JP2019208385A - Work vehicle - Google Patents

Abstract

To provide a seedling transplanter that allows reduction in the frequency and time of seedling supply to improve work efficiency.SOLUTION: A seedling transplanter comprises: a plurality of preliminary seedling mounting members (38a, 38b, 38c) for mounting a seedling box (68) or a seedling on a support machine frame (49) provided on a travel vehicle (2); and a preliminary seedling frame (38) to which a plurality of movement link members (39a, 39b, 39c) for rotatably coupling the plurality of preliminary seedling mounting members (38a, 38b, 38c) are attached which is configured to, by rotation of the plurality of the movement link members (39a, 39b, 39c), switch between a development state in which the plurality of preliminary seedling mounting members (38a, 38b, 38c) are arranged in a cross direction and a stacked state in which the plurality of preliminary seedling mounting members (38a, 38b, 38c) are arranged in a vertical direction. The preliminary seedling frame (38) is provided above a steering part (33) for operating the machine body.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a work vehicle such as a seedling transplanting machine in which a planting device for planting seedlings in a field is connected to the rear part of a vehicle body, and belongs to the technical field of agricultural machinery.

  In a seedling transplanter equipped with a seedling planting device at the rear part of the machine body, a seedling transplanter having a spare seedling mounting part composed of a plurality of spare seedling platforms on the side of the machine body is known.

  In the following Patent Document 1, a plurality of preliminary seedling platforms are vertically stacked and overlapped in plan view, and a plurality of preliminary seedling platforms are deployed in a substantially straight line in the front-rear direction. In addition, a seedling transplanting machine configured to switch the plurality of preliminary seedling platforms is disclosed. In this switching mechanism, a plurality of spare seedling platforms are attached to a parallel link mechanism consisting of one long moving link member and two short moving link members, and the vertical link mechanism is overlapped in a vertical direction by rotating the parallel link mechanism (plan view). And the state of the preliminary seedling stage can be switched between a state of being aligned in a substantially straight line in the front-rear direction (an unfolded state of being aligned in the horizontal direction).

  Then, when any one of the plurality of spare seedling platforms is changed from the stacked state to the deployed state with respect to the fixed preliminary seedling platform, the plurality of preliminary seedling platforms are deployed. Conversely, when one of the plurality of spare seedling platforms is changed from the deployed state to the stacked posture with respect to the fixed preliminary seedling platform, a plurality of spare seedlings are obtained. In this configuration, the platform can be switched to the overlapping state.

  Therefore, the configuration described in Patent Document 1 can easily and quickly switch the state of the plurality of preliminary seedling platforms, and can improve the switching workability of the state of the plurality of preliminary seedling platforms compared to the prior art.

  Moreover, the case which can place temporarily the seedling box described in patent document 2 is provided.

JP 2011-71361 A JP 2014-87276 A

  The seedling tank can be replenished by loading the seedling on the preliminary seedling platform of the aircraft.

  However, the driver's living space and the operation part are for operation, and are unnecessary during seedling replenishment work, resulting in dead space.

  Further, in the robot rice transplanter, the driver's living space and the operation portion are those when manned manually, and are unnecessary during unmanned maneuvering, and are not effectively used in dead space.

  In view of such a problem of the conventional work vehicle, the present invention reduces the number of times of seedling replenishment and time, and increases work efficiency. The purpose is a seedling transplanter.

In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that a seedling box (68) or a plurality of preliminary seedling placement members (38a, 38b, 38c) and a plurality of moving link members (39a, 39b, 39c) for rotatably connecting the plurality of preliminary seedling placing members (38a, 38b, 38c), respectively, and the plurality of moving link members (39a) , 39b, 39c) by rotating the plurality of preliminary seedling placement members (38a, 38b, 38c) arranged in the front-rear direction and a plurality of preliminary seedling placement members (38a, 38b, 38c) arranged in the vertical direction In a seedling transplanting machine provided with a spare seedling frame (38) configured to be freely switchable to
The preliminary seedling frame (38) was a seedling transplanting machine provided above the control section (33) for operating the machine body.

  According to the invention of claim 2, the steering unit (33) is provided with a handle (34) for steering the airframe, and the handle (34a) is capable of rotating the handle (34) up and down. The seedling transplanter according to claim 1, wherein the preliminary seedling frame (38) can be switched from the stacked state to the deployed state by rotating (34) downward.

The invention of claim 3 includes a position information acquisition device (200) for acquiring the position coordinates of the traveling vehicle body (2), an automatic traveling device (205) for operating the handle (34) to automatically travel the aircraft, A control device (100) for controlling each part of the airframe is provided,
The state in which the handle (34) is rotated downward can be controlled by the automatic travel device (205), and the state in which the handle (34) is rotated upward is capable of manual operation by an operator. The seedling transplanter according to claim 1 or 2, wherein the seedling transplanter is provided.

  According to the invention of claim 4, when the aircraft arrives at the edge of a preset farm field by the position information acquisition device (200), the automatic traveling device (205), and the control device (100), the aircraft is stopped, The seedling transplanter according to claim 3, wherein the preliminary seedling frame (38) is automatically switched from the stacked state to the expanded state.

  According to the first aspect of the present invention, the spare seedling frame (38) is provided above the control section (33) for operating the aircraft, and is therefore unnecessary when the operator's living space and the operation portion are replenished. , Dead space can be used effectively.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the handle vertical movement mechanism (34a) capable of rotating the handle (34) up and down allows the When the handle (34) is rotated downward, interference between the reserve seedling frame (38) and the handle (34) can be prevented, so that the state of the reserve seedling frame (38) can be switched.

  According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the automatic traveling device (205) and the control device (100) for controlling each part of the machine body are used to handle the vehicle. Since (34) is not required, the automatic traveling device (205) can be controlled by rotating downward by the vertical movement mechanism (34a), thereby reducing the burden on the operator.

  According to the present invention described in claim 4, in addition to the effect of the invention described in claim 3, the position information acquisition device (200), the automatic travel device (205), and the control device (100) When the aircraft arrives at the side of the set field, the aircraft is stopped and the spare seedling frame (38) is automatically switched from the stacked state to the deployed state, so that the operator can control the automatic traveling device (205) during the control. The workability for loading seedlings is improved even when the aircraft is not on board.

It is a side view of the riding type rice transplanter of one embodiment of the present invention. It is a top view of the riding type rice transplanter of FIG. FIG. 2 is a side view of the case where the preliminary seedling platforms of the riding type rice transplanter of FIG. 1 are arranged in three upper and lower stages (stacked state). FIG. 3 is a simplified side view when the preliminary seedling platforms of the riding type rice transplanter of FIG. 1 are arranged in three upper and lower stages (laminated state). It is a side view of the case where the reserve seedling platform of the riding type rice transplanter of FIG. 1 is arranged on the same plane (deployed state). FIG. 3 is a simplified side view when the spare seedling platform of the riding type rice transplanter of FIG. 1 is arranged on the same plane (deployed state). It is a top view when the reserve seedling stand of the riding type rice transplanter of FIG. 1 is arranged on the same plane (deployed state). It is an operation control block diagram of the reserve seedling stand of the riding type rice transplanter of FIG. It is the side surface simplification figure which shows the lamination | stacking state (FIG. 9 (a)) and expansion | deployment state (FIG.9 (b)) of the reserve seedling stand of the riding type rice transplanter of FIG. It is a top view (Drawing 10 (a)) of the change drive device of the reserve seedling stand of the riding type rice transplanter of Drawing 1, and the internal structure figure (Drawing 10 (b)). It is a top view of the switching drive device of the reserve seedling stand of the riding type rice transplanter of FIG. Side view (FIGS. 12 (a) and 12 (b)) and plan view (FIG. 12 (c)) and an enlarged view of the front protrusion of the spare seedling platform of the riding type rice transplanter of FIG. (FIG. 12D). Side view showing the entire movement state of the seedling box mounting member (FIG. 13A) and side view showing the individual movement state of the seedling box mounting member (FIG. 13B) It is a front view which shows the individual movement state of a seedling box mounting member. It is a side view of the reserve seedling frame of a riding type rice transplanter. It is a top view of the reserve seedling frame of a riding type rice transplanter.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 are a side view and a plan view of a riding type rice transplanter equipped with a fertilizer application device as a granular material feeding device which is a typical example of the seedling transplanter of the present invention. In this riding type rice transplanter 1 with a fertilizer application, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting portion 4 can be moved up and down. Is provided. The boarding operator refers to the left and right directions in the forward direction of the riding type rice transplanter as left and right, respectively, and the forward direction and the reverse direction 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 (traveling devices) as drive wheels, and a transmission case 12 is disposed at the front of the airframe. Front wheel final cases 13, 13 are provided on the left and right sides of the transmission case 12, and the left and right front wheels project 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. Left and right front wheels 10, 10 are respectively attached to the axles. 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 a belt transmission device 21 and a hydraulic continuously variable transmission (HST) 23. The rotational power transmitted to the mission case 12 is shifted by the 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 seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 28. Is transmitted to.

  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 lift link device 3 is a parallel link mechanism, and includes a single 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. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44.

  An elevating hydraulic cylinder 46 is provided between a support member (not shown) fixed to the main frame 15 and the tip of a swing arm (not shown) formed integrally with the upper link 40. By expanding and contracting with hydraulic pressure, the upper link 40 is rotated up and down, and the seedling planting portion 4 is lifted and lowered with a substantially constant posture.

  The seedling planting 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 one by one to the seedling outlets 51a,. When all the seedlings are supplied to the seedling outlet 51a, ..., the seedling feeding base 51b, ..., the seedling stage 51 for transferring the seedling downward, the seedling planting planting the seedling supplied to the seedling outlet 51a, ... in the field Attaching device 52,..., A pair of left and right drawing markers 75 (FIG. 1) and the like for drawing the aircraft path in the next stroke to the topsoil surface.

  In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. 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, ... to plant seedlings. 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 detected by switching a hydraulic valve (not shown) that controls the lifting hydraulic cylinder 46 according to the detection result and raising and lowering the seedling planting unit 4 according to the detection result. Is always kept constant.

  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,. Guided to a guide (not shown),... And dropped into a fertilization structure formed in the vicinity of the side of the seedling planting line by a grooved body 76 (FIG. 1) provided on the front side of the fertilizer guide,. ing. The air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hoses 62,... Via the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hoses 62,. It is designed to be transported.

  The seedling planting unit 4 is provided with 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) as an example of a leveling device. The seedling platform 51 is configured to slide in the left-right direction using a support roller 65a of a rectangular support frame body 65 that is a full width in the left-right direction and the up-down direction that supports the entire seedling planting unit 4 as a rail.

  In addition, on the left and right sides of the front part of the traveling vehicle body 2, a pair of spare seedling platforms 38, 38 on which replenishment seedlings are placed can be pivoted to a position where they protrude from the front and back of the machine body and a position where they are aligned vertically Is provided.

  FIG. 3 shows a side view when the first preliminary seedling stage 38a, the second preliminary seedling stage 38b, and the third preliminary seedling stage 38c on one side of the machine body are arranged in three stages, and a simplified side view is shown. As shown in FIG. Moreover, the side view at the time of arrange | positioning the 1st reserve seedling stand 38a, the 2nd preliminary seedling stand 38b, and the 3rd preliminary seedling stand 38c on the same plane is shown in FIG. 5, and a side simplified view is shown in FIG.

  The preliminary seedling table 38 is supported by a support machine frame 49 having a base side disposed below the floor step 35 of the traveling vehicle body 2, and is configured in three upper and lower stages via moving link members 39a, 39b, and 39c, respectively. It comprises a preliminary seedling stage 38a, a second preliminary seedling stage 38b, and a third preliminary seedling stage 38c.

  A first support frame body 37a, a second support frame body 37b, and a third support frame are integrally formed on the bottom surfaces of the first preliminary seedling stage 38a, the second preliminary seedling stage 38b, and the third preliminary seedling stage 38c, respectively. A body 37c is attached, and rotation shafts 39a1 and 39a2 at both ends of the first moving link member 39a are rotatable at the center of the first support frame 37a and the front end of the second support frame 37b, respectively. The rotating shafts 39b1 and 39b2 at both ends of the second moving link member 39b are rotatably connected to the rear end portion of the first support frame body 37a and the front end portion of the third support frame body 37c, respectively. Rotating shafts 39c1 and 39c2 at both ends of the third moving link member 39c are rotatably connected to the rear end of the second support frame 37b and the center of the third support frame 37c.

  The outer peripheral portions of the rotation shafts 39a2, 39b1, 39b2, and 39c1 are attached to the support frame members 37a, 37b, and 37c by welding. And the support piece (not shown) of the moving link members 39a, 39b, 39c is inserted into the insertion part (not shown) of the rotating shafts 39a2, 39b1, 39b2, 39c1 welded to the support frames 37a, 37b, 37c. Insert and install.

  Further, a rotation fulcrum 37b1 is provided at a substantially central portion of the second moving link member 39b and a substantially central portion of the second support frame body 37b so as to be rotatable with respect to each other.

  The support machine frame 49 is provided with two front and rear branch posts 49a and 49b, and the tops of the branch posts 49a and 49b reach the vicinity of the lower surface of the second support frame 37b. A rotating shaft 39b3 provided near the center of the second moving link member 39b is provided near the top of the front branching column 49a, and the second moving link member 39b is centered on the rotating shaft 39b3. It is freely rotatable around 49a. The rotation shaft 39b3 is provided on the second moving link member 39b below the rotation fulcrum 37b1. Further, a rotating shaft 39c3 provided near the rear end of the third moving link member 39c is provided near the top of the rear branch post 49b, and the third moving link member 39b is located behind the rotating shaft 39c3. It is freely rotatable around the side branch column 49b. The rotation shaft 39c3 is provided on the third moving link member 39c below the rotation shaft 39c1.

  The second preliminary seedling table 38b is not fixed to the front branch support machine frame 49a and the rear support machine frame 49b, which are machine body members, and the second moving link member 39b moves the rotation fulcrum 39b3 from the state shown in FIG. When the center pivots to the state shown in FIG. 5, the pivot fulcrum 39b3 is located below the pivot shaft 37b1 on the side surface of the central portion of the second preliminary seedling stage 38b, so that it is in front of the position shown in FIG. A second preliminary seedling table 38b is arranged on the side. At this time, when the third moving link member 39c also rotates from the state shown in FIG. 3 around the rotation fulcrum 39c3 to the state shown in FIG. It is arranged in front of the position shown.

  Accordingly, as shown in the plan view of FIG. 7, when the first preliminary seedling stage 38a, the second preliminary seedling stage 38b, and the third preliminary seedling stage 38c are developed on substantially the same plane, a wide seedling box 68 or the like When these three preliminary seedling platforms 38a, 38b, 38c are moved more forward than before, the front end of the machine body can be projected out of the field. For example, it becomes easy to load seedlings on the spare seedling platforms 38a, 38b, and 38c from a truck or the like at the shore.

  Further, as shown in the plan view of FIG. 7, a pair of front projecting portions 38a1, 38b1, and 38c1 projecting forward are provided at both front end portions of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c. Respective projecting portions 38 a 2, 38 b 2, and 38 c 2 are formed at the center of the rear end portion and projecting rearward. Therefore, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are in the expanded configuration, the rear protrusions 38a2 and 38b2 of the preliminary seedling platforms 38a and 38b that are located on the front side of the machine body are located on the rear side of the machine body. It will be arranged at a position that overlaps with the front protrusions 38b1 and 38c1 of the positioned preliminary seedling platforms 38b and 38c in a side view. Therefore, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are arranged in the front-rear direction, the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are moved in the front-rear direction. Therefore, the seedling boxes 68 loaded on the preliminary seedling platforms 38a, 38b, and 38c can be smoothly moved to the rear side, and the working efficiency is improved as compared with the prior art.

  As shown in the side views of FIGS. 3 and 5, the front protrusions 38a1, 38b1, and 38c1 of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are formed in a rear upward inclined shape (rear upward inclined portion). ), And the upper surface of the inclined shape is made higher than the seedling placement surfaces of the preliminary seedling placement stands 38a, 38b, and 38c. Further, the rear protrusions 38a2, 38b2, and 38c2 of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are made higher than the seedling mounting surfaces of the preliminary seedling platforms 38a, 38b, and 38c, and the front side It is the same as the upper surface of protrusion part 38a1, 38b1, 38c1, or is made lower than the said upper surface.

  Since the front protrusions 38a1, 38b1, and 38c1 are rearwardly inclined portions in this way, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are in the unfolded state, the front preliminary seedling platform When the seedling box 68 (see FIG. 12) or the like is moved from the 38a, 38b to the rear spare seedling platforms 38b, 38c, the seedling box 68 can be placed on the rear rising slope and moved rearward. This makes it easier to move and improves work efficiency. Further, the upper surfaces of the front protrusions 38a1, 38b1, 38c1 and the rear protrusions 38a2, 38b2, 38c2 are made higher than the seedling mounting surfaces of the preliminary seedling mounting bases 38a, 38b, 38c. The seedlings placed on the preliminary seedling placement bases 38a, 38b, 38c with the front protrusions 38a1, 38b1, 38c1 and the rear protrusions 38a2, 38b2, 38c2 when the seedling placement stands 38a, 38b, 38c are stored. Since it is possible to prevent the box 68 and the like from moving back and forth, the seedling box 68 and the like are prevented from falling downward from the respective reserve seedling platforms 38a, 38b and 38c, and it is not necessary to pick up the dropped seedling box 68 and the like. , Work efficiency is improved than before.

  Between the left and right sides of the pair of front protrusions 38a1, 38b1, 38c1 of each of the spare seedling platforms 38a, 38b, 38c, and at the bottom of the preliminary seedling platforms 38a, 38b, 38c, the front preliminary seedling platforms 38a, 38b Receiving members 38a3, 38b3, 38c3 for receiving the rear protrusions 38a2, 38b2, etc. are provided, respectively, and the receiving members 38a3, 38b3, 38c3 protrude into the space between the pair of front protrusions 38a1, 38b1, 38c1. Formed.

  In this way, the receiving members 38b3 and 38c3 receive the rear protrusions 38a2 and 38b2 of the front spare seedling platforms 38a and 38b between the front side protrusions 38b1 and 38c1 of the preliminary seedling platforms 38b and 38c. Therefore, the preliminary seedling platforms 38a, 38b, and 38c are not lowered too much, and the deployed preliminary seedling platforms 38a, 38b, and 38c are surely arranged on substantially the same plane. The loading work such as 68 becomes easy, and the work efficiency is improved as compared with the conventional one.

  Further, by providing the receiving members 38a3, 38b3, 38c3 at the bottom of the preliminary seedling mounts 38a, 38b, 38c, the upper ends of the rear protrusions 38a2, 38b2, 38c2 are the upper ends of the front protrusions 38a1, 38b1, 38c1. Since the seedling box 68 and the like placed on the front protrusions 38a1, 38b1, 38c1 having the rear rising slope are smoothly moved, the work efficiency is higher than the conventional one. improves.

  In addition, the first, second, and third partition walls 38a4, 38b4 that prevent the seedling box 68 from falling at a total of four locations on the front and rear sides of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c. , 38c4 are arranged.

  Further, the rotation fulcrum 39b3 of the second moving link member 39b may be provided coaxially with the rotation shaft 37b1 of the second preliminary seedling stage 38b. In this case, the center second preliminary seedling table 38b does not move back and forth.

  As described above, the operation of the first, second, and third moving link members 39a, 39b, and 39c (rotation) causes the first, second, and third preliminary seedling platforms 38a, 38b, and 38c to move in the front-rear direction. The switching state is switched between the aligned state and the stacked state where the preliminary seedling platforms 38a, 38b, and 38c are vertically aligned. This switching can be performed by the switching drive device 70 that is driven by the electric motor 71. The switching drive device 70 includes a disk gear, a semicircle, or a drive gear 71a attached to a rotation shaft (not shown) of the electric motor 71 and a rotation shaft 39b3 of a moving link member 39b meshing with the drive gear 71a. A half-moon shaped switching gear 70a is provided.

  The switching gear 70a is provided concentrically with the rotation shaft 39b3 of the moving link member 39b provided on the front branch post 49a, and rotates together with the rotation shaft 39b3. Therefore, the rotation shaft 39b3 is driven by the drive of the electric motor 71. And the second moving link member 39b integral with the rotating shaft 39b3 is rotated at the same time, so that the first, second, and third moving link members 39a, 39b, and 39c are in the stacked state and the deployed state. Can be switched.

  FIG. 8 is a block diagram showing the operation control of the preliminary seedling platforms 38a, 38b, and 38c.

  A switch 73 (which may be a button or a lever) (FIGS. 1 and 2) is provided in the vicinity of the seat 31 as a switching operation means for switching the preliminary seedling platforms 38a, 38b, and 38c between the deployed state and the stacked state by the switching drive device 70. Further, as shown in the simplified diagrams of FIGS. 4 and 6, when the standby seedling platforms 38a, 38b, and 38c are rotated by the operation of the changeover switch 73 to the expanded state or the stacked state, these preliminary seedlings are provided. Stop plates 73a1 and 73a2 for stopping the platforms 38a, 38b and 38c were provided on the side surfaces of the third preliminary seedling platform 38b and the second preliminary seedling platform 38c, respectively. When the preliminary seedling platforms 38a, 38b, and 38c are in a stacked state, the stop plate 73a1 hits the stop plate 73a1 and overloads the electric motor 71 to generate an excessive voltage or overheat. The stop plate 73a2 hits the second moving link member 39b when the preliminary seedling stage 38a, 38b, 38c is in the expanded state, overloads the electric motor 71 and generates an excessive voltage. It is a member that stops the operation by heating or overheating.

  Further, if the stop plates 73a1 and 73a2 continue to contact the second moving link member 39b, the load (the second moving link member 39b contacts the stop plate 73a1 or 73a2 and is driven even though it cannot be rotated any more. This is a load of the electric motor 71 that is continued, and an energization path using the bimetal 85 is arranged inside the electric motor 71, and the bimetal 85 is bent (retracted) when heated by the load or an excessive voltage is applied. In this configuration, the energization is stopped and the rotation of the electric motor 71 is stopped.In the case of the voltage type, the operation can be restarted immediately after the stop. The electric motor 71 is stopped until it returns, and the operator does not have to stop the electric motor 71. You can concentrate, work efficiency can be improved more than ever.

  Further, when the preliminary seedling stage 38a, 38b, 38c is in the expanded state or the loaded state, the second moving link member 39b comes into contact with the stop plate 73a1 or 73a2, so that the second moving link member 39b is caused by vibration of the machine body. The first, second and third preliminary seedling platforms 38a, 38b and 38c are prevented from shaking back and forth, preventing the seedlings from falling and the first, second and third preliminary seedlings due to the shaking. The wear of the mounting bases 38a, 38b, 38c and other components for placing the preliminary seedling is reduced.

  Further, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are in an expanded state or a loaded state, components such as a switch for stopping the electric motor 71 and a circuit can be omitted. The number of parts is greatly reduced and the configuration is simplified.

  When a conventional limit switch is used, a cable or a circuit that sends a stop signal simultaneously with the movement of the moving link members 39b and 39c to the switch is required, so that the number of parts is large and the structure is complicated. In addition, since a limit switch that stops in the unfolded state and a limit switch that stops in the loaded state are necessary, the number of parts is further increased and the structure is complicated.

  In contrast, in the present invention, when the bimetal 85 in the electric motor 71 is retracted (bent) due to overvoltage or overheating, the electric motor 71 automatically stops, so that a path for transmitting a stop signal is not required. Since it is only necessary to provide a switch for operating the switch in the unfolded state and the loaded state and connect the switch and the electric motor with a cable, the number of parts can be reduced and the structure can be simplified.

  Further, as shown in FIG. 5, when the first, second and third preliminary seedling platforms 38a, 38b and 38c are in the unfolded state, the first, second and third moving link members 39a, 39b and 39c are used. A stop plate 73a1 for stopping the movement of the first preparatory seedling table 38b is arranged on the second preliminary seedling table 38b in the center stage, and as shown in FIG. 3, the first, second, and third preliminary seedling table 38a, 38c, 38c are loaded. Since the stop plate 73a2 for stopping the first, second, and third moving link members 39a, 39b, and 39c in the state is disposed on the third preliminary seedling stage 38c in the lower stage, at the position where the unfolded state or the loaded state is reached. Since the first, second, and third moving link members 39a, 39b, and 39c are in contact with each other, a simple configuration can be achieved.

  Since the first, second and third moving link members 39a, 39b and 39c come into contact with the stop plates 73a1 and 73a2 and stop, the first, second and third moving link members 39a are vibrated by the vibration of the airframe. , 39b, 39c are moved to prevent the first, second and third preliminary seedling platforms 38a, 38b, 38c from shaking back and forth, preventing the seedling from falling, and the first, second and second The wear of the third preliminary seedling stage 38a, 38b, 38c and the members around it is reduced.

  Further, since the load is easily applied to the electric motor 71 due to the contact between the first, second, and third moving link members 39a, 39b, and 39c and the stop plates 73a1 and 73a2, the electric motor 71 is stopped more quickly and the electric power is consumed. The amount is reduced.

  Further, FIGS. 9 (a) and 9 (b) show simplified views of the loading state and the unfolding state of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c according to another embodiment of the present invention. Show. Stop plates 73a1 and 73a2 in this case are provided on the front and rear side surfaces of the second preliminary seedling stage 38b, respectively.

  In this case, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are loaded, the upper and lower ends of the second moving link member 39b abut against the stop plates 73a1 and 73a2, respectively. Since the first, second, and third moving link members 39a, 39b, and 39c are stopped, the first, second, and third moving link members 39a, 39b, and 39c are moved by the vibration of the fuselage, and the first and second moving link members 39a, 39b, and 39c are moved. The second and third preliminary seedling platforms 38a, 38b, 38c are prevented from shaking back and forth, so that the seedlings are prevented from falling, and the first, second, and third preliminary seedling platforms 38a, 38b, Wear of components including 38c is reduced.

  When the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are switched from the loaded state to the unfolded state, as shown in partially enlarged views in the round frames A and B of FIG. Since the two moving link members 39b and the first and third moving link members 39a and 39c sandwich the stop plates 73a1 and 73a2, respectively, the first, second and third moving link members 39a, 39b and 39c are locked. The first, second, and third moving link members 39a, 39b, and 39c are prevented from moving back and forth due to vibrations of the airframe, preventing the seedling from falling and preventing the seedling from being shaken. The wear of the constituent members is reduced.

  As shown in the plan view of the switching drive device 70 in FIG. 10A and the internal structure diagram of the switching drive device 70 in FIG. The auxiliary plate 79 provided with the rotation shaft 71a1 of the drive gear 71a of the electric motor 71 is shifted in phase with the rotation shaft 81 of the switching gear 70a for moving the second and third moving link members 39a, 39b, 39c. To do. A configuration is employed in which a motor mounting plate (holding plate) 80 is mounted across the cover plate 78 and the auxiliary plate 79, and an electric motor 71 for rotating the rotating gear 70a is mounted on the holding plate 80. .

  In the switching drive device 70 configured as described above, the holding plate 80 is provided across the cover plate 78 and the auxiliary plate 79, and the electric motor 71 is mounted on the holding plate 80. Therefore, the first, second, and third movements are performed. When the link members 39a, 39b, 39c are in contact with the stop plates 73a1, 73a2 and a load is applied, the force by which the electric motor 71 escapes is applied to the holding plate 80, and the force is received by the cover plate 78. It becomes difficult to bend.

  Further, since no force is applied to the electric motor 71 due to the load, the electric motor 71 is prevented from escaping, and the distance between the electric motor 71 and the switching gear 70a is prevented from being increased. Is omitted, and the labor of the operator is reduced.

  As shown in the plan view of the switching drive device for the first, second, and third preliminary seedling platforms 38a, 38b, and 38c in FIG. 11, the switching drive device 70 is provided around the side surface of the second preliminary seedling platform 38b. A guide cover 88 is provided, and the guide cover 88 is divided into a main cover 83 that covers the drive gear 71a of the electric motor 71 and an auxiliary cover 82 that covers the electric motor 71. The main cover 83 is connected to the cover plate 78, and the auxiliary cover is provided. 82 is connected to the main cover 83 and the cover plate 78.

  With the configuration shown in FIG. 11, when the auxiliary cover 82 is removed, the electric motor 71 and the holding plate 80 are exposed. Therefore, adjustment and cleaning can be performed without removing the entire guide cover 88 every time maintenance is performed. improves.

  The electric motor 71 may be provided with a bimetal 85 (shown only in FIG. 8) that is deformed and stops the energized state when a load is applied and heat of a predetermined temperature or higher is generated. In this way, if the electric motor 71 is overloaded and overvoltage is generated or overheating occurs and the temperature exceeds a predetermined temperature, the bimetal 85 is deformed to stop energization. When the platforms 38a, 38b, and 38c are in the unfolded state or the loaded state, an overvoltage is applied to the electric motor 71, and the electric motor 71 is stopped when it is overheated.

  12A and 12B are a side view, a plan view of FIG. 12C, and an enlarged view of a front protrusion of the preliminary seedling table of FIG. 12D. As described above, the front end portions of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are formed with front protrusion portions 38b1 and 38c1 that protrude toward the front, respectively. 38b1 and 38c1 are formed with rear-upward inclined surfaces, and transport auxiliary rollers 47b and 47c are arranged on the front protrusions 38b1 and 38c1 to assist the transport of seedlings. In addition, the upper surfaces of the conveyance auxiliary rollers 47b and 47c are configured to protrude upward from the upper portions of the rear upward inclined surfaces of the front protrusions 38b1 and 38c1.

  The seedling box mounting member 101 shown in FIGS. 13 and 14 will be described.

  A seedling box mounting member 101 for mounting the seedling box 68 is provided on the outside of the machine body of the first, second, and third preliminary seedling mounting bases 38a, 38b, and 38c. Since this seedling box mounting member 101 is fixed to the preliminary seedling mounting base, it is configured to move together with the preliminary seedling mounting base.

  Moreover, it comprises wire rods, and the front and rear direction and the upper side of the machine body are open, and the front and rear ends of the seedling box mounting member 101 are inclined. For this reason, the seedling box 68 can be taken in and out from the front-rear direction and the upper side of the machine body, and when the seedling box 68 is placed on the seedling box mounting member 101 by an inclination, it is prevented from dropping due to vibration of the machine body.

  Further, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are switched from the loaded state to the deployed state, the seedling box mounting member 101 is similarly arranged in the vertical direction of the machine body. The moving state 101a is switched to the taking-out state 101b arranged in the longitudinal direction of the machine body.

  In the take-out state 101b, the seedling box mounting members 101 are arranged in the longitudinal direction of the machine body so that the seedling box mounting members 101 are adjacent to each other in a rail shape, and the seedling box 68 can be easily loaded and unloaded from the machine body to the field.

  Further, since the seedling box 68 placed on the seedling box mounting member 101 can be easily taken out from the field side, workability is improved.

  Further, in the take-out state 101b, the seedling box mounting member 101 positioned at the rear of the machine body is positioned above the seedling box mounting member 101 positioned at the front of the machine body, so that the seedling box 68 can be smoothly moved forward. Can send.

  Further, the seedling box mounting member 101 is configured to place the seedling box 68 in an oblique posture with the outer side of the machine body facing outward. By doing so, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are in the loaded state (overall movement state 101a), the seedling box 68 is tilted inward and contacts the preliminary seedling platform. Can be prevented.

  In addition, it is possible to switch between the whole movement state 101a and the removal state 101b in a state where the seedling box 68 is placed on the seedling box mounting member 101. In the entire movement state 101a, the seedling box mounting members 101 are separated from each other and are arranged in the vertical direction of the machine body, so that the seedling box mounting member 101 located above serves to fix the seedling box 68 located below. Note that the seedling box 68 placed on the uppermost portion can be prevented from dropping from the machine body by a separate fixing member (not shown).

  Further, the front end portion and the rear end portion of the seedling box mounting member 101 are provided with a bent shape toward the upper side of the machine body. As a result, the seedling box 68 is prevented from slipping down while traveling on the vibration of the fuselage or on the slope.

  The preliminary seedling frame 38 shown in FIGS. 15 and 16 will be described.

  In order to improve the loadability and loading capacity of work materials such as seedlings from the outside of the machine body, the spare seedling frame 38 is also provided above the control unit 33 for operating the machine body.

  More seedlings can be placed on the body, and the number of times the seedlings are replenished to the spare seedling frame 38 is reduced, so that workability is improved. In addition, when the spare seedling frame 38 provided above the operation unit 33 is switched from the stacked state to the deployed state, the handle 34 is provided with a handle vertical movement mechanism 34a so that the preliminary seedling frame 38 and the handle 34 are provided. 34 interference can be prevented.

  In addition, since the position information acquisition device 200 that acquires the position coordinates of the machine body is provided with the automatic travel device 205 that operates the handle 34 to automatically travel the machine body, unmanned field work is possible.

  The workability of loading work materials such as seedlings into the unmanned airframe into the spare seedling frame 38 can also be improved with the above configuration. This is possible when the airframe is in a state of being stopped from the front side at the heel and the spare seedling frame 38 is in the unfolded state.

  Further, when the handle 34 is rotated below the machine body by the handle vertical movement mechanism 34a, the automatic travel device 205 can automatically travel. When the position information acquisition device 200 is in a predetermined position, a preset position, or a state in which the machine body is approached and work materials such as seedlings need to be replenished, the spare seedling frame 38 is automatically set to the unfolded state, Work efficiency improves more.

  By providing a sensor (not shown) for detecting whether or not a seedling is placed on the reserve seedling frame 38, it is possible to grasp a state that needs to be replenished.

  In addition, when it has to be replenished, it automatically stops at the edge and puts the spare seedling frame 38 into the expanded state, so that the operator who replenishes the seedling is easily aware.

  Further, if the sensor to be detected recognizes that there is a seedling, it is not necessary to replenish, so it is better to stop only the aircraft or continue automatic running.

  A detection device (not shown) for detecting the presence or absence of seedlings is provided on the seedling stage 51. In the case of detection, it is not necessary to replenish, so automatic traveling is continued.

  Further, when it is detected that there is a seedling on the seedling stage 51 and it is detected that there is no seedling in the seedling tank, even if it is detected that there is a seedling in the spare seedling frame 38, it may be rotated to the deployed state. .

  Further, when it is detected by a detection device (not shown) that seedlings have been replenished to the seedling stage 51 and the preliminary seedling frame 38, the state is automatically switched from the developed state to the stacked state.

  In addition, a detection device (not shown) for detecting that the worker who has completed the replenishment work has exited the airframe is provided, and when it is detected, automatic traveling control is started again.

  Therefore, the workability at the time of replenishing seedlings is improved, and the machine body using automatic traveling can be safely operated.

  In addition, in the barn and the roadway outside the farm, the machine body is manually operated, so that the machine body can be manually operated by rotating the handle 34 upward by the handle vertical movement mechanism 34a. It should be noted that the shape of the handle 34 may be a non-interfering shape such as a half-moon shape (not shown) or a deformed shape that does not draw an arc so that the handle 34 and the reserve seedling frame 38 do not interfere with each other. .

  Further, the traveling vehicle body 2 can be selected by an operator's operation and unmanned traveling, and can be switched between the stacked state and the unfolded state only during unmanned traveling.

  The rotation direction of the spare seedling frame 38 above the handle 34 is such that a plurality of preliminary seedling placement members 38c positioned below the stacked state rotate to the front side of the machine body, and a plurality of preliminary seedling frames 38 positioned above the loaded state. By rotating the seedling placing member 38a to the rear of the machine body, interference with the handle 34 can be further prevented.

  A rotation switch 31 a for rotating the preliminary seedling frame 38 may be provided behind the seat 31. When replenishing seedlings on the seedling stage 51, there is no need to move the control unit 33 to the front side of the machine body and rotate the preliminary seedling stage, so that operability and workability are improved.

  Moreover, the control apparatus 100 which can set the detailed position of an agricultural field, such as a border, by the position information acquisition apparatus 200 which can recognize the position of a body is provided. That is, the shape of the field can be recognized.

  The control device 100 can automatically rotate the preliminary seedling frame 38 when the machine body reaches a predetermined position.

  The seedling transplanter according to the present invention is not limited to a rice transplanter, and may be used as a seedling transplanter for planting other seedlings such as vegetable seedlings.

2 traveling vehicle body 33 control section 34 handle 34a handle vertical movement mechanism 38 preliminary seedling frames 38a, 38b, 38c multiple preliminary seedling mounting members 39a, 39b, 39c multiple moving link members 49 support machine frame 68 seedling box 100 control device 101 seedling Box-mounted member 101a Overall movement state 101b Individual movement state

Claims (4)

A plurality of preliminary seedling placement members (38a, 38b, 38c) for placing seedling boxes (68) or seedlings on a support machine frame (49) provided on the traveling vehicle body (2) and the plurality of preliminary seedling placement members (38a, 38b, 38c) are attached to a plurality of movable link members (39a, 39b, 39c), and a plurality of preliminary seedling placing members are rotated by rotation of the plurality of movable link members (39a, 39b, 39c). (38a, 38b, 38c) A seedling provided with a spare seedling frame (38) configured to be switchable between an unfolded state in which the front and rear directions are aligned and a stacked state in which a plurality of spare seedling placement members (38a, 38b, 38c) are vertically aligned. In the transplanter,
The seedling transplanting machine, wherein the preliminary seedling frame (38) is provided above the control section (33) for operating the machine body.   The steering section (33) is provided with a handle (34) for steering the airframe, and the handle (34) is rotated downward by a handle vertical movement mechanism (34a) capable of rotating the handle (34) up and down. The seedling transplanter according to claim 1, wherein the seedling transplanter (38) can be switched from the stacked state to the deployed state when moved. A position information acquisition device (200) that acquires the position coordinates of the traveling vehicle body (2), an automatic traveling device (205) that automatically operates the aircraft by operating the handle (34), and a control that controls each part of the aircraft An apparatus (100),
The state in which the handle (34) is rotated downward can be controlled by the automatic travel device (205), and the state in which the handle (34) is rotated upward is capable of manual operation by an operator. The seedling transplanter according to claim 1 or 2, wherein the seedling transplanter is provided.   When the aircraft arrives at the edge of the preset farm field from the position information acquisition device (200) and the control device (100), the aircraft is stopped and the preliminary seedling frame (38) is moved from the stacked state to the deployed state. The seedling transplanter according to claim 3, wherein the seedling transplanter switches automatically.