JP3304538B2 - Seedling box picking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine for picking up seedling boxes arranged on the ground and raised.

[0002]

2. Description of the Related Art For rice planting, a seedling box is transported to a transplanting field.
Work to do. Generally, transportation of this seedling box first
Pick up the seedling boxes that are lined up on the
Place on a carrier such as a rack. Next, the truck with the seedling box
And so on to the transplanting field. And transported to the field
Seedling boxes are placed on a ridge once from a loading platform such as a truck to supply seedlings.
Sometimes the seedling boxes lined up in the ridge are taken into a rice transplanter. Or,
The seedling box is taken directly into the rice transplanter from a carrier such as a rack. this
In such transporting of seedling boxes, picking up seedling boxes is a labor-intensive operation, but it has not been mechanized and transporters pick up seedling boxes one by one. Is the current situation.

[0003]

As described above, picking up a seedling box is an operation that requires a great deal of labor. Because
When seedlings are grown side by side on the ground, the roots of the seedlings extend into the soil from a number of holes provided at the bottom of the seedling box, leaving the seedling box stuck to the ground. This is because it requires a great deal of power to pull it off. Also, due to watering, the floor soil in the seedling box holds a lot of water, and the ground becomes muddy, so much mud adheres to the seedling box that the weight of the seedling box to be taken up becomes heavy. That is the factor.

[0004] As described above, although the seedling box picking-up operation requires a large amount of labor, it has not been mechanized, and labor saving and efficiency have not been achieved. On the other hand, the scale of rice cultivation management is expanding, and the number of people engaged in work is aging. In such a situation, labor saving and efficiency improvement of the picking operation of the seedling box are inevitably required issues, and it is important to improve efficiency and labor efficiency of the whole rice planting operation. Issues.

[0005] In the mechanization of the seedling box picking-up operation, there is a problem that a rational structure should be adopted in accordance with the operation form, and a structure for saving space during storage and transportation. .

[0006]

In order to solve the above-mentioned problems, a traveling device 1 , a seedling box transfer device 2 for picking up a seedling box from the ground and transferring it to an airframe, and a seedling box mounting device on which a seedling box can be placed. A seedling box pick-up machine provided with a placement unit 3 and a seedling box transfer device
2 is provided so as to protrude forward from the traveling device 1 , and the seedling box transport device 2 protrudes forward from the traveling device 1.
The shaft 19 provided at the front end of the traveling device 1 with the tip of
That provided to be rotated from a state close to the ground or ground to the folding state was a seedling box picking machine characterized <br/> as.

[0007]

According to the present invention, the seedling box pick-up machine rotates the shaft 19 provided on the front side of the traveling device 1 with the tip of the seedling box transporting device 2.
When moving forward with the center of motion or close to the ground as the moving center, the seedling boxes placed side by side on the ground in front of the machine are picked up from the tip of the seedling box transport device 2 and transferred to the machine. Then, the transported seedling box is loaded on the seedling box mounting portion 3 . When storing the seedlings in a warehouse or transporting them by truck, place the seedling box transport device 2 in front of the traveling device 1.
When the tip of the shaft 19 is turned around the provided shaft 19 to the folded state, the length of the machine body is shortened and the body can be made compact.

Therefore, the operation of picking up the seedling boxes picking up the seedling boxes arranged on the ground can be mechanized, and labor and efficiency of the entire rice planting operation can be reduced. In addition, it is possible to achieve a rational configuration suitable for the operation form of the seedling box picking-up operation, and to save space during storage and transportation.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a seedling box picking machine according to the present invention. In addition, this seedling box picking machine
It can also be used as a seedling box arranging machine for arranging seedling boxes in a seedling raising house during a seedling raising operation. This seedling box pick-up machine includes a traveling device 1 that can move forward and backward, a seedling box transport device 2 on the front side of the traveling device 1, and a seedling box loading device on which a seedling box C can be placed on the rear side of the traveling device 1. It has a configuration provided with the mounting portion 3. Then, when the traveling device 1 is moved forward and the seedling box transport device 2 is transported rearward, the seedling box C is transported from the ground to the traveling device 2 so as to be in a seedling box pick-up operation state, and the traveling device 1 is moved backward. When the seedling box transporting device 2 is transported forward while moving, the seedling boxes C are brought into operation for transporting the seedling boxes C from the traveling device 2 to the ground. Further, the seedling box mounting portion 3 is configured to mount a seedling box housing frame H capable of housing a large number of seedling boxes C.

The frame structure of the airframe is such that a traveling transmission case 4 is provided on the rear side, a rear frame 5 is fixed on the front side, and an intermediate transmission case 6 is fixed on the front end. Further, a front frame 7 is fixed to the front side, and a transport case 8 is fixed to the front end. In this way, the three transmission cases 4.6.8 are arranged in the middle of the front and rear, and they are connected by the frames 5.7 to form the body frame.
System is configured. An engine E for driving the traveling device 1, the seedling box transport device 2, and the like is mounted on an engine mounting table 4a fixed to the rear of the traveling mission case 4. Further, the handle 9 is provided such that the left and right grip portions are disposed above the engine E,
The traveling base is located on the front of the engine E.
It is provided so as to be detachably attached to the upper side of the switch 4. The handle 9 is provided with handle base mounting portions on both the left and right sides so that the handle 9 can be arbitrarily replaced on the left and right sides of the seedling box mounting portion 3.

The traveling device 1 is constituted by a crawler type traveling device. Specifically, a crawler drive shaft 10 protruding from the left and right sides of the rear traveling case 4.
10 are provided with crawler driving wheels 11.1 and crawler rolling wheels 13.1 are provided on crawler rolling shafts 12 protruding from the left and right sides of the front transmission case 8.
3 are attached, and the left and right crawler driving wheels 1
Crawlers 14 and 14 are wound around the rollers 1.1 and 11 and the rolling wheels 13 and 13 respectively. Grounding portion support wheels 15 for rotatably supporting the grounding portions of the rollers 14 from above are provided to be freely rotatable by the frames 5.7.

In the traveling device 1, the right and left grounding positions of the left and right crawlers 14 are laterally oriented such that the longitudinal direction of the seedling boxes C... The seedling boxes C arranged in the front-rear direction in the state are provided at predetermined intervals from the left and right ends in the longitudinal direction of the arranged seedling boxes C. Thereby, at the time of the seedling box pick-up operation, it is possible to travel without contacting or stepping on the adjacent seedling boxes Cn adjacent to one of the right and left sides and arranged in the front-rear direction. In addition, in the operation of arranging the seedling boxes, similarly to the operation of picking up the seedling boxes, it is possible to travel without contacting or stepping on the adjacent seedling boxes Cn.
· Since the crawler traces 14T and 14T of the concave groove formed on the ground due to the contact pressure of 14 are located inside the left and right ends of the seedling boxes C arranged side by side, the seedling boxes C arranged side by side are arranged. Do not fall into the crawler traces 14T and 14T, so that the seedling boxes C can be arranged horizontally on the ground.

The seedling box transfer device 2 transfers the seedling boxes C from the ground to the second seedling box transfer device 17 (or from the second seedling box transfer device 17 to the ground). The seedling boxes C are transferred from the first seedling box transfer device 16 to a position near the front side of the seedling box mounting portion 3 (or from a position near the front side of the seedling box mounting portion 3 to the first seedling box transfer device 16). It is provided with a second seedling box transfer device 17 to be used. At a transfer takeover position between the first seedling box transfer device 16 and the second seedling box transfer device 17, a soil removal device 18 for scraping off the soil attached to the bottom of the seedling boxes C to be transferred is provided. ing.

The first seedling box transport device 16 is configured such that the first transport drive pulleys 20 are integrally rotated on both left and right sides of a first transport drive shaft 19 protruding on both left and right sides of the transport mission case 8. The first transport frames 21 are rotatably attached to both left and right ends of the drive shaft 19, and the front ends of the two frames 21
The first connection driven pulleys 22 are attached to the first connection shaft 21a so as to freely rotate. A first transport belt 23 with a lug is wound around the first transport drive pulleys 20 and the first transport driven pulleys 22 respectively. At the front ends of the first transport frames 20, 20, seedling box rakes 24, 24 are removably mounted so as to be located in front of the first transport driven pulleys 22, 22.

When the seedling box scooping tools 24, 24 are grounded on the ground or slightly penetrated under the ground, the upper end of the outer shape in a side view is low, the rear is high, and the bottom is horizontal. The rear end is inclined upward. Thus, if the seedling box scooping tools 24, 24 are advanced slightly forward under the bottom of the seedling boxes C ... arranged on the ground, the seedling box C ... Is pulled off the ground along the upper edge. Then, the removed seedling boxes C are connected to the first seedling box transport device 16.
Is transported backward.

The left and right widths of the seedling box scooping tools 24 and the first seedling box transporting device 16 located on the rear side are in a horizontal state in front of the body (the longitudinal direction of the seedling box C is in relation to the body moving direction). Are positioned inside the left and right end positions of the seedling boxes C arranged side by side in a front-to-rear direction with respect to the conveying direction of the seedling box conveying device 2). I have. Thereby, the seedling box rake tool 24
Is configured to act so as to penetrate and scoop up the bottom of the seedling box C..., And the first seedling box transport device 16 is configured to contact and transport the bottom of the seedling box. Seedling box rake 24 and first seedling box transport device 1
Even if the 6 is displaced to the left and right, the seedling box can be picked up in a precisely stable state, and the aircraft can be made more compact. In addition, the configuration in which the seedling box is picked up and transported in a state where the longitudinal direction is left and right sideways is that the seedling box can be picked up or arranged and transported in a precisely stable state, and the seedling box as described above is provided. Box rake 24
A configuration in which the left and right widths of the first and second seedling box transfer devices 16 are reduced.

When the seedling boxes are displaced to the left and right, they are picked up and transported by the seedling box scooping tools 24, 24 and the first seedling box transport device 16, or the seedling boxes are arranged on the ground. When it is conveyed to the first seedling box conveying device 16 from the rear side of the second seedling box conveying device 17 to the left and right, the rear side of the first seedling box conveying device 16 and the front side of the second seedling box conveying device 17 Seedling box transport guide plate 52.5 provided in the
The right and left positions of the seedling box conveyed from 2 are properly corrected.

Further, the transfer inclination angle of the second seedling box transfer device 17 is set smaller than the transfer inclination angle of the first seedling box transfer device 16, and the seedling box C is placed with the longitudinal direction of the seedling box left and right.
Are transported, that is, the seedling boxes C are transported in a state where the short side direction of the seedling box is directed to the transport direction. Thereby, the seedling box transfer device 2 can be configured to be low, the body can be made compact, and the transfer inclination angle changes when the transfer of the first seedling box transfer device 16 and the second seedling box transfer device 17 is performed. Oscillation of the seedling box that occurs can be suppressed to a small level, and transport of the seedling box in a stable state can be maintained.

Furthermore, the left and right crawler of the traveling device 1
Seedling box rake tool 24
Also, since the left and right outer end positions of the first seedling box transport device 16 located on the rear side are provided on the left and right inner sides, the left and right
If the runners 14 and 14 are moved so as not to contact the adjacent seedling boxes C, the seedling box rake tools 24 and 24 must be moved to the adjacent seedling boxes Cn.
… And does not contact the side clutch 67
When the traveling direction of the traveling device 1 is corrected by 67, the front of the body swings right and left, but since the seedling box scooping tools 24 are narrowly provided on the left and right inner sides, it is difficult to contact the adjacent seedling boxes Cn.

The first seedling box transfer device 16 operates so that the front side moves up and down with the first transfer drive shaft 19 as the center of rotation. Specifically, first, a hydraulic cylinder 25 as an actuator is provided. The rear end of the hydraulic cylinder 25 is pivotally supported by a bracket fixed on the front frame 7 via a horizontal axis, and the front end of the piston of the hydraulic cylinder 25 is rotatably supported on the front frame 7. An arm 27 integral with the pivot shaft 26 is connected via a horizontal shaft. Further, a first interlocking arm 28 attached to the right end of the rotating shaft 26 so as to rotate integrally therewith.
The arm tip is connected to the arm tip of a second interlocking arm 29 rotatably attached to the first transport drive shaft 19 by a rod 30 to form a link. And
A swing arm 29a provided integrally with the second interlocking arm 29 connects the first transport frames 21 and 21 in front of the first transport drive pulleys 20 and 20 to the second connecting shaft 31. Is rotatably connected to the

Therefore, when the piston portion of the hydraulic cylinder 25 is retracted into the cylinder portion, the swing arm 30 moves the first transport drive shaft 19 by the interlocking of the link components.
The arm is pivoted so that the tip of the arm moves upward about the center of rotation, and the first transport frame 21 is integrally moved with the first transport drive shaft 19 as the center of rotation. And the first seedling box transport device 16 is rotated so that the seedling box rake tools 24 move upward. When the piston portion of the hydraulic cylinder 25 projects from the cylinder portion, the swing arm 30 moves downward about the first transport drive shaft 19 by the interlocking of the link components. And the first transport frame 21.
21 rotates about the first transport drive shaft 19 as the center of rotation so that the tip moves downward, and the first seedling box transport device 16 rotates so that the seedling box rake tools 24 move downward.

The range of rotation of the first seedling box transport device 16 (with the first transport drive shaft 19 as the center of rotation) is as follows. -14
It can be moved down to a position lower than the bottom surface position of 14. This allows the tip of the seedling box scooping tool 24 to be inserted under the bottom surface of the seedling box placed on the ground, thereby enabling the scooping action of the seedling box. Further, the seedling box scooping tool 24.2 is changed from the seedling box scooping operation state to the non-operation state.
4 can be moved up to a state where it does not touch the ground, and further moved up until the tops of the seedling box rake tools 24 and 24 face upward and the first seedling box transport device 16 is in a substantially upright posture. Movement is also possible. Upward movement up to this point results in a state in which the body length is short, and space efficiency during storage and transportation is improved. Further, by further rotating the first seedling box transport device 16 so as to cover the second seedling box transport device 17 so as to cover the second seedling box transport device 17, the body can be further compacted,
Space efficiency during storage and transportation is further improved.
Note that the configuration shown in FIGS. 12 and 13 makes the folded state more compact. That is, the first transport frame is divided into a base frame 21'a and 21'a and a front frame 21'b and 21'b, and both of these frames are framed by the second connecting shaft 31. -Folding pivot 2 at the tip
It is rotatably connected by 1'c, and further connected by detachable connecting pins 21'd and 21'd on the front end side of the frame. With this configuration, when the first seedling box transfer device 16 is folded, the first seedling box transfer device 16 is rotated around the first transfer drive shaft 19 so that the tip thereof is located as rearward as possible, and the connection pin 21 ′ is provided. Remove d ・ 21′d. Then, the first seedling box transfer device 16 can be moved by the folding pivot 21'c.
It can be further rotated around and can be folded more compactly.

A detachable loading platform 21'e is attached to the body frame so as to cover the upper side of the first seedling box transporting device 16 in a folded state, and the loading platform 21'e is mounted.
When the seedling box mounting table 77 is raised so that the upper surface of the seedling box mounting table 77 and the upper surface of the seedling box mounting table 77 described below are at the same height, the upper surface of the loading platform 21'e and the upper surface of the seedling box mounting table 77 are made continuous loading units. This machine can be used efficiently as a transport vehicle.

The second seedling box conveying device 17 is rotatable on a second conveying drive roller 32 provided rotatably on the upper side of the intermediate transmission case 6 and on the transmission mission case 8. A wide second transport belt 34 is wound around a freely provided second transport driven roller 33.
The second transport drive roller 32 has pipe-shaped frames 35, 35 having both ends of a rotating shaft 32a that rotates integrally with the roller 32 fixed to the left and right sides of the intermediate transmission case 6. Are supported by roller support frames 36 and 37 fixed to both ends of the roller. Then, the second transport drive shaft 38 is projected from the middle transmission case 6 into the left-side pipe-shaped frame 35, and a drive sprocket 39 is attached to the shaft end so as to rotate integrally therewith. The transmission chain 41 is hung in the roller support frame 36 between the roller 39 and the driven sprocket 40 which is attached to the shaft end of the roller rotation shaft 32a so as to rotate integrally therewith. A roller 32 is provided to be driven and rotated.

The earth removal belt 18 rotates so that the earth removal belt 42 can be switched between forward and reverse in a direction crossing the conveying direction of the seedling box conveyor 2, and the rotating lugs 42a of the earth removal belt 42 are conveyed. The seedling box C is provided so as to come into contact with the bottom surface and to drop the soil. The earth removal belt 42
It is wrapped around earth removal drive pulleys 43, 43 and rollers 44, 44 provided on both left and right sides of the transport mission case 8. The earth drop drive pulleys 43 protrude forward from the transmission cases 46 fixed at both ends of the transmission frames 45 fixed to the left and right sides of the transport transmission case 8. The pulley shafts 47 are attached so as to rotate integrally. The pulley shafts 47
Transmission frame 4 from both left and right sides of transport mission case 8
Bevel gears 49, 49 are attached to the left and right ends of the left and right dropping drive shafts 48, 48 protruding into 5.45 so as to rotate integrally in the transmission cases 46, 46, and pulleys are mounted on the gears. Bevel gears 50, which are assembled so as to rotate integrally with the shafts 47, are provided so as to be meshed and transmitted. Rollers 44, 44 are the transmission frame 4
Roller support members 51, 51 fixed to the lower side of 5.45
It is mounted so that it can roll freely.

Note that seedling box transport guide plates 52 are provided so as to sandwich the transport path from the first seedling box transporting device 16 to the second seedling box transporting device 17 via the soil removal device 18 from the left and right. The front and rear ends of the guide plate are bent obliquely right and left outward, and the conveyance of the seedling boxes C by the seedling box conveying device 2 is guided at predetermined left and right positions. The seedling box transport guide plates 52 are fixedly provided on the transmission frames 45, and the seedling box transport guide plates 52 on the left and right sides thereof are provided.
-52 is provided so that the left-right spacing is slightly wider than the longitudinal width of the seedling box C. Further, the second seedling box transfer device 17 is moved from the rear end position of the seedling box transfer guide plates 52.
Is provided so that the front-back distance to the vicinity of the rear end position has at least the width in the short direction of one seedling box. Therefore, at the time of the seedling box pick-up operation, the worker on the side of the machine picks up the seedling box C transported to the rear end side of the second seedling box transport device 17 by hand and transfers it to the seedling mounting portion 3. In the pick-up operation of the seedling box C, since the seedling box transport guide plates 52 are not extended to the rear end side of the second seedling box transporting device 17, the operator pulls out the seedling box C in the horizontal direction. In this manner, the transfer of the seedling boxes C from the second seedling box transport device 17 to the seedling placement section 3 can be performed quickly and with a reasonable operation. Also, at the time of the seedling box arranging operation, the worker on the side of the machine takes the seedling boxes C on the seedling placing part 3 one by one and puts them on the rear end side on the second seedling box conveying device 17, Also in the operation of placing the seedling box C on the second seedling box transfer device 17, since the seedling box transfer guide plates 52 do not extend to the rear end side of the second seedling box transfer device 17, the worker The seedling boxes C can be placed so as to be inserted from the left and right sides, so that the transfer of the seedling boxes C from the seedling placement section 3 to the second seedling box transport device 17 can be performed quickly and with a reasonable operation. Also, the seedling box transport guide plates 52 are provided from the middle of the first transport device 16, and the front end of the guide plate is in large contact with the seedlings of the seedling boxes Cn. It is provided so as not to be done. Thereby, the adjacent seedling box Cn by the seedling box transport guide plates 52
The damage to the seedlings can be avoided.

The seedling drive pulleys 43 are connected to the seedling box 43 so that the soil dropping action can be uniformly received over the entire bottom surface of the seedling box C to which the soil removal belt 42 of the soil removal device 18 is conveyed. It is provided so as to be located on the left and right outer sides of the transport guide plates 52. Therefore, the seedling box transport guide plates 52
Notches 52a are provided so as to straddle the earth removal belt 42 and the earth removal drive pulleys 43.

The front end of the transport transmission case 8 is
Since it passes through the inside of the earth removal belt 42 and protrudes to the front side of the belt 42, and the first transport drive shaft 19 of the first seedling box transport device 16 protrudes from the front end of the case 8 in the left-right direction. , The driving unit of the first transport drive shaft 19
Since it is not necessary to dispose the fuselage 2 outside, the body width can be reduced and a compact configuration can be realized. Further, the first transport drive pulleys 20 are provided so as to approach such a state that the rear end thereof enters the ground drop belt 42. Further, the second transport driven roller 33 is reduced in diameter. Earth removal belt 42
The soil removal device 18 is provided between the first seedling box transport device 16 and the second seedling box transport device 17 because the
, It is possible to reduce the transfer handover interval between the first seedling box transfer device 16 and the second seedling box transfer device 17. Also,
In the soil removal device 18, the seedling box transport guide plates 52
Drop drive pulley-4 provided to protrude left and right outside
3 ・ 43 is composed of a small-diameter pulley, and rollers 44.4
4 are provided below the pulleys 43 and 43 on the left and right inner sides of the seedling box transport guide plates 52 and 52, respectively.
An earth removal belt 42 is wound around the outside of the roller 43 and the rollers 44. As a result, as described above, a space for projecting the front end of the transport transmission case 8 from the inside of the soil drop belt 42 to the front side can be secured inside the soil drop belt 42, and can be secured during the seedling box pick-up operation or the seedling operation. Seedling box row CCn adjacent to one of the left and right sides of the seedling box row CC during the box arrangement work
. Can be avoided. (If a large-diameter dropping drive pulley is used to secure a space in which the front end of the transport transmission case 8 projects forward from the inside of the dropping belt 42, the adjacent seedling box rows CCn ... On the other hand, there is a problem that the earth drop belt 42 interferes.) Further, the rotation direction of the earth drop belt 42 is adjacent to one of the left and right sides of the seedling box row CC during the seedling box picking operation or the seedling box arranging operation. Forward / reverse switching is provided so that the seedling box row CCn can be rotated to the opposite side. As a result, the soil scraped off by the soil removal belt 42 jumps in the belt rotation direction, but is scraped off by the soil removal belt 42 on the side without the seedling box opposite to the adjacent seedling box row CCn. The soil thus removed is switched so as to jump, and the soil scraped off by the soil removal belt 42 can be prevented from falling onto the adjacent seedling box rows CCn.

In order to switch the rotation direction of the earth removal belt 42 as described above, the earth removal belt rotation switching lever is used.
At L4, the operator makes a judgment and performs a switching operation. The earth removal belt rotation switching lever L4 is provided to have a lever position for rotating the earth removal belt 42 to the right, a lever position for rotating the earth removal belt 42 to the left, and a lever position for stopping the rotation of the earth removal belt 42. ing. Also, such a lever
In addition to the position, the rotation direction of the soil drop belt 42 is automatically switched as described above based on the detection result of the adjacent seedling box detection means S1 for detecting which side of the adjacent seedling box row CCn. Providing a position further improves operability.

The soil removal device 18 has a configuration in which a roll-shaped soil removal brush is rotated in a direction opposite to the transport direction of the seedling box transport device 2 instead of the above configuration. You can also. By the way, when picking up seedling boxes,
The seedling box C is transported to the rear end side of the second seedling box transport device 17,
When the seedling box C is further conveyed further rearward, the stop arm 53, which is rotatable in the front-rear direction, is pushed by the seedling box C near the rear side of the second seedling box conveying device 17. The main clutch 54 is operated to be in the power-off state in conjunction with it, and the operation of the traveling device 1, the first transport device 16, the second seedling box transport device 17, and the soil removal device 18 are performed. It is designed to stop. The stop operation arms 53
An interlocking arm 56, which is integrally fixed to a horizontal shaft 55 rotatably provided on the rear side of the intermediate transmission case 6, is further integrally fixed to the horizontal shaft 55, and a traveling unit transmission case. A main clutch shifter 57 for engaging and disengaging the main clutch 54 projecting to the right side of the gear 4 is connected by a rod 58 and connected to the main clutch 54 so as to be interlocked therewith. Thus, there is no problem even if the worker is late to pick up the seedling box C transported to the rear end side of the second seedling box transporting device 17. That is, if the seedling box C that has been transported is moved forward without being taken up sequentially,
Seedling box C that is picked up from the ground and transported one after another ...
The seedling box transport device 2 is fully loaded, and the seedling boxes C on the ground cannot be picked up even if the body is further advanced. Nevertheless, if the aircraft is further advanced, the seedling boxes C on the ground are turned over or broken. However, even if the seedling box... C is not picked up before reaching the predetermined position of the second seedling box transport device 17 as described above, at least the traveling device 1 stops, and the above-described trouble occurs beforehand. Is prevented. Accordingly, the operator can calm down the second seedling box transport device 1 without worrying about the occurrence of the above-described trouble.
The seedling box C conveyed on 7 can be picked up and the operation can be smoothly continued. In addition, seedling box ... C
Is not picked up before reaching the predetermined position of the second seedling box transport device 17, and even if the stop operation arm 53 is pushed and moved by the seedling box C and the traveling device 1 stops, the state is not changed. By simply picking up the seedling box C, the aircraft starts running to pick up the seedling box again. When the seedling box C that has pushed and moved it backward is removed, the operation arm 53 is in a state where it can be rotated and returned to the front.
The main clutch 54 is returned to the on state by the spring 59 for urging the operation arm 53 to the on state.
Rotates forward and returns.

Therefore, from the above, this seedling box pick-up machine
In the seedling box pick-up operation state, the tip of the seedling box rake tool 24 of the first seedling box transfer device 16 is positioned slightly under the ground, and the first transfer belts 24 and 24 and the second transfer belt 34 are moved. The traveling device 1 is advanced in a state where the upper side is rotated so as to move rearward. Then, the tips of the seedling box scooping tools 24 enter the lower bottom of the seedling box C placed on the ground, and the seedling box C is pulled off from the ground by the seedling box scooping tools 24. Like that. The picked-up seedling boxes C are transported backward by the first transport belts 24 and transported from the ground to the second seedling box transport device 17. Where the seedling boxes C are taken over from the first seedling box transporting device 16 to the second seedling box transporting device 17, the soil attached to the bottom surface of the seedling boxes C ... is scraped off by the soil removal device 18. Seedling box C taken over by second seedling box transport device 17 ...
However, if it is transported further rearward to the rear end side of the second seedling box transport device 17, that is, near the front side of the seedling box mounting portion 3, the worker who moves along with the body on the side of the body,
Pick up the seedling box C by hand. Then, the picked-up seedling box C is placed in the seedling box storage frame H placed on the seedling box mounting portion 3. Here, if it is delayed for the worker to pick up the transported seedling box C, the seedling box C transported backward pushes and moves the stop operation arms 53, 53 backward,
The main clutch 54 is disengaged, and the operation of the traveling device 1, the first transport device 16, the second seedling box transport device 17, and the operation of the soil removal device 18 are stopped. From this state, if the seedling box C which has pushed and moved the stop operation arms 53 and 53 backward is picked up, the stop operation arms 53 and 53 can return to the front position and can be rotated, and the main clutch 54 is in the engaged state. And again,
Traveling device 1, first transport device 16, and second seedling box transport device 1
7. Further, the soil removal device 18 starts operating, and the seedling picking-up operation and running state are set. As described above, in the seedling box picking-up operation, the seedling box picking-up operation is performed while continuously picking up the seedling boxes C arranged in the traveling direction one after another. It is transported to a position near the front side. Then, the transported seedling boxes C are successively picked up by the operator and placed on the seedling box mounting portion 3 (they are put into the seedling box housing frame H).

The seedling box picking-up machine can also perform a seedling box arranging operation. That is, a large number of seedling boxes C are stacked on the seedling box mounting portion 3 (the seedling box housing frame H containing a large number of seedling boxes C sowed and germinated is placed on the seedling box mounting portion 3. ), The seedling box scooping tools 24 of the first seedling box transport device 16 are placed in a state of being grounded or slightly floated on the ground (in this operation, the seedling box scooping tools 24 are removed. ), The first conveyor belts 24 and the second conveyor belt 3
The traveling device 1 is moved backward while the upper side 4 is rotated so that the upper side thereof moves forward. In this state, the seedling boxes C on the seedling box mounting portion 3 are sequentially replaced one by one on the rear end side of the second seedling box transport device 17 by the operator. Then, the loaded seedling boxes C are carried forward, and the seedling boxes C are transferred from the second seedling box conveying device 17 to the first seedling box conveying device 16.
Is transferred to the seedling box C by the soil removal device 18
The soil attached to the bottom surface of the... Is scraped off, and then conveyed toward the front end side of the first seedling box conveying device 16 and sequentially placed on the ground one by one and arranged. As described above, this seedling box picking machine is used as a seedling box arranging machine. In the seedling box arranging operation, the seedling boxes C... As the seedling boxes C are placed on the transporting device 17 and the seedling boxes C placed thereon are transferred from the traveling vehicle body 1 to the ground, the seedling boxes C are placed one after the other in the body traveling direction. It is arranged continuously.

The transport speed of the first seedling box transport device 16 is set to be slightly higher than the traveling speed of the traveling device 1. Thereby, the transfer of the seedling boxes C by the first seedling box transfer device 16 does not become a resistance to the forward running of the traveling vehicle body 1 during the seedling box pick-up operation. Also, in the seedling box arranging operation, the seedling box C carried out to the ground from the tip of the first seedling box transport device 16 is pressed against the seedling box C carried out before and placed on the ground. Are placed on the ground with little gap in a state where they are in contact with each other. Further, the transfer speed of the second seedling box transfer device 17 is provided to be faster than the transfer speed of the first seedling box transfer device 16. Therefore, at the time of the seedling box picking-up operation, when the worker is transported to the rear end side of the second seedling box transfer device 17, the worker can take the seedling boxes C... The operation can be performed continuously because the seedling box pick-up operation can be performed continuously.
In addition, during the operation of arranging the seedling boxes, the worker can easily transfer the seedling boxes C from the seedling box mounting portion 3 to the second seedling box transport device 17, and the seedling box arranging operation can be continuously performed. The workability can be improved.

The transmission mechanism of the seedling box picking machine will be described below. The output shaft of the engine E has an engine output pulley.
A pulley 60 is provided so as to rotate integrally.
A transmission transmission belt 62 is wound around a transmission input pulley 61 attached to the transmission input shaft S1 protruding from the left side of the traveling transmission case 4 so as to rotate integrally therewith. In addition, the pulley-60
A hydraulic pump transmission belt 65 is wound around a pump drive pulley 64 provided so as to rotate integrally with a pump drive shaft of the hydraulic pump 63. A main clutch 54 is provided in the transmission case 4 on the transmission input shaft S1 driven and rotated by the engine E.
The on / off operation of the main clutch 54 is performed by the stop operation arms 53, 53 interlocked with the main clutch shifter 57.
And a main clutch lever L1 provided in a lever box LB (R) provided near the grip portion of the handle 9. The disengagement operation of the main clutch 54 by the stop operation arm 53 is performed by the main clutch lever L.
1 and the stop operation arm 53
The main clutch lever L1 is provided so that the on / off operation of the main clutch 54 can be performed when the main clutch 53 is in the main clutch engagement operation state. The spring 59 is a spring that urges the main clutch 54 into an engaged state.
Next, the power is transmitted from the gear G1 that rotates integrally with the main clutch 54 in the engaged state to the transmission gear G2 that is assembled to rotate integrally with the transmission shaft S2. A forward / reverse switching gear G3 is assembled on the transmission shaft S2 so as to rotate integrally and slide freely in the axial direction.
The forward / reverse switching gear G3 is slid in the axial direction by a forward / reverse switching lever L2 interlockingly connected to the shift shifter 66, and a forward gear G4 integrated with the traveling shaft S3 and a reverse gear integrated with the traveling shaft S3. The reverse shaft S4 meshing with the gear G5 is alternatively meshed with a reverse counter gear G6. Left and right crawler drive shafts S5 and S5 are rotatably engaged with the left and right ends of the traveling shaft S3 on the same axis, and are driven by the left and right crawler driving shafts S3 via side clutches 67 and 67. The shaft S5, S5 enters and is operably transmitted. The outer ends of the left and right crawler drive shafts S5 protrude from the left and right sides of the traveling transmission case 4, and the crawler drive wheels 11, 11 are attached to the protruding portions so as to rotate integrally. ing. The transmission on / off operation of the side clutches 67, 67 is performed by the side clutch levers L3 (R), L3 which are interlockingly connected to the side clutch shifters 68, 68.
(L) is operated. Side clutch lever L3 (R)
L3 (L) is provided on the left and right grips of the handle 9.

The power in the traveling mission case 4 is transmitted to the seedling box transport device 2 and the soil removal device 18. That is, a seedling box transport clutch 69 is assembled on the traveling shaft S3, and the clutch 69 is rotated integrally with the sprocket G7 in a transmission-engaged state. The power is transmitted to a sprocket G8 integrated with the second transport drive shaft 38. Then, from the drive sprocket 39 integrated with the shaft end of the second transfer drive shaft 38, via the transmission chain 41, the drive sprocket 39 is attached to the shaft end of the roller rotation shaft 32 a of the second transfer drive roller 32. The power is transmitted to the integral driven sprocket 40.

A transmission sprocket G9 is provided on the second transport drive shaft 38. The transmission sprocket G9 is transmitted from the sprocket G9 via the transmission chain C2.
To the sprocket G10 integral with the earth drop shaft S6. Then, on both left and right ends of the earth removal shaft S6, earth removal belt rotation switching clutches 70, 70 are provided, and when the clutch is engaged, it is transmitted to the left and right earth removal drive shafts 48, 48.
Bevel gears 4 on both left and right ends of the left and right soil drop drive shafts 48
9.49 are integrally assembled, and the pulley shaft 47.4
7, the bevel gears 50, 50 integrally engaged with each other from the left and right outer front sides, and the earth drop drive pulley 43
43 is driven and rotated. The earth removal belt rotation switching clutches 70, 70 are switched such that one of the left and right sides is engaged, or both the left and right sides are in the off state, and the rotation of the earth removal belt 42 of the earth removal device 18 is rotated rightward or rightward. To the left,
Further, the state is switched to the rotation stop state. This switching operation is performed by a ground belt rotation switching lever L4 interlocked with the ground belt rotation switching clutch shifters 71, 71. When the lever L4 is turned in the left-right direction, a shifter operation bar 73 connected to the lever by an interlocking member 72 such as a rod interlocks in the left-right direction.
The left and right clutch shifters 71, 71 connected by the long hole connecting portions 73a, 73a at both the left and right end portions of the 73 cooperate in the same direction on the left and right, so that one of the left and right sides is in the engaged state, or both the left and right are in the off state. The earth drop belt rotation switching clutches 70 are switched such that In order to automatically switch the rotation direction of the soil drop belt 42, the adjacent seedling box detecting means S1 (for example, when there is an adjacent seedling box row CCn on the left and right outer sides of the seedling box rake tools 24, 24), Row C
The sensor rod S1a on one of the left and right sides is provided in Cn... So that the adjacent seedling box detection switch S1b on that side is turned ON. ) Is provided, the left and right earth removal belt rotation switching clutch shifters 71
Are connected independently to each other, and based on the detection result of the adjacent seedling box detection means S1 (ON signal of the left and right adjacent seedling box detection switch S1b), the left and right solenoids S1c are connected to each other. When the solenoid pin is energized, the solenoid pin retracts, and the clutch shifter 71 connected to the solenoid pin interlocks to switch the one of the left and right earth drop belt rotation switching clutches 70 into the engaged state. At this time, the switching lever L4 has been operated to the automatic switching lever position, the shifter operation bar 73 is in the left and right neutral state, and the long hole connecting portions 7 on both the left and right ends of the operation bar 73.
The clutch shifters 71 are operated in the long holes 3a 73a. Also, the solenoids S1c and S1
c is in a non-excited state (adjacent seedling box detection switch S1b, S1b
Is OFF), the solenoid pin protrudes due to the spring in the solenoid, and the clutch shifter 71.
1 is operated to disengage the clutch.

A transmission sprocket G11 is provided on the earth dropping shaft S6. From the sprocket G11, the transmission transmission case 8 is connected via a transmission chain C3.
Sprocket G integrated with first transport drive shaft 19 on the inner front end side
The first transport drive pulleys 20 are provided for transmission to the shaft 12 and rotate integrally therewith.
Incidentally, the seedling box transfer clutch 69 is operated to engage and disengage the clutch by a seedling box transfer soil dropping clutch lever L5 interlocked with the seedling box transfer clutch shifter 74.

Hereinafter, the hydraulic mechanism of the seedling box pick-up machine will be described. The pressure oil sent by the hydraulic pump 63 driven by the engine E is sent to the hydraulic cylinder 25 that moves the front part of the first seedling box transfer device 16 up and down through the first switching valve 75,
Then, the seedling box placing table 77 of the seedling box placing part 3 is further sent to the second hydraulic cylinder -78 for moving the seedling box placing table 77 up and down with respect to the traveling device 1 via the second switching valve 76, so as to return to the oil tank T. Is provided. The hydraulic cylinder 25 and the second hydraulic cylinder -78 are both double-acting. The first switching valve 75 and the second switching valve 76 are provided so that the pistons of the hydraulic cylinder 25 and the second hydraulic cylinder -78 can be operated and switched in the protruding direction or the retracting direction, respectively. The first switching valve 75 is provided so as to be switchable by a first seedling box transfer device up / down operation lever L6, and the second switching valve 76 is provided so as to be switchable by a seedling box mounting table elevating operation lever L7. Have been.

The first switching valve 75 has a seedling box scooping tool 24.2 attached to the tip of the first seedling box transfer device 16.
4 may be provided so as to be interlockedly connected to a ground sensor S2 for controlling the position so that the tip end position is located below the ground by a predetermined depth. In this case, the ground sensor S2
Is mounted rotatably on a sensor-rotating shaft S2a secured to connect the left and right seedling box scooping tools 24, 24, and a spring is provided in a direction in which the grounding portion on the rear bottom surface of the grounding sensor S2 rotates downward. Even if the position of the ground fluctuates up and down with respect to the position of the seedling box scooping tool 24, the grounding sensor S2 rotates so as to maintain the grounding state. I have. Then, the ground sensor S
2 is rotated from a predetermined posture by a predetermined angle or more, the first switching valve 75 is switched in conjunction therewith so that the interlocking means S
At 2b, the grounding sensor S2 and the first switching valve 75 are operably connected. When the tip position of the seedling box scooping tools 24 is higher than a predetermined depth range with respect to the ground, the rear grounding portion of the grounding sensor S2 moves down around the rotation axis S2a and moves in conjunction with the first grounding portion. When the switching valve 75 is switched and the tip of the seedling box scooping tool 24 moves downward and moves down to within a predetermined depth range, the ground sensor S2 rotates together with it to return to a predetermined posture, In conjunction with this, the first switching valve 75 returns to neutral, the downward movement stops, and the tips of the seedling box scooping tools 24 return to the predetermined depth range. Conversely, seedling box scooping tool 24
When the position of the front end of the ground contact sensor 24 is lower than the predetermined depth range with respect to the ground, the rear ground contact portion of the ground contact sensor S2 is rotated by the rotation axis S
2a, the first switching valve 75 is switched in conjunction therewith, and the tip of the seedling box scooping tool 24, 24 is moved up. When it moves up to a predetermined depth range, it is moved together with the ground sensor.
S2 rotates to return to the predetermined posture, and in conjunction with this, the first switching valve 75 returns to neutral, the upward movement stops, and the tips of the seedling box scooping tools 24 return to within the predetermined depth range. By the way, at this time, the operation lever L6 is operated to the automatic vertical lever position, and the long hole connecting portion 79a of the connecting member 79 connecting the lever L6 and the switching operation member of the first switching valve 75.
, The switching operation member of the first switching valve 75 is operated based on the detection result of the ground sensor S2.
Reference numeral 80 in the figure denotes a relief valve.

As described above, the seedling box mounting table 77 of the seedling box mounting portion 3 is configured to move up and down with respect to the traveling device 1 by the operation of the second hydraulic cylinder -78.
Specifically, the seedling box mounting base 81 and the seedling box mounting base 77 fixed on the traveling mission case 4 and the rear frame 5 are provided.
And a lifting link 82 in the form of a pantograph mechanism is provided between them, and a second hydraulic cylinder -78 is attached so as to move the lifting link 82 up and down. Therefore, at the time of the seedling box pick-up operation, when the seedling boxes C picked up from the ground are full in the seedling box storage frame H placed on the seedling box mounting table 77, the tip of the first seedling box transport device 16 Is moved up, and approached to the left or right side or the rear side of the carrier CTa of the seedling box transporter (truck) CT waiting on the outside of the seedling raising house, and the machine is stopped sideways.
Then, the seedling box mounting table raising / lowering operation lever L7 is operated to raise the seedling box mounting table 77, and when the seedling box mounting table 77 is substantially at the same height as the loading platform CTa, the raising / lowering is stopped. In that state,
The seedling box housing frame H on the seedling box mounting table 77 is extruded in the left and right direction, and is loaded on the loading platform CTa. As described above, when the seedling box is picked up and the picked-up seedling box is full, the body is moved as it is, the aircraft is laid on the carrier CTa of the transport vehicle CT, and the carrier is raised to the height of the carrier CTa. H can be loaded on the transporter CT simply by moving it laterally.
Work efficiency is good. When the worker with a standard height is in a steering state with the handle 9 placed on the seedling box mounting frame 77 on the seedling box mounting table 77, the position of the eye of the worker is placed. The height of the seedling box housing frame H is set so as to be located above the seedling box housing frame H.

As shown in FIGS. 14 and 15, when the lift-up device 90 is provided, the seedling boxes transported to the rear end of the second seedling-box transport device 17 are moved upward by the lift-up device 90. Since the worker is pulled up, the worker on the side of the machine can pick up the seedling box and load it into the seedling box housing frame H without bending down too much, so that the work can be performed easily. The lift-up device 90 has the following configuration. First, lift-up links 92, 92 having a parallel link configuration are connected to lift-up frames 91, 91 fixed to the left and right front ends of the rear frame 5.
The free ends of the lift-up links 92 are rotatably mounted on the left and right sides of a U-shaped seedling box pull-up frame 93. A rotating gear 94 is integrally attached to a rotating shaft of a lift-up link 92 attached to one of the lift-up frames 91, and a driving gear of an electric motor 95 is attached to the rotating gear 94. 9
6 are provided so as to mesh with each other. In this case, the second transport belt 34 of the second seedling box transport device 17 is provided to be narrower than the width of the seedling box in the longitudinal direction. With the above configuration, the lift-up device 90 operates as follows. First, the seedling box lifting frame 93 is located slightly lower than the upper surface of the second seedling box transport device 17 in a state surrounding the rear end portion of the second seedling box transport device 17. At this position, the seedling box is transported to the seedling box lifting frame 93 by the second seedling box transport device 17, and the transported seedling box is pushed backward by the stop arms 53, 53 to stop the machine. , The lift-up link 92 is rotated from the drive gear 96 via the rotation gear 94, and the seedling box lifting frame 93 is raised to a predetermined height by receiving the left and right ends of the bottom surface of the seedling box. . When the seedling box on the seedling box pulling frame 93 is picked up by the operator, the electric motor 95 operates again to rotate the lift-up links 92, and descend to the above-mentioned initial position. At this point, the stop arms 53 are returned and rotated, and the machine is restarted.

Therefore, the seedling box pick-up machine of the present invention is provided with a traveling device, a seedling box transfer device for picking up the seedling box from the ground and transferring it to the machine body, and a seedling box mounting portion on which the seedling box can be placed. A seedling box pick-up machine, comprising: a first seedling box transfer device that picks up and transfers a seedling box by directing the seedling box transfer device from above the ground to the body, and transfers the seedling box transfer device over the body by taking over from the first seedling box transfer device. A second seedling box transport device to be configured, and the first seedling box transport device is provided so as to protrude forward from the traveling device,
The seedling box pick-up machine is characterized in that the tip of the first seedling box conveying device is provided so as to be movable from a state in which it is in contact with the ground or the ground to an upward state.

Thus, the seedling box pick-up machine advances the tip of the first seedling box transfer device in a state of being in contact with the ground or the ground when picking up the seedling box. Then, the seedling boxes arranged side by side on the ground in front of the fuselage are picked up and transported from the tip of the first seedling box transport device, and are subsequently transported over the fuselage by the second seedling box transport device. Then, the transported seedling box is loaded on the seedling box mounting portion. In addition, when storing in a warehouse or transporting by truck or the like, when the first seedling box transport device is rotated until the tip thereof faces upward,
The aircraft length becomes shorter and it can be made more compact.

Therefore, the operation of picking up the seedling boxes for picking up the seedling boxes arranged on the ground in the seedling raising house can be mechanized, and the labor and efficiency of the entire rice planting operation can be reduced. In addition, it is possible to achieve a rational configuration suitable for the operation form of the seedling box picking-up operation, and to save space during storage and transportation.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling box picking machine.

FIG. 2 is a plan view of a seedling box picking machine.

FIG. 3 is a sectional side view of the front side of the seedling box picking machine.

FIG. 4 is a plan view of the front side of the seedling box picking machine.

FIG. 5 is a front view of a front part of the seedling box picking machine.

FIG. 6 is a transmission mechanism diagram of the seedling box picking machine.

FIG. 7 is a hydraulic circuit diagram of the seedling box picking machine.

FIG. 8 is a side view showing the positional relationship between the seedling boxes in which the seedling boxes are arranged and the crawler traces of the seedling box pick-up machine.

9A is a side view and FIG. 9B is a plan view showing a seedling box picking operation state of the seedling box picking machine.

10A and 10B are a side view and a plan view showing a seedling box arranging operation state of the seedling box picking-up machine.

11 (a) is a side view and FIG. 11 (b) is a plan view showing a state where a seedling box housing frame filled with the seedling box picking-up operation of the seedling box picking-up machine is loaded on a transport vehicle.

FIG. 12 is a sectional side view of the front side of a seedling box pick-up machine having another configuration.

FIG. 13 is a plan view of the front side of the seedling box pick-up machine of FIG.

FIG. 14 is a sectional side view of the front side of a seedling box pick-up machine having a configuration provided with a lift-up device.

FIG. 15 is a plan view of the front side of the seedling box picking machine of FIG. 12;

[Explanation of symbols]

 1: Traveling device 2: Seedling box transfer device 3: Seedling box placement section 16: First seedling box transfer device 17: Second seedling box transfer device

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Niiyama 1st Yonekura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Engineering Department, Inc. (72) Inventor Hitoshi Yamazaki Ehime Prefecture, Iyo-gun, Tobe-cho Hachikura, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Hideyuki Kusamoto No. 1 Yatsukura, Tobe-cho, Iyo-gun, Ehime Pref. Inspector, Iseki Agricultural Machinery Co., Ltd. Tadayoshi Ono (56) References JP-A-61-68911 (JP, A) JP-A-64-14409 (JP, A) Japanese Utility Model 4-106928 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/00 A01G 9/00

Claims (1)

(57) [Claims] 1. A seedling box pick-up machine provided with a traveling device 1 , a seedling box transfer device 2 for picking up a seedling box from the ground and transferring it to the machine body, and a seedling box mounting portion 3 on which the seedling box can be placed. In addition, the seedling box transport device 2 is provided so as to protrude forward from the traveling device 1 , and the tip of the seedling box transport device 2 projecting forward from the traveling device 1 is provided on the front side of the traveling device 1.
Fold from the ground or close to the ground with the rotation center
A seedling box picking machine characterized in that it is rotatable to a folded state.