JP2023064298A - seedling transplanter - Google Patents

Abstract

To stably carry an empty seedling box after use to a seedling supply position with the empty seedling box mounted on a traveling vehicle body while continuing transplantation work and facilitate taking out of the empty seedling box near a ridge, in a seedling transplanter including a seedling planting device in a machine body rear part, in which a preliminary seedling box can be mounted in a preliminary seedling mounting part on a vehicle body side.SOLUTION: In a seedling transplanter in which a seedling transplanting part 4 is mounted in the rear part of a traveling vehicle body 2, and preliminary seedling mounting bases 38, 38 are provided in right and left side parts, respectively, the preliminary seedling mounting base 38 is provided with an empty seedling box frame 80 in which empty seedling boxes are vertically arranged in parallel.SELECTED DRAWING: Figure 9

Description

TECHNICAL FIELD The present invention relates to a seedling transplanter in which a planting device for planting seedlings in a field is connected to the rear part of a traveling vehicle body, and belongs to the technical field of agricultural machinery.

Patent document 1 describes a seedling transplanter having a seedling planting device at the rear part of the machine body, and having a spare seedling placing part including a plurality of spare seedling places at the side part of the machine body.

By carrying out the transplant work with the supply seedling box mounted on the spare seedling loading part, the transplant work can be performed for a long time while supplying the seedlings in the field during the transplant work, and the frequency of returning to the furrow to supply the seedlings is reduced. efficient porting work.

Japanese Patent Application Laid-Open No. 2021-83423

However, by loading a supplementary seedling box on the spare seedling loading section, the seedling tank of the seedling planting device can be replenished with seedlings from the seedling box for a long transplanting operation. When transplanting work is continued with empty parts of the car body or the spare seedling loading part, empty seedling boxes may slide down or be blown away by the wind because they are light.

The present invention provides a seedling transplanter in which a seedling planting device is provided at the rear of the machine body and a spare seedling box can be loaded on the spare seedling loading section on the side of the machine body, and the used empty seedling box can be stably placed on the running machine body. To make it easy to take out an empty seedling box at the edge of a ridge by carrying the seedlings to a seedling supply area while continuing the transplanting work.

The above problems of the present invention are solved by the following technical means.

The invention of claim 1 is a seedling transplanter in which a seedling planting part 4 is mounted on the rear part of a traveling vehicle body 2 and preliminary seedling mounting bases 38, 38 are provided on the left and right sides. The seedling transplanter is characterized by providing an empty seedling box frame 80 arranged vertically side by side.

The invention of claim 2 is the seedling transplanter of claim 1, wherein the empty seedling box frame 80 is composed of a frame rail 80A with a bottom plate on the outside of the body and a bottomless frame rack 80B on the inside.

The invention of claim 3 is the seedling transplanter of claim 1, wherein the enclosing frame 82 of the empty seedling box frame 80 has left and right lateral frames 82a lower than the front and rear outer frames 82e.

In the invention of claim 1, the seedling tank of the seedling planting part 4 is replenished with seedling mats, and the remaining empty seedling boxes are stored in the empty seedling box frame 80 to continue the transplanting work, so that the empty seedling boxes are not an obstacle. The seedlings can be stably transported to the seedling supply area without dropping them in the field.

According to the invention of claim 2, when the empty seedling boxes are vertically raised and placed on the bottomless frame rack 80B, a plurality of empty seedling boxes can be loaded without accumulating water, and can be moved from the bottomless frame rack 80B to the bottom plate attached frame rail 80A. Instead, by pulling out the traveling vehicle body 2 in the longitudinal direction, the empty seedling box can be easily lowered to the ground without falling on the way.

According to the third aspect of the invention, since the right and left lateral frames 82a of the surrounding frame 82 of the empty seedling box frame 80 are lower than the front and rear outer frames 82e, it is easy to lift and pull out the traveling vehicle body 2 in the longitudinal direction.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the riding type rice transplanter of one Embodiment of this invention. Fig. 2 is a plan view of the riding-type rice transplanter of Fig. 1; Fig. 2 is a side view of the riding-type rice transplanter according to the embodiment of the present invention, in which the preliminary seedling stands are arranged vertically in three stages (stacked state); FIG. 2 is a schematic side view of the riding-type rice transplanter according to one embodiment of the present invention, in which preliminary seedling stands are arranged vertically in three stages (stacked state). Fig. 2 is a side view of the riding-type rice transplanter according to one embodiment of the present invention when the spare seedling mounting bases are arranged on the same plane (deployed state); 1 is a schematic side view of a ride-on type rice transplanter according to an embodiment of the present invention, in which the preliminary seedling mounts are arranged on the same plane (deployed state); FIG. Fig. 2 is a plan view of the riding-type rice transplanter according to one embodiment of the present invention when the spare seedling mounting bases are arranged on the same plane (deployed state); Fig. 4 is a rear view of an empty seedling box frame provided on a preliminary seedling mounting base of the riding rice transplanter according to one embodiment of the present invention; 1 is an enlarged front view of an empty seedling box frame of a riding rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of an empty seedling box frame of a riding rice transplanter according to one embodiment of the present invention; FIG.

Preferred embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are a side view and a plan view of a riding-type rice transplanter equipped with a fertilizing device as a granular material delivery device, which is a typical example of the seedling transplanter of the present invention. In this riding-type rice transplanter 1 with a fertilizing device, a seedling planting unit 4 is attached to the rear side of a traveling vehicle body 2 via an elevating link device 3 so as to be able to move up and down, and a main body of a fertilizing device 5 is mounted on the rear upper side of the traveling vehicle body 2. is provided. When the boarding operator faces the forward direction of the riding rice transplanter 1, the left and right directions are referred to as left and right, respectively, and the forward and backward directions are referred to as front and rear, respectively.

The traveling vehicle body 2 is a four-wheel drive vehicle having a pair of left and right front wheels 10, 10 as driving wheels and a pair of left and right rear wheels 11, 11 (traveling device). Front wheel final cases 13, 13 are provided on the left and right sides of the transmission case 12, and left and right front wheels protrude outward from 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 attached to the axle. A front end portion of a main frame 15 is fixed to the rear surface portion of the transmission case 12, and rear wheel gear cases 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18 is supported to be freely rolling, and rear wheels 11, 11 are attached to rear wheel axles projecting outward from rear wheel gear cases 18, 18. As shown in FIG.

An engine 20 is mounted on the main frame 15 , and 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 changed in speed by the transmission in the case 12, and then separated into traveling power and external power and taken out. A part of the driving power is transmitted to the front wheel final cases 13, 13 to drive the front wheels 10, 10, and the rest is transmitted to the rear wheel gear cases 18, 18 to drive the rear wheels 11, 11. The external extracting power is transmitted to the planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling planting section 4 by the planting transmission shaft 26. is transmitted to

An upper portion of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 containing various operating mechanisms is provided in front of the seat 31, and a steering wheel 34 for steering the front wheels 10, 10 is provided above the front cover 32. Horizontal floor steps 35 are formed on both left and right sides of the lower ends of the engine cover 30 and the front cover 32 . The floor step 35 is partly grid-shaped (see FIG. 2) so that the mud on the shoes of the worker walking on the step 35 falls onto the field. The rear part above the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

The lifting link device 3 is a parallel link mechanism, and includes one upper link 40 and a pair of left and right lower links 41 , 41 . These links 40, 41, and 41 are rotatably attached at their base sides to a rear sight gate-shaped link base frame 42 erected at the rear end of the main frame 15, and a vertical link 43 is connected to their tip sides. ing. A connecting shaft 44 rotatably supported by the seedling planting section 4 is inserted into and connected to the lower end of the vertical link 43 , and the seedling planting section 4 is connected to the seedling planting section 4 so as to roll around the connecting shaft 44 .

A lifting 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) integrally formed with the upper link 40. The upper link 40 rotates up and down by expanding and contracting with hydraulic pressure, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

The seedling planting part 4 is composed of 6 rows of planting, and includes a transmission case 50 that also serves as a frame, a mat seedling taken out from a seedling box, and reciprocates left and right to take out the seedlings one by one at each seedling outlet 51a, . When all the seedlings for one horizontal row are supplied to the seedling outlets 51a, . a seedling planting device 52 for planting the seedlings supplied to .

A center float 55 is provided in the center of the lower part of the seedling planting part 4, and side floats 56, 56 are provided on both left and right sides thereof. When the machine body is advanced with these floats 55, 56, 56 in contact with the muddy surface of the field, the floats 55, 56, 56 slide while leveling the muddy surface, and the seedling planting device 52, Seedlings are planted by ... Each float 55, 56, 56 is rotatably mounted so that the front end side moves up and down according to the unevenness of the topsoil surface of the field. (not shown), and by switching a hydraulic valve (not shown) that controls the elevation hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4, the seedling planting depth is kept constant.

The fertilizing device 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a given amount by the feeding portions 61, . . . attached to the fertilization guide (not shown), and dropped into the fertilization structure formed near the side of the seedling planting row by the groove body 76 (Fig. 1) provided on the front side of the fertilization guide. It has become. Air generated by a blower 58 driven by a blower electric motor 53 is blown into the fertilizing hoses 62, through an air chamber 59 elongated in the left-right direction, and the fertilizer in the fertilizing hoses 62, . It is designed to be forcibly conveyed by wind pressure.

A rotor 27 (a combination of the first rotor 27a and the second rotor 27b may be simply referred to as the rotor 27) is attached to the seedling planting section 4 as an example of a leveling device. The seedling mounting table 51 slides in the left-right direction using support rollers 65a of a rectangular support frame 65 that supports the entire seedling planting unit 4 in the left-right direction and the up-down direction as rails.

Also, on the left and right sides of the front portion of the traveling vehicle body 2, a pair of spare seedling mounting bases 38, 38 on which replenishment seedlings are placed are rotatable between a position projecting forward and backward of the body and a position aligned vertically. is provided.

FIG. 3 shows a side view when the first preliminary seedling placement table 38a, the second preliminary seedling placing table 38b, and the third preliminary seedling placing table 38c on one side of the machine body are arranged vertically in three stages, and a simplified side view is shown. It is shown in FIG. FIG. 5 shows a side view when the first preliminary seedling placement table 38a, second preliminary seedling placement table 38b, and third preliminary seedling placement table 38c are arranged on the same plane, and FIG. 6 shows a simplified side view thereof.

The preliminary seedling mounting table 38 is supported by a supporting machine frame 49 whose base side is arranged under 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. It consists of a preliminary seedling mounting table 38a, a second preliminary seedling mounting table 38b and a third preliminary seedling mounting table 38c.

A first support frame 37a, a second support frame 37b and a third support frame are integrally mounted on the bottom surfaces of the first preliminary seedling placement table 38a, the second preliminary seedling placement table 38b and the third preliminary seedling placement table 38c, respectively. A body 37c is attached to the central portion of the first support frame 37a and the front end of the second support frame 37b. Rotating shafts 39b1 and 39b2 at both ends of the second moving link member 39b are rotatably connected to the rear end of the first support frame 37a and the front end of the third support frame 37c, respectively. Rotating shafts 39c1 and 39c2 at both ends of the third moving link member 39c are rotatably connected to the rear end portion of the second support frame 37b and the central portion of the third support frame 37c.

The outer peripheral portions of the rotating shafts 39a2, 39b1, 39b2, 39c1 are attached by welding to the support frames 37a, 37b, 37c. Support pieces (not shown) of the moving link members 39a, 39b, and 39c are inserted into insertion portions (not shown) of the rotating shafts 39a2, 39b1, 39b2, and 39c1 welded to the support frames 37a, 37b, and 37c. is inserted and installed.

Further, a rotation fulcrum (rotation shaft) 37b1 is provided at approximately the center of the second moving link member 39b and approximately the center of the second support frame 37b, so that they are rotatable relative to each other.

The support machine frame 49 is provided with two front and rear branch struts (branch support machine frames) 49a and 49b, and the tops of the branch struts 49a and 49b reach near the lower surface of the second support frame 37b. A rotating shaft (rotating fulcrum) 39b3 provided near the center of the second moving link member 39b is provided near the top of the front side branch strut 49a. 39b is rotatable around the front side branch strut 49a. The rotating shaft 39b3 is provided on the second moving link member 39b below the rotating fulcrum 37b1.

A rotation shaft (rotation fulcrum) 39c3 provided near the rear end portion of the third moving link member 39c is provided near the top portion of the rear side branch strut 49b, and the third movement is performed around the rotation shaft 39c3. The link member 39c is rotatable around the rear side branch strut 49b. The rotating shaft 39c3 is provided on the third moving link member 39c below the rotating shaft 39c1.

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

Therefore, as shown in the plan view of FIG. 7, when the first preliminary seedling mounting table 38a, the second preliminary seedling mounting table 38b and the third preliminary seedling mounting table 38c are laid out on substantially the same plane, a wide seedling box 68 and the like can be obtained. When trying to obtain a mounting plane of , these three preliminary seedling mounting bases 38a, 38b, 38c can be moved more forward than in the conventional case, and the front end of the machine body can be protruded outside the field. For example, it becomes easy to load the seedlings from a truck or the like on the preliminary seedling loading tables 38a, 38b and 38c at the edge of the ridge.

Further, as shown in the plan view of FIG. 7, a pair of front projections 38a1, 38b1, 38c1 projecting forward are provided at both front end portions of the first, second, and third preliminary seedling placement bases 38a, 38b, 38c. Rear projections (rear projections) 38a2, 38b2, 38c2 projecting rearward are formed at the center of the rear end.

Therefore, when the first, second, and third spare seedling placement tables 38a, 38b, and 38c are in the unfolded form, the rear protruding portions 38a2 and 38b2 of the spare seedling placement tables 38a and 38b located on the front side of the machine body move toward the rear side of the machine body. It is arranged at a position that overlaps the front protruding portions 38b1 and 38c1 of the positioned preliminary seedling placement bases 38b and 38c in a side view. Therefore, when the first, second and third spare seedling placement boards 38a, 38b and 38c are arranged in the longitudinal direction, the first, second and third spare seedling placing boards 38a, 38b and 38c are arranged in the longitudinal direction. Since the seedling boxes 68 to be loaded on the spare seedling placing tables 38a, 38b, 38c can be smoothly moved rearward, the work efficiency is improved as compared with the conventional case.

Further, as shown in the side views of FIGS. 3 and 5, the front protrusions 38a1, 38b1, 38c1 of the first, second, and third preliminary seedling placement tables 38a, 38b, and 38c have a rear upward slope shape (rear upward slope portion). ), and the inclined top surface is higher than the seedling mounting surfaces of the preliminary seedling mounting bases 38a, 38b, and 38c. Further, the rear projections 38a2, 38b2, 38c2 of the first, second, and third preliminary seedling mounts 38a, 38b, 38c are set higher than the seedling mount surfaces of the respective preliminary seedling mounts 38a, 38b, 38c, and the front side It is the same as or lower than the upper surface of the projections 38a1, 38b1, 38c1.

Since the front projections 38a1, 38b1, and 38c1 are formed as rear upwardly inclined portions in this way, when the first, second, and third preliminary seedling mounting bases 38a, 38b, and 38c are deployed, the front auxiliary seedling mounting bases can When the seedling boxes 68 (see FIG. 12) and the like are moved from 38a, 38b to the rear spare seedling mounting bases 38b, 38c, the seedling boxes 68 can be placed on the rear ascending slope and moved backward. It becomes easier to move such as, and the work efficiency is improved more than before.

In addition, the top surfaces of the front projections 38a1, 38b1, 38c1 and the rear projections 38a2, 38b2, 38c2 are higher than the seedling mounting surfaces of the seedling mounting bases 38a, 38b, 38c. Seedlings placed on the preliminary seedling platforms 38a, 38b, 38c by the front protruding parts 38a1, 38b1, 38c1 and the rear protruding parts 38a2, 38b2, 38c2 when the seedling platforms 38a, 38b, 38c are in the storage mode. Since the boxes 68 and the like can be prevented from moving forward and backward, the seedling boxes 68 and the like are prevented from falling downward from the respective preliminary seedling placing tables 38a, 38b and 38c, and the need to pick up the fallen seedling boxes 68 and the like is eliminated. , work efficiency is improved than before.

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

In this way, the receiving members 38b3, 38c3 between the left and right sides of the front projections 38b1, 38c1 of the respective preliminary seedling mounts 38b, 38c receive the rear projections 38a2, 38b2 of the respective front preliminary seedling mounts 38a, 38b. Therefore, the preliminary seedling mounting bases 38a, 38b, 38c are prevented from being lowered too much, and the unfolded preliminary seedling mounting bases 38a, 38b, 38c are reliably lined up substantially on the same plane. Loading work such as 68 is facilitated, and work efficiency is improved more than before.

In addition, by providing the receiving members 38a3, 38b3, 38c3 at the bottoms of the preliminary seedling mounts 38a, 38b, 38c, the upper ends of the rear protrusions 38a2, 38b2, 38c2 are aligned with the upper ends of the front protrusions 38a1, 38b1, 38c1. Since the seedling boxes 68 and the like placed on the front protrusions 38a1, 38b1, and 38c1 having rear upward slopes can be smoothly moved, work efficiency is improved compared to the conventional art. also improve.

First, second and third partition walls 38a4 and 38b4 for preventing seedling boxes 68 from falling are provided at four places in total on the left and right side surfaces of the first, second and third spare seedling mounting bases 38a, 38b and 38c. , 38c4 are arranged respectively.

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

As described above, the first, second, and third spare seedling mounts 38a, 38b, and 38c move forward and backward by the operation (rotation) of the first, second, and third moving link members 39a, 39b, and 39c. The arrangement can be switched between the unfolded state and the stacking state in which the preliminary seedling mounts 38 a , 38 b , 38 c are arranged in the vertical direction. The switching drive device 70 has a disc-shaped, semi-circular or semi-circular shape that rotates integrally with a driving gear 71a attached to a rotating shaft (not shown) of the electric motor 71 and a rotating shaft 39b3 of a moving link member 39b that meshes with the driving gear 71a. A half-moon-shaped switching gear 70a is provided.

The switching gear 70a is provided concentrically with the rotating shaft 39b3 of the moving link member 39b provided on the front side branch strut 49a, and rotates integrally with the rotating shaft 39b3. rotates, and at the same time the second moving link member 39b integral with the rotating shaft 39b3 rotates, so that the first, second, and third moving link members 39a, 39b, and 39c are in a stacked state and an unfolded state. can be switched.

8 to 10 show an empty seedling box frame 80 attached to the preliminary seedling mounting table 38. FIG.

Support bases 81a are provided laterally by front and rear support columns 81 on the inner side surfaces of the first preliminary seedling mounting base 38a. The surrounding frame 82 is partitioned into a frame rail 80A with a bottom plate and a bottomless frame rack 80B by front and rear partition rods 82c. A bottom plate-equipped frame rail 80A is provided with a bottom plate 83, and a bottomless frame rack 80B surrounded by an inner frame 82b and a partition rod 82c is wider than the bottom plate-equipped frame rail 80A and does not have a bottom plate, and three or four seedling boxes can be placed sideways. A frame rail 80A with a bottom plate, which can be placed vertically and whose outer frame 82e is tilted to open upward, allows one seedling box and a seedling board to be placed vertically. Further, the left and right lateral frames 82a of the enclosing frame 82 are lower than the inner frame 82b, the partition rod 82c and the outer frame 82e, making it easy to take out the empty seedling box back and forth. Since the bottom plate 83 of the frame rail 80A with the bottom plate can be pulled out while receiving the inner corner of the empty seedling box, the empty seedling box can be easily taken out in the front-rear direction.

In addition, since the surrounding frame 82 is attached to the support base 81a by knob bolts so that the position thereof can be changed forward and backward, it can be changed to a convenient position for the operator.

84 is a cup holder attached to the front and rear struts 81, into which a PET bottle can be inserted and held.

2 Traveling vehicle body 4 Seedling planting part 38 Spare seedling mounting base 80 Empty seedling box frame 80A Frame rail with bottom plate 80B Bottomless frame rack 82 Enclosing frame 82a Left and right horizontal frames 82e Front and rear outer frames

Claims (3)

A seedling transplanter in which a seedling planting part (4) is mounted on the rear part of a traveling vehicle body (2) and preliminary seedling mounting bases (38, 38) are provided on the left and right sides, and an empty seedling is mounted on the preliminary seedling mounting base (38). A seedling transplanter characterized by providing an empty seedling box frame (80) for vertically juxtaposing boxes. 2. The seedling transplanter according to claim 1, wherein the empty seedling box frame (80) is a frame rail (80A) with a bottom plate on the outside of the body and a bottomless frame rack (80B) on the inside. 2. The seedling transplanter according to claim 1, wherein the enclosing frame (82) of the empty seedling box frame (80) has left and right lateral frames (82a) lower than the front and rear outer frames (82e).

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