JP3378486B2 - Seedling platform for seedling transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling stand of a seedling transplanter such as a rice transplanter or a strawberry transplanter, and more particularly to a technique for improving the strength of the seedling stand.

[0002]

2. Description of the Related Art Among the seedling mounts of a seedling transplanter, Japanese Patent Laid-Open No. 8-7
As disclosed in Japanese Patent No. 0633, a plurality of vertical rail members partitioning the seedling placement portion into right and left are connected and integrated by a plurality of horizontal rail members intersecting with these vertical rail members, and the vertical rail members are vertically aligned. There has been a structure in which a seedling vertical feed belt having a length extending over almost the entire direction is arranged between a pair of adjacent vertical rail members. In other words, the seedling placing section is substantially composed of a vertical feed belt, and the seedling placing table is just like a partition frame.

[0003]

In the seedling mounting table having the above structure, the contact area between the vertical rail member and the horizontal rail member is extremely small, and it is only possible to arrange one bolt for fixing these members to each other. It was the one. In other words, since each vertical rail member and each horizontal rail member are fixed relative to each other with the tightening force of one bolt, the seedling mounting table is configured to be left and right (or front and back) as a whole. It tends to be distorted, and in most cases, the diagonal length of the seedling mounting table as a whole is 15 mm to 20 m.
It was deformed to a degree different by m.

For this reason, there is no possibility that the vertical feed belt will shift to the left or right and will partially come into contact with the vertical rail member, and the vertical feed operation will become unstable or the vertical feed operation will become defective. There was room for improvement. Therefore, it was considered to equip the backside of the seedling mounting table with a diagonally crossed reinforcing member, but below the seedling mounting table, the transmission part of the vertical feed belt, the lateral feeding device of the seedling mounting table, the ridge clutch, Alternatively, many mechanical devices such as those operation wires are intricate, and it is difficult to realize them.

An object of the present invention is to increase the strength of the seedling placing table while keeping the function of the seedling placing table as small as possible from the current state.

[0006]

[Means for Solving the Problems] [Structure] A first aspect of the invention is to integrate and integrate a plurality of vertical rail members that partition the seedling placement portion into right and left by a plurality of horizontal rail members that intersect these vertical rail members. In a seedling placing table of a seedling transplanter in which a vertical seedling feeding belt having a length extending over substantially the entire length of the vertical rail member is arranged between a pair of adjacent vertical rail members, a plurality of horizontal rails is provided. The member is extended further laterally outward than the end vertical rail member located at the left and right ends of the plurality of vertical rail members, and an auxiliary vertical rail member is provided in a state of straddling the plurality of horizontal rail extension portions. At the same time, the auxiliary vertical rail members are bolted to the horizontal rail members in a side-by-side close contact with the lateral side portions of the auxiliary vertical rail members in contact with the lateral side portions of the end vertical rail members.

A second aspect of the present invention is the same as the first aspect of the present invention, in which a seedling stay for vertically controlling a seedling that extends in the longitudinal direction along the longitudinal direction of the vertical rail member is a stem portion of the seedling placed on the seedling placing portion. It is characterized in that it is arranged at a height level located at.

[Operation] In other words, the horizontal rail member is slightly lengthened to the left and right, and the plurality of horizontal rail extension portions are respectively provided on the outer sides of the outermost end vertical rail members located on the outermost left and right sides and the auxiliary vertical rail members. Since the bolts are connected with each other and the side surfaces of the auxiliary vertical rail member and the end vertical rail member are in close contact with each other, it is possible to prevent clear strain deformation of the seedling mounting table as in the conventional case. become.

That is, the horizontal distance between the bolt connection point between the endmost vertical rail member and the horizontal rail member and the bolt connection point between the auxiliary vertical rail member and the horizontal rail member is the vertical rail member and each horizontal rail member. In the normal state where and are orthogonal to each other, the length becomes the shortest, and if the seedling placing table is deformed (displaced laterally), the lateral distance is changed to be shortened. However, since the auxiliary vertical rail member and the end vertical rail member are in contact with each other and are in a positional relationship that cannot be further approached,
As a result, the deformation (lateral displacement) of the seedling stand is suppressed.

Therefore, it is possible to prevent the vertical feed belt from moving to the left or right, and the vertical feed belt may partially come into contact with the vertical rail member to make the vertical feed operation unstable or to cause the vertical feed operation failure. It will be possible to smoothly feed seedlings vertically. In this case, the length of each horizontal rail member is made a little longer, and a simple modification such that an auxiliary vertical rail member is prepared separately is used as a strength countermeasure on the lateral outside of the seedling mounting base. The seedling stand can be reinforced without interfering with other mechanical devices.

According to the structure of claim 2, there is the following action. That is, when inserting mat seedlings into the seedling mounting table for transplanting work using mat seedlings, if there are parts of poor growth such as insufficient rooting in the mat seedlings, seedling collapse occurs and subsequent transplantation You may run out of stock during work.
Therefore, the seedling stays for controlling the floating of seedlings are arranged at the stem base of the seedlings placed on the seedling placing portion, that is, at the height level located near the soil portion of the seedlings. By the seedling guiding action of the stay at the base portion of the stem, the seedbed soil portion is prevented from rising and the above-mentioned seedling collapse is suppressed, so that it becomes possible to prevent the stock stall. Moreover, the seedling stays are vertically fed by a rectifying action to the seedlings, so that the seedlings can be fed vertically more smoothly.

[Effect of the invention] As a result, the invention according to claim 1 or 2
In the seedling placing table of the seedling transplanter described in, the seedling placing table is provided outside the left and right ends thereof, by providing an auxiliary vertical rail member bolted to each horizontal rail member in close contact with the end vertical rail member.
The strength can be reinforced without changing the basic seedling table structure, strain in the cross direction of the seedling table can be avoided, and the seedlings can be smoothly fed vertically for good transplanting work. It was

In the seedling placing table according to the second aspect, by arranging the seedling stay at a relatively low position with respect to the seedling placing table,
The seedlings can be prevented from collapsing on the seedling mounting table, and the seedlings can be smoothly fed vertically.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows the strawberry transplanter, and Fig. 2
Shows an example of the seedling planting device. The seedling planting device 1 is mounted on a rear end portion of a riding traveling machine body 38 via a four-link mechanism 2 so as to be capable of being driven up and down. The seedling planting device 1 mounts a mat-shaped strawberries seedlings F, feeds them longitudinally, and laterally reciprocates laterally with a constant stroke. Exit 4
It is equipped with a planting mechanism 5 for picking up and planting one seedling from the plant, a feed case D for inputting power for driving the planting mechanism 5 from the machine body, a grounding float 6 for leveling the planting surface of the field, and the like.

As shown in FIGS. 5 to 7, the seedling table 3 has seven vertical frames (an example of vertical rail members) 3A having a partition wall 7 mounted on the upper side thereof and a plurality of horizontal frames (horizontal rails). An example of a member) is composed of a frame frame connected and integrated by 3B, and is provided between adjacent horizontal frames 3A, 3A (between adjacent partition walls 7, 7) in a vertical feed belt 15 of a vertical feed mechanism 8 described later. Has been placed. That is, the six vertical feed belts 15 are for 6-row planting that constitutes the seedling placement portion a. The vertical feed belt 15 feeds the strawberries seedlings F to the seedling take-out port 4 side by a certain distance each time the seedling placing table 3 reaches the stroke end of the lateral movement. still,
In FIG. 5, 70 is a sensor for detecting the seedling amount, and 46 is a sliding rail that is movable left and right relative to the seedling mounting table 3.

The structure of the seedling table 3 will be described in detail. A plurality of horizontal frames 3B are slightly extended further outward than the two endmost vertical frames 3A, 3A located at the left and right ends, and the plurality of horizontal frames 3B are extended. Frame 3B
One auxiliary bolt for each horizontal frame 3B in a side-by-side arrangement in which the lateral side portion of the auxiliary vertical vertical member 3C straddles the extending portion is in contact with the lateral side portion of the endmost vertical frame 3A. They are connected at 47. That is, by connecting the outermost vertical frame 3A and the auxiliary vertical rail member 3C to the left and right in a state where they are bolted to the horizontal frame 3B,
The seedling stand 3 as a whole is constructed so as to generate a strong resistance to strain and deformation, and to prevent or regulate the strain and deformation.

Further, as shown in FIGS. 2 to 4 and FIG.
A seedling stay 48 for vertically controlling the seedling floating extending in the longitudinal direction along the longitudinal direction of the vertical frame 3A is arranged at a height level positioned at the stem base of the seedling placed on the seedling placing portion a. is there. That is, a total of four brackets 49 are installed in pairs on the upper surfaces of the left and right endmost partition walls 7, 7, and a total of twelve seedling stays 48 are installed, two brackets 49 per row. The frames 50 and 51 are installed on the left and right stays 52 and 52, and the stay 52 is locked to a pair of upper and lower brackets 49 and 49. The upper edge of the partition wall 7 is closed by a cap 37 made of synthetic resin.

More specifically, the pin shafts 53, 53 provided on the upper and lower ends of the stay 52 are inserted into one of the plurality of recesses 49a formed in each bracket 49, 49, and only the upper bracket 49 is inserted. The lock member 54 provided in the above is used to prevent the recess 49a from coming off. The lock member 54 has a hook portion 54a formed at the upper end and a substantially gourd-shaped continuous hole 54b formed at the lower end, and the lower shaft 49c of the bracket 49 is positioned at the upper round hole portion of the continuous hole 54.
In addition, by setting the hook portion 54a in a locked posture in which the hook 49a is hooked on the upper shaft 49b of the bracket 49, all the recesses 49a in the upper bracket 49 are covered.

The lock member 54 is lifted up and moved,
The lower shaft 49c is positioned in the lower round hole portion of the continuous hole 54b, the hook portion 54a and the upper shaft 49b are released, and in this state, the lock member 54 is rotated about the lower shaft 49c to form the recess 49a. Can be opened, and in this state, the pin shafts 53, 53 are vertically adjusted to adjust the seedling stay 48.
The height can be adjusted. The seedling stay 48 is
The upper lateral support frame 50 is penetratingly supported in the vertical direction with respect to the seedling placing table 3, and the lower lateral supporting frame 51 is penetratingly supported in the front-rear direction with respect to the seedling placing table 3.

As shown in FIG. 2, a planting claw 9 for taking out and planting one seedling and a seedling pushing tool 10 for pushing out the seedling held by the planting claw 9 at the time of planting are attached to the planting arm 11. The planting mechanism 5 is configured to plant the seedlings by drivingly rotating the planting claws 9 so as to pass through the seedling take-out port 4.
Further, when the seedlings are taken out, an auxiliary claw 12 is provided prior to the planting claws 9 to rush near the upper part of the picked-out portion of the strawberries seedlings F on the seedling placing table 3 to ensure the separation of the seedlings.

As shown in FIGS. 1 to 3, each vertical feed mechanism 8
Is a drive pulley 1 located at a low position near the seedling take-out port 4.
3, a vertical feed belt 15 is wound around the idler pulley 14 located near the upper end of the seedling placing table 3. That is, the seedling mounting table 3 itself has vertical and horizontal frames 3
It is configured as a frame body in which A and 3B are connected, each partition wall 7 is fixed to a vertical frame 3A along the vertical direction, and the drive pulley 13 and the idle pulley 14 are attached to the vertical frames 3A and 3A adjacent to the left and right thereof. It is provided in a state of being pivotally supported.

On the back surface of the seedling placing table 3, a structure for supporting the seedling placing table 3 so as to be movable left and right is provided. That is, the mounting bracket 16 is bolted to the upper portion of each vertical frame 3A on the rear surface side of the seedling mounting table 3, and the rail bracket 17 is bolted in the left-right direction across each mounting bracket 16. The mounting bracket 16 and the rail bracket 17 constitute a bracket 18 which is connected to the seedling stand 3 while straddling the vertical feed belt 15. Then, in the support member 21 provided with the engaged portion 20 that engages with the guide groove 19 along the left-right direction of the rail fitting 17,
The columns 22 that are opposite to each other on the left and right sides of the feed case D are bolted. That is, the seedling mounting table 3 has the upper engaged portion 20.
And the lower slide rail 46 described above is supported by the feed case D so as to be movable left and right.

As shown in FIG. 3 and FIG. 10, a pedestal portion 24 on which the seedling supply box 23 can be placed while keeping its load is provided on the horizontal frame 3B connecting the upper end portions of the seedling placing table 3 to the left and right. There is. The pedestal portion 24 is located above the upper end of the vertical feed belt 15 and has an upper surface that is substantially along the conveyance surface of the vertical feed belt 15. Therefore, when seedlings are supplied to the seedling placement portion a, as shown in FIG.
3 is slid on the seedling placing part a, and then the seedling supply box 2
By swinging down and opening the front wall 23f of No. 3 and pulling out the seedling supply box 23 in that state, only the strawberries seedlings f divided into stocks are replenished on the seedling placement part a.

As shown in FIGS. 2 to 4 and FIGS. 8 and 9, of the six vertical feed mechanisms 8 arranged side by side, three pairs of adjoining ones are vertically fed. Belt 15
The tension applying means 25 for tensioning the That is,
A pair of left and right vertical feed mechanisms 8 and 8 is used as a set, and the idler pulleys 14 and 14 corresponding to the set are rotatably fitted onto a single shaft body 26, and both left and right end portions of the shaft body 26. , And between the free-running pulleys 14 and 14 are rotatably supported by a horizontal axis P by a shaft support fitting 27 shown in FIG.

The shaft 26 is provided with guide notches formed in a shaft guide fitting 28 connected to each vertical frame 3A at the left and right ends thereof and between the idle pulleys 14 and 14 along the vertical feed direction. It is inserted in the groove 29. Notch groove 2 for this guide
By 9, the shaft 26 is slidably guided in the vertical feed direction, and its position is regulated in the direction orthogonal to the vertical feed direction.

A pair of left and right vertical bar members 27B and 27B are provided on the horizontal bar member 27A which constitutes the shaft support fitting 27, and the driving pulley 1
Each vertical bar member 27 is provided in a state in which 3 extends to the alligator.
A horizontal pin 31 that locks one end of a spring 30 for tensioning the vertical feed belt 15 is continuously provided at the tips of B and 27B. The pin 31 is inserted into the guide notch groove 33 of the second shaft guide fitting 32 that is bolt-connected to the vertical frame 3A, and the notch groove 33 allows the pin 31 to slide and guide in the vertical feed direction. In addition, the position is regulated in the direction orthogonal to the vertical feed direction. The shaft guide fitting 28 and the second shaft guide fitting 32 use the same parts as shown in FIG.

Axis guide fitting 28 and second axis guide fitting 32
A second lateral pin 34 that locks the other end of the spring 30 is connected to the mounting member 16 in a state in which it is located between and. The spring 30, which is a tension spring, is located within the winding region of the vertical feed belt 15 in a side view.
That is, the spring 30 is located in a side view within a range surrounded by a transport action path of the vertical feed belt 15 for the seedlings and a return route that returns to the transport action path on the back side of the route. Since the vertical rod member 27B is restricted from contacting the second guide metal fitting 32 in the left-right direction even if the shaft support metal fitting 27 is improperly displaced to the left or right, the pair of left and right second guide metal fittings 32, 32 is formed. It is maintained in a fixed posture located between them.

As shown in FIG. 8, the idle pulley 14 is constructed by freely fitting the shaft 26 in a state where a pair of left and right pulley members 35, 35 having the same shape are in close contact with each other. The drive pulley 13 is also composed of a pair of left and right pulleys.

As shown in FIGS. 3 and 8, the shaft support fitting 27
And the axis X perpendicular to the belt conveying surface on the back surface of the seedling stand 3.
A switching lever 55 supported so as to be swingable around the
By the operation of the switching lever 55, the idle pulley 14 is displaced close to the drive pulley 13, but the tension of the belt 15 is relaxed so that the rotational force of the drive pulley 13 is not transmitted to the belt 15. The idle pulley 14 can be switched to a state in which the idle pulley 14 moves away from the drive pulley 13 so as to apply tension to the belt 15 by the urging force.

More specifically, the switching lever 55 is the first and second from the left of the vertical frame 3A in which three pairs of left and right vertical feed mechanisms 8 and 8 are arranged side by side in rear view. The support pin 5 along the axis X on the mounting bracket 56 that extends between the two
7 is provided, and the support pin 57 is inserted into and engaged with the elongated hole 58 of the switch lever 55 formed by sheet metal processing. A hole 59 provided in the vicinity of the elongated hole 58 is loosely fitted with a third pin 27C protruding from the lateral bar member 27A at a central portion in the left-right direction.

A lever guide 60 made of sheet metal for guiding the switching lever 55 is connected to the erection metal fitting 56. The lever guide 60 causes the switching lever 55 to move to the "cut" position, which is the belt loosening position, and the belt tension. Position "ON"
Guide to change the position to and the switching lever 5 at both positions
5 can be held. A wire stop pin 62 for mounting a release wire 61 is provided at an intermediate position of the switching lever 55 so as to link the edge clutch with respect to the corresponding set of the vertical feed mechanisms 8 and 8 to the on / off operation. Reference numeral 63 in FIG. 3 denotes a slack prevention member for preventing sagging when the back surface of the vertical feed belt 15 is loosened.

With the above structure, when the switching lever 55 is operated to the "ON" position of the lever guide 60, the spring 30
The upper support is elastically urged by the urging force of the upper arm, the vertical feed belt 15 is in a tensioned state, and the planting clutch is also in an engaged state. On the other hand, when the switching lever 55 is positioned at the “OFF” position of the lever guide 60, the shaft support fitting 27 is displaced to the lower side against the biasing force of the spring 30, and the idler pulley 14 is positioned closer to the drive pulley 13. As a result, the vertical feeding belt 15 becomes loose, and the vertical feeding of seedlings becomes impossible. Therefore, stop planting for 2 rows and make 4 rows planted,
It is possible to stop planting for 4 rows and make a state of 2 rows planting.

Next, the structure of the preliminary seedling stand A will be described. As shown in FIGS. 1 and 11, the mounting brackets 4 on the body 38 side are provided on the left and right of the hood 39 at the front of the body 38.
A seedling stand frame 41 having a U-shape facing downward in a front view is erected at 0 and 40, and on the outside of the seedling stand frame 41, the seedling supply box 23 for the divided strawberries seedlings, so-called wash seedlings f, is placed. A plurality of stationary seedling receivers 42 are supported, and two foldable movable seedling receivers 43 for mounting the seedling supply box 23 are supported inside the loop frame 41. The seedling frame 41 is
It is composed of a front frame 41a in a loop shape whose upper part is connected by a connecting frame 69, and left and right rear frames 41b, 41b whose upper ends are fixed to the front frame 41a.

As shown in FIG. 12, a fixed seedling receiver 42
Is configured by integrally fixing a receiving rod 42a penetratingly supported by the front and rear frames 41a and 41b, a pair of front and rear frame rods 42b, and a pair of left and right middle rods 42c. This fixed seedling receiving tool 42 is provided at four places on one side at a total of 8 places, and
The fixed seedling receiver 42 has two seedling supply boxes 23, 23.
Are placed side by side, so a total of 16 seedling supply boxes 2
3 can be installed. At the lower part of the seedling stand frame 41, there is provided a rescue plate loading section 45 for horizontally standing a seedling rescue plate 64 indicated by an imaginary line at a lateral position of the bonnet 39 and for holding a large number of them in a forward tilted posture. .

As shown in FIGS. 12 and 13, the movable seedling receiving device 43 is supported by a rocking rod 43a which is supported by the front and rear frames 41a and 41b at an axial center Q in the front-rear direction.
And a pair of front and rear stoppers 43c for keeping the rocking rod 43a in the horizontal posture shown in FIG. 13A. This movable seedling receiving device 43 is capable of mounting one seedling supply box 23, and has a seedling stand frame 41.
Is mounted at a height level between the uppermost stage and the fixed seedling receivers 42, 42 below the uppermost stage. When it is not used, it is swung upward about the axis Q by about 90 degrees, and the lock tool 44 pivotally supported by the left and right axes Y on the upper end of the rear frame 41b is swung to move the lock tool 44 as shown in FIG. As shown in (), the tip end portion of the swing bar 43a is hooked to maintain the folded posture. These two movable seedling receivers 43, 4
When 3 is added, a total of 18 seedling supply boxes 23 can be mounted.

In the above, the case of the seedling supply box 23 for accommodating the divided strawberries seedlings f has been described, but in the case of mounting the seedlings rescue plate 64 on which the mat-shaped strawberries seedlings F are placed. , As follows. Since the seedling rescue plate 64 is shorter than the seedling supply box 23, in this case, one fixed seedling receiver 42 can be equipped with three seedling rescue plates 64.

That is, as shown in FIG. 12, FIG. 14 and FIG. 15, at the rear part of the fixed seedling receiving member 42, the support plates 65 are provided at two locations, that is, the inner rod 42c inside the fuselage and the outer portion of the frame rod 42b. , 65 are attached, and a movable frame 66 formed by bending a rod into a U-shape is supported by both support plates 65, 65 so as to be slidable left and right. In addition, the fixed frame 67 formed by bending the rod material into a U-shape
It is fixed to c and the inside of the body of the frame rod 42b, and the seedling rescue plate 64 can be placed in the left-right direction over both the fixed and movable frames 66 and 67.

When the seedling supply box 23 is mounted, the movable frame 66 is pushed inward in the machine body so that its outer frame portion 66a is in the same horizontal position as the outer frame portion of the receiving rod 42a. Of. The positions of the movable frame 66 pulled out to the outside and the position retracted to the inside are determined by four beta pins 68 mounted on the movable frame 66.

[Brief description of drawings]

FIG. 1 is an overall side view showing a strawberry transplanter.

FIG. 2 is a vertical sectional side view showing the seedling planting device.

[Fig. 3] Vertical side view showing the seedling mount.

FIG. 4 is a side view showing a mounting structure of a seedling stay.

FIG. 5 is a plan view showing a seedling stand.

FIG. 6 is a plan view showing a frame of the seedling mounting table.

FIG. 7 is a rear view showing the mounting structure of the seedling stay.

FIG. 8 is a front view showing an on / off operation structure of a vertical feed mechanism.

FIG. 9 is a partially cutaway front view showing a shaft support fitting.

FIG. 10 is a perspective view showing a seedling group supply box and an upper part of a seedling stand.

FIG. 11 is a front view showing the structure of the spare seedling mounting table.

FIG. 12 is a perspective view showing a structure of a preliminary seedling stand.

FIG. 13 is a front view showing the structure of a movable seedling receiving device.

FIG. 14 is a plan view showing a state where a seedling rescue plate is mounted on a fixed seedling receiving device.

FIG. 15 is a side view showing a state in which the seedling rescue plate is placed on the fixed seedling receiving device.

[Explanation of symbols]

3A Vertical cross member 3B horizontal cross member 3C auxiliary vertical cross member 15 Vertical feed belt 48 Seedling stay a Seedling placement surface

Claims (2)

(57) [Claims] 1. A plurality of vertical rail members partitioning the seedling placement section into left and right parts are connected and integrated by a plurality of horizontal rail members intersecting with the vertical rail members, and the vertical rail members extend over substantially the entire area in the vertical direction. A seedling vertical feed belt having a length is a seedling placing table of a seedling transplanting machine arranged between each pair of adjacent vertical rail members, wherein the plurality of horizontal rail members are connected to the plurality of vertical rails. An auxiliary vertical rail member is provided that extends laterally outward further than the end vertical rail members located at the left and right ends of the rail members and straddles the plurality of horizontal rail extension portions. A seedling mounting table of a seedling transplanting machine, wherein members are bolted to each of the horizontal rail members in a side-by-side juxtaposition such that the lateral sides of the members are in contact with the lateral sides of the outermost vertical rail member. 2. A height level at which a seedling stay for restricting seedling floating, which extends in the longitudinal direction along the longitudinal direction of the vertical rail member, is located at the stem base of the seedling placed on the seedling placing portion. The seedling placing table of the seedling transplanting machine according to claim 1, wherein