JP2012170386A5 - - Google Patents

Description

Seedling transplanter

  The present invention relates to a seedling transplanting machine configured so that a seedling mounting base of a multistage storage type preliminary seedling frame on which a mat seedling for replenishment is placed can be developed in series.

  As shown in Patent Document 1, there is known a seedling transplanting machine provided with a spare seedling frame in which a seedling stage on which a mat seedling for replenishment is placed is configured in multiple stages. This spare seedling frame is configured with three stages of upper and lower seedling platforms on both sides of the front part of the machine body, and accommodates mat seedlings for supply in a seedling box for the number of stages without impairing the work space on the machine. In addition, when the seedlings are loaded at the end of the field, the seedlings can be placed up to the heel position by moving and supporting the seedlings in a plurality of stages by moving link members so as to expand to a position in series in the front-rear direction. The seedlings can be easily carried in from the cocoon position by extending the two in series.

JP 2009-232809 A

  However, if the spare seedling frame is moved in the unfolded state, the seedling placed on the spare seedling frame will fall to the field due to the vibration or inclination of the aircraft, and the fallen seedling must be picked up, This will increase the labor of the worker. In addition, when trying to turn at the end of the field in the unfolded state, there is a problem that the front and rear ends of the reserve seedling frame collide with the bank or wall at the end of the field and break.

  An object of the present invention is to avoid an unexpected situation caused by running the aircraft while the spare seedling frames are deployed in series in a seedling transplanter equipped with a spare seedling frame configured to be capable of series deployment of a multistage-accommodated seedling platform. An object is to provide a seedling transplanting machine capable of performing the above.

  The invention according to claim 1 includes a traveling vehicle body (2) that includes an engine (20) and a handle (34) and is supported by a front wheel and a rear wheel (10, 11) so as to be able to travel on the field, and a rear portion of the traveling vehicle body (2). The link mechanism (39a, 39b, 39c) includes a transplant section (4) for planting seedlings in the field and a multi-stage seedling platform (38a, 38b, 38c) for storing seedlings in the front part of the traveling vehicle body (2). A seedling transplanter provided with a switching device (300) for opening and closing the preliminary seedling frame (38) in a range from a multi-stage storage position to a deployment position in series in the front-and-rear direction. , A seedling frame state detection member (39s) for detecting whether the working state of the preliminary seedling frame (38) is the storage position or the unfolding position, and a travel detection member (2s) for detecting whether the machine body is in the traveling state. And travel by the travel detection member (2s) Characterized by providing a notification member (75) for notifying the condition sensing deployment process by seedling frame state detection member (39s) during knowledge.

  Forgetting to store the seedling platform in the spare seedling frame or unforeseen operation by notifying the deployment of the seedling platform when the aircraft is running in accordance with the detection of the deployment of the preliminary seedling frame detected by the seedling frame state detection member. Thus, it is possible to prevent the reserve seedling frame from being transferred.

According to a second aspect of the present invention, in the configuration of the first aspect, the switching device (300) includes a seedling frame state detection member (39s) for detecting a rotation position of the link mechanism (39a, 39b, 39c), and a switching. A rotating member (300g) that is rotated by an actuator (300m) to rotate the link mechanism (39a, 39b, 39c), and the switching device (300) is provided in the reserve seedling frame (38). Features.
In response to the operation of the above switching device, the switching actuator rotates the rotating member to switch the seedling mounting stage of the preliminary seedling frame to the “deployed” and “storing” positions, so that the operator manually switches the seedling mount. There is no need to do this and work efficiency is improved.
Further, the operation of the actuator can be stopped at an arbitrary position by operating the preliminary seedling frame operating member.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the stop pedal (33) for maintaining the travel stop of the traveling vehicle body (2) by a stepping operation, and the stepping operation of the stop pedal (33) are performed. A pedal operation detecting member (33s) for detecting is provided, and when the pedal operation detecting member (33s) detects the depression of the stop pedal (33), the actuator (300m) can be driven and operated. .
When the stop pedal for stopping the aircraft is not operated, it is configured not to accept the operation of the switching device for the spare seedling frame. It is possible to prevent the front-rear balance of the aircraft from changing.

A fourth aspect of the present invention, in the structure according to any one of claims 1 to 3, the handle (34) of said vehicle body (2) includes a pair of preliminary seedling frame operating member (81, 81 ) Are arranged apart from each other, and the actuator (300 m) can be driven and operated when the preliminary seedling frame operating members (81, 81) are simultaneously operated.
By providing a pair of spare seedling frame operating members on the handle and not operating the spare seedling frame actuators even if the spare seedling frame operating members are operated unless both of the pair of spare seedling frame operating members are operated. The operator can operate the preliminary seedling frame at a position away from the preliminary seedling frame.

A fifth aspect of the present invention, in the structure according to any one of claims 1 to 4, wherein the preliminary seedling frame (38) seedling frame state detection member that began switches deployed position from the retracted position ( 39s), the number of revolutions of the engine (20) is increased in conjunction with the driving of the actuator (300m), and the power supply unit (22) is controlled to be charged.
When the spare seedling frame begins to switch from the stored state to the deployed state, the engine speed increases and the amount of power generation increases. By storing this electricity in the battery, it is possible to prevent the switching actuator from operating due to insufficient power. .

According to the invention of claim 1, when the working state of the preliminary seedling frame detected by the seedling frame state detecting member is in the deployed state, it is configured to notify that the seedling stand remains in the deployed state when the aircraft starts to travel. This makes it possible to prevent forgetting to store the seedling stand on the spare seedling frame or to start the standby seedling frame in the unfolded state due to unexpected operations. Damage is prevented and durability is improved.
Further, since the loaded seedling can be prevented from falling from the reserve seedling frame, it is not necessary for the operator to pick up the dropped seedling, and the labor of the operator is reduced.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the switching actuator rotates the rotating member in accordance with the operation of the preliminary seedling frame operating member to “deploy” and “store” the seedling mounting base of the preliminary seedling frame. By switching to the position “”, it is not necessary for the operator to manually switch, and the work efficiency is improved.
In addition, since the operation of the switching actuator can be stopped at an arbitrary position by operating the spare seedling frame operating member, the seedling stage is stopped at an intermediate position between “deployment” and “storage”, and the end of the seedling stage is It is possible to facilitate the loading of the seedling while preventing the spare seedling frame from being broken by deploying it so that it does not hit the field edge.
Since the seedling frame state detection member is provided in the link mechanism, it is possible to determine the degree of expansion of the preliminary seedling frame from the rotation position of the link mechanism. The number of parts is reduced.

According to the invention of claim 3, in addition to the effect of claim 1 or claim 2, the operation of the spare seedling frame switching device is not accepted unless a stop pedal for stopping the aircraft is operated. Therefore, it is possible to prevent the change of the front / rear balance of the machine body by switching the working state of the spare seedling frame by operating the switching device, so that the straightness of the machine body is ensured and the seedling planting accuracy is improved.
Also, the reserve seedling frame is switched to the “deployed state” near the field edge, and the tip of the reserve seedling frame can be prevented from coming into contact with the bank and the wall at the field edge and being damaged. To do.

The invention of claim 4, in addition to the effect of any one of claims 1 to 3, the two spare seedling frame operating member provided on the handle, the two spare seedling frame operating member is both operated pre By operating the seedling frame switching actuator to switch between the deployment and storage positions, the operator needs to operate at the handle operating position away from the spare seedling frame. Is prevented and safety is improved.
Further, since the switching actuator can be stopped if the operation of either one of the preliminary seedling frame operation members is stopped, it can be stopped immediately if a problem occurs in the preliminary seedling frame or its drive unit.

The invention of claim 5, in addition to the effect of any one of claims 1 to 4, the control for increasing the engine speed during the pre seedling frame from the "stored state" to switch to "unfolded state" By performing a configuration that increases the number of revolutions of the engine so that the seedling frame state detection member is charged in the range of the expansion or storage switching operation to the power supply unit that is charged by receiving the driving force of the engine, Even when the switching actuator consumes electricity, electricity is stored in the battery sequentially, so that abnormal operation of other electric devices (headlamps, fertilizer blowers, etc.) due to a decrease in the amount of electricity stored in the battery is prevented.

Side view of the spare seedling frame of the embodiment of the present invention Plan view of the spare seedling frame in FIG. Side view of the spare seedling frame shown in FIG. Side view when the seedling stand of the spare seedling frame in FIG. 1 is deployed. 4 is a plan view of the seedling stage in FIG. 1 is a front view of the spare seedling frame shown in FIG. The side view (a) at the time of storage of the seedling mounting stage of the spare seedling frame other example of FIG. 1 and the front view (b) seen from the body front The partial side view of the reserve seedling frame which provided the electric seedling mounting stand of the Example of this invention The side view of the electric seedling mounting stand of the Example of this invention Sketch drawing showing configuration example of operation member Front view from the front of the body of the seedling stand of the spare seedling frame Side view of the seedling stand of the spare seedling frame Block diagram of system configuration for marker interlock control Flow chart of control by control unit Perspective view of seedling stand Perspective view of essential parts of transplanter with large-capacity spare seedling frame Electric control system block diagram

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
First, a seedling transplanter and its spare seedling frame to which the present invention is applied will be described.
1 and 2 are a side view and a plan view of a seedling transplanter. In this seedling transplanter 1, a transplant part 4 is mounted on the rear side of the traveling vehicle body 2 via a lifting link device 3 so as to be movable up and down, and a main body portion of the fertilizer application device 5 is provided on the rear upper side of the traveling vehicle body 2. The boarding operator refers to the left and right as the forward direction of the seedling transplanter, left and right, respectively, and the forward and backward directions are referred to as forward and backward, respectively.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via the belt transmission device 21 and the HST 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the transplanting unit 4 by the planting transmission shaft 26 and transmitted to the fertilizer application device 5 by the fertilization transmission mechanism 28. Is done.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. A connecting shaft 44 that is rotatably supported by the transplant portion 4 is inserted into and connected to the lower end portion of the vertical link 43, and the transplant portion 4 is connected to be rotatable about the connection shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the cylinder 46 is expanded and contracted by hydraulic pressure. The upper link 40 rotates up and down, and the transplant part 4 moves up and down while maintaining a substantially constant posture.

  The transplanting section 4 has a six-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to supply seedlings to the seedling outlet 51a of each row one by one and for one horizontal row. When all the seedlings are supplied to the seedling outlet 51a,..., The seedling fed to the seedling feed belt 51b,... A seedling planting device 52,..., And a pair of left and right drawing markers 184 for drawing the aircraft path in the next stroke to the topsoil surface. A center float 55 is provided at the center of the transplanted portion 4, and side floats 56, 56 are provided on the left and right sides, respectively. When the aircraft is advanced with these floats 55, 56, 56 in contact with the mud surface of the field, the floats 55, 56, 56 slide while leveling the mud surface, and the seedling planting device 52, Seedlings are planted by ... Each of the floats 55, 56, and 56 is rotatably mounted so that the front end side moves up and down in accordance with the unevenness of the field topsoil surface, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. The planting depth of the seedling is always maintained constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the transplanting unit 4.

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 56 with the fertilizer hoses 62,. Guides (not shown), guided to the fertilizer guide, ... Grooves (not shown) provided on the front side of the fertilizer guide, ... are dropped into the fertilization structure formed near the side of the seedling planting strip. ing. Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. It is designed to be transported.

  A rotor 27 (an example of a combination of the first rotor 27a and the second rotor 27b may be simply referred to as the rotor 27), which is an example of a leveling device, is attached to the transplanting unit 4. In addition, the supply base 51 is configured to slide in the left-right direction using the support roller 65a of the rectangular support frame 65 that is full in the left-right direction and the up-down direction that supports the entire transplanting section 4 as a rail.

  A pair of preliminary seedling frames 38, 38 on which the seedlings for replenishment are placed are placed on the left and right sides of the front part of the traveling vehicle body 2 around a rotating shaft 49a (see FIGS. 4 and 5) extending in the vertical direction. It is provided so as to be rotatable between a position projecting laterally from the body and a position housed inside.

  FIG. 3 shows a side view when the first seedling stage 38a, the second seedling stage 38b, and the third seedling stage 38c on one side of the machine body are arranged in three upper and lower stages, and the first seedling stage 38a, FIG. 4 shows a side view when the second seedling stage 38b and the third seedling stage 38c are arranged on the same plane, and the first seedling stage 38a, the second seedling stage 38b, and the third seedling stage 38c are arranged. FIG. 5 shows a plan view when they are arranged on the same plane, and FIG. 6 shows a front view of the first seedling stage 38a, the second seedling stage 38b, and the third seedling stage 38c as viewed from the front of the machine body.

  Each of the preliminary seedling frames 38 is configured in three upper and lower stages by a link mechanism using an inclined support member, and includes a first seedling mounting base 38a, a second seedling mounting base 38b, and a third seedling mounting base 38c. The center side surface of the uppermost first seedling mounting table 38a and the front side surface of the second seedling mounting table 38b are supported at both ends of the first moving link member 39a so as to be rotatable around the rotation shafts 38a1 and 38b1, respectively. In addition, the rearmost side surface of the uppermost first seedling mounting table 38a and the frontmost side surface of the lowermost seedling mounting table 38c are rotatable around the rotation shafts 38a2 and 38c1, respectively, at both ends of the second moving link member 39b. The side surface of the center part of the second seedling table 38b is supported by the central part of the second moving link member 39b so as to be rotatable around the rotation shaft 38b2, and the end of the second seedling table 38b is supported. The side surface and the central side surface of the lowermost third seedling mounting table 38c are supported at both ends of the third moving link member 39c so as to be rotatable around the rotation shafts 38b3 and 38c2, respectively.

  The second seedling stage 38b is fixed to the machine body, and the first seedling stage 38a and the third seedling stage 38c are arranged above and below the second seedling stage 38b. The first seedling mounting table 38a and the third seedling mounting table 38c are respectively arranged before and after the arrangement and the second seedling mounting table 38b, and the first moving link member 39a and the second moving link member are arranged as a whole. 39b and the third moving link member 39c can be rearranged on substantially the same plane. That is, since the center part of the second moving link member 39b is supported by the rotation fulcrums provided on both sides of the center part of the second seedling mounting base 38b, the second moving link member 39b is rotated. The first and third seedling platforms 38a and 38c are moved forward and backward of the second seedling platform 38b, and the first, second and third seedling platforms 38a, 38b and 38c are arranged on the same plane. A wide placement plane for the seedling tray can be obtained.

  In addition, the first moving link member 39a is connected to the front end portion of the second seedling mounting table 38b, the second moving link member 39b is connected to the rear end portion of the first seedling mounting table 38a, and is connected to the second moving portion. The connecting portion side of the link member 39b on the front end side of the third seedling mounting table 38c and the connecting portion side of the second moving seed member mounting table 38b of the third moving link member 39c are respectively connected to the first moving link member 39a. The first, second, and third auxiliary links 45a, 45b that are short and provided at the link members 39a, 39b, 39c are bent at right angles to the longitudinal direction of the second moving link member 39b, the third moving link member 39c. , 45c to be pivotally connected to the first, second and third seedling mounts 38a, 38b, 38c. In addition, first, second, and third partition plates 48a, 48b, and 48c that prevent the seedling tray from falling are disposed on the left and right side surfaces of the first, second, and third seedling platforms 38a, 38b, and 38c.

  Further, when the first, second and third seedling platforms 38a, 38b and 38c are arranged side by side on the same plane (FIG. 4), the front side and the rearmost portion of the first seedling platform 38a located at the foremost part Since the first stopper 47a and the sixth stopper 47f that have risen upward from the respective planes are raised on the rear side of the third seedling mounting table 38c located at the first seeding table 38c, the first, second, and third seedling mounting tables 38a, When 38b and 38c are arranged side by side on the same plane, the seedling trays placed on the first, second, and third seedling placing stands 38a, 38b, and 38c do not slide down.

  Moreover, the short 1st auxiliary link 45a in the connection part with the front-end part of the 2nd seedling mounting base 38b of the 1st movement link member 39a, and the rear-end part of the 1st seedling mounting base 38a of the 2nd movement link member 39b The short second auxiliary link 45b in the connecting portion, the short third auxiliary link 45c in the connecting portion between the front end portion of the third seedling stage 38c of the second moving link member 39b, and the third of the third moving link member 39c. Third, second, fourth, and fifth stoppers 47c, 47b, 47d, and 47e are provided on the short fourth auxiliary link 45d at the connecting portion with the rear end of the three seedling mounting base 38c, respectively.

  The third, second, fourth and fifth stoppers 47c, 47b, 47d and 47e are fixed integrally with the pair of left and right first, second and third auxiliary links 45a, 45b, 45c and 45d, respectively. The first, second, third, fourth, fifth, and sixth stoppers 47a, 47b, 47c, when the first, second, and third seedling platforms 38a, 38b, and 38c are arranged in three stages. Since all of 47d, 47e, and 47f are standing as shown in FIG. 3, the seedling tray is prevented from sliding off from the stoppers 47a, 47b, 47c, 47d, 47e, and 47f.

  As shown in FIG. 4, when the first, second, and third seedling platforms 38a, 38b, and 38c are arranged side by side on the same plane, the second and fifth stoppers 47b and 47e are the first, second, and second Since the first and sixth stoppers 47a and 47f are raised from the upper plane of the three seedling platforms 38a, 38b, and 38c, the seedling trays are the first, second, and third seedling platforms 38a, 38b. , 38c can be placed on the same plane with no obstacles, and the first and sixth stoppers 47a and 47f do not slide down.

  Further, as shown in FIG. 6, the first, second, and third moving link members 39a, 39b, and 39c are arranged inside the support member 49 to the machine body. When the first and second and third moving link members 39a, 39b, and 39c are rotated when the 38b and 38c are rearranged on the same plane, the first and second and second and third drivers are operated in the process of rotating. There is no possibility of being caught in the three moving link members 39a, 39b, 39c and the like.

  Moreover, the first, second, and third seedling platforms 38a, 38b, and 38c can be moved by performing an operation of rotating the first, second, and third moving link members 39a, 39b, and 39c with one touch. It can be rearranged in one step in the same plane as the normal upper and lower three steps.

  The change in the number of stages of the first, second, and third seedling platforms 38a, 38b, and 38c is switched depending on the work (including field conditions) form. For example, the first, second, and third seedling platforms 38a, 38b, and 38c are arranged on the same plane when a seedling tray or the like is replenished, and are arranged in three upper and lower stages during seedling planting work. In addition, when the field conditions are, for example, high ridges and the first, second, and third seedling platforms 38a, 38b, and 38c cannot be expanded outward or forward, the first, second, and second stages When there is no problem in deploying the three seedling mounting bases 38a, 38b, and 38c outward or forward of the machine body, the first, second, and third seedling mounting bases 38a, 38b, and 38c are expanded to be one stage.

  In addition, the switching of the first, second, and third seedling mounting bases 38a, 38b, and 38c, which are composed of three stages on the upper and lower sides, to the front and back, can be performed while the seedling tray is placed.

  In addition, a configuration in which two first and second seedling platforms 38a, 38b are used instead of the three first, second, and third seedling platforms 38a, 38b, and 38c, and are arranged in two vertical stages or on the same plane. May be adopted.

  Even when the seedling platforms 38a, 38b, and 38c are used and when the seedling platforms 38a and 38b are used, the first, second, and third moving link members are arranged when they are rearranged in the upper and lower three stages, the upper and lower stages, or the same plane. 39a, 39b, 39c or the first and second moving link members 39a, 39b may have either a configuration in which the first seedling mounting base 38a is arranged in front of the machine body or a configuration in which the first seedling mounting board 38a is arranged in the rear of the machine body. .

  When using the first, second, and third seedling platforms 38a, 38b, and 38c, or the first and second seedling platforms 38a and 38b, the first and the second seedling platforms 38a, 38b, and the first and the second seedling platforms 38a, 38b The second and third moving link members 39a, 39b and 39c or the first and second moving link members 39a and 39b may be operated by an electric motor (not shown). At this time, if the operation switch of the electric motor is provided at two places on the assistant side, which is in a different place around the seedling transplanter, the operator side and the operator have good workability.

  The first, second, and third seedling platforms 38a, 38b, and 38c or the first and second seedling platforms 38a and 38b are vertically oriented around the rotation shaft 49a (FIGS. 4 and 5) of the support member 49. It is possible to have a configuration in which it can be rotated in the vertical direction either on the inner side or the outer side by rotating around the virtual rotation axis. Thus, the first, second, and third seedling platforms 38a, 38b, and 38c or the first and second seedling platforms 38a and 38b can be brought closer to the edge.

  Further, as shown in the side view of FIG. 7A and the front view of FIG. 7B, the first, second, and third seedling platforms 38a, 38b, and 38c, or the first and second seedling platforms 38a. , 38b, a rotation lock lever 73b that rotates the rotation lock plate 73a of the first, second, third seedling stage 38a, 38b, 38c or the first, second seedling stage 38a, 38b. Can be rotated in the front-rear direction together with the rotation direction of the first, second and third seedling platforms 38a, 38b and 38c or the first and second seedling platforms 38a and 38b.

  By operating the rotation lock lever 73b, the rotation lock plate 73a can be operated simultaneously with the rotation of the first, second and third seedling platforms 38a, 38b, 38c or the seedling platforms 38a, 38b. There is no need to perform the switching operation over and over, improving work efficiency. At this time, the seedling frame rotation lock lever 73b was provided at the position of the rotation lock pin 73c of the support member 49 of the seedling mounting bases 38a to 38c or the seedling mounting bases 38a and 38b. At this time, by setting the seedling frame rotation lock lever 73b in a locked state so as to extend to the front side (the cocoon side), the rotation lock lever 73b can be performed from either the cocoon side or the rice transplanter side. The support member 49 and the seedling stage 38b are connected by a reinforcing plate 73e.

  The rotation lock plate 73a rotates integrally with the intermediate shaft 38b1 that rotates together with the link 39b at the center of the moving link 39b. The rotation lock lever 73b is attached to the support member 49 so as to be capable of rotating back and forth. The rotation lock pin 73c is attached to the support member 49 so as to freely advance and retract, and is connected to the rotation lock lever 73b via a cable 73d. The rotation lock plate 73a has a hole for receiving the rotation lock pin 73c. The rotation lock pin 73c enters the hole of the rotation lock plate 73a and regulates the rotation of the rotation lock plate 73a in a state where the seedling platforms 38a, 38b, 38c are arranged in a plurality of stages.

(Electric seedling stand)
As described above, in the preliminary seedling frame 38, the link mechanism can be operated by an electric motor. A configuration example of the reserve seedling frame 38 at this time is shown in FIGS. Here, a “housing state” in which a first seedling mounting base 38a, a second seedling mounting base 38b, and a third seedling mounting base 38c, which are a plurality of preliminary seedling mounting members for loading spare seedlings, are arranged in three upper and lower stages, The “development state” in which the first seedling mounting table 38a, the second seedling mounting table 38b, and the third seedling mounting table 38c are arranged in a line in the front and rear and in the same plane is illustrated.

  The rotation axes ax1 and ax2 of the first, second and third seedling platforms 38a, 38b and 38c are supported by mounting posts 301p1 and 301p2 on the upper portion of the support frame 301 provided on the front side of the traveling vehicle body 2, respectively. . The electric spare seedling frame 38 has a switching motor 300m as a switching actuator that generates a driving force by rotating forward / reversely, and a second driving force applied from the switching motor 300m around the rotation axis ax1. A switching device 300 including a rotation gear 300g as a rotation member for rotating the moving link member 39b is provided.

  When the operator operates the switching motor 300m, the driving force of the switching motor 300m is transmitted to the rotation gear 300g and the second moving link member 39b rotates about the rotation axis ax1, and accordingly, the preliminary seedling frame The 38 “deployed state” and “stored state” are automatically switched. When the switching motor 300m of the switching device 300 is operated, the driving force is transmitted to the rotating gear 300g and the spare seedling frame 38 can be automatically switched between the “deployed state” and the “stored state”. There is no need to switch the spare seedling frame 38 in the work, and the work efficiency is improved.

  Although not shown, an adjustment dial is provided as a stop position adjustment member that can arbitrarily specify the position where the switching motor 300m stops its operation within a range of 0 to 100%. Since the operation of the switching motor 300m is stopped at the designated position, the operation of the switching motor 300m can be stopped at an arbitrary position by the adjustment dial. By stopping the pre-seedling frame 38 in the “deployed state” so that the end of the pre-seedling frame 38 does not collide with the end of the field, it is possible to prevent the preliminary seedling frame 38 from being damaged. It is also possible to facilitate the loading of seedlings.

(Electric control)
Next, the electric control of the deployment and storage of the seedling platforms 38a, 38b, 38c of the preliminary seedling frame 38 will be described.
As shown in the electric control system block diagram of FIG. 17, the seedling mounts 38 a, 38 b, 38 c of the preliminary seedling frame 38 include a seedling frame state detection sensor 39 s that detects that the storage position of the upper and lower multistage storage state has been removed, Preliminary seedlings are provided with a travel detection sensor 2s for detecting body travel and a notification member 75 such as a buzzer 75a and a lamp 75b for reporting on the condition of detection by the seedling frame state detection sensor 39s at the time of travel detection by the travel detection sensor 2s. It is configured so as to notify the airframe traveling while the frame 38 is deployed.

The seedling frame state detection sensor 39s detects a range from the start of the unfolding operation until the return to the storage position, and travels according to the unfolding detection result of the preliminary seedling frame 38 detected by the seedling frame state detection sensor 39s. Occasionally, the configuration for notifying the development of the seedling stage is prevented from forgetting to store the seedling stages 38a, 38b, and 38c of the preliminary seedling frame 38, and preventing the standby seedling frame 38 from being transferred due to an unexpected operation. As a result, it is possible to prevent the seedling mount of the preliminary seedling frame 38 from being damaged by hitting the bank or the wall at the end of the field, and the durability is improved.
In addition, since the loaded seedling is prevented from falling from the spare seedling frame 38, it is not necessary for the operator to pick up the dropped seedling, so that the labor of the operator is reduced and the work efficiency is reduced. Will improve.

(Preliminary seedling frame operation member)
In this case, the seedling frame state detection sensor 39s is arranged so as to be able to detect the rotational positions of the moving link members 39a, 39b, 39c of the preliminary seedling frame 38, and the moving link members 39a, 39b, 39c are electrically operated. A rotation member 300g that is rotationally driven by the switching motor 300m is attached, and a preliminary seedling frame operation member that adjusts the driving of the switching motor 300m is provided, so that the switching motor 300m rotates according to the operation of the switching device 300. The operator moves to the side of the spare seedling frame 38 by rotating the gear 300g so that the seedling stage of the preliminary seedling frame 38 can be electrically switched to the “deployment” and “storage” positions. There is no need to switch manually, the work efficiency can be improved, and the labor of the operator is reduced.

  The switching device 300 can stop the operation of the switching motor 300m at an arbitrary position by an adjustment operation by using, for example, a return operation type opening / closing adjuster, so that the seedling platforms 38a, 38b, and 38c are “deployed”. ”And“ storing ”are stopped halfway, and the seedling loading platforms 38a, 38b, 38c are deployed so that the end portions do not hit the end of the field. Can be easily.

  Then, by providing the seedling frame state detection sensor 39 s in the link mechanism 39, it is possible to determine the degree of deployment of the preliminary seedling frame 38 from the rotational position of the link mechanism 39, so that each seedling mounting base 38 a, 38 b, 38 c It is not necessary to provide a position detection switch or the like along the unfolding process, and the number of parts is reduced.

(Run detection)
For the travel detection, the travel detection sensor 2 s is a rear wheel rotation detection sensor 11 s that detects the rotation of the rear wheel 11, and the seedling frame state detection sensor 39 s detects the working state of the spare seedling frame 38 as “deployed state”. When the rear wheel rotation detection sensor 11s detects the rotation of the rear wheel 11 in the state, the notification device 75 is activated so that the loaded seedlings travel in the “deployed state” where the loaded seedlings can easily move back and forth. Even if it is done, the operator can immediately notice, so that the seedling is prevented from falling from the spare seedling frame 38, the work of picking up the seedling is omitted, and the labor of the operator is reduced.
Further, since it is possible to prevent the turning operation in the “deployed state” while the seedling is replenished and loaded at the end of the field, it is possible to prevent the reserve seedling frame from colliding with the bank or the wall at the end of the field and damage it. Improves durability.

(Stop pedal)
A stop pedal 33 for maintaining the stopped state of the traveling vehicle body by depressing operation and a pedal operation detection sensor 33s for detecting the depressing operation of the stop pedal 33 are provided, and the switching motor 300m is provided on condition of the depressing operation of the stop pedal 33. The control process to drive is comprised.
The depressing operation of the stop pedal 33 is based on a predetermined depressing amount that can maintain the travel stop.

By controlling the switching motor 300m based on the stop pedal 33, the operation of the reserve seedling frame operating device 300 is not accepted unless the stop pedal 33 is operated. Since the working state of the spare seedling frame 38 is switched and the front-rear balance of the airframe is prevented from changing, the straightness of the airframe is secured and the seedling planting accuracy is improved.
Further, the reserve seedling frame 38 is switched to the “deployed state” near the end of the field, and the tip of the reserve seedling frame 38 can be prevented from being damaged by contacting the bank or wall at the end of the field. Improves.

(Operation authentication switch configuration)
As for the specific configuration of the operation authentication switch for switching the operation of the switching device 300 for the reserve seedling frame 38, a pair of operations on the left and right of the handle 34 are shown in the sketch diagram showing the configuration example of the operation member in FIG. The authentication switches 81 and 81 are separated from each other and arranged at a position suitable for a two-handed operation, and the drive of the switching motor 300m can be adjusted and operated only for both operations.

As described above, the handle 34 is provided with the pair of operation authentication switches 81, 81. If either of the operation authentication switches 81, 81 is not operated, the switching motor 300m of the switching device 300 does not operate and the operation authentication is performed. When the switches 81 and 81 are operated at the same time, the switching motor 300m switches between the unfolded and stowed positions, so that the operator position is away from the spare seedling frame 38, i.e., the cockpit. Since the operator is not within the rotation range of the spare seedling frame 38, the operator does not need to move in accordance with the movement of the preliminary seedling frame 38, and the operability and work efficiency are improved. improves.
Further, if the operation of either one of the operation authentication switches 81, 81 is stopped, the switching motor 300m can be stopped on the spot, so that if a problem occurs in the spare seedling frame 38 or its opening / closing drive unit, immediately Therefore, the spare seedling frame 38 is less likely to be damaged, and durability is improved.

(Engine speed increases by opening and closing)
(Engine control)
Next, regarding the relationship between the electric control of the spare seedling frame 38 and the engine control, the rotation speed of the engine 20 is increased in conjunction with the operation of the switching motor 300m, and the electricity generated by the increase in the rotation speed of the engine 20 is controlled. The battery 22 for electric equipment is charged.
In particular, at the end of the field where the engine 20 tends to be in an idling state, the standby seedling frame 38 is often switched from the stored state to the unfolded state in the idling state, and the battery 22 is charged by the operation of the switching motor 300m. Since there is a shortage of electricity, functions of the fuselage, for example, the blower 38 of the fertilizer and the headlamp may become unusable, so that the operation for switching the seedling frame state detection sensor 39s from the stored state to the deployed state was performed. It is good also as a control structure which increases the rotation speed of the engine 20 if this is detected.
As described above, the working state of the spare seedling frame 38 is switched, and control for increasing the engine speed is performed during the transition from the deployed state to the stowed state or from the stowed state to the deployed state. Since the generated electricity is stored in the battery 22, even if the switching motor 300 m is activated and the electricity is consumed, electricity is stored in the battery 22 one after another. Even if the weight is heavy, the switching motor 300m can be reliably operated by operating stably, so that the work efficiency is improved.
For a gasoline engine that is particularly susceptible, abnormal operation of other electrical devices such as headlamps and fertilizer blowers 38 due to a decrease in the amount of electricity stored in the battery 22 is prevented.

(Auxiliary seedling stage)
Next, the auxiliary seedling mounting stand of the reserve seedling frame will be described.
As shown in the front view and the side view from the front part of the machine body of FIGS. The base 91 is rotatably supported on the frame 93 by the support shaft 92, and can be raised and held at a higher upper end position (B) at the rotated inner position (A).

  Thus, by providing the rotation raising / lowering type auxiliary seedling stage 91 at the uppermost stage, the auxiliary seedling stage 91 can be rotated to handle the seedlings at an angular position convenient for work. When the staged seedling platforms 38a, 38b, and 38c are deployed, the auxiliary seedling platforms 91 are moved to the inner position (A) or the upper end position (B) in advance, so that the seedling platforms 38a, 38b, and 38c are moved. Can be deployed and stored without hindrance.

(Marker interlock)
Next, marker interlock control will be described.
As shown in the block diagram of the system configuration of FIG. 13, the control unit C can control the deployment and storage of the preliminary seedling frame 38 based on the signal of the marker limit switch 101 that detects the operation of the left and right markers 184 and 184. To do. As shown in the flowchart of FIG. 14, the specific control by the control unit C is a first step (hereinafter referred to as a process for determining whether the non-actuated state is stored in the markers 184 and 184 based on the signal from the marker limit switch 101. In this case, the seedling platforms 38a, 38b, and 38c of the spare seedling frame 38 are returned to the storage position (S2) if applicable, within the range corresponding to the storage of both the markers 184 and 184. Continue (S3).

  As described above, the control of the spare seedling frame 38 based on the operations of the left and right markers 184 and 184 allows the spare seedling frame 38 to be moved within that range during the predetermined turning of the seedling transplanter corresponding to the storage of both the markers 184 and 184. If the seedling platforms 38a, 38b, and 38c are temporarily stored, the safety associated with turning the aircraft while the seedling platforms 38a, 38b, and 38c are deployed can be avoided and safety can be ensured. Even when the machine is put in the hangar, it is possible to avoid forgetting to store the seedling platforms 38a, 38b, 38c, to improve safety by preventing malfunction of the spare seedling frame 38, and to perform two operations in one operation. Effects such as improved operability can be obtained.

(Empty box)
Next, the configuration of the empty box will be described.
As shown in the perspective view of the seedling stage in FIG. 15, an extension base 111 on which mat seedlings can be placed so as to be slidable is provided on the outer side of each seedling stage 38a, 38b, 38c. The expansion base 111 is slidably supported by a collar-shaped guide member 112 attached to the lower surface of each seedling mounting base 38a, 38b, 38c.

  The expansion base 111 can be slid to the outside of the seedling mounting bases 38a, 38b, 38c as necessary at any of the deployment and storage positions of the seedling mounting bases 38a, 38b, 38c without requiring a space. In addition to being able to mount the mat seedlings for replenishment, four or more empty containers after supplying the mat seedlings for replenishment to the transplanting part 4 can be stacked. When moving the mat seedlings, it is only necessary to move the remaining empty boxes to the side, making the empty boxes easier to handle by minimizing the movement of the empty boxes, and without any obstacles caused by empty boxes. Can move smoothly.

(Large-capacity reserve seedling frame)
Next, the large-capacity reserve seedling frame will be described.
When configuring a large-capacity reserve seedling frame, there is an example in which a multi-stage seedling stage is provided as a fourth stage above the movable part by the three-stage seedling stage 38a, 38b, 38c that can be deployed and moved, In the example in which the fourth stage seedling mounting base is fixedly arranged on the airframe, it is necessary to configure it at a high position in order to avoid interference with the movable part. There was a problem.

  In order to solve such a problem, the large-capacity spare seedling frame 121 is movable by a three-stage seedling stage 38a, 38b, 38c that can be deployed as shown in the perspective view of the main part of the transplanter in FIG. At the upper part of the unit, a plurality of seedling platforms 122, 123 are fixed as a fourth stage and a fifth stage on the seedling stage 38a at the uppermost part of the movable part by a frame 124. The layout is performed so that the seedlings in front of the developed seedling stage 38a are moved to a position where they can be easily supplied. In addition, when the front and rear weight balance by the multi-stage system is necessary when the movable three-stage seedling platforms 38a, 38b, and 38c are deployed, a balance is provided by providing a rear moving weight.

  The large-capacity reserve seedling frame 121 having the above-described configuration can be applied to a large transplanter such as a ten-row planting based on the technology of the three-stage seedling platforms 38a, 38b, and 38c that can be deployed and moved. Since the height of the stage and the fifth stage seedling platforms 122 and 123 can be arranged in accordance with the seedling height, the height is suppressed and the operation becomes easy. Moreover, since the seedling replenishment work can be performed by bringing the 4th and 5th stage seedling platforms 122 and 123 close to the heel side assistant, the work load on the seedling transplanter can be reduced.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 2s Traveling detection member 4 Transplanting part 10 Front wheel 11 Rear wheel 11s Rear wheel rotation detecting member 20 Engine 22 Power supply part 31 Seat 33 Stop pedal 33s Pedal operation detecting member 34 Handle 38 Spare seedling frame 38a 38b Seedling stand 38c Seedling stand 39a Moving link member (link mechanism)
39b Moving link member (link mechanism)
39c Moving link member (link mechanism)
39s Seedling frame state detection member 75 Notification member 81 Preliminary seedling frame operation member (operation authentication switch)
300 switching device (preliminary seedling frame operation member)
300m actuator (switching motor)
300g Rotating member (Rotating gear)

Claims (5)

A traveling vehicle body (2) provided with an engine (20) and a handle (34) and supported by the front wheels and rear wheels (10, 11) so as to be able to travel on the field, and transplantation for planting seedlings in the field at the rear of the traveling vehicle body (2) A spare seedling configured by attaching a multi-stage seedling mounting base (38a, 38b, 38c) for storing a seedling in the front part of the traveling body (2) to the link mechanism (39a, 39b, 39c) In a seedling transplanting machine provided with a frame (38) and provided with a switching device (300) for opening and closing the preliminary seedling frame (38) in a range from a multistage storage position to a deployment position in series in the front and rear,
A seedling frame state detection member (39s) for detecting whether the working state of the preliminary seedling frame (38) is the storage position or the unfolding position, and a travel detection member (2s) for detecting whether the machine body is in a traveling state, A seedling transplanter provided with a notifying member (75) for notifying on condition of detection of a deployment process by a seedling frame state detecting member (39s) at the time of traveling detection by the traveling detection member (2s).   The switching device (300) is rotated by a seedling frame state detection member (39s) for detecting the rotation position of the link mechanism (39a, 39b, 39c) and a switching actuator (300m) to be rotated by the link mechanism (39a, 39m). The seedling transplanting machine according to claim 1, wherein the seedling transplanting machine comprises a rotating member (300g) for rotating 39b, 39c), and the switching device (300) is provided in the reserve seedling frame (38).   A stop pedal (33) for maintaining the travel stop of the traveling vehicle body (2) by a stepping operation and a pedal operation detecting member (33s) for detecting the stepping operation of the stop pedal (33) are provided, and the pedal operation detecting member ( The seedling transplanter according to claim 1 or 2, wherein when the depressing of the stop pedal (33s) is detected by 33s), the actuator (300m) can be driven.   A pair of operation authentication switches (81, 81) are disposed on the handle (34) of the traveling vehicle body (2) so as to be separated from each other, and when the operation authentication switches (81, 81) are operated simultaneously, the actuator (300m The seedling transplanting machine according to any one of claims 1 to 3, characterized in that it can be driven.   When the seedling frame state detection member (39s) detects that the preliminary seedling frame (38) has started to switch from the storage position to the deployment position, the engine (20) is rotated in conjunction with the driving of the actuator (300m). The seedling transplanter according to any one of claims 1 to 4, wherein the seedling transplanter controls the charging of the power source (22) while increasing the power.