JP2002253010A - Transplanter seedling tray vertical feed mechanism - Google Patents

Abstract

(57) [Summary] [Problem] To place a seedling tray on a seedling transfer table arranged on an airframe, and transfer the seedling tray in a vertical direction and a horizontal direction by a transfer device provided with a vertical feed mechanism and a horizontal feed mechanism. A seedling supply mechanism for picking up seedlings from a seedling tray, and a planting mechanism provided with a planter capable of planting the seedlings supplied from the seedling supply mechanism in a field. A seedling tray vertical feed mechanism, in which a transport chain in which locking rods that engage with cells serving as pot seedling storage units provided in the seedling tray are arranged at predetermined intervals, and the transport chain is wound. Provided is a seedling tray vertical feeding mechanism which can lower a seedling splicing position in a seedling tray vertical feeding mechanism constituted by an upper sprocket and a lower sprocket. SOLUTION: A chain contact body is provided in the middle of the transfer chain (66).
The transfer chain (66) is bent by bringing the (62a) into contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling tray vertical feeding mechanism for feeding a seedling tray placed on a seedling transfer table of a transplanter vertically by a vertical feeding mechanism of a transfer device having a vertical feeding mechanism and a horizontal feeding mechanism. It is about.

[0002]

2. Description of the Related Art Conventionally, as an embodiment of a transplanting machine, a transplanting machine provided with a traveling section having wheels and an engine, an operating section having an operating handle, and a transplanting section for taking out seedlings from a seedling tray and planting them. There is a machine, and the operator can operate the operating handle provided at the rear end of the machine to run the field, and the transplanting unit can transplant the seedlings.

[0003] The transplanting section is provided in front of the operating section, a seedling carrier having a front low, a high and a rear height is provided in a side view, a carrier device is provided at the lower end of the seedling carrier, and the transplanting section is mounted on the seedling carrier. The seedling tray is conveyed forward and downward by the conveying device, the seedlings are taken out from the seedling tray by the seedling take-out claws, sent to the planting device, and planted in the field by the planting device which can be moved up and down.

[0004] In particular, the seedling tray is usually provided with cells serving as pot seedling accommodating sections for accommodating seedlings in a matrix of a plurality of rows and a plurality of columns. In order to be able to feed the seedling tray, the transport device includes a vertical feed mechanism having a transport chain that vertically feeds the seedling tray in a forward and downward direction, and a reciprocating horizontal mechanism having a horizontal feed shaft that feeds the vertical feed mechanism in the right and left directions. It consists of a feed mechanism.

[0005] The transfer chain is arranged at a position below the left and right sides of the seedling tray placed on the seedling transfer table. In particular, the transfer chain includes an upper sprocket provided at the lower end of the seedling transfer table. And the lower sprocket disposed further below the upper sprocket.

Further, locking rods are protruded from the transport chain at predetermined intervals so that the seedling tray descending along the seedling transport table is received by the locking rods. In particular, by transferring the seedling tray from the seedling transfer table to the transfer chain by engaging the locking rod with the lower side surface of the cell, which is a pot seedling storage section provided in a protruding state on the back side of the seedling tray, The seedling tray can be fed vertically to the lower sprocket side as the sprocket rotates.

[0007] The lower end of the seedling transfer table that transfers the seedling tray from the seedling transfer table to the transfer chain is a seedling transfer position that determines the timing of the seedling transfer operation for setting a new seedling tray on the seedling transfer table. A sensor is provided at the seedling splicing position, and when the sensor detects that the rear end of the seedling tray has reached the seedling splicing position, an alarm is sounded to encourage the worker to carry out the seedling splicing operation. .

[0008] By doing so, the seedlings are connected without generating a gap between the seedling tray that is vertically fed by the transfer device and the seedling tray that is newly set on the seedling transfer table by the seedling connection operation. In addition, the seedlings are continuously and reliably supplied to the seedling removal nails so that the planting operation can be performed.

[0009]

However, the following problems still remain to be solved in the above transplanter.

[0010] That is, since the transfer position of the seedling tray from the seedling transfer table to the transfer chain is high, the position where the seedlings are connected to the seedling tray is high, and there is a problem that it is difficult for a person of short height to carry out the seedling connection work.

[0011] Also, the high splicing position of the seedling tray means that the position of the lower end of the seedling carrier is high,
Naturally, the upper end of the seedling carrier must be higher accordingly, so that the upper end of the seedling carrier obstructs the field of view of the operator who operates the operation unit, and the forward visibility is poor when moving. There was a problem of becoming.

Further, since the upper end of the seedling carrier is greatly extended upward, contact is likely to occur at the upper end during transportation, and the seedling carrier is likely to be deformed or damaged. In such a case, a structure such as a folding mechanism is required, which complicates the structure and increases the manufacturing cost.

[0013]

In order to solve the above-mentioned problems, according to the present invention, a seedling tray is placed on a seedling carrier mounted on an airframe, and the seedling tray is provided with a vertical feed mechanism and a horizontal feed mechanism. A seedling supply mechanism that takes out seedlings from a seedling tray while being transported in the vertical and horizontal directions by the transport device, and a planter that can plant the seedlings supplied from the seedling supply mechanism in a field. A seedling tray vertical feeding mechanism of a transplanting machine having a planting mechanism portion, wherein locking rods engaging with cells serving as pot seedling storage portions provided on the seedling tray are arranged at predetermined intervals. In a vertical feeding mechanism of a seedling tray configured by a transport chain and an upper sprocket and a lower sprocket wound by the transport chain, the transport chain is bent by bringing a chain contact body into contact with a middle portion of the transport chain. I did it.

In particular, the chain contact body can be freely attached to and detached from the chain contact body mounting plate provided on the machine frame of the machine body, and can be moved forward and backward along the chain contact body mounting plate. ,
The arrangement position of the chain contact body can be adjusted.

Therefore, the seedling transfer position can be lowered, so that the seedling transfer operation can be performed easily, and the seedling transfer table is lowered so that the upper sprocket side of the bent transfer chain is covered with the seedling transfer table. Therefore, the upper end position of the seedling carrier can be lowered, and the field of view of the worker can be prevented from being blocked by the seedling carrier.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, there is provided a transplanting machine having a vertical feed mechanism capable of vertically transporting a seedling tray of a seedling transport table and a transport device having a horizontal transport mechanism capable of transporting the seedling tray in a horizontal direction. The vertical feed mechanism of the machine is composed of an upper sprocket, a lower sprocket, and a transport chain wound around the upper and lower sprockets. By doing so, the transport chain is bent. Therefore, the transfer position of the seedling tray to the transport chain can be lowered, and the seedling splicing position can be lowered.

That is, the splicing position can be achieved without changing the arrangement positions of the rotary shaft having the upper sprocket mounted thereon and the rotary shaft having the lower sprocket mounted thereon or changing the shapes of the upper sprocket and the lower sprocket. Can be lowered, and the breeding position can be lowered without increasing the manufacturing cost, thereby improving workability.

Further, since the entire seedling carrier can be lowered, the height of the upper end of the seedling carrier can be reduced, and the forward visibility can be improved. Further, it is not necessary to provide a folding mechanism or the like on the seedling carrier, so that the configuration of the seedling carrier can be simplified and reduced in weight, and the strength can be increased.

In particular, the chain contact body can be freely attached to and detached from a chain contact body mounting plate disposed on the machine frame of the machine body, and can be moved back and forth along the chain contact body mounting plate. By doing so, the contact position of the transfer chain of the chain contact body can be adjusted according to the form of the seedling tray, and it is possible to cope with various types of seedling trays.

Hereinafter, an embodiment of the present invention will be described in further detail with reference to the drawings.

[0021]

FIG. 1 is an overall side view of a transplanter A according to the present embodiment, and FIG. 2 is an enlarged side view of a seedling supply mechanism part a as a main part.

The transplanter A according to this embodiment has a body frame.
A traveling unit 1 is provided at a lower portion of the vehicle 10, and a prime mover unit 2 is provided at an upper portion of the upper portion, an implanting portion 3 is provided at a rear portion thereof, and an operation portion 4 is further provided at a rear portion thereof, thereby forming an airframe. Then, the operator operates the operation unit 4 to allow the transplant unit 3 to continuously transplant the pot seedlings to the ridge B1 of the field B while the traveling unit 1 travels the field B.

The traveling unit 1 has a pair of left and right idle wheels 11, 11 mounted on front portions of the body frame 10 via idle wheel support arms 12, 12, respectively, and a pair of right and left idle wheels via transmission cases 14, 14 on the rear. Are mounted respectively.

The motor unit 2 has an engine 21 mounted thereon and is capable of transmitting power to the traveling unit 1 and the transplanting unit 3 via a transmission belt 22. 23 is a fuel tank and 24 is a bonnet.

The operating section 4 is formed by connecting a handle frame 40 to a rear end of a substantially J-shaped rear frame 15 connected to a rear end of the body frame 10. Equipped with operating tools. In the figure, 41 is a main clutch lever, 42 is a planting clutch lever, 43 is a side clutch lever, 44 is a traveling main transmission lever, 45 is a stock adjustment lever,
46 is a handle end bar.

The transplanting section 3 is composed of a seedling supply mechanism a disposed at the rear of the body frame 10 and a planting mechanism 7 disposed immediately below the seedling supply mechanism a.

The seedling supply mechanism a includes the rear frame 15
A seedling carrier 63 on which the seedling tray 9 is placed is disposed above and below the front, rear and rear sides in a side view. Note that the seedling tray 9 is made of a flexible synthetic resin, and is formed by forming cells 91 serving as a plurality of pot seedling storage units.

The seedling carrier 63 has a vertical feeding mechanism for vertically feeding the seedling tray 9 vertically downward and a horizontal feeding mechanism (not shown) for reciprocating the same vertically and horizontally. The transfer device comprising the double feed mechanism is provided with the engine
It is linked to 21.

The traverse mechanism is provided with a traverse shaft and is provided with a seedling carrier.
The seedling tray 63 is configured to be reciprocally movable in the left and right directions, and the seedling tray 9 is intermittently moved in the left and right directions by one pitch for each cell 91, and is laterally moved in the opposite direction at the end of the horizontal movement.

The vertical feed mechanism includes a lower sprocket 64 disposed at both ends of a rotating shaft 64a rotatably mounted on a machine frame 60 (see FIG. 3) supporting the seedling supply mechanism a, and a machine frame 60 similarly.
It comprises an upper sprocket 65 disposed at both ends of a rotating shaft 65a which is rotatably mounted horizontally, and a transport chain 66 wound between the sprockets 64, 65 (see FIG. 2). Reference numeral 61 denotes a cover case of the transport chain 66.

As shown in FIG. 3, the transport chain 66 is provided with a locking rod 67 projecting from a side surface thereof.
Aligned in the vertical transport direction of the seedling tray 9 fed along
The seedling tray 9 is supported by being inserted between the cells 91 and engaging with the lower side surface of the cell 91. By rotating the lower sprocket 64 intermittently, the seedling tray 9 is vertically fed to the lower sprocket 64 side by one pitch for each cell 91.

In FIG. 3, reference numeral 51 denotes a seedling splicing sensor switch.
The contact plate 52 urged to abut against the seedling tray 9
That is, when the rear end 9a of the seedling tray 9 passes through the contact plate 52, the contact plate 52 is moved upward by the urging, and the seedling sensor switch 51 is turned on to sound the seedling alarm buzzer. Like that. Reference numeral 95 denotes a seedling tray holding rod, which is disposed so as to be in contact with the upper surface side of the seedling tray 9 so as to convey the seedling tray 9 without being lifted.

The planting mechanism 7 has a planting transmission case 71 provided behind the engine 21, and a planting device 72 is disposed above the planting transmission case 71 in interlocking connection with the planting transmission case 71. ing. The planting transmission case 71 is also operatively connected to the above-described seedling supply mechanism a disposed at a rear upper position of the planter 72.

The implanter 72 has a pair of tapers in the shape of a tapered half-split pot that can be opened and closed. It is possible to move up and down with L. The planter 72 receives a pot seedling from a seedling removal nail (not shown) of the seedling supply mechanism unit a, and then opens the nail when it enters the ridge B1 so that the pot seedling can be transplanted. .

Reference numeral 73 denotes a front slide rail, and reference numeral 74 denotes a rear slide rail, which supports the planting mechanism 7 so as to be slidable left and right, and can be adjusted by a slide adjustment lever 47 provided on the operation section 4. . Reference numeral 75 denotes a drive mechanism of the implanter 72, reference numeral 76 denotes a pressure-reducing roller, reference numeral 77 denotes a support frame of the pressure-reducing roller 76, and reference numeral 78 denotes a scraper that scrapes off mud and soil adhering to the implanter 72.

Hereinafter, the vertical feeding mechanism of the seedling supply mechanism a, which is a main part of the present invention, will be described with reference to FIG.

As described above, the vertical feed mechanism includes the lower sprocket 64, the upper sprocket 65, and the two sprockets 6
The transport chain 66 is wound between 4, 65.

In the present invention, the lower sprocket 64
The chain contact body 62a is brought into contact with the upper transfer chain 66a, which receives the seedling tray 9 that has been fed on the seedling transfer table 63, of the transfer chain 66 wound around the upper sprocket 65 and pressed. By doing so, the transport chain 66 is bent at the part of the chain contact body 62a.

The chain contact member 62a is attached to a chain contact member mounting plate 62 disposed on the machine frame 60, and is adapted to the shape of the seedling tray 9, particularly, the arrangement pitch of the cells 91. Thus, the position of the chain contact body 62a can be shifted back and forth. Reference numeral 62b is an attachment bolt for fixing the chain contact body 62a to the chain contact body mounting plate 62, and reference numeral 62c.
Is a fixing nut screwed into the mounting bolt 62b.

In this embodiment, the screw holes (not shown) of the chain contact body mounting plate 62 into which the attachment bolts 62b are inserted are formed as elongated holes extending in the front-rear direction. The position of the body 62a can be shifted back and forth.

The structure that allows the position of the chain contact member 62a to be shifted back and forth is not limited to the above structure, but may be an appropriate structure. For example, instead of forming the screw holes of the chain contact body mounting plate 62 into a long hole shape, a plurality of screw holes may be provided at predetermined intervals, or the mounting bolts 62b of the chain contact body 62a may be provided. The screw holes (not shown) into which the holes are inserted may be formed as elongated holes extending in the front-rear direction.

Further, in order to be able to appropriately adjust the bending state of the upper transfer chain 66a, a plurality of chain contact members 62a having different projection amounts can be replaced as necessary. . Alternatively, the chain contact body 62a
Can be made to reciprocate freely, so that the amount of protrusion can be adjusted as appropriate by reciprocating. By allowing the chain contact body 62a to freely advance and retreat, the upper transport chain 66a can be bent in accordance with various seedling trays 9 with only one chain contact body 62a, and the workability can be improved. .

The upper transfer chain 6 is moved by the chain contact member 62a.
By bending 6a, the locking position of the seedling tray 9 by the locking rod 67 provided on the transport chain 66 for locking the seedling tray 9 can be lowered, so that the seedling splicing position can be lowered. . Therefore, during the seedling connection operation performed by sounding the seedling connection alarm buzzer, the seedling connection can be performed without raising the seedling tray 9 high.
Even a short worker can carry out the seedling splicing operation without difficulty.

When the seedling transfer position is lowered, the position of the lower end 63a of the seedling transfer table 63 is also lowered.
Since the lower end 63a of 3 covers the upper transfer chain 66a, the seedling transfer stand 63 can be lowered, so that the upper end 63b of the seedling transfer stand 63 can also be lowered. The workability can be improved by making the forward field of view of the worker who performs the operation in 4 good.

Further, it is not necessary to provide a folding mechanism or the like on the seedling carrier, so that the structure of the seedling carrier can be simplified and reduced in weight, and the strength can be increased.

As described above, one transfer chain 66 is provided on each side of the seedling tray 9 to be transferred, but both transfer chains 66, 66 need not be bent by the chain contact body 62a. Only one of them, in particular, the transfer chain 66 on the side where the seedling splicing sensor switch 51 is provided may be simply bent by the chain contact body 62a.

As described above, since the seedling splicing position can be lowered by the chain contact member 62a, the disposition position and dimensions of the upper sprocket 65 and the lower sprocket 64 can be changed to greatly increase the manufacturing cost. And the seedling splicing position can be lowered.

[0048]

According to the first aspect of the present invention, it is possible to lower the seedling splicing position by bending the transport chain by bringing the chain contact body into contact with the middle portion of the transport chain. it can. Therefore, it is possible to easily perform the seedling connection operation.

Also, by lowering the seedling splicing position, the entire seedling carrier can be lowered and disposed so that the upper sprocket side of the bent transport chain is partially covered with the seedling carrier. The height of the upper end of the transfer table can also be reduced, and the forward visibility can be improved. Further, it is not necessary to provide a folding mechanism or the like on the seedling carrier, so that the configuration of the seedling carrier can be simplified and reduced in weight, and the strength can be increased.

In addition, the seedling carrier can be lowered and arranged without changing the arrangement position, dimensions, etc. of the upper and lower sprockets around which the conveyor chain is wound. Can be done.

According to the second aspect of the present invention, the chain contact body can be freely attached to and detached from the chain contact body mounting plate disposed on the machine frame of the machine body, and the chain contact body mounting plate can be detachably mounted. Can be moved back and forth in the fore-and-aft direction, and the arrangement position of the chain contact body can be adjusted, so that the contact position of the transport chain of the chain contact body can be adjusted according to the shape of the seedling tray. It can correspond to various types of seedling trays.

[Brief description of the drawings]

FIG. 1 is a side view of an implanting machine provided with a vertical feeding mechanism according to the present invention.

FIG. 2 is an enlarged side view of a seedling supply mechanism provided with a vertical feed mechanism according to the present invention.

FIG. 3 is an explanatory view of a vertical feeding mechanism of a seedling supply mechanism.

[Explanation of symbols]

 a Seedling supply mechanism 62 Chain abutment arrangement plate 62a Chain abutment 63 Seedling carrier 64 Lower sprocket 64a Rotating shaft 65 Upper sprocket 65a Rotating shaft 66 Transfer chain 66a Upper transfer chain 67 Locking rod 9 Seedling tray 91 cells

Claims (2)

[Claims] A seedling tray is provided on a seedling carrier (63) disposed on an airframe.
(9) is placed thereon, and the seedling tray (9) is taken out from the seedling tray (9) while being transported vertically and horizontally by a transport device provided with a vertical feeding mechanism and a horizontal feeding mechanism. A transplanting machine including a supply mechanism (a) and a planting mechanism (7) provided with a planter (72) capable of planting seedlings supplied from the seedling supply mechanism (a) in a field; A transfer chain in which locking rods (67) engaging with cells (91) serving as pot seedling storage units provided on the seedling tray (9) are arranged at predetermined intervals. (66) and a vertical feeding mechanism of the seedling tray (9) composed of an upper sprocket (65) and a lower sprocket (64) wound around the transport chain (66). A transfer chain (66) is bent by bringing a chain contact body (62a) into contact with the chain contact body (62a). 2. The chain abutment (62a) is a machine frame
The chain contact body (62) disposed at (60) is detachable, and the chain contact body (62) is movable forward and backward along the chain contact body arrangement plate (62). The seedling tray longitudinal feed mechanism for a transplanter according to claim 1, wherein the arrangement position of (62a) is adjustable.