JP2012223143A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter restraining shaking of a movable part of a preliminary seedling frame even if a machine body rocks due to roughness or the like of a field, and stably loading loaded replenishment seedling.SOLUTION: The seedling transplanter includes: a traveling vehicle body traveling in the field; a planting part for planting a plurality rows of seedlings by replenishment seedling at the rear thereof; and the replenishment seedling frame for storing a plurality of replenishment seedlings up and down in multistages on the side of the traveling vehicle body. The replenishment seedling frame is provided with a deployment support mechanism 11 for movablly supporting a plurality of seedling placing members 5a and 5b from the multistage storing position to front and rear serial deployment position, and a switching mechanism 14 for switching and holding the position within the movable range of the deployment support mechanism 11. The preliminary seedling frame is provided with an auxiliary placing member 16b for loading replenishment seeding through a support 16a above or below one or more seedling placing members 5a and 5b or one side, and also provided with an urging mechanism 15 for urging and restraining the plurality of seedling placing members 5a and 5b and the movable part of the deployment support mechanism 11.

Description

The present invention relates to a seedling transplanting machine having a seedling placement member configured in a multistage storage shelf shape and having a spare seedling frame for storing and loading a supplementary seedling for supplying to a planting unit.

  As shown in Patent Document 1, a seedling placement member configured to store and load a mat-shaped supplementary seedling for replenishing a planting part is provided with a spare seedling frame configured in a three-stage storage shelf at left and right positions of a cab. A seedling transplanter is known. These left and right spare seedling frames are respectively connected in series in the front-rear direction of the fuselage by supporting the seedling placement member in a front-rear direction by moving and supporting it with a deployment support mechanism that moves the seedling placement member back and forth. Can be expanded to operate. By deploying this spare seedling frame in series before and after loading of supplementary seedlings at the end of the field, it is possible to easily carry in the supplementary seedlings from the heel position without losing the work space on the machine, and the multistage storage arrangement It is possible to plant and travel in the field after returning to the position.

JP 2009-232809 A

  However, although the preliminary seedling frame is positioned by the stopper in the series deployed state and the multistage stowed state, respectively, the link of the deployment support mechanism is rotatable, so that the operator moves and plantes when loading the supplementary seedling. If the machine shakes due to unevenness of the field at the time, the link of the deployment support mechanism may move and the loaded supplemental seedling may fall, and as a result, the operator must collect the dropped supplemental seedling, Not only does this cause a problem of reduction and an increase in the burden on the worker, but the seedlings are damaged, leading to problems such as poor growth and withering.

  An object of the present invention is to provide a seedling provided with a spare seedling frame that can suppress the fluctuation of the movable part of the spare seedling frame even if the machine body is shaken due to unevenness in the field, etc., and can be stably loaded without dropping the supplied seedling The purpose is to provide a transplanter.

  The invention of claim 1 includes a traveling vehicle body (3) provided with a front wheel (2a) and a rear wheel (2b) for traveling in a field, and a plurality of strips by replenishing seedlings (M) at the rear of the traveling vehicle body (3). And a reserve seedling frame (5) for storing a plurality of supplementary seedlings in a vertical direction at the side of the traveling vehicle body (3). ) Includes a deployment support mechanism (11) that supports a plurality of seedling placement members (5a, 5b) in a range from a multistage storage arrangement to a front and rear series deployment arrangement, and a multistage storage of the deployment support mechanism (11). In the seedling transplanting machine provided with a switching mechanism (14) for switching and holding the arrangement within the range of the arrangement and the series deployment arrangement, the preliminary seedling frame (5) includes one or more seedling placement members (5a, 5b). An auxiliary mounting member (16b) for loading a replenishment seedling through a support (16a) on the upper and lower sides or on either side of A plurality of seedling mounting member (5a, 5b) and characterized in that a biasing mechanism (15, 31) for urging constraining the movable part of the expanded support mechanism (11).

  The preliminary seedling frame (5) is provided by providing the auxiliary placement member (16b) on the seedling placement members (5a, 5b) in a multistage storage arrangement that is movably supported by the deployment support mechanism (11). The load capacity of (5) can be increased, and by providing the urging mechanism (15, 31) for the movable part, the reserve seedling frame (5 ) Is restrained.

According to a second aspect of the present invention, in the configuration of the first aspect, the biasing mechanism is configured by a pressure regulating member (15) that connects the movable portion of the movable height range of the seedling placement member (5b) in the lower storage position. The pressure regulating member (15) is arranged at a position lower than the storage position of the seedling placement member (5b).
Since the urging mechanism is configured by the pressure regulating member (15) lower than the storage height of the lower seedling placement member (5b), the urging mechanism (15) can move the movable part without obstructing the operator's view. Works.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the pressure regulating member (15) for connecting the urging mechanism to a movable portion within a movable height range of the seedling placement member (5a) at the upper storage position. The pressure regulating member (15) is arranged higher than the storage position of the seedling placement member (5a).
Since the biasing mechanism is configured by the pressure regulating member (15) higher than the storage height of the upper seedling placement member (5a), unstable free movement of the movable part is suppressed, and the spare seedling frame (5 A large space is secured at the bottom.

Invention of Claim 4 provides the seedling mounting member (5c) of the middle stage in the structure of any one of Claims 1 to 3 between the seedling mounting members (5a, 5b) of the multistage storage arrangement, An action link (12) connected to the middle seedling placement member (5c) to rotate the upper and lower seedling placement members (5a, 5b) to the series deployed position, and the middle seedling placement member (5c) The upper and lower restriction links (12a, 12b) that respectively regulate the postures of the upper and lower seedling placement members (5a, 5b) constitute the deployment support mechanism (11), and the upper and lower restriction links (12a , 12b) and the pressure adjusting members (31) that act to rotate each other to constitute the urging mechanism, and the movable ends of the upper and lower restriction links (12a, 12b) are rotated in the movable end direction. The pressure regulating member (31) is disposed at a position beyond the fulcrum where the power is applied. And wherein the door.
An urging mechanism is constituted by a pressure regulating member (31) that connects the upper and lower restricting links (12a, 12b) to act on each other, and the movable ends of the restricting links (12a, 12b) are movable toward each other. Since the pressure adjusting member (31) is arranged at a position beyond the fulcrum where the rotational force is applied, the tensioning member (31) can freely operate the expansion support mechanism (11) in the entire movable range from the retracted state to the expanded state. Be regulated.

According to a fifth aspect of the present invention, in the configuration according to any one of the first to fourth aspects, the switching mechanism is a transmission gear mechanism (14) by electric control that drives the deployment support mechanism (11) within its movable range. ).
The unfolding support mechanism (11) is switched between the “retracted state” and the “deployed state” by a transmission gear mechanism (14) by electric control that constitutes a switching mechanism.

According to a sixth aspect of the present invention, in the configuration of the fifth aspect, the transmission gear mechanism (14) is an eccentric gear mechanism.
By making the drive torque of the eccentric gear mechanism (14) correspond to the load change due to the movable position of the deployment support mechanism (11), the switching mechanism can be operated with a constant drive load.

The invention according to claim 7 is the configuration according to any one of claims 1 to 6, wherein the unfolding support mechanism (11) is supported by a base frame (13) constituting a base portion of the preliminary seedling frame (5). In addition, an auxiliary mounting member (51) for loading a supplementary seedling is connected to the upper ends of a plurality of support links (52, 52) pivotally supported by the base frame (13) so as to be able to rotate back and forth, and is supported in a movable manner. The interlocking mechanism (53) for moving the auxiliary placement member (51) backward from the position above the seedling placement member (5a) at the upper storage position in conjunction with the deployment operation of the deployment support mechanism (11). It is provided in the support link.
The auxiliary placement member (51) for loading the replenishment seedling is connected to the upper ends of the plurality of support links (52, 52) and is supported movably back and forth, and the support link (52) when the deployment support mechanism (11) is deployed. , 52) are interlocked by the interlocking mechanism (53), and the auxiliary mounting member (51) is moved backward from the upper position of the seedling mounting member (5a) at the upper storage position.

The invention according to claim 8 is the structure according to any one of claims 1 to 6, wherein the unfolding support mechanism (11) is supported by a base frame (13) that constitutes a base of the preliminary seedling frame (5). In addition, an auxiliary placement member (41) for replenishing seedlings is connected to the upper ends of a plurality of support links (42, 42) pivotally supported back and forth on the base frame (13), and is movably supported. An interlocking mechanism (43) for moving the auxiliary placing member (41) forward from a position above the seedling placing member (5a) at the upper storage position in conjunction with the unfolding operation of the unfolding support mechanism (11). (42, 42).
The auxiliary placement member (41) for loading the replenishment seedling is connected to the upper ends of the plurality of support links (42, 42) and is supported movably back and forth, and the support link (42) when the deployment support mechanism (11) is deployed. , 42) are interlocked by the interlocking mechanism (43), and the auxiliary mounting member (41) is moved forward from the upper position of the seedling mounting member (5a) in the upper storage position.

  According to the invention of claim 1, the preliminary seedling frame (5) is provided with the auxiliary placement member (16b) on the seedling placement member (5a, 5b) of the multistage storage arrangement that is movably supported by the deployment support mechanism (11). As a result, it is possible to increase the loading amount of the reserve seedling frame (5) and to provide the urging mechanism (15, 31) to the movable part, so that the body can be tilted or shaken due to the unevenness of the field. Since the movable part of the reserve seedling frame (5) is urged and restrained without shaking, the frequency of returning to the replenishment seedling replenishment place is reduced, the work efficiency is improved, and the loaded replenishment seedling is not dropped without dropping. It is stably loaded on the placing members (5a, 5b), the work of picking up the seedling is omitted, and the labor of the operator is reduced.

  According to the invention of claim 2, in addition to the effect of claim 1, the biasing mechanism is constituted by the pressure regulating member (15) lower than the storage height of the lower seedling placement member (5b). Since (15) acts on the movable part without obstructing the operator's field of view, the unstable free movement of the movable part can be suppressed, and the operator can operate the aircraft while viewing the farm scene. The planting accuracy of the seedling is improved because it becomes easier to go straight.

  According to the invention of claim 3, in addition to the effect of claim 1 or 2, the biasing mechanism is constituted by the pressure regulating member (15) higher than the storage height of the upper seedling placement member (5a). Therefore, the unstable free movement of the movable part can be suppressed, and a large space can be secured below the reserve seedling frame (5), so it is easy to get into the machine from the front of the machine at the end of the field, improving work efficiency. To do. In addition, since other work members can be arranged in the lower part of the reserve seedling frame (5), it is possible to deal with various work and work adaptability is improved.

  According to the invention of claim 4, in addition to the effect of any one of claims 1 to 3, the pressure regulating member (31) that connects the upper and lower restricting links (12 a, 12 b) and acts on each other to rotate is attached. Since the pressure regulating member (31) is disposed at a position beyond the fulcrum where the rotational force acts in the direction of the movable end at the movable end of each of the upper and lower restriction links (12a, 12b). The tension member (31) regulates the free movement of the deployment support mechanism (11) over the entire movable range until the state, and the movable part of the preliminary seedling frame (5) fluctuates even if the body tilts or swings due to the unevenness of the field. Therefore, it is possible to prevent the loaded seedling from falling from the spare seedling frame (5), and the work of picking up the seedling is omitted, thereby reducing the labor of the operator.

  According to the invention of claim 5, in addition to the effect of any one of claims 1 to 4, the deployment support mechanism (11) is provided with a “storage state” by a transmission gear mechanism (14) by electric control that constitutes a switching mechanism. ”And“ deployed state ”, it is not necessary for the operator to switch manually, and the work efficiency is improved.

  According to the invention of claim 6, in addition to the effect of claim 5, the operation of the switching mechanism is made constant by making the driving torque of the eccentric gear mechanism (14) correspond to the load change due to the movable position of the deployment support mechanism (11). Therefore, when there is an imbalance of the movable part due to an additional stage or the like, it is possible to reduce the manufacturing cost and the operation cost by saving energy by using a small output actuator.

  According to the invention of claim 7, in addition to the effect of any one of claims 1 to 6, the auxiliary placement member (51) for loading the supplementary seedling is connected to the upper ends of the plurality of support links (52, 52). When the deployment support mechanism (11) is deployed, the support links (52, 52) are interlocked by the interlock mechanism (53), and the auxiliary placement member (51) is placed on the upper storage position. Since it is moved rearward from the upper position of the member (5a), it is possible to secure loading of a large number of supplementary seedlings by the auxiliary mounting member (51) without interference with the movable range of the seedling mounting member (5a). Since the auxiliary mounting member (51) moves to the low position, it becomes easier for the operator to load the replenished seedlings, and the work efficiency is improved, and the auxiliary mounting member (51) is planted from the multistage storage position to the rear side of the aircraft. Since it moves to the vicinity of the attachment part (4), the replenishment seedling is planted (4) Work efficiency at the time of the movement is to improve.

  According to the invention of claim 8, in addition to the effect of any one of claims 1 to 6, the auxiliary placement member (41) for loading the supplementary seedling is connected to the upper ends of the plurality of support links (42, 42). When the deployment support mechanism (11) is deployed, the support links (42, 42) are interlocked by the interlock mechanism (43) so that the auxiliary placement member (41) is placed on the seedling placement in the upper storage position. Since it is moved forward from the upper position of the member (5a), the auxiliary placement member (41) secures the loading of many supplementary seedlings without interference with the movable range of the seedling placement member (5a). Since the auxiliary mounting member (41) moves to a low position, it becomes easier for an operator to load the supplementary seedlings, and the work efficiency is improved. Further, since the auxiliary mounting member (41) moves to the front side of the aircraft, It becomes easier to load supplementary seedlings into the spare seedling frame from the end of the field Work efficiency can be improved.

Plan view of an 8-row seedling transplanting machine to which the present invention is applied Side view of main part of spare seedling frame in multistage storage arrangement Operation side view of the configuration example of the spring biasing mechanism Side view of unfolding operation of configuration example of urging mechanism of upper structure Plan view (a) and operation side view (b) when the seedling frames of the paste machine are deployed in series Side view of essential parts of multistage storage position (a) and series deployed position (b) of still another configuration example of the urging mechanism Side view of main part of switching mechanism Configuration side view of another configuration example of the upper extension stage Configuration side view of yet another configuration example of the upper extension stage Side view of the main part in the expanded state of the configuration example of the lower extension stage Side view of the expanded state of the incidental configuration example of the upper extension stage Side view of another interlocking mechanism in the upper extension stage Side view (a) and enlarged view (b) of another interlocking mechanism of the upper extension stage

Embodiments of the invention specifically configured based on the above technical idea will be described below in detail with reference to the drawings.
FIG. 1 is a plan view of an 8-row seedling transplanter. The seedling transplanting machine 1 includes a traveling vehicle body 3 provided with front wheels 2a and 2a and rear wheels 2b and 2b for traveling in a field, and a replenishment received in a seedling tank 4a for each planting section at the rear part of the traveling vehicle body 3. A planting part 4 for planting a plurality of seedlings with seedlings, and a plurality of preliminary seedling platforms 5a, 5b, 5c, which are seedling placement members for storing supplementary seedlings supported on both sides of the traveling vehicle body 3, are moved up and down. The spare seedling frame 5 is configured to be stored in three stages, and the cab 6 and the like including steering devices such as the steering handle 6a and the cockpit 6b are provided.

  As shown in the enlarged side view of FIG. 2, the reserve seedling frame 5 includes a plurality of reserve seedling platforms 5a, 5b, and 5c for storing supplementary seedlings, and these preliminary seedling platforms 5a, 5b, and 5c. The deployment support mechanism 11 is configured to support a plurality of preliminary seedling platforms 5a, 5b, 5c in a multi-stage storage configuration, and the preliminary seedling platform 5c arranged in the middle stage is the center. The base frame 13 is configured to support a composite link that supports the upper seedling stand 5a arranged at the upper stage at the front end position and the lower seedling seed stand 5b at the rear end position so as to be movable forward and backward.

  More specifically, a fulcrum 11a... Is provided on each of the preliminary seedling platforms 5a, 5b, 5c, and the action link 12 is connected to each of the preliminary seedling platforms 5a, 5b, 5c, and the intermediate preliminary seedling platform 5c. A composite link is configured by a restriction link 12a that relatively regulates the attitude of the upper stage seedling stage 5a and a regulation link 12b that relatively regulates the attitude of the lower stage seedling stage 5b with respect to the middle stage seedling stage 5c. Then, the action link 12 and one restriction link 12b are pivotally supported on the two fulcrums 13a and 13a provided on the base frame 13.

  The action link 14 is provided integrally with the action link 12, and the action gear 14 is a fan-shaped partial gear if necessary. The action link 14 extends to a deployed position where the preliminary seedling platforms 5a, 5b, 5c in the multistage storage position are arranged in series in the front-rear direction. A spring that constitutes a switching mechanism that is held at both movable end positions by an actuator 14a that can be electrically controlled within a range, and that biases and restrains movable parts such as the composite links 12, 12a, 12b and the spare seedling platforms 5a, 5b, 5c A pressure adjusting member such as 15 is attached to the base frame 13 to constitute an urging mechanism.

  Further, one or more auxiliary seedling platforms 5a, 5b, and 5c of the preliminary seedling frame 5 are provided with auxiliary seedling platforms 16b that are auxiliary mounting members for supplying supplementary seedlings on the upper and lower sides or on either side of the support 16a. To form an expansion stage. For example, the auxiliary seedling stage 16b is disposed above the preliminary seedling stage 5a at the upper storage position developed in series at the foremost position via the support 16a.

  By constructing the preliminary seedling frame 5 as described above, the preliminary seedling frames 5 and 5 supported on both sides of the traveling vehicle body 3 in which a plurality of seedlings are planted by the planting unit 4 are stored in three stages. The spare seedling platforms 5a, 5b, 5c having the configuration can be developed in series in the front and rear directions by the deployment support mechanism 11, and the auxiliary seedling loading platforms 5a, 5b, 5c are provided for supporting supplementary seedlings via the support 16a. Since the additional stage is formed by providing the seedling stage 16b, the four-stage storage configuration including the additional stage is secured on the machine while ensuring the series expansion operation of the preliminary seedling stage 5a, 5b, 5c. After securing the work space, the storage amount of the supplementary seedlings can be increased to cope with multi-row planting such as 8-row planting.

  In addition, since the auxiliary seedling stand 16b of the additional stage is arranged above the preliminary seedling stand 5a at the foremost position at the time of series deployment, when the supplementary seedling is loaded from the front of the preliminary seedling stand 5a at the front end by series deployment In addition, the auxiliary seedling stage 16b arranged on the upper stage of the preliminary seedling stage 5a can be loaded in the same manner as the preliminary seedling stage 5a.

  In this case, as shown in the operation side view of FIG. 3, the urging mechanism of the preliminary seedling frame 5 is configured so that the pressure adjusting member by the spring 15 or the like attached to the base of the base frame 13 is placed at the lower seeding stand. 5b is configured. Since the spring 15 exerts a resilient force from the lower side of the movable part over the entire movable range including the deployed position, even if the machine body is tilted or shaken due to unevenness in the field, the reserve seedling frame 5 is not shaken. The frequency of returning to the replenishment seedling replenishment location can be reduced, the work efficiency can be improved, and the loaded replenishment seedlings can be stably loaded on the spare seedling platforms 5a, 5b, 5c without falling. This eliminates the work of picking up and reduces the labor of the operator.

Further, the composite links 12, 12a, 12b of the reserve seedling frame 5 are arranged so that the upper and middle standby seedling platforms 5a, 5c are on the front side when the preliminary seedling platforms 5a, 5b, 5c are moved from the multistage storage position to the deployment position. The number of the spare seedling stage (2) that moves to the rear side, and the number of the spare seedling stage (2) that moves to the rear side is two. Furthermore, when the auxiliary seedling stage 16b is moved to the unfolding position on the side (front side) where the number of spare seedling stages to be moved out of the movement to the front side and the movement to the rear side is increased, Since it is supported integrally with the upper stage seedling stage 5a that is the last stage (front end) spare seedling stage, this unbalance increases the movement load of the preliminary seedling stage. (Spring 15) moves from the multistage storage position to the deployment position In the starting end in the extent to urge the movement, at the end side of the moving stroke urging direction is turned by at beyond dead center of the spring 15 can be restrained by suppressing Kase by the unbalance. On the contrary, the movement is urged on the start end side during the movement process from the unfolding position to the multistage storage position, and the urging direction is changed by exceeding the dead point of the spring 15, and the upper and middle preliminary seedling platforms 5a, 5c, and On the terminal side in the moving stroke after the moving direction of the auxiliary seedling placing table 16b turns downward, it is possible to restrain the urging by the unbalance and restrain it. Therefore, the preliminary seedling stage and the auxiliary seedling stage can be moved smoothly.

  Further, a pressure regulating member such as a spring 15 is connected to a movable part of the movable height range of the preliminary seedling stage 5b in the lower storage position, and this pressure regulating member is supported by a fulcrum 13b formed at a low position of the base frame 13. Since the biasing mechanism is configured at a position lower than the storage position of the preliminary seedling platform 5b, the pressure adjusting member is lower than the storage height of the lower preliminary seedling platform 5b, so that the auxiliary seedling platform 16b is included. For all the spare seedling platforms 5a, 5b, 5c, a view of the replenishment seedling loading portion in the entire movable range from the multistage storage position to the series expansion position is secured, and the urging mechanism is a movable portion without blocking the worker's view. Therefore, the unstable movement of the movable part can be suppressed, and the operator can operate the machine while observing the field scene, and it is easy to move the machine straight. It is possible.

  In addition, by using a pressure adjusting member that is biased in the direction of the movable end by an extension type spring damper, a gas damper or the like instead of the tension type spring 15, the restraint of the movable part is ensured and the switching mechanism is controlled. Therefore, the movable part can be stably held at both movable ends of the multistage storage position and the serially deployed position.

  Next, a configuration example of the urging mechanism of the upper portion of the preliminary seedling frame 5 will be described. As shown in the operation side view of the unfolded position in FIG. A pressure adjusting member such as a spring 15 is connected to a movable portion of the movable height range of the movable height range, and the pressure adjusting member is lifted from a storage position of the preliminary seedling stand 5a by a fulcrum 13c formed at a high position by raising the base frame 13. Install in a high position.

  Since the urging mechanism having the above-described configuration is configured by a pressure adjusting member that is mounted higher than the storage height of the upper preliminary seedling stage 5a, the unstable operation of the movable part is suppressed, and the preliminary seedling frame 5 Since a large space can be secured in the lower part, it becomes easier to get into the aircraft from the front side of the aircraft at the end of the field, so work efficiency is improved. In addition, other work members can be arranged at the lower part of the reserve seedling frame 5 and can cope with various work, so work adaptability is improved.

  In this case, the preliminary seedling frame 5 of the paste machine includes the preliminary seedling support 5a at the front and rear positions in the serial expansion position, as shown in the plan view (a) and the operation side view (b) at the time of serial expansion in FIG. About the reserve seedling stand 5c which becomes the intermediate position of 5b, it comprises in the position which matched the opening 21 with a lid | cover with the paste fertilizer filling port 22. FIG. When filling the paste fertilizer, the paste fertilizer can be efficiently filled into the paste fertilizer filling port 22 through the space secured below by opening the opening 21 of the preliminary seedling stage 5c. The operability of the machine can be improved.

  Next, another structural example of the urging mechanism of the preliminary seedling frame 5 will be described. As shown in the side view of the main part of the multistage storage position (a) and the series expansion position (b) in FIG. The upper and lower restriction links 12a and 12b of the position of the preliminary seedling mounts 5a and 5b at the positions are connected by the fulcrum oversprings 31 in the vicinity of the fulcrums 11a and 11a that are connected to the intermediate preliminary seedling support 5c, respectively. The movable part of the spare seedling frame 5 can be moved by applying a rotational force between the restriction links 12a and 12b and by applying a rotational force in the movable end direction at both movable ends of the multistage storage position and the series deployment position. A compact urging mechanism that is stably held at the end can be configured.

  That is, the moment arms 32 and 32 are integrally formed by bending from one end of the upper and lower restricting links 12a and 12b to form the load fulcrums 32a and 32a of the spring 31, respectively. These load fulcrums 32a and 32a are respectively arranged in a multistage storage position and a series deployed position, with a straight line L passing through the two fulcrums 11a and 11a connected to the intermediate stage seedling stand 5c between them, When the load fulcrums 32a and 32a are simultaneously positioned on the straight line L and exceed the fulcrum at an intermediate position with respect to the series deployed position, the moment in the same direction is arranged to act on the upper and lower restricting links 12a and 12b.

  In the urging mechanism configured as described above, the tensile force of the spring 31 acts on the load fulcrums 32a and 32a, and the two load fulcrums 32a and 32a under the action are directed to the movable end on the side to which they belong, with the straight line L as a boundary. Since the moment in the direction acts on the upper and lower restricting links 12a and 12b, the compact energizing mechanism is used to select any position in the entire movable range of the movable part of the spare seedling frame 5 except for the intermediate position that exceeds the fulcrum. Thus, the free movement of the movable part can be suppressed and stably held.

Next, the drive mechanism of the deployment support mechanism will be described.
As shown in the side view of the main part of FIG. 7, the drive mechanism of the unfolding support mechanism does not require a manual worker load and switches and drives the movable part in response to an unbalance due to an expansion stage or the like. In addition, the unfolding support mechanism 11 is constituted by an electrically controlled gear mechanism that is driven within its movable range. That is, the action link 12 is pivotally supported on the fulcrum 13a of the base frame 13, and the action gear 14 is provided integrally with the action link 12 in common with the axis, and the pinion 14a meshing with the action gear 14 is electrically controlled by the reduction motor. The movable part can be held in a required position by being driven as possible.

  Further, the gear mechanism composed of the working gear 14 and the pinion 14a transmits the driving torque in an eccentric manner corresponding to the load change caused by the movable position of the deployment support mechanism 11, so that the switching mechanism can be operated with a constant driving power. Therefore, in the case where the driving load of the movable range changes due to the unbalanced configuration by the auxiliary seedling stage 16b provided on the upper side of the upper stage seedling stage 5a, there is insufficient torque without requiring an assist biasing mechanism. This makes it possible to stably move the moving parts, reduce manufacturing costs with low-power actuators, and reduce operating costs through energy savings. Is made uniform.

  Next, another configuration example of the upper extension stage will be described. As shown in the configuration side view of FIG. 8, the preliminary seedling stand 5a is arranged from the upper part of the base frame 13 that supports the deployment support mechanism 11 of the preliminary seedling frame 5. The auxiliary seedling table 41 for loading the supplementary seedlings is movably supported at a position above, and the auxiliary seedling table 41 constitutes an uppermost extension stage that can move forward in conjunction with the expansion operation of the expansion support mechanism 11.

  Specifically, two fulcrum points 13d and 13d are provided in the front and rear arrangement at the upper end portion of the base frame 13, and a plurality of support links 42 and 42 hold a predetermined posture above the two fulcrum points 13d and 13d. The auxiliary seedling mount 41 is supported by the front and rear fulcrums 41a and 41a, and a linking point 43d of one of the support links 42 is connected to a linkage mechanism 43 by a gear train that meshes with the action gear 14 of the deployment support mechanism 11. By the tilting operation of the support link 42 by the interlocking mechanism 43, the auxiliary seedling stage 41 is configured to move forward from the upper position of the preliminary seedling stage 5a in the upper storage configuration.

  The auxiliary seedling mount 41 having the above-described configuration is connected to the upper ends of the plurality of support links 42 and 42 and is supported movably back and forth. When the deployment support mechanism 11 is deployed, the linkage link 43 supports the support link 42 according to the gear ratio. , 42 are tilted, and the auxiliary seedling table 41 is moved forward from the upper position together with the preliminary seedling table 5a in the upper storage position.

  Therefore, the auxiliary seedling stage 41 having no interference operation with the movable range of the preliminary seedling stage 5a can constitute the preliminary seedling frame 5 with the minimum height at equal intervals in all stages, and a large number of supplementary seedlings can be loaded. Since the arrangement height of the auxiliary seedling stage 41 is moved from the uppermost position to the low position by the deployment operation of the deployment support mechanism 11, the loading operation efficiency of the supplementary seedlings can be improved.

  In addition, since the auxiliary seedling stage 41 is moved from the multistage storage position to the front side of the machine body by the deployment operation of the deployment support mechanism 11, the work efficiency when loading the supplementary seedlings into the spare seedling frame 5 from the field end in front of the machine body is improved. be able to. Furthermore, by setting the gear ratio of the interlocking mechanism 43 to be small so that the auxiliary seedling table 41 is held high in the vicinity of the operator of the cab 6, the preliminary seedling tables 5a, 5b, While securing the operation space of 5c, the auxiliary seedling stage 41 can be used as an empty box storage place for seedlings and work can be efficiently performed on a small machine.

  Next, another structural example of the upper extension stage will be described. As shown in the side view of the operation description of FIG. 9, the preliminary seedling platform is arranged from the upper part of the base frame 13 that supports the deployment support mechanism 11 of the preliminary seedling frame 5. The auxiliary seedling stage 51 for loading supplementary seedlings is movably supported above the position 5a, and the auxiliary seedling stage 51 constitutes the uppermost extension stage that can move backward in conjunction with the deployment operation of the deployment support mechanism 11. .

  Specifically, two fulcrum points 13d and 13d are provided in the front-rear arrangement at the upper end portion of the base frame 13, and a plurality of support links 52 and 52 hold a predetermined posture above the two fulcrum points 13d and 13d. The auxiliary seedling stage 51 is supported by the front and rear fulcrums 51a, 51a, and a linkage mechanism 53 is connected to the fulcrum 13d side of one of the support links 52 by a gear train that meshes with the action gear 14 of the deployment support mechanism 11. By the tilting operation of the support link 52 by the interlocking mechanism 53, the auxiliary seedling stage 51 is configured to move backward from the upper position of the preliminary seedling stage 5a in the upper storage configuration.

  The auxiliary seedling stage 51 having the above-described configuration is connected to the upper ends of the plurality of support links 52 and 52 and is supported in a movable posture in the front and rear directions. When the deployment support mechanism 11 is deployed, the support links 52 and 52 are moved by the interlocking mechanism 53. The auxiliary seedling stage 51 is tilted according to the gear ratio, and the auxiliary seedling stage 51 is moved backward from the upper position of the preliminary seedling stage 5a in the upper storage arrangement.

  Therefore, the auxiliary seedling stage 51 having no interference operation with the movable range of the preliminary seedling stage 5a can constitute the preliminary seedling frame 5 with the minimum height at equal intervals in all stages, and a large number of supplementary seedlings can be loaded. Since the arrangement position of the auxiliary seedling stage 51 is moved to the front low position by the unfolding operation of the unfolding support mechanism 11, the loading work efficiency of the supplementary seedling can be improved. Moreover, since the auxiliary seedling stage 51 moves to the vicinity of the planting unit 4 on the rear side of the machine body, the efficiency of the work of supplying the supplementary seedlings to the planting unit 4 can be improved, and the planting unit 4 is replenished. By using the auxiliary seedling platform 51 as an empty box storage place for the seedlings, the work can be efficiently performed on a small machine.

  Next, a configuration example of the lower extension stage will be described. As shown in the side view of the main part in the unfolded state of FIG. By constructing and forming a lower additional stage by providing an auxiliary seedling stage 16b for loading supplementary seedlings below the supporting seedling stage 5b via a support 16a on the lower surface side of the reserve seedling stage 5b, the auxiliary seedling stage 16b is more In addition, it is possible to secure a wide operation space for loading the supplementary seedlings on the upper side of the preliminary seedling placing stand 5b in the series development state.

  Next, an example of the incidental configuration of the upper extension stage will be described. As shown in the side view of the expanded state in FIG. 11, the expansion support mechanism 11 is configured so that the preliminary seedling placing stand 5a in the upper storage arrangement can be expanded in series in the front F. In the case where the auxiliary seedling table 16b is provided on the upper side of the preliminary seedling table 5a via the support column 16a, the counterweight 61 is attached to the lower surface side of the lower seedling table 5b in the lower storage arrangement so that the spring A space-saving configuration can be achieved without requiring an urging member.

  Next, a configuration example of another interlocking mechanism in the upper extension stage will be described. As shown in a side view of FIG. 12, the upper storage arrangement is arranged from the upper part of the base frame 13 that supports the deployment support mechanism 11 of the preliminary seedling frame 5. An auxiliary seedling stage 71 for loading supplementary seedlings is movably supported above the preliminary seedling stage 5a so as to be movable up and down. The auxiliary seedling stage 71 is interlocked with the deployment operation of the deployment support mechanism 11 by an interlocking mechanism 72. The uppermost expansion stage is configured to be able to move up.

  More specifically, a support 71a is slidably fitted to the base frame 13 so as to be movable up and down, and an auxiliary seedling support 71 for loading a supplementary seedling is placed above the preliminary seedling support 5a in the upper storage position via the support 71a. In addition, the groove cam 72 is formed on the action gear 14 of the deployment support mechanism 11 so as to move the support 71a up and down, thereby assisting the seedling with a predetermined stroke in conjunction with the tilting operation of the action link 12 of the deployment support mechanism 11. An interlocking mechanism for raising the platform 71 is configured.

  In the auxiliary seedling stage 71 having the above-described configuration, when the preliminary seedling stage 5a, 5b, 5c of the multistage storage arrangement is shifted to the series development arrangement by the development support mechanism 11, the preliminary seedling stage 5a at the upper stage moves forward. At the same time, it is raised to a predetermined height position via an interlocking mechanism by the groove cam 72. As described above, when the preliminary seedling frame 5 is deployed in series, the auxiliary seedling placing base 71 further rises in the upper position in correspondence with the series deployment operation of the preliminary seedling placing base 5a in the upper storage position, Since the supplementary seedlings on 5a do not interfere with the auxiliary seedling placing table 71, the auxiliary seedling placing table 71 as the upper extension stage of the spare seedling frame 5 is easy to use at a relatively low standard position and has a good appearance. Can do.

  Further, as shown in the side view (a) of FIG. 13, an auxiliary seedling stage 71 can be moved up and down with a predetermined stroke above the preliminary seedling stage 5a at the top of the base frame 13 of the preliminary seedling frame 5. The two struts 73, 73 arranged in the front-rear direction to be supported by the slide are fitted. As shown in the enlarged view (b) of the main part of FIG. 13, springs 74 and 74 for elastically supporting at the upper limit position of the slide stroke and an action link of the deployment support mechanism 11 are provided at the bases of these columns 73 and 73. 12 and engaging links 73a and 73a for holding the slide stroke at the lower limit position in the multistage retracted state by interfering with the restriction link 12a.

  The auxiliary seedling placing stand 71 having the above-described configuration is supported by the front and rear support columns 73 and 73 so as to be movable up and down with a predetermined stroke. In the multistage storage state, the engaging portions 73a and 73a are linked to the working links of the deployment support mechanism 11. 12 and the restriction link 12a, the auxiliary seedling table 71 is held at the lower limit position of the slide stroke via both supports 73, 73 against the elastic force of the springs 74, 74, and in a series-deployed state. Then, when the engaging portions 73a and 73a deviate from the interference range of the action link 12 and the restricting link 12a of the deployment support mechanism 11, the upper limit of the slide stroke is established via both struts 73 and 73 by the elastic force of the springs 74 and 74. The auxiliary seedling mount 71 is held at the position.

  As described above, when the preliminary seedling frame 5 is deployed in series, the auxiliary seedling placing base 71 further rises in the upper position in correspondence with the series deployment operation of the preliminary seedling placing base 5a in the upper storage position, Since the supplementary seedlings on 5a do not interfere with the auxiliary seedling placing table 71, the auxiliary seedling placing table 71 as the upper extension stage of the spare seedling frame 5 is easy to use at a relatively low standard position and has a good appearance. Can do.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 3 Traveling vehicle body 4 Planting part 5 Spare seedling frame 5a Reserve seedling stand (seedling placement member)
5b Preliminary seedling stage (seedling placement member)
5c Reserve seedling stand (seedling placement member)
6 cab 11 unfolding support mechanism 11a fulcrum 12 action link (composite link)
12a Restricted link (Composite link)
12b Restricted link (composite link)
13 Base frame 14 Working gear (switching mechanism)
15 Spring (biasing mechanism)
16b Auxiliary seedling stage (auxiliary placement member)
16a support 31 spring (biasing mechanism)
32 Moment arm 32a Load fulcrum 41 Auxiliary seedling stand (auxiliary placement member)
41a fulcrum 42 support link 43 interlocking mechanism 51 auxiliary seedling mount (auxiliary mounting member)
51a fulcrum 52 support link 53 interlocking mechanism F front L straight line

Claims (8)

A traveling vehicle body (3) having a front wheel (2a) and a rear wheel (2b) for traveling in the field, and planting in which a plurality of seedlings are planted with supplementary seedlings (M) at the rear of the traveling vehicle body (3) The auxiliary part (4) and a spare seedling frame (5) for storing a plurality of supplementary seedlings in a vertical direction at the side of the traveling vehicle body (3) are provided. The spare seedling frame (5) includes a plurality of seedlings. A deployment support mechanism (11) that supports the mounting member (5a, 5b) in a range from a multistage storage arrangement to a front and rear series deployment arrangement, and a range of the deployment support mechanism (11) between the multistage storage arrangement and the series deployment arrangement. In the seedling transplanting machine provided with a switching mechanism (14) for switching and holding the arrangement in
The preliminary seedling frame (5) is provided with an auxiliary placement member (16b) for loading a supplementary seedling through a support (16a) on the upper or lower side or one side of one or more seedling placement members (5a, 5b). A seedling transplanting machine comprising a plurality of seedling placement members (5a, 5b) and a biasing mechanism (15, 31) for biasing and restraining a movable part of the deployment support mechanism (11).   The urging mechanism is constituted by a pressure regulating member (15) connected to a movable part within a movable height range of the seedling placement member (5b) in the lower storage position, and the pressure regulating member (15) The seedling transplanter according to claim 1, wherein the seedling transplanter is arranged at a position lower than the storage position of the member (5b).   The urging mechanism is constituted by a pressure regulating member (15) connected to a movable part within a movable height range of the seedling placement member (5a) at the upper storage position, and the pressure regulating member (15) is the seedling placement. The seedling transplanter according to claim 1 or 2, wherein the seedling transplanter is arranged at a higher position than the storage position of the member (5a).   An intermediate seedling placement member (5c) is provided between the seedling placement members (5a, 5b) in the multi-stage storage arrangement, and is connected to the upper and lower seedling placement members (5c). 5a, 5b) and the action link (12) for rotating to the series deployment position, and the posture of the upper and lower seedling placement members (5a, 5b) with respect to the middle seedling placement member (5c), respectively. The unfolding support mechanism (11) is constituted by the upper and lower restriction links (12a, 12b), and the pressure regulating member (31) that acts between the upper and lower restriction links (12a, 12b) to act on each other. The pressure adjusting member (31) is arranged at a position beyond the fulcrum where the urging mechanism is configured and the upper and lower restricting links (12a, 12b) act on the movable ends in the movable ends. The seedling transplanter according to any one of claims 1 to 3.   The said switching mechanism was comprised by the transmission gear mechanism (14) by the electric control which drives the said expansion | deployment support mechanism (11) in the movable range, The any one of Claims 1-4 characterized by the above-mentioned. Seedling transplanter.   The seedling transplanting machine according to claim 5, wherein the transmission gear mechanism (14) is constituted by an eccentric gear mechanism.   A plurality of support links that support the unfolding support mechanism (11) on a base frame (13) that constitutes the base of the preliminary seedling frame (5) and are pivotally supported by the base frame (13) so as to be pivotable back and forth. An auxiliary mounting member (51) for loading a supplementary seedling is connected to the upper end of (52, 52) and is supported in a movable manner, and the auxiliary mounting member (51) is located above the seedling mounting member (5a) in the upper storage position. The link mechanism according to any one of claims 1 to 6, wherein an interlocking mechanism (53) that moves backward from the position in conjunction with the unfolding operation of the unfolding support mechanism (11) is provided on the support link. The seedling transplanter described.   While supporting the said expansion | deployment support mechanism (11) to the base frame (13) which comprises the base part of the said reserve seedling frame (5), several support links (supported by the said base frame (13) so that rotation is possible back and forth) ( 42, 42) is connected to and supported by an auxiliary mounting member (41) for loading a replenishment seedling, and the auxiliary mounting member (41) is positioned above the seedling mounting member (5a) in the upper storage position. The interlocking mechanism (43) that moves forward in conjunction with the unfolding operation of the unfolding support mechanism (11) is provided on the support link (42, 42). The seedling transplanter according to item 1.

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