JP2014068603A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter having a fertilizer conveyance member provided separately from a reserve seedling frame, on which the fertilizer can be mounted regardless of a state of a field edge and seedlings and fertilizer can be mounted efficiently.SOLUTION: A seedling transplanter includes: a seedling planting part 16 provided on a machine body so as to be freely raised and lowered; a fertilization unit 17 provided for supplying fertilizer to seedlings; an attachment member 101 provided on a front part of the machine body, for attaching reserve seedling frames 19; a support member 102 provided in the attachment member 101, which directs toward the outside of the machine body; a first rotation fulcrum member 103 provided in the support member 102; a rotating member 104 provided, which rotates about the first rotation fulcrum member 103 in a front and back direction of the machine body; and a fertilizer mounting member 105 provided in the rotating member 104. When the rotating member 104 is rotated to the front or lateral side of the machine body, the fertilizer mounting member 105 is set to a loading position at which it is protruded towards the front or lateral side of the machine body, and when the rotating member 104 is rotated to the rear side of the machine body, the fertilizer mounting member 105 is set to a restocking position at which it is close to the fertilization unit 17.

Description

  The present invention relates to a seedling transplanting machine including a spare seedling frame on which a spare seedling is loaded on a side portion of an airframe having a traveling device, and a fertilizer placement conveyance table.

In the seedling transplanter equipped with a seedling planting part for planting seedlings in the farm field at the rear part of the machine body and a fertilizer supplying device for supplying fertilizer to the seedlings planted by this seedling planting part, a plurality of preliminary seedlings are mounted on the side part of the machine body 2. Description of the Related Art A seedling transplanter provided with a spare seedling frame composed of members is known.
In the following Patent Document 1 or 2, a plurality of preliminary seedling mounting members are attached to a link mechanism constituted by one long main link arm and two short front and rear sub link arms, and the link mechanism is rotated. The plurality of preliminary seedling mounting members in a stacked form in which the plurality of preliminary seedling mounting members are overlapped in a plan view and a deployment form in which the plurality of preliminary seedling mounting members are deployed in a substantially straight line in the front-rear direction. A seedling transplanter configured to switch seedling placement members is disclosed.

  Therefore, in the configuration described in Patent Document 1 or 2, it is possible to switch the form of the plurality of preliminary seedling placement members and improve the efficiency of the seedling loading work from outside the field and the seedling replenishment work to the seedling planting part. In addition, it is possible to stabilize the seedling loading posture during movement.

  In particular, when there is a water channel at the end of the field, or when the soil at the end of the field is poor and it is difficult for the worker to approach, the operator can forcibly extend the body and arms to replenish the seedling by protruding the spare seedling frame forward. Therefore, the labor of the operator is greatly reduced, the time required for loading seedlings is shortened, and the work efficiency is improved.

JP 2009-232809 A JP 2009-240224 A

In the seedling transplanting machines of Patent Documents 1 and 2, since the fertilizer is supplied to the seedling planted by the fertilizer application apparatus, it is necessary to perform not only the seedling replenishment work but also the fertilizer replenishment work. For this reason, when the spare seedling is loaded on the spare seedling frame, the spare fertilizer is also loaded on the machine body, and when the fertilizer stored in the fertilizer application decreases, the fertilizer can be replenished without returning to the field edge. .
However, unlike seedlings, the fertilizer transport member that loads fertilizer from outside the field and transports it to the machine body is not provided in the seedling transplanters of Patent Documents 1 and 2, and the worker does not apply fertilizer heavier than the seedling. There is a problem that it is necessary to carry from the field end to the machine body, and the labor of the worker increases accordingly.
Especially in situations where it is difficult to load fertilizer directly into the machine from the field edge, such as when there is a waterway at the field edge or when the soil quality at the field edge is poor, the worker enters the field with heavy fertilizer and enters the mud. You have to move to the aircraft in an unstable state where you can take your feet.
Although it is possible to load fertilizer on the reserve seedling frame, the spare seedling frame is assumed to be loaded with seedlings, so if it is used for loading heavy fertilizer, the load on the components of the reserve seedling frame However, there is a problem that the durability is deteriorated more quickly than usual and is easily damaged.
If the amount of fertilizer is reduced, the above problem does not occur. However, since the time required for loading the fertilizer becomes longer, there is a problem that the work efficiency is greatly reduced.
It is an object of the present invention to provide a seedling transplanting machine in which a fertilizer conveying member is provided separately from a spare seedling frame, and fertilizer can be loaded regardless of the state of the field edge, and the seedling and fertilizer loading work can be efficiently performed. Objective.

The above-mentioned problem of the present invention is solved by the following means.
The present invention according to claim 1 is provided with a seedling planting portion (16) for planting seedlings in a field on the machine body so as to be movable up and down, and a fertilizer applying device (17 ), A spare seedling frame (19) for loading spare seedlings, a fertilizer placement member (105) for loading fertilizer, and a loading work position for projecting the fertilizer placement member (105) from the machine body A seedling transplanting machine characterized in that it can be switched between a replenishment work position approaching the fertilizer application device (17).
According to the present invention, a mounting member (101) for mounting the spare seedling frame (19) is provided at the front of the machine body, and a support member (102) facing the outside of the machine body is provided on the mounting member (101). The support member (102) is provided with a first rotation fulcrum member (103), and a rotation member (104) that rotates about the first fulcrum member (103) in the longitudinal direction of the machine body is provided. When the fertilizer placing member (105) is provided on the member (104) and the turning member (104) is turned to the front side or the side of the body, the fertilizer placing member (105) is moved to the front side or the side from the body. When the rotation member (104) is rotated to the rear side of the machine body, the fertilizer placement member (105) becomes a replenishment operation position that approaches the fertilizer application (17). The seedling transplanter according to claim 1, wherein the seedling transplanter is configured. It was.
According to a third aspect of the present invention, the mounting member (101) is provided with a second fulcrum member (106) that serves as a rotation fulcrum of the support member (102), and the support member (102) faces the front side of the body. When rotated, the fertilizer placement member (105) is placed at the loading operation position on the inner side or the outer side of the machine body from the spare seedling frame (19), and the support member (102) is turned toward the side of the machine body. In this case, the seedling transplanting machine according to claim 1 or 2, wherein only one side end of the fertilizer placing member (105) is in a loading operation position protruding from the machine body.
In the present invention according to claim 4, a cylindrical member (114) is provided at a lower portion of the fertilizer placement member (105), a concave portion (114a) is formed in the cylindrical member (114), and enters the concave portion (114a). A restriction projection (115) for restricting the rotation of the fertilizer placement member (105) is provided, and when the fertilizer placement member (105) is lowered, the restriction projection (115) enters the recess (114a). And the fertilizer placing member (115) is configured to be rotatable, and a push-up member (117) for pushing the fertilizer placing member (105) upward is provided below the tubular member (114). A seedling transplanter according to claim 2 or 3, wherein the seedling transplanter is characterized.
According to the fifth aspect of the present invention, the left and right drawing members (200, 200) for forming straight lines for straight advancement in the field are provided on both the left and right sides of the machine body so as to be movable up and down. Left and right switching actuators (201, 201) are respectively provided, and when the fertilizer placement member (105) is lowered to a position where it can be rotated, a lowering detection member (118) that comes into contact with the tubular member (114). ), And when the lowering detection member (118) comes into contact with the cylindrical member (114), the left and right switching actuators (201, 201) are operated to lower the left and right drawing members (200, 200). A seedling transplanter according to claim 4, wherein the seedling transplanter is characterized.
According to a sixth aspect of the present invention, the rotating member (104) is provided with a third fulcrum member (109) serving as a rotating fulcrum of the fertilizer placing member (105), and the fertilizer placing member (105) is moved back and forth. It is comprised so that rotation in a direction is possible, and when the said fertilizer mounting member (105) is rotated, it comprised so that it could move to the position which overlaps with a reserve seedling frame (19) by planar view, It was comprised. A seedling transplanter according to any one of the above.

  The present invention according to claim 7 is configured such that, in the fertilizer placement member (105), the fertilizer is not supported on the outer side of the machine body from the position along the rotation trajectory of the fertilizer placement member (105). The seedling transplanter according to any one of claims 1 to 6, wherein the seedling transplanter is provided.

According to the first aspect of the present invention, since the fertilizer placing member (105) can be switched to the loading work position protruding from the machine body, it is necessary for the worker to get on when loading the fertilizer from the field end. Therefore, the labor of the worker is reduced and the efficiency of the fertilizer loading work is improved.
In particular, in a place where there is a water channel or the like at the end of the field, the operator does not need to pay attention to the scaffold, and the work efficiency is further improved.
And since the fertilizer placement member (105) can be switched to the replenishment work position approaching the fertilizer application device (17), the labor for carrying the fertilizer from the fertilizer placement member (105) to the fertilizer application device (17) is greatly reduced. As a result, the work efficiency is improved and the labor of the worker is reduced.
In addition, since the fertilizer can be loaded on the fertilizer placing member (105) during planting of seedlings, it is not necessary to load the fertilizer on the machine body, and the operator can easily move on the machine body. , Work efficiency is improved.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, when the rotating member (104) is rotated toward the front side or the side of the body, the fertilizer placing member (105). Since it becomes the loading work position that protrudes from the machine body, it is not necessary for the worker to get out when loading fertilizer from the field edge, reducing the labor of the worker and improving the efficiency of loading work of fertilizer To do.
Further, when the rotating member (104) is rotated to the rear side of the machine body, the fertilizer placing member (105) becomes the replenishment work position. Therefore, labor for carrying the fertilizer from the fertilizer placing member (105) to the fertilizer application device (17). Is greatly reduced, the work efficiency is improved and the labor of the worker is reduced.
According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the support member (102) rotates in the front-rear direction around the second fulcrum member (106). As a result, when the support member (102) is rotated to the front side of the machine body, the fertilizer placement member (105) is placed on the inner side of the machine body or on the outer side of the machine body from the spare seedling frame (19). Since the fertilizer can be loaded at a position avoiding the frame (19), the work efficiency is improved.
Further, when the support member (102) is rotated to the side of the machine body, only one side end portion of the fertilizer placement member (105) becomes a loading work position protruding toward the machine body side, so that the fertilizer is loaded. Since the placement member (105) can be brought close to the field edge without contacting an obstacle such as a wall, the efficiency of the fertilizer loading operation is improved and the fertilizer placement member (105) is prevented from being damaged. .
According to the present invention described in claim 4, in addition to the effect of the invention described in claim 2 or 3, when the restricting projection (115) enters the recess (114a) formed in the cylindrical member (114). Since the rotation of the fertilizer placing member (105) is restricted, the fertilizer placing member (105) is prevented from rotating during planting of seedlings or traveling on the road. (105) is prevented from being damaged by contact with an obstacle.
When the fertilizer placement member (105) is lowered, the regulating member (115) is not positioned in the recess (114a) formed in the cylindrical member (114), and the fertilizer placement member (105) can be rotated. Therefore, since the fertilizer placement member (105) is automatically switched to the rotatable state by the weight of the loaded fertilizer, the unlocking operation is not required, and the work efficiency is improved.
According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the invention, the lowering detection member (118) indicates that the fertilizer placement member (105) has been lowered to a position where it can rotate. When detected, the left and right switching actuators (201, 201) are actuated to automatically lower the left and right drawing members (200, 200), so that the fertilizer placement member (105) is placed between the loading work position and the replenishment work position. When the switching operation is performed, the operation of retracting the left and right drawing members (200, 200) from the rotation trajectory becomes unnecessary, and the work efficiency is improved.
Moreover, since it can prevent that a fertilizer mounting member (105) and left and right drawing members (200,200) contact, damage to a fertilizer mounting member (105) and right and left drawing members (200,200) is prevented. In addition, since the fertilizer loaded on the fertilizer placement member (105) is prevented from falling due to the impact of contact, the work of picking up the fertilizer becomes unnecessary, and the work efficiency is improved.
According to the present invention described in claim 6, in addition to the effect of the invention described in claim 2 or 5, the fertilizer placing member (105) can be configured with the third fulcrum member (109) as a pivot fulcrum. At the same time, when the fertilizer placement member (105) is rotated, the fertilizer placement member (105) and the spare seedling frame (19) are moved to a position where they overlap in a plan view. Since the fertilizer placement member (105) is prevented from blocking the front and side of the machine body to be operated, the operator can easily get on and off the machine body, and the work efficiency is improved.
According to this invention of Claim 7, in addition to the effect of the invention of any one of Claims 1 to 6, in the outer side of the body than the position along the rotation trajectory of the fertilizer placement member (105). Since the fertilizer is not supported, when the fertilizer placement member (105) is moved between the loading work position and the replenishment work position, the outer end of the fertilizer placement member (105) becomes an obstacle such as a wall. Since it becomes difficult to contact, damage to the fertilizer placement member (105) is prevented, and the fertilizer is prevented from falling due to the impact of contact.
In addition, when a fertilizer bag enclosing fertilizer is loaded on the fertilizer placement member (105), the notched portion does not support the fertilizer bag, so that a portion of the fertilizer bag hangs downward. When the part of the fertilizer bag is hung down after the part is desired above the fertilizer application device (17), the fertilizer easily flows down, and the efficiency of the fertilizer replenishment work is improved.

Side view of a seedling transplanter with a stacking configuration for the spare seedling placement part Side view of a seedling transplanter with the preliminary seedling placement section deployed Top view of the seedling transplanter with the preliminary seedling placement part as a stacked form Top view of the seedling transplanter with the preliminary seedling placement part deployed Front view of a seedling transplanter with a stacking configuration for the spare seedling placement part Side view of the spare seedling placement part in a stacked form, seen from the outside of the seedling transplanter Side view of the spare seedling placement part in a stacked form, as seen from the operation part side of the seedling transplanter Side view of the spare seedling placement part in the expanded form, seen from the outside of the seedling transplanter Side view of the spare seedling placement part in the deployed form, as seen from the operating part side of the seedling transplanter Side view of the preliminary seedling placement part in a stacked form, provided with a stop member Side view of the main part of the preliminary seedling placement part in a stacked form showing the arrangement of the stop member Side view of the preliminary seedling placement part in a deployed form, provided with a stop member Side view of the main part of the preliminary seedling placement part in the expanded form showing the arrangement of the stop member (A) Side view of the main part of the preliminary seedling placement section provided with a front protrusion and a transport auxiliary rotator showing the movement of the loaded seedling (b) Front protrusion and transport auxiliary rotation showing the movement of the loaded seedling Side view of the main part of the preliminary seedling placement part provided with the body (c) Plan view of the main part of the preliminary seedling placement part provided with the front protrusion and the conveyance auxiliary rotating body (d) The front protrusion and the auxiliary rotation body of transfer Enlarged side view of the prepared seedling mounting member Plan view of the pre-seedling placement part in the unfolded form Operation control block diagram of spare seedling placement unit Explanatory drawing showing the structure of the switching unit (A) Side view of main part of switching device for spare seedling placement part (b) Plan view of relevant part of switching device for preliminary seedling placement part Main part plan view showing movement trajectory of fertilizer mounting table Front view of main part of seedling transplanter with fertilizer mounting table The principal part top view which shows the movement locus | trajectory of the fertilizer mounting stand of another structural example The principal part top view which shows the movement locus | trajectory of the fertilizer mounting stand of another structural example Front view of main part of seedling transplanter provided with fertilizer mounting table of another configuration example (A) Bottom view of first and second rotating pins (b) Bottom view of first and second rotating pins of another configuration example (A) Side view of main parts showing first and second rotation pins and first and second rotation stoppers (b) First and second rotation pins and first and second rotation stoppers of another configuration example are shown. Side view of main parts (A) Main part plan view showing the storage position of the fertilizer mounting table (b) Main part plan view showing the replenishment work position of the fertilizer mounting table (A) Main part front view showing the locked state of the rotation locking mechanism of the fertilizer mounting table (b) Main part front view showing the unlocked state of the rotation locking mechanism of the fertilizer mounting table (A) Bottom view of the boss of another configuration example (b) Bottom view of the main support frame of another configuration example provided with a lock protrusion and a lowering stopper Top view of seedling transplanter with line drawing marker (A) Main part front view which shows the lock state of the rotation lock mechanism of the fertilizer mounting base of another structural example (b) Main part front view which shows the lock release state of the rotation locking mechanism of the fertilizer mounting base of another structural example The principal part side view which shows the 1st and 2nd rotation pin and 1st and 2nd rotation stopper of another structural example Block diagram showing each switch and corresponding members The principal part top view of the 1st and 2nd rotation pin The principal part top view which shows the fertilizer mounting stand of another structural example

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a side view of a seedling transplanter according to Embodiment 1 of the present invention when the preliminary seedling placement portion is in a laminated form, that is, in a laminated form in which preliminary seedling placing members are arranged in the vertical direction, and FIG. The side view of the seedling transplanting machine when the preliminary seedling placement portion is in the deployed form, that is, in the deployed form in which the spare seedling placing members are arranged in the front-rear direction, is shown.
FIG. 3 is a plan view of the seedling transplanting machine when the preliminary seedling placement unit is in a stacked form according to the first embodiment, and FIG. 4 is a seedling transplantation when the preliminary seedling placement unit is in a deployed form. A plan view of the machine is shown. FIG. 5 is a partial front view of the seedling transplanter of the first embodiment, and shows a state in which the preliminary seedling placement unit is in a stacked form. The following embodiment is merely an embodiment and does not restrict the scope of patent registration.
In the present specification, the front / rear and left / right direction reference defines the front / rear and left / right reference based on the traveling direction of the vehicle body as viewed from the driver's seat.
As shown in FIGS. 1 to 5, a driver seat 12 is provided at the rear of the floor step 11 in the driver 10 of the vehicle body. A bonnet 13 that covers the engine 210 is provided in front of the floor step 11, and a steering handle 18 that steers the front wheels 14 is provided above the bonnet 13. Right and left auxiliary steps 27 are provided on the left and right outer sides of the floor step 11. In the following, the explanation will focus on the left side of the vehicle body. In FIGS. 1 and 2, 16 is a planting portion attached to the rear side of the vehicle body, 15 is a rear wheel, and 17 is a fertilizer.
Outside the auxiliary step 27 on the left side of the vehicle body, a spare seedling frame 19 configured by providing a plurality of preliminary seedling platforms 20u, 20m, 20d... It is supported by a main support frame 24 and a sub support frame 25 fixed to the part. The base support frame 23 has a lower end bent, and the bent portion goes around the lower side of the auxiliary step 27 and is fixed to the bracket 26 of the vehicle body frame. The main support frame 24 and the sub-support frame 25 that are fixed to the upper end portion of the basic support frame 23 and the front and rear ends thereof are erected substantially vertically.

Further, outside the auxiliary step 27 on the right side of the vehicle body, there is provided a fixed fixed seedling placement unit 28 that is configured not to rotate and on which a spare seedling is placed.
A switching device 21 is fixed to the upper end portion of the main support frame 24, and the main link arm 41 that connects the three preliminary seedling platforms 20u, 20m, and 20d is rotated by the switching device 21, whereby a preliminary seedling frame is obtained. 19 is configured to be switchable between a laminated form and a developed form.
Since the switching device 21 is fixed to the upper end portion of the main support frame 24, it is possible to secure the rotation trajectory of the link mechanism of the preliminary seedling frame 19 while suppressing the vertical length of the main support frame 24. Since it is prevented that the position of the preliminary seedling mounting bases 20u, 20m, and 20d becomes too high and it becomes difficult to load and remove seedlings, work efficiency is improved.
As shown in FIG. 5, the switching device 21 is configured to be covered with a switching unit cover 31 in order to prevent an operator from contacting the semicircular gear 32 constituting the switching device 21.
Since the switching unit cover 31 shown in FIG. 5 is configured to expose the upper portion of the switching actuator 22 that operates the gear 32, the switching device 21 is configured to be compact. It is also possible to form a cover portion on the switching unit cover 31 so as to cover the entire switching actuator 22.
In addition, an empty seed box storage portion 33 for storing an empty seed box, a seedling plate, and the like is fixed to the main support frame 24 and the sub support frame 25 and provided inside the vehicle body. The empty seedling box housing portion 33 is configured by combining metal bars in the present case, but may be configured using other materials. In addition, in FIG. 1 to FIG. 4, illustration of the empty seedling box housing portion 33 is omitted.
By providing the empty seedling box housing part 33, empty seedling boxes and seedling boards can be stored, so that the seedling boxes and seedling boards are blown off by the wind and fall to the field. This eliminates the need for workers to collect and improves work efficiency.
Further, by providing the empty seedling box accommodating portion 33 between the preliminary seedling frame 19 and the bonnet 13, the operator can transfer the seedling box and the seedling scooping plate to the empty seedling box accommodating portion 33 without moving on the vehicle body. Since it can be accommodated, the labor of the operator is reduced.
If the empty seedling box accommodating part 33 is arranged outside the vehicle body, the empty seedling box accommodating part 33 cannot be moved to the wall due to the protrusion of the empty seedling box accommodating part 33, and the distance from the driver to the empty seedling box accommodating part 33 is increased. Therefore, it is reasonable to arrange the seedling box and the seedling plate on the inner side of the vehicle body as shown in the first embodiment. Will improve.
In addition, the vehicle body of the seedling transplanter according to the first embodiment corresponds to an example of the traveling vehicle body of the present invention. The main support frame 24 and the sub support frame 25 correspond to an example of the support member of the present invention. The switching device 21 is an example of the switching device of the present invention, and the switching unit cover 31 is an example of the cover of the present invention. Furthermore, the empty seedling box housing part 33 corresponds to an example of the housing member of the present invention.
Next, the connection configuration between the reserve seedling frame 19 and the switching device 21 and the operation of the reserve seedling frame 19 will be described.
FIG. 6 shows a side view of the preliminary seedling frame 19 in the laminated form of the first embodiment as seen from the outside of the seedling transplanter, and FIG. 7 shows a side view of the spare seedling frame 19 seen from the inside of the seedling transplanter. FIG. 8 shows a side view of the preliminary seedling frame 19 in the unfolded form of the first embodiment as seen from the outside of the seedling transplanter, and FIG. 9 shows a side view seen from the inside of the seedling transplanter.
As shown in FIG. 6, the switching device 21 according to the first embodiment has a front and rear width that falls within the range of the front and rear widths of the preliminary seedling platforms 20u, 20m, and 20d in a side view in the stacked form of the preliminary seedling frames 19. . By making the front-rear width of the switching device 21 shorter than the front-rear width of the spare seedling platforms 20u, 20m, 20d, the switching device 21 protrudes from the front-rear width of the preliminary seedling platforms 20u, 20m, 20d in a stacked configuration. There is no, and it can be set as a compact structure.
In addition, the front-rear width of the switching device 21 may be substantially the same as the front-rear width of the preliminary seedling mounts 20u, 20m, 20d.
As shown in FIGS. 6 and 7, the three preliminary seedling platforms 20 u, 20 m, and 20 d are connected to the main link arm 41 at intervals. The spare seedling stage 20u and the spare seedling stage 20m are connected by a first sub-link arm 42 on the front side, and the preliminary seedling stage 20m and the spare seedling stage 20d are on the second sub-link arm 43 on the rear side. Are connected by

  The preliminary seedling stage 20u is connected to the first sub-link arm 42 via a rotating part 46 so as to be rotatable, and is connected to the main link arm 41 via a rotating part 47 so as to be rotatable.

  The preliminary seedling stage 20m is connected to the first sub-link arm 42 via a rotating part 48 so as to be rotatable, and connected to the main link arm 41 via a freely rotating shaft 45. The second sub link arm 43 is connected to the second sub link arm 43 through a rotating portion 49 so as to be freely rotatable.

  The preliminary seedling stage 20d is connected to the main link arm 41 via a rotating part 50 so as to be rotatable, and connected to the second sub-link arm 43 via a rotating part 51.

  A main rotating shaft 44 that rotatably attaches the main link arm 41 to the front main support frame 24 is provided at a central portion of the main link arm 41 and at a position ahead of the driven rotating shaft 45. .

  The main rotation shaft 44 is an example of the shaft of the present invention, and a portion where the main rotation shaft 44 is connected to the main link arm 41 corresponds to an example of a rotation center portion of the link mechanism of the present invention.

  The second sub link arm 43 is connected to the upper end portion of the sub support frame 25 via a rotating shaft 52 at a portion close to the spare seedling stage 20m, and the second sub link arm 43 is centered on the rotating shaft 52. The two sub link arms 43 are configured to be rotatable.

  The main rotation shaft 44 is configured to rotate by driving the switching actuator 22 of the switching device 21, and the main link arm 41 rotates with the rotation of the main rotation shaft 44. Along with the rotation, the preliminary seedling stage 20u and the preliminary seedling stage 20d connected to both ends thereof are regulated by the first sub-link arm 42 and the second sub-link arm 43, respectively, while maintaining a substantially horizontal state. Move.

  In addition, as the main link arm 41 rotates, the spare seedling table 20m connected by the driven rotation shaft 45 is also substantially horizontal while being regulated by the first sub link arm 42 and the second sub link arm 43. Move while maintaining state.

In the stacked form of the spare seedling frame 19 shown in FIG. 6, when the main link arm 41 rotates counterclockwise, the preliminary seedling stage 20 u moves upward while descending, and moves to the front. After descent, 20d moves backward while ascending. And the reserve seedling frame 19 becomes the expansion | deployment form shown in FIG.
FIG. 15 shows a plan view of the preliminary seedling frame 19 in the unfolded form. Here, illustration of parts other than the reserve seedling frame 19 and the switching device 21 is omitted.

  The main link arm 41, the first sub-link arm 42, and the second sub-link arm 43 are arranged at equidistant positions parallel to the preliminary seedling mounts 20u, 20m, and 20d, as shown in FIG. In the unfolded form, these link arms 41, 42, and 43 are in an overlapping state.

  Moreover, as shown in FIG.5 and FIG.15, it arrange | positions in order of the switching apparatus 21, each link arm 41, 42, 43, the reserve seedling mounting bases 20u, 20m, and 20d toward the vehicle body outer side from the operation part 10 side. Therefore, there is no member that obstructs the movement of the seedlings placed on the preliminary seedling placing stands 20u, 20m, and 20d, and the seedling mat can be easily loaded.

In conventional riding type rice transplanters, a stopper is provided for determining the stop position of the stored seedling placement member, so that each time the spare seedling placement member is switched to the deployed form or the stacked form, the operating state of this stopper is manually changed. There is a problem that the work efficiency is lowered because it is necessary to be released, and there is a problem that the configuration of the preliminary seedling mounting member is complicated because the stopper must be switched between the operating state and the non-operating state.
And when the preliminary seedling placement member is switched to the deployed form, a receiving member is provided to prevent the loaded seedling from falling from the front side and the rear side of the preliminary seedling placement member. Because of the protruding shape, when loading seedlings on the spare seedling mounting member, the operator must load the seedling avoiding the upper part of the receiving member, so the seedling cannot be easily loaded and the efficiency of the seedling replenishment work There is a problem that decreases.
Furthermore, since there is no conveyance auxiliary rotating body or the like for assisting the movement of the seedling between the spare seedling placement members, there is a problem that the labor required for the rearward movement of the seedling increases and the work efficiency decreases.
As shown in FIGS. 10, 12, and 15, a pair of front protrusions 38a1, 38b1, and 38c1 protruding forward at the front ends of the first, second, and third preliminary seedling platforms 20u, 20m, and 20d. Are formed, and rear projecting portions 38a2, 38b2, and 38c2 projecting rearward are formed at the center of the rear end portion, respectively. Accordingly, when the first, second, and third preliminary seedling platforms 20u, 20m, and 20d are in the deployed form, the rear protrusions 38a2 and 38b2 of the preliminary seedling platforms 20u and 20m located on the front side of the machine body are located on the rear side of the machine body. It arrange | positions in the position which overlaps with the front side protrusion parts 38b1 and 38c1 of the reserve seedling stand 20m and 20d which are located in a side view. The front protrusions 38a1, 38b1, and 38c1 are examples of front stoppers, and the rear protrusions 38a2, 38b2, and 38c2 are examples of rear stoppers.
Therefore, when the first, second, and third preliminary seedling platforms 20u, 20m, and 20d are arranged in the front-rear direction, the first, second, and third preliminary seedling platforms 20u, 20m, and 20d are moved forward and backward. Since they can be arranged in the direction, the seedling boxes loaded on the preliminary seedling platforms 20u, 20m, and 20d can be smoothly moved to the rear side, and the work efficiency is improved as compared with the prior art.
Then, the preliminary seedling placement members 20u, 20m, and 20d are switched to the expanded form or the stacked form without switching the front side stopper parts 38a1, 38b1, 38c1 and the rear side stopper parts 38a2, 38b2, 38c2 to the active state or the non-active state. Therefore, it is possible to prevent the configuration of the spare seedling placement members 20u, 20m, and 20d from becoming complicated, and to improve work efficiency.

As shown in the side views of FIGS. 10 and 12, the rear protrusions 38a1, 38b1, and 38c1 of the first, second, and third preliminary seedling platforms 20u, 20m, and 20d have a rear upward inclination shape (rear upward inclination part). A guide surface is formed, and the guide surface is made higher than the seedling placement surfaces of the preliminary seedling placement stands 20u, 20m, and 20d.
And in a development form, a rear side stopper part is arranged behind the guide surface or the guide surface in a side view.
Further, the rear protrusions 38a2, 38b2, and 38c2 of the first, second, and third preliminary seedling platforms 20u, 20m, and 20d are made higher than the seedling mounting surfaces of the preliminary seedling platforms 20u, 20m, and 20d, and It is the same as the upper surface of the front protrusions 38a1, 38b1, 38c1, or lower than the upper surface.

As described above, when the first projecting portions 38a1, 38b1, and 38c1 are rear-upward inclined portions, when the first, second, and third preliminary seedling platforms 20u, 20m, and 20d are in the expanded state, the front preliminary seedlings When moving a seedling box or the like from the mounting bases 20u, 20m to the rear spare seedling mounting bases 20m, 20d, the seedling box can be placed on the rear-upward inclined portion and moved rearward. And the work efficiency is improved as compared with the prior art.
Further, a front stopper portion formed at the rear portion of the guide surface of the front protruding portions 38a1, 38b1, and 38c1 and a rear stopper portion formed at the rear protruding portions 38a2, 38b2, and 38c2 are respectively provided as the preliminary seedling platforms 20u, 20m, and 20d. When the first, second, and third preliminary seedling platforms 20u, 20m, and 20d are stacked, the front protrusions 38a1, 38b1, 38c1, and the rear protrusion 38a2 are formed. , 38b2 and 38c2, it is possible to prevent the seedling boxes placed on the preliminary seedling platforms 20u, 20m, and 20d from moving back and forth, so that the seedling boxes fall downward from the preliminary seedling platforms 20u, 20m, and 20d. This eliminates the need to pick up the fallen seedling box and improves the work efficiency.

Between the left and right of the pair of front protrusions 38a1, 38b1, 38c1 of each of the spare seedling platforms 20u, 20m, 20d and at the bottom of the preliminary seedling platforms 20u, 20m, 20d, the front preliminary seedling platforms 20u, 20m Receiving members 38a3, 38b3, 38c3 for receiving the rear projecting portions 38a2, 38b2, etc. are provided respectively, and the receiving members 38a3, 38b3, 38c3 are provided in the space between the pair of front projecting portions 38a1, 38b1, 38c1. Protrusively formed.
In addition, receiving members 38a3, 38b3, 38c3 are provided on one of the front side protruding portions 38a1, 38b1, 38c1 and the rear side protruding portions 38a2, 38b2, and the front side protruding portions 38a1, 38b1, 38c1 are provided by the receiving members 38a3, 38b3, 38c3. And the other of the rear protrusions 38a2 and 38b2.
With the above-described configuration, the receiving members 38b3 and 38c3 are provided between the left and right sides of the front protrusions 38b1 and 38c1 of the respective reserve seedling platforms 20m and 20d, and the rear protrusions 38a2 of the front preliminary seedling platforms 20u and 20m. , 38b2 so that the preliminary seedling platforms 20u, 20m, and 20d are not lowered too much, and the deployed seedling platforms 20u, 20m, and 20d are surely aligned at substantially the same height. Therefore, the seedling box can be easily loaded and the work efficiency can be improved as compared with the prior art.

  Further, by providing the receiving members 38a3, 38b3, 38c3 at the bottom of the preliminary seedling platforms 20u, 20m, 20d, the upper ends of the rear protrusions 38a2, 38b2, 38c2 are the upper ends of the front protrusions 38a1, 38b1, 38c1. Since the seedling boxes placed on the front protrusions 38a1, 38b1, and 38c1 having the rear-upward inclined portions are smoothly moved, the work efficiency is improved as compared with the conventional case. To do.

In addition, first, second, and third partition walls 38a4, 38b4, and 38c4 that prevent the seedling box from dropping are provided at four locations on the front and rear sides of the first, second, and third preliminary seedling platforms 20u, 20m, and 20d. Each is arranged.
Furthermore, the rotation fulcrum 44 of the second moving link member 39b may be provided coaxially with the rotation shaft 45 of the second preliminary seedling stage 20m. In this case, it becomes the structure where the center 2nd seedling stand 20m does not move back and forth.
14 (a) and 14 (b) are side views showing the seedlings moving on the preliminary seedling mounting bases 20u, 20m, and 20d in the unfolded form, and FIG. 14 (c) is a plan view in which the seedlings are omitted. It is. 14C and 14D are a plan view provided with an auxiliary transport rotating body for assisting the transport of seedlings, and a side view of the main part.
Of the three protrusions 20u, 20m, and 20d, the front protrusions 38a1, 38b1, and 38c1 have front protrusions 38b1, 38c1 of the second and second preliminary seedling support 20m and 20d. Rotation assisting rotating bodies 47b and 47c that rotate to assist the seedling transportation are arranged.
At this time, the upper surfaces of the auxiliary conveyance rotating bodies 47b and 47c are configured to protrude upward from the upper part of the rear upward inclined surface of the front protrusions 38b1 and 38c1.
By providing the conveyance auxiliary rotators 47b and 47c in the front protrusions 38b1 and 38c1, the worker can put seedlings on the second preliminary seedling stage 20d and the third preliminary seedling stage 20d when in the deployed form. When pushing and moving, the force required to move the seedling can be reduced, so the labor of the operator is reduced.
Then, since the upper surfaces of the conveyance auxiliary rotators 47b and 47c are positioned above the front protrusions 38b1 and 38c1, the auxiliary conveyance rotators 47b and 47c act reliably.
FIG. 17 is an explanatory diagram showing the structure of the switching device 21.

  As shown in FIG. 17, the main support frame 24 is arranged inside the vehicle body, and the main link arm 41 is arranged outside the main support frame 24. A fixed support plate 58 is fixed to the upper end portion of the main support frame 24, and the switching actuator 22 is fixed to the fixed support plate 58.

  The main rotation shaft 44 is fixed to the main link arm 41, and is also fixed to the gear 32 so as to pass through the center position of the arc in which the tooth portion 55 is formed. The main rotation shaft 44 is rotatably connected to the main support frame 24, and the main rotation shaft 44, the gear 32, and the main link arm 41 are configured to rotate integrally.

  As shown in FIG. 17, the main support frame 24, the switching actuator 22, the gear 32, and the main link arm 41 are arranged in this order from the inside to the outside of the vehicle body. Further, as shown in FIG. A spare seedling frame 19 is connected to the outside.

  With the above configuration, the switching device 21 is positioned on the front side of the main link arm 41, the first sub link arm 42, and the second sub link arm 43 as viewed from the worker working on the auxiliary step 27. As a result, it is possible to prevent the hands and arms of the worker from colliding with the rotating main link arm 41, first sub link arm 42, and second sub link arm 43, so that work safety is improved.

  As shown in FIG. 5, the switching actuator 22 constituting the switching device 21, the rotating gear 61 and the gear 32 pivotally attached to the output shaft (not shown) of the switching actuator 22, together with the upper part of the main support frame 24, The switching unit cover 31 covers the structure.

  In addition, the said switching part cover 31 is good also as a structure covered in the upper part of the switching apparatus 21, for example by making it the box-shaped shape by which the downward direction was open | released. Moreover, it is good also as a box-shaped shape by which the side surface was open | released, covering the switching device 21 from the side surface by the side of the main support frame 24, and attaching a lid | cover to the side part opened after that.

  When the switching unit cover 31 is structured to be detachably attached from above the switching device 21 in a box shape having an open bottom, the switching unit cover 31 can be easily detached, so that maintainability is improved.

  Note that the size of the switching device 21 can be made more compact as the switching actuator 22 is arranged closer to the gear 32.

  The main support frame 24 may have a hollow pipe shape, and a harness that supplies power to the switching actuator 22 may be connected to the switching actuator 22 through the main support frame 24. With this configuration, it is possible to prevent the harness that supplies power to the switching actuator 22 from being entangled even when the main seedling frame 19 faces the inside of the vehicle body when the main support frame 24 is rotated.

Further, an operation member for switching the stacking form and the unfolding form of the preliminary seedling frame 19, that is, a switching operation switch 73 (shown in FIG. 16) for driving the switching actuator 22 is provided on the handle post 30 at the base of the steering handle 18. You may arrange. By providing a switching operation switch 73 on the handle post 30, the driver can operate the driving unit 10 to switch the state of the spare seedling frame 19.
In addition, since the switching operation switch 73 is disposed at a position that cannot be reached unless a hand is stretched while sitting on the driver's seat 12, the possibility of erroneous operation is reduced.

  Alternatively, the switching operation switch 73 for switching the state of the preliminary seedling frame 19 may be provided on the handle post 30 and at the front position of the bonnet 13. By adopting such a configuration, an assistant other than the driver can be operated, and for example, the rotation operation of the spare seedling frame 19 can be stopped when it is felt dangerous.

Similarly, a switching operation switch 73 for switching the state of the preliminary seedling frame 19 may be provided in the preliminary seedling frame 19 or the switching device 21.
FIG. 10 is a side view showing the reserve seedling frame 19 in a stacked form provided with stop plates 73a1 and 73a2, and FIG. 11 is a main part side view showing the mounting positions of the stop plates 73a1 and 73a2. FIG. 12 is a side view showing the reserve seedling frame 19 in an unfolded form provided with the stop plates 73a1 and 73a2, and FIG. 13 is a side view of the main part showing the attachment positions of the stop plates 73a1 and 73a2.
Further, FIG. 16 shows that when the spare seedling frame 19 is operated and the main link arm 41, the first and second sub link arms 42, 43 contact the stop plates 73a, 73a2, and a load is generated on the switching actuator 22, the switching actuator It is an operation control block diagram which shows that 22 stops.
When the operation switch 73 is operated to switch the preliminary seedling frame 19 to the stacked form and the deployed form, the main seeding arm 19 contacts the main link arm 41, the first and second sub link arms 42, 43, and further rotates. Stop plates 73a1 and 73a2 to be regulated are provided. The stop plates 73a1 and 73a2 are provided on the side surfaces of the center preliminary seedling stage 20m and the lower preliminary seedling stage 20d in a stacked form.
As shown in FIGS. 10 and 11, when the reserve seedling frame 19 is in a stacked state, the main link arm 41 comes into contact with the stop plate 73a2 located on the lower side to restrict further rotation, and this rotation restriction is performed. By continuing, when the load more than a fixed value arises in the switching actuator 22, or when it becomes an overheated state, the control apparatus 100 stops the switching actuator 22.
Further, as shown in FIGS. 12 and 13, when the preliminary seedling frame 19 is in the deployed form, the main link arm 41 comes into contact with the stop plate 73a1 located on the front side to restrict further rotation, and this rotation restriction is prevented. By continuing, when the load more than a fixed value arises in the switching actuator 22, or when it becomes an overheated state, the control apparatus 100 stops the switching actuator 22.

As described above, the switching actuator 22 is stopped via the control device 100. However, the switching actuator 22 is an electric motor, and an energization path using the energization switching member 92 is disposed inside the electric motor. A configuration may be adopted in which the energization switching member 92 is bent and forcibly switched from the energized state to the non-energized state when the temperature exceeds a certain temperature due to a load.
With the above configuration, when the spare seedling frame 19 is switched to the stacked form or the deployed form, the operator does not have to stop the switching actuator 22 by operating the switching operation switch 73, so that the operator can concentrate on other operations. Work efficiency is improved more than before.

In addition, when the preliminary seedling frame 19 is in a stacked form or an unfolded form, the main moving link arm 41 comes into contact with the stop plates 73a1 and 73a2. The link arms 42 and 43 are prevented from moving and the preliminary seedling frame 19 is prevented from shaking back and forth, so that the seedling is prevented from falling, and wear of the preliminary seedling frame 19 and other components due to the shaking is reduced.
Furthermore, when the spare seedling frame 19 is switched to the stacked form or the deployed form, components such as a switch for stopping the switching actuator 22 and a circuit can be omitted, so that the number of parts can be greatly reduced and the configuration can be reduced. Be concise.

18A and 18B, the configuration of the switching device 21 of the present case will be described.
A cover plate 78 constituting the switching device 21 is provided, and an auxiliary plate 79 is mounted at a position closer to the outside of the vehicle body than the gear 32 that moves the main link arm 41. Then, a holding plate 80 is mounted between the left and right of the cover plate 78 and the auxiliary plate 79, the holding plate 80 is extended to the auxiliary plate 79 side and supported by the auxiliary plate 79, and the auxiliary plate 79 and the holding plate 80, the switching actuator 22 is supported from the left and right.
In the switching device 21 configured as described above, the holding plate 80 is provided between the left and right of the cover plate 78 and the auxiliary plate 79, and the switching actuator 22 is supported from the left and right by the holding plate 80 and the auxiliary plate 79, whereby the main link arm 41. When the first and second sub link arms 42 and 43 contact the stop plates 73a1 and 73a2 and apply a load, even if a force that the switching actuator 22 tries to move is applied to the holding plate 80, the force is covered. Since it can be received by the plate 78 and the holding plate 80, the switching actuator 22 is accurately supported with sufficient strength.
Further, since the distance between the switching actuator 22 and the gear 32 can be prevented by preventing the switching actuator 22 from moving, the adjustment work of the switching device 21 becomes unnecessary, and the work efficiency is improved.
As described above, by using the spare seedling frame 19 that can be switched between the stacked form and the deployed form, the seedling mat and seedling box are moved to the seedling transplanter from outside the field by moving on the spare seedling platforms 20u, 20m, and 20d. Since the loading operation can be performed, the loading operation of the seedling becomes easy, and the labor of the operator is reduced. However, when planting with the seedling transplanter of this configuration, since the fertilizer is supplied to the field by the fertilizer application device 17, it is necessary to periodically replenish the fertilizer with the fertilizer, which is used for the supplement work. It is also necessary to load fertilizer bags.
The fertilizer bag has a weight of about 20 kg per bag if it is of a commercially available general size. In the conventional work, the worker holds the fertilizer bag and moves in the field and replenishes the fertilizer application device 17 after being raised on the seedling transplanter. However, the weight of the operator is about 20 kg. Walking in the paddy field will make it easier for the feet to be removed by mud, so there is a problem that the worker is burdened with a great deal of effort even when moving short distances.

In order to solve the above problems, the fertilizer bags are placed on the preliminary seedling platforms 20u, 20m, and 20d of the preliminary seedling frame 19 of the present case, and the operator holds the fertilizer bags by switching from the deployed form to the stacked form. It may be possible to omit the work of walking in the field. Due to the structure of the spare seedling frame 19 of the present case, the above-described operation can be performed if it is about one bag of a fertilizer bag of about 20 kg.
However, the spare seedling frame 19 of the present case is made on the assumption that a seedling mat or seedling box of about 1 to 2 kg is placed on each of the spare seedling platforms 20u, 20m, and 20d. When a manure bag having a weight of about 10 times is loaded and switching from the expanded form to the laminated form is performed, the load on the component parts of the spare seedling frame 19 is easily applied, and the work is performed using a seedling mat or seedling box. Compared to the conditions, there is a problem that the durability of the reserve seedling frame 19 is quickly lowered.
In addition, the loading area of the spare seedling platforms 20u, 20m, and 20d is adapted to the seedling mat and seedling box, and is smaller than the area of a general fertilizer bag, so the loading posture of the fertilizer bag is stabilized. However, it falls in the middle of conveyance, and the operator has to go down to the field and pick up the fertilizer bag, which increases the labor of the operator and lowers the work efficiency.
Note that there is almost no difference in the areas of the seedling mat and the seedling box under standard cultivation conditions.
And the capacity of the storage hopper of the fertilizer application device 17 provided in the seedling transplanter of this case is about 10 kg per one piece, and only one piece of fertilizer bag can be replenished. In this case, at least three bags need to be loaded with fertilizer bags. If the worker carries the bag, there is a problem that the worker spends considerable labor. Is applied to the component parts of the reserve seedling frame 19, and there is a problem that the durability is quickly reduced accordingly.
Furthermore, unlike a seedling mat or seedling box, there is no dedicated place for placing the fertilizer bag, so it is often placed on the floor step 11, but the seedling is transferred from the spare seedling frame 19 to the seedling planting part 16. When performing the work of replenishing the fertilizer, there is a problem that the fertilizer bag restricts the movement range of the worker and lowers the work efficiency.

A configuration that solves the above problem is shown below.
As shown in FIGS. 19 and 20, a mounting stay 101 is provided on the upper side of the base support frame 23 so as to face the inner side of the machine body, and the main support frame 24 and the sub-support frame of the preliminary seedling frame 19 are provided at the inner side of the machine body of the mounting stay 101. 25 is provided. Further, a support arm 102 is provided on the outside of the body of the mounting stay 101, and a position of the support arm 102 that is below the central portion in the left-right direction of the preliminary seedling platforms 20u, 20m, and 20d that overlap in the vertical direction in a stacked form. The 1st rotation pin 103 is provided in this. Then, the base side of the rotating arm 104 is provided above the first rotating pin 103, and the fertilizer mounting table 105 is provided on the end side of the rotating arm 104.
As shown in FIG. 19, when the turning arm 104 is turned forward, the fertilizer placing table 105 is positioned below the preliminary seedling placing table 20u located in the front row in the unfolded form, and protrudes toward the front side of the body. At the same time, when the rotating arm 104 is rotated rearward, the fertilizer mounting table 105 is positioned below the preliminary seedling mounting table 20d located in the last row in the unfolded form, and protrudes toward the front side of the machine become. At this time, the machine body outer side end portion of the fertilizer mounting table 105 is positioned below the machine body outer end parts of the preliminary seedling mounting tables 20u, 20m, and 20d, and does not protrude excessively outside the machine body.
Although it is not preferable that the fertilizer mounting table 105 protrudes outward from the outer side edge of the spare seedling frame 19, the fertilizer placement table 105 moves to the inner side from the inner side edge of the machine body, and the floor step 11 includes an operator. There is no problem in moving to a place where does not move.
When moving the floor step 11, the operator basically keeps his / her foot away from the end of the floor step 11 in order to ensure the stability of the scaffold. Therefore, even if the fertilizer placing table 105 is positioned above the end of the floor step 11, it does not come into contact with the operator's feet, and the fertilizer placing table 105 is not damaged by the operator.
By positioning the inner end portion of the fertilizer placing table 105 closer to the inner side than the inner end portion of the preliminary seedling frame 19, the operator can easily see the fertilizer placing stand 105 and work on the floor step 11. Since it approaches the operator who performs, it becomes easy for a worker to take out a fertilizer bag from the fertilizer mounting stand 105, and work efficiency improves.
As shown in FIGS. 24 (a), (b) and FIGS. 25 (a) and 25 (b), a first or ten-letter first locking groove 103 a is formed in the lower portion of the first rotation pin 103, A first rotation stopper 103b that is rotatable up and down is provided, and the first rotation stopper 103b is inserted into the first lock groove 103a to restrict the rotation of the rotation arm 104. When the first lock groove 103a is a single character, the first rotation stopper 103b can be inserted into the first lock groove 103a when the fertilizer mounting table 105 is moved forward or backward of the machine body. The first rotation stopper 103b can be inserted into the first lock groove 103a even when the fertilizer placement table 105 is rotated in the outer direction of the machine body (the rotation arm 104 is rotated 90 degrees).
The main support frame 24 and the sub support frame 25 are provided in the vertical direction on the inner side of the rotary arm 104 so that the main support frame 24 and the sub support frame 25 are connected to the rotary arm 104. It becomes a rotation restricting member toward the inside of the machine body.
Thereby, it is prevented that the rotating arm 104 is moved too much and the fertilizer placing table 105 is excessively moved in the inner direction of the machine body, and an operation for moving the fertilizer placing table 105 to an appropriate position becomes unnecessary. The efficiency is improved, and the fertilizer placing table 105 is brought into contact with the bonnet 13 and the like, so that the fertilizer placing table 105, the bonnet 13 and peripheral components are prevented from being damaged.
With the above configuration, when the fertilizer bag is loaded from the end of the field, if the pivot arm 104 is rotated to the front side of the machine body, the fertilizer placing table 105 can be protruded forward of the machine body, so that the outside of the field. Workers can easily load the fertilizer on the aircraft, improving work efficiency.
In particular, when working in a field with a water channel at the end of the field, or in a field where the scaffolding at the end of the field is unstable, the operator does not have to step out and load the fertilizer bag into the machine. The labor is reduced and the fertilizer bag is dropped, and the work of picking up the fertilizer bag becomes unnecessary, so that the work efficiency is improved.
In addition, since the rotation arm 104 can be rotated to the outside of the machine body and the fertilizer placing table 105 can be held in a posture protruding to the outside of the machine body, the fertilizer placing table 105 can be placed at the farm field end even if the machine body is placed on the farm field side. Since it can approach, it becomes possible to respond to various work conditions, and the work efficiency can be improved and the labor of the worker can be reduced.
When the fertilizer placement table 105 is moved, the rotation arm 104 is rotated in the outer direction of the machine body, so that the rotation arm 104 and the fertilizer placement table 105 do not move on the floor step 11. Can replenish seedlings and fertilizers on the floor step 11 without avoiding the rotating arm 104 and the fertilizer mounting table 105, and work efficiency is improved.
Furthermore, the fertilizer can be obtained by adopting a configuration in which the outer end portion of the fertilizer mounting table 105 is positioned almost directly below the outer end portion of the preliminary seedling frame 19 regardless of whether the fertilizer mounting table 105 is moved to the front part or the rear part of the machine body. Since it is possible to prevent the mounting table 105 from protruding outside the apparatus, the fertilizer mounting table 105 is prevented from being damaged due to contact with a wall or the like, and durability is improved.
Further, if the fertilizer placing table 105 is moved to the rear side of the machine body, the fertilizer placing table 105 can be brought close to the fertilizer application device 17, so that the operator takes the fertilizer bag from the fertilizer placing table 105 and moves it to the fertilizer application device 17. The distance is shortened, the work efficiency is improved, and the labor of the worker is reduced.
Since the fertilizer bag can be placed on the fertilizer placing table 105 until the fertilizer replenishment operation is performed, the number of fertilizer bags placed on the floor step 11 is reduced, and the operator However, it becomes easier to move during replenishment work for seedlings and fertilizers, improving work efficiency.
As described above, when the fertilizer mounting table 105 is moved to the front side of the machine body, it becomes easy to load the fertilizer from outside the field. However, if the position where the fertilizer is prepared is located on the inner side or the outer side of the body from the position where the fertilizer mounting table 105 is moved forward, the distance that the operator moves with the fertilizer bag becomes slightly longer. This makes it impossible to improve work efficiency and reduce labor.
Further, in the configuration in which the fertilizer placing table 105 is provided below the left and right spare seedling frames 19 and 19, even if the fertilizer can be loaded on the left and right fertilizer placing tables 105 with little movement, the other fertilizer on the left and right sides If the mounting table 105 does not move with a fertilizer bag, it cannot be loaded, and work efficiency and labor can not be sufficiently reduced.
19 and 20 described above, the fertilizer mounting table 105 can be moved to the inside of the machine body by rotating the turning arm 104 to the inside of the machine body until it contacts the main support frame 24. However, at this time, since the fertilizer placing table 105 is inclined as viewed from the worker working at the end of the field, the worker points the appropriate fertilizer bag obliquely when placing the fertilizer bag on the fertilizer placing table 105. There is a problem that the working efficiency is lowered because it does not lead to an improvement in work efficiency, or it takes time to load.
As a method for solving the above problem, there is a configuration shown in FIGS.
A second pivot pin 106 is provided on the base side of the support arm 102 provided on the mounting stay 101 so that the support arm 102 can be pivoted back and forth. The second lock groove 106a is formed, and a second rotation stopper 106b is provided on the main support frame 24 so as to be rotatable up and down, and the second rotation stopper 106b is inserted into the second lock groove 106a to support the support. The arm 102 is configured to restrict the rotation of the arm 102.
In the above configuration, the first rotation stopper 103b is inserted into the first lock groove 103a, the rotation of the rotation arm 104 is restricted, and the rotation arm 104 does not operate unexpectedly. It is good to leave.
In the above configuration, the rotation fulcrum is positioned on the inner side of the machine body with respect to the rotation arm 104, whereby the support arm 102 is rotated to the front side of the machine body until the front end portion of the fertilizer mounting table 105 is substantially parallel to the field end. When it is moved, the fertilizer mounting table 105 is positioned on the front side of the machine body, on the front side of the floor step 11 in FIG. 21, so that even if the position where the fertilizer bag is placed on the field edge is closer to the inside of the machine body, Since the fertilizer can be loaded without moving with the fertilizer bag, the work efficiency is improved and the labor of the operator is reduced.
When the fertilizer placement table 105 is moved to the front side of the floor step 11, the support arm 102 is moved to the placement position without fine operation of the support arm 102 if the support arm 102 is arranged to contact the main support frame 24. Work efficiency can be improved.
With the arrangement configuration described above, when the support arm 102 is rotated toward the rear of the machine body, the rotation of the support arm 102 is restricted at a position where the support arm 102 is in contact with the sub-support frame 25. Since the end portion is located below the outer edge of the spare seedling frame 19, the fertilizer placing table 105 is prevented from being damaged by contact with a wall or the like, and the fertilizer placing table 105 is disposed above the floor step 11. Since it is not located, the operator can easily replenish seedlings and fertilizers on the floor step 11, and work efficiency is improved.
Further, in the configuration in which the left and right fertilizer mounting tables 105 and 105 are provided, the left and right fertilizer mounting tables 105 and 105 can be moved to the inside of the machine body. This makes it easier to load fertilizer bags and further improves work efficiency.
In the above configuration, if the second lock groove 106a is formed in a cross shape, the fertilizer mounting table 105 can be in a posture protruding in the left and right outer direction of the machine body, but the second rotation of the support arm 102 is possible. Since the pin 106 is provided closer to the inner side of the machine body, the amount of protrusion of the fertilizer mounting table 105 to the outer side of the machine body is smaller than the configuration in which the rotation arm 104 is rotated. Thus, when there is sufficient space on the side of the machine body, it is easier for the operator to load the fertilizer by rotating the rotating arm 104 and increasing the amount of protrusion of the fertilizer mounting table 105.
However, in places such as residential areas where there is a wall in the immediate vicinity of the farm field edge, the fertilizer mounting table 105 comes into contact with the wall if the amount of protrusion is too large. The projecting operation to the side may not be possible. At this time, the support arm 102 is rotated, and the fertilizer mounting table 105 is protruded to the side of the machine body in a state where the protruding amount is suppressed, thereby preventing the fertilizer mounting table 105 from contacting the wall and loading the fertilizer. The labor of the worker required for the work can be reduced.
The above-described configuration is a configuration in which the fertilizer placing table 105 is close to the inside of the machine body. However, as shown in FIGS. 22 and 23, the fertilizer placing table 105 may be configured to be able to stop at the position outside the machine body.
The first rotation pin 103 and the rotation arm 104 are configured to be detachable from the support arm 102, and the base side of the extension arm 108 is provided at the outer end of the support arm 102. Then, by attaching the fertilizer mounting table 105 to the end of the extension arm 108, the fertilizer mounting table 105 can be positioned at a position far away from the machine body.
In this configuration, even if the support arm 102 to which the extension arm 108 is attached is rotated and the fertilizer placing table 105 is moved to the front side or the rear side of the machine body, the main support frame 24 and the sub support frame 25 are not contacted. Needs to be in a state in which the rotation of the support arm 102 to which the extension arm 108 is attached is controlled by operating the second rotation stopper 106b at the fertilizer bag loading operation position and the transfer stop position of the fertilizer mounting table 105. .
Further, when the outer end portion of the fertilizer placing table 105 moved to the rear side of the body is positioned below the outer end portion of the spare seedling frame 19, the support arm 102 to which the extension arm 108 is attached is rotated. It is necessary to regulate.
At this time, since the second lock groove 106a is formed in one letter or ten letters, the position where the first rotation stopper 106b can be inserted into the second lock groove 106a is set to the position of the support arm 102 to which the extension arm 108 is attached. The rotation stop position can be determined.
In the above configuration, the rotation fulcrum is positioned on the outer side of the machine as compared with the configurations of FIGS. 19 and 20, so that the rotary arm 104 is moved to a position where the front end portion of the fertilizer mounting table 105 is substantially parallel to the farm field end. When it is turned to the front side, the fertilizer mounting table 105 is largely separated from the machine body. Therefore, there is no obstacle around the fertilizer loading work, and the fertilizer loading work can be performed efficiently.
Further, by providing the fertilizer mounting table 105 at the end of the extension arm 108, the distance between the fertilizer mounting table 105 and the fertilizer application device 17 can be reduced when the fertilizer mounting table 105 is moved to the rear side of the machine body. The distance by which the worker moves the fertilizer bag to the fertilizer application device 17 is shortened, the work efficiency is improved, and the labor of the worker is reduced.
19 and 20, the fertilizer mounting table 105 can be moved to a position separated from the outside of the machine body, but the rotation fulcrum is located below the preliminary seedling frame 19. The amount of protrusion to the front side of the fertilizer mounting table 105 is small, and the fertilizer mounting table 105 is inclined as viewed from the worker working at the end of the field, so that the worker mounts the fertilizer bag on the fertilizer mounting table 105. At this time, it is necessary to place an appropriate fertilizer bag at an angle, which does not lead to an improvement in work efficiency, or on the contrary, it takes time to load, and there is a problem that work efficiency is lowered.
26 (a) and 26 (b) show the fertilizer mounting table 105 in a working position for replenishing the fertilizer loading work and the fertilizer application apparatus 17, and a storage position at the time of seedling planting work and at the end of the work. It is the structure which switches.
The fertilizer mounting table 105 is attached to any one of the support arm 102, the turning arm 104, and the extension arm 108 via an attachment arm 110 to which a third turning pin 109 is attached. At this time, the fertilizer mounting table 105 is rotated using the third rotation pin 109 as a rotation fulcrum, and is configured to be movable to a position overlapping the preliminary seedling frame 19 in plan view.
Then, by connecting the lower side of the third rotation pin 109 and the lower side of the connection pin 111 provided on the support arm 102, the rotation arm 104 or the extension arm 108 with a connection spring 112, the fertilizer mounting table 105 is attached. When the rotation operation is performed, the working position or the storage position is maintained by the tension of the connection spring 112 until the fulcrum is exceeded.
The connection spring 112 has a biasing force that does not exceed the fulcrum unless a strong force is applied.
As a result, when planting seedlings or storing the machine body, the fertilizer placing table 105 can be moved to a position overlapping the preliminary seedling frame 19 with the third pivot pin 109 as a pivot point. However, it is possible to prevent the worker from getting in and out of the front and side of the machine body, and the operator does not need to move the fertilizer placing table 105 when getting on and off the machine body, thereby improving work efficiency.
In addition, since the fertilizer mounting table 105 can be prevented from projecting to the front or side of the machine when the machine is stored, the front / rear width or the left / right width of the machine is reduced, which increases the space required for storage. This eliminates the need to take and improves storage.
Then, when the fertilizer is loaded and moved, that is, when the fertilizer mounting table 105 is rotated from the front side to the rear side, the hand touches the fertilizer mounting table 105 or the centrifugal force at the time of rotation. The fertilizer placing table 105 is prevented from rotating at a timing unintended by the operator due to the application of the fertilizer, so that the fall of the fertilizer bag is prevented, and the work of picking up the fertilizer bag becomes unnecessary.
In addition, the support arm 102 or the rotation arm 104 is located in the vicinity of the first rotation pin 103 that is the rotation fulcrum of the rotation arm 104 or the second rotation pin 106 that is the rotation fulcrum of the support arm 102. The L-shaped rotation operation lever 113 is attached in a plan view.
With the above configuration, the fertilizer bag is loaded on the fertilizer mounting table 105, the rotation direction in which the support arm 102, the rotating arm 104, or the extension arm 108 is rotated toward the rear side of the machine body, and the fertilizer mounting table 105 is reserved. Since the rotation direction to rotate from the lower side of the seedling frame 19 to the rear side of the machine body can be the same direction, when manipulating the support arm 102 and the rotation arm 104 with the rotation operation lever 113, the fertilizer When the fertilizer mounting table 105 is prevented from rotating due to the weight or centrifugal force of the fertilizer bag loaded on the mounting table 105, the fertilizer bag loaded from the outside of the field is used for the fertilizer replenishment work of the fertilizer application device 17 for an extra time. Since the operation of the dynamic operation lever 113 is not required, the work efficiency is improved.
In addition, the work position or the storage position of the fertilizer mounting table 105 is maintained by the tension of the connection spring 112, and the work position and the storage position are switched by the tension of the connection spring 112 when the support spring 112 is exceeded. After that, it is not necessary to apply a force to rotate, and the labor of the operator is reduced.
Since the rotation operation lever 113 is provided near the rotation fulcrum of the support arm 102 or the rotation arm 104, the operator can perform the operation beyond the fulcrum with a light force. It is reduced.
Also,
The fertilizer mounting table 105 is configured to switch between a rotating state and a non-rotating state by putting the first rotation stopper 103b or the second rotation stopper 106b into and out of the first lock groove 103a or the second lock groove 106b. It is said. However, in this configuration, the operator needs to perform a lock on / off operation every time the fertilizer placing table 105 is moved, and there is a problem that the labor of the operator is increased to some extent.
In order to solve the above problem, as shown in FIG. 27, a boss 114 provided on the base side of the support arm 102 is attached to the main support frame 24, and a locking recess 114 a is formed on the boss 114. Then, a lock projection 115 into which the concave portion 114a enters is fixed to the main support frame 24, and a lowering stopper 116 for restricting the lowering of the boss 114 is fixed below the lock projection 115 and the boss 114, and the boss 114 is fixed. A spring 117 that biases the boss 114 upward is provided between the upper and lower portions of the mounting stay 111 so as to be extendable.
Unlike the configuration of FIGS. 20 and 23, the support arm 102 is configured to be positioned on the mounting stay 101 regardless of whether the fertilizer bag is loaded or not, and the main support frame 24 is pivotally supported. It is set as the structure rotated in the front-back direction. Since the fulcrum position is close to the second rotation pin 106 shown in the figure, the fertilizer mounting table 105 is positioned at a position that is substantially parallel to the end of the field when moved to a position closer to the inside of the machine body. It becomes.
With the above configuration, when the fertilizer bag is placed on the fertilizer placing table 105, the fertilizer placing table 105 is lowered by the weight of the fertilizer bag, and the boss 114 pushes and shrinks the spring 117 in conjunction with the main support frame 24. Descend. Then, since the recess 114a formed in the boss 114 is positioned below the lock projection 115, the support arm 102 can be rotated in the longitudinal direction of the machine body with the main support frame 24 as a rotation fulcrum, and the fertilizer mounting table 105 is moved. It becomes possible.
Therefore, when the fertilizer is loaded on the fertilizer mounting table 105 or when the operator pushes the fertilizer mounting table 105 downward, the rotation lock state is released, and the fertilizer is loaded on the fertilizer mounting table 105 and transported to the fertilizer 17. Since the fertilizer bag can be loaded, it can be moved to the front side of the machine body. Therefore, the rotation mechanism has a simple configuration, and a highly maintainable configuration that is easy to assemble and disassemble.
Further, since the unlocking operation performed by the operator is only the operation of loading the fertilizer bag or pushing down the fertilizer mounting table 105, it is possible to prevent the labor of the worker from increasing.
As shown in FIGS. 28 (a) and 28 (b), the boss 114 is formed with two concave portions 114a, one at a position 180 degrees apart on the circumference, a total of two. On the other hand, when entering the recess 114a, the lock projections 115 that restrict the rotation of the support arm 102 and put the fertilizer placing table 105 in a non-rotating state are positioned 90 degrees apart from each other on the circumference of the main support frame 24. One, a total of four shall be formed. Further, the lowering stopper 116 may have a structure in which one or a plurality of protrusions (for example, positions below the four lock protrusions 115, 115, 115, 115) are provided at positions where the boss 114 can be received. It is good also as a circular shape which can be received.
Further, the first lock groove 103a and the second lock groove 106a are formed on a member having a high frictional force such as rubber provided at the end of the first rotation pin 103 and the second rotation pin 106, and a fertilizer bag. Is loaded on the fertilizer mounting table 105, the first rotation stopper 103b and the second rotation stopper 106b overcome the frictional resistance and come out of the first lock groove 103a and the second lock groove 106a to rotate the fertilizer mounting table 105. It is good also as a structure switched to a state.
When the first and second lock grooves 103a and 106b are formed on the spring 117 or a member having a high frictional force such as rubber, when the fertilizer bag of about 20 kg is loaded on the fertilizer mounting table 105, the fertilizer is slowly loaded. It is good to comprise the mounting base 105 with the member which has the biasing force used as the structure which switches from a non-rotation state to a rotation state, or a friction coefficient.
In the figure, left and right line-drawing markers 200, 200 are formed on the left and right sides of the machine body, which form a straight line for straight running in the field scene at the work position of the next process, adjacent to the work position where the seedling planting work is performed. Is provided. When the seedling planting part 16 is lowered so as to plant seedlings, the left and right line drawing markers 200 and 200 rotate downward on the left and right sides to form a reference line in the field scene, and the other line drawing marker 200 is The posture is such that the posture is retracted significantly upward from the field scene.
As shown in FIG. 29, the switching rotation operation of the left and right drawing markers 200, 200 is performed by the marker switching motor 201, provided on the base side of the left and right drawing markers 200, 200 when the seedling planting unit 16 is moved up and down. This is done by operating 201.
When the seedling planting section 16 is raised, the left and right marker switching motors 201 and 201 are operated to rotate the drawing markers 200 and 200 upwardly far away from the farm scene and to plant seedlings. When the unit 16 is lowered, the marker switching motor 201 on the opposite side to the previous operating direction stored in the control device 100 is operated, and the corresponding drawing marker 200 is rotated downward to come into contact with the field scene. It is said.
In order to use this mechanism, as shown in FIGS. 30A, 30B, and 32, when the boss 114 is lowered to a position where the lock projection 115 does not enter the recess 114a, the boss 114 comes into contact with the The lowering switch 118 may be provided, and when the lowering switch 118 is “ON”, the marker switching motor 201 is operated to rotate the drawing marker 200 downward.
With the above configuration, when the fertilizer placing table 105 is moved to the rear side of the machine body, it is possible to prevent the fertilizer placing table 105 and the placed fertilizer bag from coming into contact with the drawing marker 200. Therefore, before the fertilizer placing table 105 is rotated. There is no need to separately perform an operation of lowering the drawing marker 200, so that the work efficiency is improved, and the drawing marker 200 and the fertilizer mounting table 105 are prevented from being damaged.
As shown in FIGS. 31 and 32, the lowering switch 118 is provided at a position to move when the first rotation stopper 103b or the second rotation stopper 106b is operated to the unlocking position, and the first rotation stopper 103b or the second rotation stopper 103b is moved. The drawing marker 200 may be lowered in conjunction with the operation of releasing the rotation restriction of the two rotation stopper 106b.
Moreover, the fertilizer storage part of the fertilizer application device 17 is provided with an openable and openable hopper lid 17a at the upper part so as to prevent the fertilizer from splashing and the entry of water. When the fertilizer is replenished, the hopper lid 17 a is opened and the fertilizer is supplied to the fertilizer application device 17.
At this time, as shown in FIG. 32, an opening detection switch 121 that is turned “ON” when the hopper lid 17 a is opened is provided, and when the opening detection switch 121 is turned “ON”, the control device 100 switches the marker switching motor 201. It is good also as a structure which operates and draws down the drawing marker 200. FIG.
With the above configuration, when the hopper lid 17a is opened during the replenishment of fertilizer and preparation for replenishment is made, the drawing marker 200 is automatically lowered and switched to the state in which the fertilizer placing table 105 is moved. There is no need to perform the lowering operation of the marker 200, and the work efficiency is improved.
The seedling transplanter of the present case is provided with an engine 210 as a driving source and an HST (hydraulic continuously variable transmission) 211 that receives the driving force from the engine 210 and changes the traveling output of the aircraft and the output direction. It has been. As shown in FIG. 5 and the like, the HST 211 is configured to switch the magnitude and output direction of the traveling output by operating a traveling operation lever 212 provided on the hood 13.
As shown in FIG. 32, the operation of the travel operation lever 212 may be configured by providing an interlocking mechanism (not shown) composed of a plurality of parts between the travel operation lever 212 and the HST 211. A control for changing the output of the HST 211 by providing a travel potentiometer 213 for detecting the operation angle, transmitting the operation angle detected by the travel potentiometer 213 to the control device 100, operating the HST servo motor 214 that rotates the output shaft of the HST 211 It is good also as a structure.
32 and 33 show that the first rotation pin 103 is provided with a large-diameter cam 119, and an operation detection switch 120 is provided at a position where the cam 119 contacts when the rotation arm 104 is rotated. When the operation detection switch 120 is turned “ON”, the control device 100 does not transmit a signal for operating the HST servo motor 214 even if the operation angle detected by the travel potentiometer 213 is changed.
Basically, seedling and fertilizer loading work is performed in a state where the aircraft is stopped in order to ensure safety and prevent a reduction in work efficiency. When the time required for the loading operation is short, the so-called neutral state in which the engine 210 is not stopped by a key operation and the traveling operation lever 212 is operated to set the output of the HST 211 to 0 in both the front and rear directions is often obtained. As a result, the traveling can be resumed as soon as the traveling operation lever 212 is operated, so that the work efficiency is improved.
However, when the seedling or fertilizer is replenished, a part of the body or a fertilizer bag comes into contact with the travel operation lever 212, and if the travel operation lever is operated in the forward or reverse direction from the neutral position, the aircraft starts to move. The worker must stop the loading of seedlings and fertilizers and stop the aircraft, which reduces work efficiency and requires picking up seedlings and fertilizer bags during loading, which increases labor To do.
Also, replenishment work of seedlings and fertilizers is often done at the end of the field, and when the aircraft moves forward, the aircraft will get out of the field, requiring extra operations to move the aircraft backwards, further reducing the work efficiency. There's a problem.
Furthermore, if the aircraft moves backward and moves over the planted seedlings, the seedlings will be crushed, and the seedlings will have to be replanted, increasing the labor of workers and increasing the consumption of seedlings. There is a problem.
In the above configuration, when the fertilizer carrier 105 is rotated, the HST servo motor 214 does not operate even when the travel operation lever 212 is operated when the cam 119 contacts the operation detection switch 120. Even if the travel operation lever 212 is operated, the output of the HST 211 is not performed and the machine body is prevented from moving forward and backward, so that the work of loading seedlings and fertilizer can be performed efficiently.
Also, since the seedling and fertilizer can be prevented from falling and the planted seedling can be prevented from being crushed by the aircraft, there is no need to collect the seedling or fertilizer or replant the crushed seedling. Is reduced, and wasteful seedling consumption is prevented.
When replenishing seedlings or fertilizers, the fertilizer mounting table 105 may be moved to the front side of the machine before stopping traveling when approaching the end of the field. At this time, the cam 119 pushes the operation detection switch 120 to “ When the “ON” operation is performed, the HST servo motor 214 rotates the output shaft of the HST 211 until the output is slightly advanced, so that the traveling speed can be reduced at the same time as the seedling placement work preparation, thus improving the work efficiency. .
Further, a throttle motor 215 for changing the rotational speed of the engine 210 is provided, and when the operation detection switch 120 is turned “ON”, the throttle motor 215 does not stop the rotational speed of the engine 210 (for example, 800 rpm). It is good also as a structure which reduces automatically.
With the above-described configuration, the number of revolutions of the engine 210 can be automatically reduced extremely during seedling or fertilizer replenishment work, so that fuel consumption can be suppressed.
When the operation detection switch 120 is turned “off”, the throttle motor 215 increases the rotational speed of the engine 210 to an idling rotational speed (eg, 1800 to 2000 rpm).
Alternatively, the number of revolutions of the engine 210 when the operation detection switch 120 is “ON” is stored in the control device 100, and when the operation detection switch 120 is “OFF”, the engine 210 stored in the control device 100 is stored. It is good also as a structure which returns to this rotation speed.
According to the above configuration, the rotation speed of the engine 210 necessary for resuming traveling can be obtained without the operator's operation, so the time until returning from seedling and fertilizer loading work to seedling planting work is shortened. , Work efficiency is improved.
In particular, by returning to the rotation speed of the engine 210 stored in the control device 100, the rotation speed of the engine 210 that can move the machine body is automatically returned to the rotation speed of the engine 210 even in a field with a strong mud such as a field edge. Work efficiency is further improved.
In addition, the planting operation state in which the planting operation is performed in the farm field, the traveling state when moving outside the farm field, and the driving power are supplied to the seedling planting unit 16 regardless of the output of the HST 211. As shown in FIG. 1, an auxiliary transmission operation lever 216 for switching to the traveling neutral state is provided on the lower side of the bonnet 13.
Since the fertilizer placing table 105 is rotated in a planting operation state or a traveling neutral state, when the operation detection switch 120 is turned “on”, the auxiliary transmission operation lever 216 cannot be operated in the traveling state. It is good also as composition to do.
In the above configuration, when the operation detection switch 120 is “ON”, the control device 100 operates the solenoid 217 in one direction, and the first restriction pin 218 is placed at a position where the operation of the auxiliary transmission lever 216 to the traveling state side is restricted. It is set as the structure made to protrude.
On the contrary, when the auxiliary speed change operation lever 216 is in the traveling state, there is no situation where the fertilizer placing table 105 is rotated. However, since it is conceivable that the turning arm 104 and the support arm 102 are turned when the vehicle stops suddenly, for example, when the sub-shift operation lever 216 is operated to the traveling state, the turning arm 104 or the support arm 102 is regulated. 2 It is good to set it as the structure which makes the regulation pin 219 protrude.
As described above, it is possible to prevent the operation position from being changed to the traveling state due to the foot or the like being in contact with the auxiliary transmission operation lever 216 at the time of replenishment work of seedlings or fertilizer, so that the traveling speed becomes the traveling speed on the road when traveling is resumed. This prevents the operator from feeling uncomfortable, and the planting position of the seedling is not disturbed, so that the seedling planting accuracy is improved.
In addition, since the sub-shift operation lever 216 is operated in a traveling neutral state, the aircraft does not move forward when traveling is resumed, and only the seedling planting unit 16 can be prevented from moving. It is prevented from being released without being planted, and fewer seedlings are wasted.
When the sub-shift operation lever 216 is operated to the traveling state, the rotation of the rotation arm 104 and the support arm 102 is restricted, so that the rotation arm 104 and the support arm 102 rotate during acceleration / deceleration during traveling. As a result, it is possible to prevent the fertilizer mounting table 105 from protruding forward or to the side of the fuselage, so that it can be prevented from coming into contact with a power pole or an oncoming vehicle during traveling on the road, enabling safe traveling on the road and fertilizer. Damage to the mounting table 105 is prevented.
FIG. 34 is a plan view of the fertilizer mounting table 105 configured so as not to support the fertilizer bag at a position along the rotation trajectory of the fertilizer mounting table 105.
With the above configuration, when the fertilizer mounting table 105 is moved, the outer side of the body of the fertilizer mounting table 105 does not protrude, so that the fertilizer mounting table 105 is prevented from contacting an obstacle such as a wall, and the fertilizer mounting table 105 is damaged. In addition, the fertilizer bag is prevented from dropping due to the impact of contact, and the work of picking up the fertilizer bag becomes unnecessary, reducing the labor of the operator.
In the said structure, depending on the magnitude | size of a fertilizer bag, a part of mounted fertilizer bag will hang down to a removal part with weight. Thereby, although the stability at the time of placement is slightly lowered, when replenishing the fertilizer to the fertilizer application device 17, it becomes easy to empty the drooped portion of the fertilizer bag and discharge the fertilizer from that portion. Sometimes the operator does not need to lift the fertilizer bag, reducing the labor of the operator.

16 Seedling planting part 17 Fertilizer 19 Preliminary seedling frame 101 Mounting stay (mounting member)
102 Support arm (support member)
103 1st rotation pin (1st fulcrum member)
104 Rotating arm (Rotating member)
105 Fertilizer mounting table (fertilizer mounting member)
106 2nd rotation pin (2nd fulcrum member)
109 Third pivot pin (third fulcrum member)
114 Boss (Cylinder member)
114a Concave 115 Lock projection (regulation projection)
117 Push-up spring (push-up member)
118 Lowering switch (lowering detection member)
200 Drawing marker (drawing member)
201 Marker switching motor (switching actuator)

Claims (7)

A seedling planting part (16) for planting seedlings in a field is provided on the machine body so that it can be moved up and down, a fertilizer device (17) for supplying fertilizer to seedlings planted by the seedling planting part (16) is provided, and spare seedlings are loaded. A preliminary seedling frame (19) to be provided, a fertilizer placement member (105) for loading fertilizer,
A seedling transplanter characterized in that the fertilizer placement member (105) can be switched between a loading operation position protruding from the machine body and a replenishment operation position approaching the fertilizer application (17). A mounting member (101) for mounting the preliminary seedling frame (19) is provided at the front of the machine body, and a support member (102) facing the outside of the machine body is provided on the mounting member (101). A rotating fulcrum member (103) is provided, a rotating member (104) that rotates in the longitudinal direction of the machine body is provided around the first fulcrum member (103), and the fertilizer is placed on the rotating member (104). Providing a member (105);
When the rotating member (104) is rotated to the front side or the side of the machine body, the fertilizer placing member (105) is placed in a loading operation position protruding from the body to the front side or side, and the rotating member. The seedling transplantation according to claim 1, wherein the fertilizer placement member (105) becomes a replenishment work position approaching the fertilizer application (17) when (104) is rotated to the rear side of the machine body. Machine. When the mounting member (101) is provided with a second fulcrum member (106) serving as a fulcrum of rotation of the support member (102), and the support member (102) is rotated toward the front side of the machine body, the fertilizer placement member (105) becomes the loading work position on the inner side or the outer side of the machine body from the spare seedling frame (19),
When the support member (102) is rotated toward the side of the machine body, only one side end of the fertilizer placing member (105) becomes a loading work position protruding from the machine body. The seedling transplanter according to claim 1 or 2.   A cylindrical member (114) is provided at a lower portion of the fertilizer placement member (105), a concave portion (114a) is formed in the cylindrical member (114), and enters the concave portion (114a) to enter the fertilizer placement member (105). When the fertilizer placement member (105) is lowered, the state in which the restriction projection (115) enters the recess (114a) is released and the fertilizer placement member (115) is provided. 115) is configured to be rotatable, and a push-up member (117) for pushing up the fertilizer placing member (105) is provided below the cylindrical member (114). The seedling transplanter described. Left and right switching actuators (left and right drawing actuators (200, 200)) that form straight lines on the left and right sides of the machine body to be used as a guide for straight advancement are provided so as to be movable up and down, and left and right switching actuators (200, 200) are moved up and down. 201, 201),
When the fertilizer placement member (105) is lowered to a position where it can rotate, a lowering detection member (118) that comes into contact with the cylindrical member (114) is provided, and the lowering detection member (118) is provided as the cylindrical member (114). The seedling transplanter according to claim 4, wherein the right and left switching actuators (201, 201) are actuated to lower the left and right drawing members (200, 200) when they come into contact with each other. The pivot member (104) is provided with a third fulcrum member (109) that serves as a pivot point for the fertilizer placement member (105), and the fertilizer placement member (105) is configured to be pivotable in the front-rear direction.
The seedling according to any one of claims 2 to 5, wherein when the fertilizer placement member (105) is rotated, the fertilizer placement member (105) is configured to be movable to a position overlapping the preliminary seedling frame (19) in plan view. Transplanter. The fertilizer placement member (105) is configured not to support the fertilizer outside the machine body from a position along the rotation trajectory of the fertilizer placement member (105). The seedling transplanter according to any one of the above.