is mounted so as to rotate integrally with the longitudinal middle portion of the movable shaft. Is that is attached.

  According to a third aspect of the present invention, in the bulb planter according to the first or second aspect, at least three grips that are movable in a closing direction that can be opened and closed and grip the bulbs are provided at the tip of the gripping means. A claw is provided, and the gripping means is provided with a release member that opens and rotates the group of the gripping claws against the urging force in the planting posture.

  According to the structure of the first aspect, the operator moves the traveling machine body forward along the ridges of the field, and places a bulb such as seed garlic at a fixed planting posture or orientation at the tip of the gripping means in the receiving posture. Since the gripping means can be intermittently switched and moved from the receiving position to the planting position by the power from the power source, the other bulbs previously planted in a line are arranged. Thus, the bulbs that are detachably gripped by the gripping means can be planted in the planting location of the cocoon. As a result, the operator can engage in the bulb planting work without bending his / her waist and manually planting it, so that the burden on the operator during planting can be reduced, There is an effect that the efficiency can be improved.

  At this time, since the gripping means is configured to face the bulb supply unit behind the bulb planting device in the traveling machine body in the receiving posture, The person can grasp the bulb smoothly at the tip of the grasping means while confirming the posture and orientation of the bulb to be planted. Therefore, this makes it possible to remarkably reduce bulb planting mistakes, so that a large number of bulbs can be aligned in the correct posture and orientation and can be planted in rows in a row of fields efficiently. Play.

  According to the configuration of claim 2, the bulb planting device for holding the bulb in a predetermined posture and planting it in the field has a mechanical configuration. Compared to the case where cylinders or electronic controls are used, the structure is simple and the number of parts is small, it is difficult to break down, and the manufacturing cost is low. There is an effect that can be done.

  According to the configuration of claim 3, the tip of the gripping means is provided with at least three gripping claws that can be opened and closed and urged in the closing direction to grip the bulb. Until the posture is reached, the bulbs to be planted with the plurality of grasping claws can be held in a state where they cannot fall. As a result, there is almost no risk that the posture and orientation of the bulb detachably held by the gripping claws will change when the gripping means is in the receiving posture, and it will contribute to improving work efficiency more effectively. There is an effect that can be done.

  In addition, the gripping means is provided with a release member that opens and rotates the group of gripping claws against the biasing force in the planting posture, so that the bulb held by the gripping claws The planting operation can be performed automatically, and it is possible to further contribute to reducing the burden on the worker during the planting operation.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 8).

  1 is a schematic side view of a bulb planting machine to which the present invention is applied, FIG. 2 is a rear view, FIG. 3 is a plan view, FIG. 4 is a schematic perspective view of a gripping means, and FIGS. It is explanatory drawing which showed the operation | movement aspect typically.

  As shown in FIGS. 1 to 3, a traveling machine body 1 of a bulb transplanter to which the present invention is applied includes a machine body frame 2 that constitutes the framework and a machine body cover 3 that covers the machine body frame 2. The traveling machine body 1 is supported from below by a pair of left and right front wheels 4 and 4 and a pair of left and right rear wheels 5 and 5. Mounted on the front of the body frame 2 are an engine 6 as a power source and a transmission case 7 for appropriately shifting the output from the engine 6 and transmitting it to the left and right front wheels 4, 4. The power source is not limited to the engine 6 and may be an electric motor or the like.

  As shown in FIG. 3, the rear portion of the traveling machine body 1 has a shape recessed in a substantially U shape so as to open backward in plan view. The steering handle 7 protruded rearward from the upper part of the traveling machine body 1 faces the above-described recess in plan view. Therefore, the dent portion serves as a control portion 8 in which the body of the operator who controls the traveling machine body 1 is accommodated. A seed box 9 for accommodating a bulb is arranged in the vicinity of the steering handle 7 on the upper surface of the traveling machine body 1.

  A bulb planting device 11 for holding a bulb such as a seed garlic in a predetermined posture and planting it in a farm field is mounted at a substantially central portion of the traveling machine body 1. The bulb planting device 11 of this embodiment includes a pair of left and right longitudinal support shafts 12 pivotally supported with respect to a pair of left and right upper frames 2a, 2a in the body frame 2, and a pair of left and right in the body frame 2. A pair of suspension support rods 13 and 13 pivotably mounted on the left and right sides of the rear vertical frames 2b and 2b, and can be moved up and down below the lateral support shaft 12 via both suspension support rods 13 and 13. , A pair of left and right interlocking link mechanisms 15, 15 for connecting the lateral support shaft 12 and the movable shaft 14, and a gripping arm 16 as a gripping means fixed to the midway portion of the movable shaft 14. And.

  The lateral support shaft 12 is configured to intermittently rotate about its own axis (clockwise in FIGS. 1 and 5 to 7) by the power from the engine 6 in conjunction with the forward movement of the traveling machine body 1. . That is, two sprockets 21 and 22 are attached to a portion of the one end portion of the lateral support shaft 12 on the inner side (left and right center side) of the upper frame 2a. The inner transmission sprocket 21 of the sprockets 21 and 22 is fixed so as to rotate integrally with the lateral support shaft 12. The outer neutral sprocket 22 is fitted to the lateral support shaft 12 so as not to be laterally displaced and to be freely rotatable.

  An endless chain 25 is wound around a neutral sprocket 22 on the lateral support shaft 12 and an output sprocket 24 fixed to an output shaft 23 that protrudes horizontally outward from one side of the transmission case 7. A plurality of transmission chain portions 26 having a predetermined length that can only be wound around the transmission sprocket 21 are attached to one side surface (the side surface on the left and right center side) of the chain 25 at equal intervals along the circumferential direction (longitudinal direction). ing.

  Thereby, the branching power from the engine 6 causes the neutral sprocket 22 to freely rotate (idle) from the output shaft 23 of the mission case 7 via the chain 25. When the transmission chain portion 26 of the chain 25 is not wound around the transmission sprocket 21 (see FIGS. 2, 3 and 5), power is not transmitted to the lateral support shaft 12, so the lateral support shaft 12 is stopped ( Neutral state). When the circulating movement of the chain 25 proceeds and the transmission chain portion 26 meshes with the transmission sprocket 21 (wound), the branching power from the engine 6 is transmitted to the lateral support shaft 12, and the transmission chain portion 26 is transmitted to the transmission sprocket 21. The side support shaft 12 is intermittently rotated about its own axis only while it is engaged with each other.

  In this embodiment, the transmission sprocket 21 and thus the lateral support shaft 12 can be rotated around their own axes by a predetermined angle range θ (approximately 180 ° in the embodiment, see FIGS. 5 to 7). The length of the transmission chain portion 26 is set. In addition, after one transmission chain portion 26 is separated from the transmission sprocket 21 (see FIG. 7, after one cycle of planting by the bulb planting device 11), the traveling machine body 1 is at a predetermined distance L (in the farm scene A (Ａ)). The arrangement interval of the transmission chain portions 26 in the chain 25 is set so that the next transmission chain portion 26 is wound around the transmission sprocket 21 when it moves forward (corresponding to the bulb planting interval L). Yes.

  The number of transmission chain portions 26 is not limited to a plurality, and may be one. In this case, after one cycle of planting by the bulb planting device 11 is completed, when the traveling machine body 1 moves forward by a predetermined distance L, the transmission chain portion 26 is set to be wound around the transmission sprocket 21 again. .

  Further, the other end portion of the lateral support shaft 12 abuts from below the projecting bar portion 27 projecting from the upper frame 2a toward the left and right center, and the rotation of the lateral support shaft 12 in the counterclockwise direction in FIG. A stopper member 28 for projecting is provided (see FIG. 3).

  The mechanism for transmitting the power from the engine 6 to the lateral support shaft 12 is not limited to the one composed of the sprocket and the chain as described above, and one composed of a pulley and an endless belt, one composed of a shaft and a gear mechanism, etc. It doesn't matter. In addition, an intermittent clutch mechanism that intermittently transmits power to the lateral support shaft 12 in conjunction with the forward movement of the traveling machine body 1 may be employed.

  The two left and right hanging support rods 13 are pivotally mounted at their base end portions (rear end portions) on the left and right outer sides of the rear vertical frame 2b so as to be able to swing up and down with pivot pins. Although not shown in detail, the movable shaft 14 is fixed by fixing support members, which are rotatably fitted to both ends of the movable shaft 14, to the midway portions of the left and right suspension supports 13, 13. Is suspended on both left and right suspension supports 13 and 13 so as to be rotatable about its own axis.

  A horizontal rod 31 that is long on the left and right is mounted between the front ends of the left and right suspension supports 13 and 13 so that the mounting position can be changed along the longitudinal direction of both suspension supports 13 and 13. A hole forming member 32 for forming a hole-like planting location H in the field scene is provided in the middle of the horizontal rod 31. The hole forming member 32 includes a fixed rod 33 extending downward from the horizontal rod 31 and a constricted and substantially conical hole forming tool 34 attached to the tip of the fixed rod 33.

  The positional relationship between the horizontal rod 31 and the movable shaft 14 in a side view is that the horizontal distance between the horizontal shaft 31 and the movable shaft 14 at the time of downward swinging (see the one-dot chain line state in FIG. 1) is the planting interval L. Are set so as to substantially match. The fixing rod 33 is a horizontal rod in a side view so that the hole-forming tool 34 stabs by a predetermined depth (about 10 cm in the embodiment) perpendicularly to the farm scene A by swinging downward of the suspension support rods 13 and 13. 31 is provided so as to be inclined forward and downward downward.

  A first tension spring 35 that urges each suspension support 13 in a direction that always swings upward is mounted between the middle part of each suspension support 13 and the corresponding upper frame 2a.

  The positional relationship between the hole forming member 32 and the movable shaft 14 (gripping arm 16) in side view, and hence the planting interval L, is adjusted by changing the mounting position of the horizontal rod 31 with respect to the suspension support rods 13 and 13. It is configured to be able to. Further, in this embodiment, the movable shaft 14, the horizontal rod 31, and the gripping arm 16 are configured not to interfere with the body frame 2 when both the suspension support rods 13 and 13 swing up and down.

  The pair of left and right interlocking link mechanisms 15 and 15 are for associating the movable shaft 14 so as to rotate about its own axis and move up and down in conjunction with the intermittent rotation of the lateral support shaft 12. Both interlocking link mechanisms 15 and 15 of this embodiment are provided symmetrically with respect to the left and right of the lateral support shaft 12 and the movable shaft 14.

  Each interlocking link mechanism 15 includes a large-diameter disk-shaped upper rotating plate 41 fixed to the end of the lateral support shaft 12, and a small-diameter disk-shaped lower rotating plate 42 fixed to the end of the movable shaft 14. The vertical link rod 43 that connects these rotary plates 41 and 42 to each other is formed. Therefore, the movable shaft 14 positioned below the horizontal support shaft 12 is supported not only by the pair of left and right suspension support rods 13 and 13 but also by the left and right link rods 43 and 43. The upper and lower ends of the link rod 43 are pivotally supported by pivot pins 44 and 45 on the outer peripheral portions of the corresponding rotating plates 41 and 42 so that the upper and lower rotating plates 41 and 42 can be rotated in the same direction. It is pivotally attached.

  Between the lower end portion of the link rod 43 and the middle portion of the suspension support rod 13 corresponding thereto, the upper and lower rotary plates 41 and 42 are rotated counterclockwise in FIGS. 1 and 5 to 7. Thus, a second tension spring 46 that urges the link rod 43 in the pulling direction is mounted.

  The lateral support shaft 12 so that the rotational phase position of the upper pivot pin 44 relative to the upper rotational plate 41 moves from the uppermost phase position (see the solid line state in FIG. 1 and FIG. 5) to the intermediate phase position (see FIG. 6). Is rotated clockwise by a predetermined angle (θ / 2≈90 ° in the embodiment), the gripping arm 16 fixed to the movable shaft 14 via the link rod 43 and the lower rotating plate 42 is moved to the operator. From the receiving posture (see the solid line state in FIG. 1 and FIG. 5) inclined rearward and upward toward the control unit 8 serving as a bulb supply unit, the tip portion (a gripping claw 54 described later) is opposed to the farm scene A. The posture is switched so as to be in a vertically downward facing posture (see FIG. 6).

  The lateral support shaft 12 is moved clockwise by a predetermined angle (in the embodiment, θ) so that the rotational phase position of the upper pivot pin 44 is moved from the intermediate phase position (see FIG. 6) to the lowest phase position (see FIG. 7). / 2≈90 °), the entire movable shaft 14 is moved downward by the vertical movement distance D (see FIGS. 6 and 7) of the upper pivot pin 44 due to the rotational movement about the lateral support shaft 12. Therefore, the gripping arm 16 moves downward while maintaining the posture in which the gripping claw 54 faces downward against the tension biasing force of the first and second tension springs 35 and 46. In other words, the gripping arm 16 has a planting posture in which the gripping claws 54 pierce the planting location H of the farm scene A previously formed by the hole forming tool 34 from the facing posture shown in FIG. 7) to move down.

  At the same time, the pair of left and right suspension supports 13, 13 swing downward as the movable shaft 14 moves downward, so that the hole forming member 32 provided on the distal end side of both the left and right suspension supports 13, 13 The hole forming tool 34 is pierced from the planting location H to the front location H by the planting interval L in the farm scene A (see FIGS. 1 and 7).

  When one cycle of planting by the bulb planting device 11 is completed and the transmission chain portion 26 of the chain 25 is separated from the transmission sprocket 21, the power transmission to the lateral support shaft 12 is interrupted. Then, the suspension support 13 is swung upward by the tension biasing force of the first tension spring 35, and the upper and lower rotary plates 41, 42 are shown in FIGS. 6 and 7 by the tension biasing force of the second tension spring 46. By pulling the link rod 43 so as to rotate in the clockwise direction, the entire movable shaft 14 moves upward by the movement distance D, and the gripping arm 16 is viewed from the one-dot chain line state of FIG. 1 and the planting posture shown in FIG. 6. Move upward to switch to the facing posture shown in FIG. At this time, the lateral support shaft 12 moves the link rod 43 so that the rotational phase position of the upper pivot pin 44 relative to the upper rotational plate 41 is moved from the lowest phase position in FIG. 7 to the intermediate phase position in FIG. Through a predetermined angle (in the embodiment, θ / 2≈90 °).

  Thereafter, the grip arm 16 is further pulled by pulling the link rod 43 so that the upper and lower rotary plates 41 and 42 are rotated counterclockwise as shown in FIGS. 5 and 6 by the tensile biasing force of the second tension spring 46. 6 from the opposite posture of FIG. 6 to the solid line state of FIG. 1 and the receiving posture of FIG. 5, and the pivot phase position of the upper pivot pin 44 is changed from the intermediate phase position of FIG. 6 to the solid line state of FIG. The lateral support shaft 12 is rotated counterclockwise by a predetermined angle so as to move to the uppermost phase position in FIG. 5, and the original state of FIG. 5 is restored.

  When the horizontal support shaft 12 is rotated counterclockwise until the rotational phase position of the upper support pin 44 reaches the uppermost phase position, the stopper of the horizontal support shaft 12 is provided on the protruding bar portion 27 of the upper frame 2a. Since the member 28 hits from below, the lateral support shaft 12 and hence the grip arm 16 of the movable shaft 14 do not rotate further counterclockwise.

  As shown in detail in FIG. 4, the gripping arm 16 fixed to the midway portion of the movable shaft 14 is slid along a fixed arm 51 extending in a direction intersecting the movable shaft 14 and the longitudinal direction of the fixed arm 51. A sliding rod 52 that is movably fitted, and a support bar 53 (six in the embodiment) that is provided on the outer periphery of the sliding rod 52 at an appropriate interval along the circumferential direction and extends in parallel with the fixed arm 51. ) And the substantially n-shaped gripping claws 54 (six in the embodiment) made of an elastic metal wire attached between the respective support bars 53 and the distal ends of the fixed arms 51.

  Each gripping claw 54 is connected to the ring portion of the gripping claw 54 and the ring portion at the tip of the support bar 53 corresponding to the gripping claw 54, and is elastic in its radial direction when viewed from the extending direction of the fixed arm 51. It can be opened and closed (wide and narrow). A compression spring 55 that presses and urges the sliding rod 52 in a direction away from the movable shaft 14 is fitted on the outer peripheral portion of the fixed arm 51 between the movable shaft 14 and the sliding rod 52. The compression spring 55 constantly presses and urges the sliding rod 52 in the direction away from the movable shaft 14, so that the group of gripping claws 54 is closed and turned inward in the radial direction when viewed from the extending direction of the fixed arm 51. Maintained.

  In this case, the apical bud is pressed first toward the tip of the gripping arm 16 (the region surrounded by the plurality of gripping claws 54) and the bulb to be planted against the elasticity of the gripping claws 54. By fitting into the region, the bulb is held in a group of gripping claws 54 so that it cannot fall.

  As shown in FIGS. 1 and 5, the gripping arm 16 in the receiving posture is inclined rearward and upward so that each gripping claw 54 at the tip of the gripping arm 16 faces the control unit 8 of the traveling machine body 1. Is provided. In other words, the mounting angle of the gripping arm 16 with respect to the movable shaft 14 and the length thereof are determined from the control unit 8 in the state where the gripping arm 16 is in a rearward and upward receiving posture (see the solid line state in FIG. 1 and FIG. 5). It is set so that the hand can reach the part of the gripping claw 54 of the part. Therefore, in this embodiment, the control unit 8 of the traveling machine body 1 corresponds to the bulb supply unit described in the claims. As shown in FIG. 3, the attachment positional relationship between the hole forming member 32 and the gripping arm 16 is set so as to be positioned on substantially the same straight line along the straight traveling direction of the traveling machine body 1 in plan view.

  The sliding rod 52 and the middle part of the lateral support shaft 12 are connected by a cord member 56 such as a string or a chain as a release member. The cord member 56 extends from the lateral support shaft 12 to the sliding rod 52 in the facing posture so that the cord member 56 is taut when the gripping arm 16 is in the facing posture of FIG. The length is set to approximately the same length as the vertical distance.

  When the gripping arm 16 is in the solid line state of FIG. 1 and the planting posture shown in FIG. 7, by moving the sliding rod 52 relatively with respect to the fixed arm 51 by the rope member 56, The group of gripping claws 54 is configured to open and rotate radially outwardly through the support bars 53 against the radially inward biasing force of the gripping claws 54. Thereby, when the gripping arm 16 is in the planting posture, the bulbs gripped by the group of the gripping claws 54 are dropped and planted in the planting location H of the farm scene A in a predetermined posture.

  From the above, according to the bulb planter of the present invention, the operator moves the traveling machine body 1 forward along the ridge of the farm field, and at the location of the grasping claw 54 of the grasping arm 16 in the receiving posture. 1 in a certain planting posture and orientation, the power of the engine 6 causes the gripping arm 16 to move from the state shown by the solid line in FIG. 1 and the receiving posture shown in FIG. Since the posture can be changed intermittently to the chain line state and the planting posture shown in FIG. 7, the gripping claws 54 are arranged so that the planting posture and orientation are aligned with the other bulbs previously planted in a line. The grasped bulb can be planted in the planting location H of the farm scene A (畝). As a result, the operator can engage in the bulb planting work without bending his / her waist and manually planting it, so that the burden on the operator during planting can be reduced, Efficiency can be improved.

  In addition, the gripping arm 16 in the receiving posture is inclined rearward and upward so that each gripping claw 54 at the tip of the gripping arm 16 faces the control unit 8 of the traveling machine body 1. The bulb can be smoothly gripped by the gripping claws 54 of the gripping arm 16 while confirming the posture and orientation of the bulb taken out from 9. Therefore, according to the bulb planting machine of the present invention, it is possible to remarkably reduce bulb planting mistakes. Therefore, a large number of bulbs are aligned in an accurate posture and orientation, and are efficiently aligned in the field A (畝). They can be planted side by side.

  The bulb planting device 11 of this embodiment includes a laterally supported horizontal shaft 12 that is pivotally supported by the traveling machine body 1 and a movable shaft 14 that can be moved up and down via suspension supports 13 and 13. In conjunction with the intermittent rotation of the lateral support shaft 12 by the power from the engine 6, the movable shaft 14 is linked via the interlocking link mechanisms 15 and 15 so that the movable shaft 14 rotates about its own axis and moves up and down. Since the gripping arm 16 is fixed to the middle part of the shaft 14 in the longitudinal direction, the structure of the bulb planting device 11 is, for example, using a pneumatic or hydraulic cylinder or using electronic control. Compared to the case of using a new one, the structure is simple and the number of parts is small, and it is difficult to break down. In addition, the manufacturing cost is low.

  The grip arm 16 is provided with a plurality of gripping claws 54 that can be opened and closed and urged in a closing direction to grip the bulb. The bulb to be planted by the gripping claws 54 can be held so as not to fall. Thereby, there is almost no possibility that the posture and orientation of the bulb detachably gripped by the gripping claws 54 will change when the gripping arm 16 is in the receiving posture or the facing posture, and the work efficiency is improved more effectively. Can contribute.

  Further, the gripping arm 16 is a string, chain, or the like as a release member that opens and rotates the group of gripping claws 54 outwardly in the radial direction against the urging force of the gripping claws 54 inward in the planting posture. The rope member 56 is connected to the lateral support shaft 12. Due to the presence of the rope member 56, the gripping claw 54 can be opened and rotated in conjunction with the operation of further moving the movable shaft 14 downward when the gripping arm 16 is in the facing posture. The planting operation of the bulb that has been performed can be performed automatically (simplely), which can further contribute to reducing the burden on the worker during the planting operation.

  In addition, although said embodiment demonstrated the walk-type bulb | plant planting machine, it cannot be overemphasized that it can apply also to a riding-type bulb | ball planting machine, and it is applicable also when planting in multiple or more. In addition, examples of bulbs that can be planted with the bulb planter of the present invention include rod-shaped seed balls such as garlic, seed balls such as raccoon, and seed baskets such as taro. The configurations of the bulb planting device and the gripping means are not limited to those of the above-described embodiment, and can be embodied in various forms. Furthermore, at least three gripping claws provided at the tip of the gripping arm as gripping means are sufficient so that the bulb can be gripped from three directions (see FIG. 8).

It is a schematic side view of a bulb planting machine. It is a schematic rear view of a bulb planting machine. It is a schematic plan view of a bulb planting machine. It is a schematic perspective view of a holding means. It is explanatory drawing which showed typically the operation | movement aspect of a bulb planting apparatus, and is a figure when a holding means is a receiving attitude | position. It is explanatory drawing which showed typically the operation | movement aspect of a bulb planting apparatus, and is a figure of the state which the holding means rotated downward about the movable axis, and opposes the farm field. It is explanatory drawing which showed typically the operation | movement aspect of a bulb planting apparatus, and is a figure when a holding means is a planting attitude | position. It is the schematic perspective view which showed the other example of the holding means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Airframe frame 6 Engine as a power source 8 Steering part as a bulb supply part 11 Bulb planting device 12 Lateral support shaft 13 Hanging support rod 14 Movable shaft 15 Interlocking link mechanism 16 Grasping arm 25 as a grip means 25 Chain 26 Transmission chain portion 32 Hole forming member 35 First tension spring 41 Upper rotating plate 42 Lower rotating plate 43 Link rod 44 Upper pivot pin 45 Lower pivot pin 46 Second tension spring 54 Grasp claw 56 Strip as release member Element

Claims (3)

A bulb planting machine equipped with a bulb planting device for planting in a field while holding a bulb such as seed garlic in a predetermined posture on a self-propelled traveling machine mounted with a power source such as an engine,
The bulb planting device includes gripping means for detachably holding the bulb,
The gripping means is interlocked with the forward movement of the traveling machine body, and receives a bulb at the tip of the gripping means by power from the power source and a planting attitude when the tip is stabbed into a farm scene. And is configured to move intermittently between postures,
The gripping means is configured to allow the distal end portion to face a bulb supply unit behind the bulb planting device in the traveling body when in the receiving posture. Attached machine. The bulb planting device includes a lateral support shaft that is horizontally supported by the traveling machine body so as to be pivotable, and a suspension support that is pivotally attached to both the left and right sides of the traveling machine body. And a movable shaft arranged to be movable up and down below the lateral support shaft,
The lateral support shaft is configured to intermittently rotate about its own axis by power from the power source in conjunction with the forward movement of the traveling machine body, and the movable shaft is rotatable about its own axis. In the state, it is suspended by the suspension support rod,
The horizontal support shaft and the movable shaft are moved up and down while the movable shaft rotates about its own axis in conjunction with the intermittent rotation of the horizontal support shaft via an interlocking link mechanism that connects them. While related to
2. The bulb transplanter according to claim 1, wherein the gripping means is attached so as to rotate integrally with a longitudinal middle portion of the movable shaft.   At the tip of the gripping means, there are provided at least three gripping claws that can be opened and closed and biased in the closing direction to grip the bulb, and the gripping means receives the biasing force in the planting posture. 3. A bulb planter according to claim 1 or 2, wherein a release member is provided for opening and rotating the group of gripping claws.

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