JP2020120599A - Seedling transplanter - Google Patents

Abstract

To provide a seedling transplanter capable of suppressing bias on a longitudinal balance of a machine body even when a plurality of containers storing water to be supplied when seedlings are transplanted to a field, are mounted and planting of seedlings is performed, and suppressing variation of planting depth of seedlings due to longitudinal inclination of the machine body due to bias of the longitudinal balance.SOLUTION: A seedling transplanter comprises: a transmission case 15 for storing means for transmitting drive force of a drive unit to a travel unit 14 from an input shaft 16 provided on a vehicle body 10; a seedling transplanting device 30; a mounting member for mounting thereon, containers 95 for storing water therein; and a watering device 60 for supplying water in the containers 95 to a field on which seedlings are planted. The mounting member includes a front mount part 51 for mounting the container on a front position of the input shaft 16 of the transmission case and a rear mount part 52 for mounting the container on a rear position of the input shaft 16. The watering device 60 uses water in a container 95F provided on a front side and mounted on the front mount part 51 and water in a container 95R provided on a rear side and mounted on the rear mount part 52 for supplying water.SELECTED DRAWING: Figure 4

Description

The present invention relates to a seedling transplanter for transplanting seedlings such as vegetables into a field.

Conventionally, as a transplanter for transplanting a transplant such as a seedling into a field, for example, those described in the following patent documents are known.

Patent Document 1 describes a seedling transplanter equipped with an irrigation device that supplies water to a planting device for planting seedlings such as vegetables in a field.
Patent Document 1 also describes that the irrigation device sucks up the water in the water tank with a plunger pump through a hose and then supplies the water to the planting device through a hose for water supply.

Patent Document 2 describes a transplanter including a water tank for storing water to be supplied to the soil around a seedling as a transplanted plant and a water tank stay for mounting the water tank.
Further, in Patent Document 2, the water tank stay is provided inside the left and right outer side surfaces of the implant supply device with reference to the left-right direction of the vehicle body, and the rear portion of the water tank mounted on the water tank stay. Is behind the rotation axis of the rear wheels with respect to the front-rear direction of the vehicle body, the water tank stay may be provided on the left and right sides of the vehicle body, and part of the water tank stay is the transmission of the rear wheels. It is also described that it can be attached to a case.

JP 2012-217368 A JP, 2017-175998, A

However, in the conventional transplanter, a member such as a water tank stay on which a water tank is placed is arranged at a position closer to the rear wheel than the front wheel, as illustrated in Patent Document 2.
Therefore, in such a transplanter, when a water tank storing water is placed on a member such as the water tank stay, the front-rear balance of the machine body is biased to the rear side, which causes the front of the machine body to float up. The front-back inclination of the machine body may occur and the distance between the seedling planting device and the ridge of the field may become short, and the planting depth of the seedling may become too deep.
In addition, as the water in the water tank is consumed and the remaining amount decreases, the degree to which the front and rear balance of the aircraft shifts toward the rear side fluctuates, which also causes the aircraft to tilt forward and backward and plant seedlings. Depth may vary.

Incidentally, in the conventional transplanter as well, it is possible to use, for example, two water tanks mounted on the front and rear and left and right positions of the machine body.
However, even if the transplanter has a plurality of water tanks placed in such a position, if a part of the plurality of water tanks is used up and the remaining water tanks are used in order, , The water remaining in the water tank that consumes water in advance changes over time, and the water tank that is emptied first and the unconsumed water tank have a positional relationship that disrupts the front-rear balance of the aircraft. As a result, the front-rear or left-right balance of the machine body changes. Therefore, also in this case, the front and rear inclination and the left and right inclination of the machine body occur, and the planting depth of the seedlings varies.

This invention, even when carrying out the planting work of the seedlings by placing a plurality of containers that store water to be supplied when transplanting the seedlings to the field, bias in the front-rear balance of the machine is unlikely to occur, An object of the present invention is to provide a seedling transplanting machine that can suppress the variation in the planting depth of seedlings caused by the front-back tilting of the machine body due to one-sided displacement.

The above problems of the present invention are solved by the following means.
The invention according to claim 1 is
A vehicle body (10) provided with a drive device (11) and a traveling device (13, 14) capable of traveling in a field (100);
A transmission case (15) accommodating means (17) for transmitting the driving force of the drive device (11) from the input shaft (16) provided on the vehicle body (10) to the traveling device;
A planting device (30) for planting seedlings in the field,
A mounting member (50) for mounting a container (95) storing water,
An irrigation device (60) for supplying water in a container (95) placed on the placing member (50) to a field where seedlings are planted;
In a seedling transplanter (1) equipped with
The mounting member (50) includes a front mounting portion (51) for mounting the container (95) at a position in front of the input shaft (16) of the transmission case (15) and the transmission case (15). A rear mounting part (52) for mounting the container (95) at a position rearward of the input shaft (16),
The irrigation system (60) includes a front container (95F) mounted on the front mounting part (51) and a rear container (95R) mounted on the rear mounting part (52). The seedling transplanter is characterized by being supplied using water.

The invention according to claim 2 provides the seedling transplanter according to claim 1,
The irrigation device (60) includes a pump (61) for sucking and delivering water, a front hose (62) for taking out water from the front container (95F), and a rear hose for taking out water from the rear container (95R). (63), a first connecting member (64) for connecting the front hose (62) and the rear hose (63) so as to merge, and between the first connecting member (64) and the pump (61). It is composed of a water suction hose (65) to be connected and a drain hose (67) to connect between the pump (61) and the watering nozzle (66),
The first connecting member (64) is a seedling transplanter arranged above the upper ends (95a) of the front container (95F) and the rear container (95R).

The invention according to claim 3 provides the seedling transplanter according to claim 2,
The said 1st connection member (64) is a seedling transplanter arrange|positioned by changing to the position lower than the lower end part of the said front container (95F) and the said rear container (95R).

The invention according to claim 4 is the seedling transplanter according to claim 2 or 3,
The irrigation device (70) is connected to the irrigation device (60), a three-way valve (71) interposed in the middle of the front hose (62) or the rear hose (63), and the first connecting member (64). The first relay hose (72), the second relay hose (73) connected to the three-way valve (71), the first relay hose (72) and the second relay hose (73). A second connecting member (74) for connecting and a water absorption hose (65) for connecting between the second connecting member (74) and the pump (61) are additionally provided,
The second connecting member (74) is arranged at a position lower than the lower end portions of the front container (95F) and the rear container (95R),
The three-way valve (71) is arranged at a position lower than the upper end (95a) of the front container (95F) or the rear container (95R) on the side to be connected, and the planting device ( 30) is switched to a flow path (r1) for flowing water to the first connecting member (64) before the start of the planting operation, and a flow path for flowing water to the second connecting member (74) at the start of the planting operation. It is a seedling transplanter that can be switched to (r2).

The invention according to claim 5 provides the seedling transplanter according to any one of claims 1 to 4,
The mounting member (50) includes left and right front mounting portions (51A, 51B) in which the front mounting portion (51) is arranged in a left-right direction intersecting a front-back direction of the vehicle body (10), and And a left and right rear mounting portions (52A, 52B) in which the rear mounting portion (52) is arranged in the left-right direction,
Start-up in which the left and right front mounting portions (51A, 51B) and the rear mounting portions (52A, 52B) are provided with upper end bending portions (53d) that are obliquely bent outward at the outer end portions in the left-right direction. This is a seedling transplanter in which the part (53b) is arranged.

The invention according to claim 6 provides the seedling transplanter according to any one of claims 1 to 5,
The mounting member (50) includes a support member (56) attached to the transmission case (15) or a part of the vehicle body (10), and a front and rear direction of the vehicle body (10) on the support member (56). A movable member (57) mounted so as to rotate outward with the outer end portion in the left-right direction intersecting as a fulcrum, and a biasing member (58) for biasing the movable member (57) to rotate outward. ) And a restricting member (59) for restricting rotation of the movable member (57) so as to stop at a predetermined work position when the movable member (57) rotates inwardly opposite to the outside. It is a seedling transplanter configured.

According to the invention according to claim 1, even when a plurality of containers storing water to be supplied when transplanting seedlings to the field are placed and planting work of the seedlings is performed, the container storing water is the input of the transmission case. As it is placed at the front and rear positions with the axis sandwiched, the water in the containers placed before and after that is used, so at least the front-rear balance of the aircraft is less likely to be biased. It is possible to prevent the planting depth of the seedling from fluctuating due to the front-back inclination of the machine body.

According to the invention of claim 2, the water can be supplied by using the water between the containers placed at the front and rear positions with the input shaft of the transmission case sandwiched by the irrigation device having a relatively simple structure. You can Moreover, depending on the position of the arrangement of the first connecting member, when air is present in the front hose and the rear hose, or when a large amount of water remains in one container, the hose connected to the container with a large amount of water remains. Since the negative pressure is reduced, the water can be preferentially taken out from the container with the larger amount of water and used, and it becomes difficult for the front and rear balance of the machine body to be biased.

According to the invention of claim 3, the water is supplied from the containers placed at the front and rear positions of the transmission case with the input shaft interposed therebetween by using the irrigation device having a relatively simple structure. You can Moreover, even if one of the front container and the rear container is emptied first depending on the position of the arrangement of the first connecting member, the hose connected to the container on the side where water remains becomes positive pressure. Therefore, it is possible to avoid that the amount of water to be supplied is immediately reduced because the water is taken out from the container in which the water remains.

According to the invention of claim 4, before the planting work of the seedlings by the planting device is started, at least the hose for taking out the water in the container is primed, so that the irrigation according to the start timing of the planting work is delayed or insufficient. Can be started without the occurrence of. Moreover, depending on the position of the arrangement of the second connecting member, even if one of the front container and the rear container is emptied first, the water will be taken out from the container on which water remains, and It is possible to avoid that the amount of is reduced immediately.

According to the fifth aspect of the invention, since the left and right front placing portions and the rear placing portion of the placing member are provided with the rising portions provided with the upper end bent portions at the outer end portions thereof, The lifting height of the container required when performing the loading and unloading of the container is reduced, and when performing the loading and unloading of the container, the container can be slid to the upper bending portion and moved, It is possible to reduce labor and improve workability.

According to the sixth aspect of the invention, the movable member of the mounting member is rotated to the outside so that the height for raising the container required when the container is loaded and unloaded on the mounting member. This lowers the load and facilitates loading and unloading work, reducing the labor of the operator. Further, even when the container in which a large amount of water is left is unloaded from the mounting member, the movable member on which the container is mounted is urged by the urging member to be easily rotated outward. Also, the labor of the worker is further reduced.

It is a left side view showing a seedling transplanter concerning a 1st embodiment. It is a top view which shows the seedling transplanter of FIG. FIG. 2 is a rear view showing the seedling transplanter of FIG. 1 with a part thereof omitted. It is a side surface schematic diagram which shows the mounting member and the watering apparatus in the seedling transplanter of FIG. FIG. 5 is a schematic top view showing the mounting member and the watering device of FIG. 4. It is a front view which shows a part of structure of the mounting member of FIG. (A) is a schematic front view showing the whole and a part of the rotary mounting member, and (B) is a schematic front view showing the state when the rotary mounting member is rotated outward. .. It is a side surface schematic diagram showing a part (mainly irrigation device) of a seedling transplanter concerning a 2nd embodiment. It is a schematic diagram which shows one operation state of the watering apparatus of FIG. It is a schematic diagram which shows the other operating state of the watering apparatus of FIG. It is a side view which shows a part (mainly irrigation device) of the seedling transplanter which concerns on 3rd Embodiment. It is a front view which shows the structural example of the rear wheel and mounting member in a seedling transplanter. (A) is a schematic diagram showing an example of a seedling taking-out nail, and (B) is a schematic diagram showing another example of a seedling taking-out nail. (A) is a schematic diagram showing a state where the movable type seedling taking-out nail is opened, and (B) is a schematic diagram showing a state when the seedling taking-out nail of (A) is closed.

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

[First Embodiment]
1 to 3 show the seedling transplanter 1 according to the first embodiment of the present invention in a state when viewed from three directions.

The seedling transplanter 1 is a transplanter for transferring seedlings such as vegetables to the field 100 and planting them.
First, the seedling transplanter 1 has an engine 11, a transmission 12, and the like, which are drive devices, mounted on the front portion of a vehicle body 10, and has front wheels 13 and rear wheels that are part of a traveling device that can travel in the field 100 before and after the vehicle body 10. Wheels 14 are provided in a left-right paired relationship.
Further, the seedling transplanting machine 1 is driven by the front wheels 13 being driven to rotate, while the rotational power of the engine 11 is transmitted to the rear wheels 14 via the transmission 12 and the transmission case 15 to be driven. ing. Reference numeral 10a in FIG. 1 is an upper cover also called a hood that covers the engine 11, the transmission 12, and the like.

Further, the seedling transplanting machine 1 is provided with a steering handle 90 which projects rearward from the vehicle body 10 and extends left and right. As a result, the seedling transplanter 1 is used by an operator walking the rear of the machine body to grasp the steering handle 90 and perform a steering operation of the machine body. An operation unit 91 configured by arranging various kinds of operation levers, switches, components such as a display unit is provided at a position sandwiched by the left and right steering handles 90.

Further, the seedling transplanting machine 1 is provided with a seedling supplying device 20, a seedling planting device 30 and the like behind the vehicle body 10. As a result, the seedling transplanter 1 plants the seedlings in the ridges 102 by the seedling supply device 20, the seedling planting device 30 and the like while advancing while straddling the ridges 102 of the field 100 by the left and right front wheels 13 and the left and right rear wheels 14. It is like this.

The transmission case 15 has a drive output shaft extending from the transmission 12 so as to project in the left-right direction of the vehicle body 10 as an input shaft 16, and a gear for transmitting rotational power input from the input shaft 16 to an axle 14a of the rear wheel 14. A transmission means 17, such as a sprocket and a drive chain, is housed inside. The input shaft 16 is housed in a cylindrical support cover and is firmly provided on the vehicle body 10.
The transmission case 15 is configured to rotate in the vertical direction with the input shaft 16 as a fulcrum, and thereby supports the rear wheel 14 so as to be vertically movable with respect to the vehicle body 10.
The transmission case 15 also serves as a support member for supporting the rear wheel 14, and thus is configured as a robust case made of a material such as metal.

Further, the seedling transplanting machine 1 is provided between the transmission 12 of the vehicle body 10 and the seedling planting device 30 with an elevating cylinder 18 for elevating and lowering the body by vertically moving the rear wheel 14 via the transmission case 15. There is. In this seedling transplanter 1, the transmission case 15 is rotated so as to move up and down with the input shaft 16 as a fulcrum by operating the elevating cylinder 18 by expanding and contracting, so that the left and right rear wheels 14 move in the same direction. The same amount is raised and lowered with respect to the vehicle body 10. As a result, the vehicle height of the seedling transplanter 1 is adjusted.
Further, the seedling transplanting machine 1 is provided with a sensor plate 19 which comes into contact with the ridges 102 and detects the height of the ridges 102. In this seedling transplanter 1, the operation of the lifting cylinder 18 is controlled according to the detection result of the sensor plate 19 to automatically keep the vehicle body 10 in a substantially horizontal posture with respect to the surface of the ridge 102. This also keeps the planting depth of seedlings constant.

The seedling supply device 20 is a device that supplies seedlings to be transplanted to the seedling planting device 30. As shown in FIGS. 1 to 3, the seedling feeding device 20 is capable of orbiting in a state in which it extends in a lateral direction of the vehicle body 10 on a support frame 29 provided so as to stand up from the rear side of the vehicle body 10 to the upper side. An endless chain 21 for transporting the placed seedling storage cups is provided.
The endless chain 21 is composed of tubular cup holders 22 for mounting a plurality of seedling-accommodating cups 23, which are connected in a row, and a part of the endless chain 21 passes above the seedling planting device 30 to move around. Is arranged. The seedling storage cups 23 are a plurality of cups having a structure with an open bottom for temporarily storing seedlings.
Further, the seedling supply device 20 is provided with, for example, a container holding mechanism 26 for holding a seedling container 25 in which seedlings to be put into the seedling storage cup 23 are stored in the vicinity of the front of the endless chain 21.

In this seedling supply device 20, seedlings in the seedling container 25 are successively loaded by an operator or a dedicated worker so as to be transferred to an empty seedling storage cup 23 that is revolved by an endless chain 21. On the other hand, in the seedling supply device 20, when the seedling storage cup 23 conveyed by the endless chain 21 passes over the position above the seedling planting device 30, the bottom surface of the cup holding portion 22 of the seedling storage cup 23 that passes through is opened. Will be put in a closed state.
Thereby, the seedling supply device 20 is adapted to drop the seedlings stored in the plurality of seedling storage cups 23 into the seedling planting device 30 and supply them.

As shown in FIGS. 1 and 3, the seedling planting device 30 is supported so as to move up and down with respect to a support frame 39 provided so as to exist in the space below the seedling supply device 20 from the rear of the vehicle body 10. The seedling receiving mechanism 31 and the seedling planting tool 35 are provided. The seedling planting device 30 is configured as, for example, a two-row planting device.

The seedling receiving mechanism 31 is provided with a pair of left and right hoppers 32A and 32B that receive the seedlings supplied from the seedling supply device 20. The pair of left and right hoppers 32A, 32B are arranged such that the upper end openings thereof face the two seedling storage cups 23 in the seedling feeding device 20.

In the seedling receiving mechanism 31, the pair of left and right hoppers 32A, 32B are moved upward so as to approach the seedling feeding device 20 in accordance with the seedling planting time. The hoppers 32A and 32B that have moved upward receive the seedlings that are dropped and supplied from the two seedling storage cups 23, respectively.
At this time, the seedlings received by the hoppers 32A and 32B are dropped and transferred to the seedling planting tool 35 located below the seedling receiving mechanism 31.

The seedling planting tool 35 is arranged below the seedling receiving mechanism 31 as a pair of left and right seedling planting tools 35A and 35B. In each of the seedling planting tools 35A and 35B, a member having a shape such as an inverted cone shape in which the lower portion is tapered is divided into two along the longitudinal direction and used as one set of members, and the one set of members is used. It is attached to the support frame 39 so that the lower ends thereof can be opened and closed left and right such that they are separated from each other and approach each other.

In this pair of left and right seedling planting tools 35A, 35B, the seedling receiving mechanism 31 and the seedling receiving mechanism 31 are moved upward so as to approach the seedling supplying device 20 in accordance with the planting time, and are received by the hoppers 32A, 32B of the seedling receiving mechanism 31. Seedlings are delivered. Subsequently, the seedling planting tools 35A, 35B are moved toward the ridges 102 so as to descend, and the lower end portions thereof are projected into the ridges 102 at a predetermined depth, and then the lower end portions thereof are separated to be in an open state. This causes the seedlings to fall into the soil of the ridge 102 and land. Thereafter, the seedling planting tools 35A, 35B move in the closed state by bringing their lower end parts close to each other, move so as to rise again, and return to their original positions, and then operate similarly.
Thereby, the seedling planting tools 35A and 35B are adapted to plant the seedlings on the ridges 102 with two rows at a time.

Further, as shown in FIGS. 1 and 3, the seedling planting device 30 is provided with a squeezing device 40 for squeezing the soil of the ridges 102 around the seedlings planted by the seedling planting device 35.
The compression device 40 is composed of a pair of compression wheels 41A and 41B arranged side by side so as to sandwich the pair of left and right seedling planting tools 35A and 35B, respectively. The compression wheel 41 is attached to the support frame 42 so as to be driven to rotate in an inclined posture so that the compression wheels 41 approach each other below.
By suppressing the soil around the seedlings by the seedling planting device 30, the planted seedlings are kept in a stable state.

Further, as shown in FIGS. 1 to 5, the seedling transplanting machine 1 is mounted on a mounting member 50 on which a water tank 95 as a container for storing water is mounted, and on the mounting member 50. An irrigation device 60 for supplying the water tank 95 to the ridges 102 of the field 100 where the seedlings are planted is provided.

The mounting member 50 includes a front mounting portion 51 for mounting the water tank 95 at a position in front of the input shaft 16 of the transmission case 15, and a water container at a position rearward of the input shaft 16 of the transmission case 15. It has a rear mounting portion 52 for mounting the tank 95.

In the first embodiment, the front mounting portion 51 and the rear mounting portion 52 are configured as the mounting members 50 provided so as to exist one each in the left-right direction of the vehicle body 10. As a result, the front mounting portion 51 has left and right front mounting portions 51A and 51B, and the rear mounting portion 52 has left and right rear mounting portions 52A and 52B.
Regarding the water tank 95, the tank mounted on the front mounting portion 51 is a front water tank 95F, and the tank mounted on the rear mounting portion 52 is a rear water tank 95R. Further, the water tank 95 is not particularly limited as long as it can store a required amount of water and has an opening 95a for taking in and out water. As the water tank 95, since a plurality of water tanks can be mounted and used, a relatively small capacity (small) water tank can be used. Specifically, for example, a 20-liter plastic tank can be applied. Is. Reference numeral 95t in FIG. 4 and the like indicates a handle portion used when an operator holds the water tank 95.

The front mounting portions 51A and 51B and the rear mounting portions 52A and 52B are both plate-shaped first supporting members 53 and plate-shaped second supporting members 54 arranged so as to intersect the first supporting members 53. And a plate-shaped enclosing member 55 that connects and reinforces the first support member 53 and the second support member 54 and that holds the side surface of the water tank 95 so as to surround it.

Of these, the first support member 53 includes a bottom surface portion 53a extending in the left-right direction of the vehicle body 10, and a left rising portion 53b and a right rising portion 53c which are bent upward at both end portions of the bottom surface portion 53a in the left-right direction and are respectively raised. It is a member having a shape having and.
The second support member 54 includes a bottom surface portion 54a extending in the front-rear direction of the vehicle body 10, and a front rising portion 54b and a rear rising portion 54c that are bent upward at both end portions of the bottom surface portion 54a in the front-rear direction and stand up. It is a member having a shape.
The enclosing member 55 passes through a substantially central height portion between the left rising portion 53b and the right rising portion 53c of the first supporting member 53 and the front rising portion 54b and the rear rising portion 54c of the second supporting member 54. The water tank 95 is a member having a shape capable of surrounding the side surface of the water tank 95 with a required gap.

The first support member 53 and the second support member 54 are fixed in a state where the bottom surface portion 53a and the bottom surface portion 54a are in contact with each other at their central portions substantially orthogonal to each other. The enclosing member 55 is fixed in a state in which the enclosing member 55 is in contact with a substantially intermediate height portion between the rising portions 53b and 53c of the first supporting member 53 and the rising portions 54b and 54c of the second supporting member 54, respectively. ..

Further, the front mounting portions 51A and 51B and the rear mounting portions 52A and 52B are attached to left and right independent plate-shaped support members 56A and 56B, respectively, as shown in FIGS. 4 and 6.
As shown in FIG. 6, the support members 56A and 56B cover a mounting portion 56d provided on a lower surface of a substantially central portion in the front-rear direction, for example, with a cylindrical shape that covers the input shaft 16 of the transmission case 15. It is fixedly attached to a part of the cover. As a result, the weights of the front water tank 95F and the rear water tank 95R placed on the front mounting portions 51A and 51B and the rear mounting portions 52A and 52B are mainly applied to the transmission case 15, and accordingly, the vehicle body is correspondingly weighted. The mechanical strength on the 10 side can be weakened.

Further, the front mounting portions 51A and 51B and the rear mounting portions 52A and 52B are arranged in the support members 56A and 56B so as to be maintained in a substantially horizontal state. Further, the front mounting portions 51A and 51B and the rear mounting portions 52A and 52B are arranged so as to exist at positions separated by substantially the same dimension with respect to the front and rear with the input shaft 16 interposed therebetween.
The front mounting portions 51A and 51B and the rear mounting portions 52A and 52B may be configured to be directly fixed to the transmission case 15 or the vehicle body 10 without the support members 56A and 56B. ..

The irrigation device 60 is interlocked with the operation of planting seedlings by the seedling planting device 30 to connect the water in the front water tank 95F mounted on the front mounting portion 51 of the mounting member 50 and the rear mounting portion 52 thereto. It is configured such that the water in the rear water tank 95R to be placed is started to be used at the same time and a required amount is supplied.

As shown in FIG. 4 and FIG. 5, the irrigation system 60 according to the first embodiment includes a pump 61 for sucking and sending out water, a front hose 62 for taking out water from a front water tank 95F, and a rear water tank 95R. A rear hose 63 for taking out the water, a first connecting member 64 for connecting the front hose 62 and the rear hose 63 so as to join, a water absorption hose 65 for connecting the first connecting member 64 and the pump 61, and a pump 61. It is configured with a drain hose 67 that connects between the watering nozzles 66.

Moreover, as shown in FIG. 5, the irrigation system 60 in the first embodiment mainly includes a front water tank 95FA and a rear water tank 95RA placed on the left side when viewed in the forward direction of the seedling transplanter 1. 60A for forming the left side water supply path, and the irrigation apparatus for forming the right side water supply path centered on the front water tank 95FB and the rear water tank 95RB placed on the right side when viewed in the forward direction. It is configured separately for 60B.

Of these, the pump 61 may be any pump capable of intermittently sucking and sending out a required amount of water in conjunction with the seedling planting operation of the seedling planting device 30, and for example, a plunger pump is applied. In FIG. 5, the irrigation devices 60A and 60B are illustrated as sharing one pump 61, but the pump 61 has two systems having the same pump function. As the pump 61, separate pumps may be applied to the watering devices 60A and 60B.

The hoses 62, 63, 65, 67 are not particularly limited, but hoses having flexible physical properties are applied from the viewpoint of workability such as routing. The front hose 62 and the rear hose 63 are used by inserting one ends thereof from the openings 95a in the front water tank 95F and the rear water tank 95R to the vicinity of the bottom surface inside the tank.

The first connecting member 64 serves as a confluence point of the flow paths, and for example, a hose joint having three connection ports communicating with each other is applied. Further, the first connecting member 64 is arranged at a position higher than the positions of the upper ends (openings 95a) of the front water tank 95F and the rear water tank 95R.

The irrigation nozzle 66 has a drainage port of a required shape and number, and is attached to the end of the drainage hose 67. The drainage hose 67 is inserted and connected to the mounting holes provided in the upper portions of the left and right seedling planting tools 35A and 35B in the seedling planting device 30, and is discharged from the respective irrigation nozzles 66 attached to their respective end portions. It is arranged so that water can be supplied into the seedling planting tools 35A and 35B, respectively. As a result, the irrigation devices 60A and 60B supply water through the left and right seedling planting tools 35A and 35B in the seedling planting device 30. In addition, in the irrigation devices 60A and 60B, the drainage hose 67 and the irrigation nozzle 66 are mounted so as to be connected to the upper portions of the left and right seedling planting implements 35A and 35B, so that the water supply is affected by the vibration of the machine body or wind. It will be done reliably without receiving.

Then, in the seedling transplanter 1, when the seedling planting operation of the seedling planting apparatus 30 is started, the pump 61 in the irrigation systems 60A and 60B sucks and sends out a required amount of water in synchronization with the planting operation. Works like.

As a result, the water delivered from the pump 61 flows through the drainage hoses 67 of the irrigation devices 60A and 60B to the respective irrigation nozzles 66 at the ends, and from each irrigation nozzle 66, the left and right seedling planting tools 35A in the seedling planting device 30, It is discharged toward 35B.

At this time, the water delivered from the pump 61 varies depending on the amount of water supplied at one time, but if the amount of water supplied at one time is small, it is inside the pump 61 or the water absorption hose 65. Water is used. At this time, the same amount of water as that used is taken out from the water tank 95 and replenished.

At this time, in the left irrigation device 60A, the water in the front water tank 95FA placed on the left front placing portion 51A of the placing member 50 and the rear water placed on the left rear placing portion 52A. After the water in the tank 95RA receives the suction force of the pump 61 and is respectively taken out from the front hose 62 and the rear hose 63, the water is joined by the first connecting member 64, and then the water is absorbed from the first connecting member 64 to the common water absorbing hose 65. As it flows, it is sent to reach the pump 61.
In addition, the irrigation system 60B on the right side operates similarly. That is, the water in the front water tank 95FB placed on the right front placement portion 51B of the placement member 50 and the water in the rear water tank 95RB placed on the right rear placement portion 52B are transferred to the pump 61. Similarly, after being taken out from the front hose 62 and the rear hose 63 and joined by the first connecting member 64, the first connecting member 64 flows to the common water absorbing hose 65 and reaches the pump 61. Sent.

As a result, in the seedling transplanter 1, the left and right irrigation devices 60A and 60B release water into the left and right seedling planting tools 35A and 35B at the position immediately before or at the time of planting in the seedling planting device 30, and the water is discharged. Is supplied to the ridges 102 of the field 100 together with the seedlings to be planted by the seedling planting tools 35A and 35B. Immediately before planting, the water at this time is supplied to the soil part where the roots of the seedlings have entered, so-called root pots, or passes through the interior of the seedling planting tools 35A, 35B around the planting position of the seedlings. It shall be supplied by being released.
In addition, at this time, in the seedling transplanting machine 1, as water passes through the inside of the seedling planting tools 35A and 35B, soil attached to the insides of the seedling planting tools 35A and 35B (a part of the soil constituting the root pot, It is possible to wash off the soil of the field 100 that is stuck at the time of planting, and thereby prevent seedlings from sticking inside the seedling planting tools 35A, 35B and not being planted in the field 100.

As described above, in the seedling transplanter 1, when a plurality of water tanks 95 (95FA, 95RA, 95FB, 95RB) are placed to supply water when planting seedlings, the plurality of water tanks 95 are connected to the transmission case 15. Each of the water in the front water tank 95F and the rear water tank 95R placed at the front and rear positions sandwiching the input shaft 16 and respectively placed at the front and rear positions (more specifically, the water tank 95FA and the water tank 95RA , Or each water in the water tank 95FB and the water tank 95RB) is started at the same time.

Therefore, in this seedling transplanter 1, even when the seedlings are planted by mounting a plurality of water tanks 95 that store water to be supplied when the seedlings are transplanted to the ridges 102 of the field 100, at least the transmission case. Compared to the case where the water in the front water tank 95FA (95FB) and the water in the rear water tank 95RA (95RB) placed at the front and rear positions sandwiching the input shaft 16 of 15 are not started at the same time, The amount of water consumed in the water tank 95FA (95FB) and the amount of water consumed in the rear water tank 95RA (95RB) rarely differ over time.
Therefore, according to the seedling transplanter 1, at least the front-rear balance of the machine body is less likely to be biased, and the bias of the front-back balance may cause the machine body to tilt forward and backward to change the planting depth of the seedlings. Suppressed.

Further, the seedling transplanting machine 1 automatically adjusts the planting depth by operating the lifting cylinder 18 based on the detection result of the sensor plate 19 to keep the vehicle body 10 substantially horizontal to the surface of the ridge 102. Has the function of being performed. However, for example, when the surface of the ridge 102 is substantially smooth, if the balance of the water tanks 95 is unbalanced and the front-rear balance of the machine body fluctuates and the front-rear tilt of the machine body occurs, the automatic adjustment function alone can reduce the planting depth. While it is not possible to deal with fluctuations, the seedling transplanting machine 1 of this embodiment is able to deal with it and is effective.

Further, in this seedling transplanter 1, the water in the front water tank 95FA (95FB) and the water in the rear water tank 95RA (95RB) placed in the left-right direction of the vehicle body 10 are started to be used at the same time, and the speed is almost the same. Is consumed.
Therefore, according to this seedling transplanting machine 1, the lateral balance of the machine body is less likely to be biased, and the lateral tilt of the machine body is generated due to the lateral balance bias, and the planting depth of the seedling fluctuates left and right. It is also suppressed.

In a multi-row seedling transplanter such as a two-row planting machine such as the seedling transplanter 1, if there is a difference in left and right heights of the ridges 102 (grooves), at least one of the left and right transmission cases 15 is input. A so-called rolling mechanism is provided, in which the amount of rotation about the shaft 16 as a fulcrum is adjusted to maintain the vehicle body 10 in a substantially horizontal posture with respect to the surface of the ridge 102. However, even when this rolling mechanism is provided, for example, when the heights of the surfaces of the ridges 102 are substantially the same, the left-right balance of the airframe fluctuates due to the imbalanced balance of the plurality of water tanks 95. When the lateral tilt of the machine body occurs, the rolling mechanism alone cannot cope with the fluctuation of the left and right planting depths, but the seedling transplanter 1 of this embodiment can cope with it and is effective.

Further, in this seedling transplanting machine 1, depending on the position of the arrangement of the first connecting member 64, when air is present in the front hose 62 and the rear hose 63, or only in one of the front or rear water tanks 95F (or 95R). When the remaining water remains, the negative pressure of the hose 62 (or 63) connected to the remaining water tank 95 decreases, so that the remaining water tank 95 preferentially Water can be taken out and used.
Therefore, this also makes it difficult for the front-rear balance of the machine body to be offset.

Incidentally, in this seedling transplanter 1, before starting the seedling planting operation by the seedling planting device 30, the pumps 61 are temporarily operated in the irrigation devices 60A and 60B so that they exist at least on the water absorption side of the pump 61. A preparatory operation for priming the hoses (62, 63, 65) with water is performed.
Thereby, the water supply (irrigation) by the irrigation devices 60A and 60B can be accurately started without delay or shortage in accordance with the start of the seedling planting operation by the seedling planting device 30.

Further, the seedling transplanter 1 is configured such that the front water tank 95F and the rear water tank 95R always start using at the same time. This is not a problem as long as the amount of water put into the plurality of water tanks 95FA, 95FB, 95RA, 95RB is completely the same and the amount of water sucked out at the time of planting work is completely the same.
However, in practice, for example, water in either the front water tank 95F or the rear water tank 95R often disappears first due to the difference in the amount of water that is input and the difference in the amount of water that is sucked out.
At this time, if the irrigation work is not performed when either of the front and rear water is lost, it is possible to prevent the front-rear balance of the vehicle body 10 from being disturbed, but some water tanks are sufficient for irrigation work. It becomes necessary to replenish water to the empty water tank 95 with water remaining. If the remaining planting work is at a slight stage, the above water replenishing work is an extra work, which causes problems such as a reduction in work efficiency and an extra labor for the worker. Further, when one of the front water tank 95F and the rear water tank 95R runs out of water, it is unlikely that a sufficient amount of water will be left in the other, which disturbs the balance of the vehicle body 10 to the front or rear.

Therefore, the seedling transplanter 1 may be configured to use the remaining water in either the front water tank 95F or the rear water tank 95R in the irrigation work for supplying water to the seedlings. Allowed.
As a result, even if the water in either the front water tank 95F or the rear water tank 95R runs out at the end of the seedling planting work, the seedling planting work and the water supply work can be continued, thus improving work efficiency. improves.
Further, since it is not necessary to replenish water to the empty water tank among the plurality of water tanks 95FA, 95FB, 95RA, 95RB during the planting operation, the labor of the worker is reduced.
Under the above conditions, when the water in all the water tanks 95FA, 95FB, 95RA, 95RB is exhausted during the planting work, water is replenished to the left and right water tanks, and the water tanks 95F, 95R of either one of the front and rear water tanks are replenished. Configure it to use water so that the rest of the planting work is done.

Further, in the seedling transplanting machine 1, as shown in FIG. 6 and the like, the left and right front mounting portions 51A, 51B and the rear mounting portions 52A, 52B are bent at the outer end portions in the left-right direction and obliquely outward. A right rising portion 53c provided with the upper end bent portion 53d is provided.

As a result, in the seedling transplanter 1, the height of the water tank 95 to be lifted, which is required when performing the work of unloading the water tank 95 with respect to the respective mounting portions 51 and 52 of the mounting member 50 at the time of replacement or the like. Becomes low (see FIG. 6). Further, when the water tank 95 is loaded and unloaded, it is possible to move the water tank 95 in such a manner that the water tank 95 slides on the upper end bent portion 53d of the right rising portion 53c on the outer side. It is possible to reduce and improve workability (see FIG. 7B). In this seedling transplanter 1, a large number of water tanks 95, for example, four, can be loaded and used at one time, and therefore the frequency of replacement for water replenishment is reduced, which improves work efficiency. Can be achieved.

Further, in the seedling transplanting machine 1, as shown in FIGS. 6 and 7, each mounting portion 51, 52 of the mounting member 50 is provided as a rotatable type structural portion as described below. Has been.
That is, the mounting portions 51 and 52 of the mounting member 50 are fixed to the cover cover of the input shaft 16 of the transmission case 15 and fixed to the support member 56A (56B), and the support member 56A (56B) is mounted on the vehicle body 10. A first support member 53, a second support member 54, and an enclosing member that are respectively attached so as to rotate outwardly (for example, in the direction indicated by arrow D1) with each outer end in the left-right direction intersecting the front-rear direction as a fulcrum. A movable member 57 composed of 55, a spring 58 which is an example of a biasing member for biasing the movable member 57 to rotate outward, and an inside of the movable member 57 opposite to the outside (for example, a direction indicated by an arrow D2). It is composed of a regulating member 59 that regulates the rotation of the movable member 57 so that the movable member 57 stops at a predetermined work position when the movable member 57 rotates.

The movable member 57 is provided such that the outer end portion of the bottom surface portion 53a of the first support member 53 is rotatable with respect to the support member 56A (56B) via the shaft 56e in the directions indicated by the arrows D1 and D2. ..
The restricting member 59 is, for example, as shown in FIGS. 6 and 7, a rod-shaped fixing member 59a fixed so as to project inward from the inner bottom surface of the inner end of the supporting member 56A (56B), and the movable member 57. An elastic fitting member (for example, a spring clip) which is provided in a portion where the inner end of the bottom surface portion 53a of the first support member 53 is extended and is bent and deformed so as to be sandwiched from both sides of the fixing member 59a. ) 59b. The predetermined working position is a position when the water tank 95 is placed and used.

As a result, in the seedling transplanting machine 1, when performing the work of loading and unloading the water tank 95 to and from each of the mounting portions 51 and 52 of the mounting member 50, the movable member 57 is moved as shown in FIG. 7(B). Since it can be turned to the outside and tilted at an oblique angle, the lifting height of the water tank 95 required during the unloading work becomes low, the unloading work becomes easy, and the labor of the operator is reduced. Will be reduced.
Further, even when the water tank 95 containing a large amount of water is unloaded from each of the mounting portions 51 and 52 of the mounting member 50, the movable member 57 on which the water tank 95 is mounted is biased by the spring 58. This makes it easier to rotate outward, which also reduces the labor of the operator.

[Second Embodiment]
FIG. 8 shows a part of the seedling transplanter according to the second embodiment of the present invention.
The seedling transplanter according to the second embodiment is different in that a irrigation system 70 having the configuration described below is applied instead of the irrigation system 60, but otherwise the seedling transplanter according to the first embodiment. It has the same configuration as 1.

When compared with the irrigation system 60 in the first embodiment, the irrigation system 70 in this seedling transplanter, as shown in FIG. 8, has a three-way valve 71 interposed in the middle of the front hose 62 and a first connecting member 64. A first relay hose 72 connected to the three-way valve 71, a second relay hose 73 connected to the three-way valve 71, and a second connecting member 74 for connecting the first relay hose 72 and the second relay hose 73 to join them. The difference is that the upstream end of the water absorption hose 65 is connected to the second connecting member 74, but the other configurations are the same.

The front hose 62 in the irrigation system 70 has a three-way valve 71 interposed between the upstream portion 62a connecting the front water tank 95F and the three-way valve 71, and the three-way valve 71 and the first connecting member 64. It is divided into a downstream portion 62b to be connected.
The three-way valve 71 connects the upstream portion 62a and the downstream portion 62b of the front hose 62 to flow water to the first connecting member 64, and connects the front hose 62 and the second relay hose 73 to the second connecting member. It is a switching valve that can be switched to a flow path r2 for flowing water to 74.
The second connecting member 74 can be configured by a hose joint similar to the first connecting member 64, but preferably has a temporary storage part (chamber) formed of a space capable of temporarily storing water. It consists of a hose joint.

Further, in the irrigation device 70, as shown in FIG. 8, the second connecting member 74 is arranged at a position lower than the lower end portions (for example, each bottom portion) of the front water tank 95F and the rear water tank 95R. The three-way valve 71 is arranged at a position lower than the upper end (for example, each opening 95a) of the front water tank 95F. The arrangement of the first connecting member 64 is the same as that of the first connecting member 64 in the first embodiment, and is arranged above the upper end portions (each opening portion 95a) of the front water tank 95F and the rear water tank 95R. It is located in a position.
The arrangement position of the second connecting member 74 may be a position that is equal to or higher than the pressure loss of the flow path to the second connecting member 74 which is the confluence point. Further, the three-way valve 71 is preferably arranged at a position above the second connecting member 74.

Further, in the irrigation system 70, the three-way valve 71 is switched to the flow path r1 for flowing water to the first connecting member 64 before the planting work by the seedling planting system 30 is started as shown in FIG. 9, and FIG. As shown in FIG. 5, when the planting operation is started, the flow path r2 for flowing water to the second connecting member 74 can be switched to. Switching of the three-way valve 71 is performed by a valve drive device controlled by a control device (not shown). The three-way valve 71 may be configured to be manually operated and switched by an operator based on conditions such as the elapsed time from the start of work and the amount of water in the water tank 95.

Further, also in the irrigation system 70, as in the case of the irrigation system 60 in the first embodiment (FIG. 5), the front water tank 95FA placed on the left side when viewed in the forward direction of the seedling transplanter 1 is used. The irrigation device 70A that forms the left water supply path centering on the rear water tank 95RA, the front water tank 95FB placed on the right side when viewed in the forward direction, and the right side centering on the rear water tank 95RB. It is configured separately from a watering device 70B that forms a water supply path.

Then, when the seedling planting operation of the seedling planting apparatus 30 is started, the irrigation devices 70A and 70B operate so that the pump 61 sucks and sends out a required amount of water in conjunction with the planting operation.

In particular, in the irrigation devices 70A and 70B, before the planting work is started, the three-way valve 71 is temporarily switched to the flow path r1 for flowing water to the first connecting member 64, as shown in FIG. A preparatory operation for priming the front hose 62, the rear hose 63, the first relay hose 72, and the water absorption hose 65 existing on the water absorption side of the pump 61 with water is performed.

As a result, the suction force of the pump 61 reaches the first connecting member 64 through the water absorbing hose 65 and the first relay hose 72, so that the water in the front water tank 95F receives the upstream portion 62a of the front hose 62, the three-way valve 71, and the front portion. While being sent to the first connecting member 64 via the downstream portion 62b of the hose 62, the water in the rear water tank 95R is sent to the first connecting member 64 through the rear hose 63 and joins. The combined water is sent to the pump 61 via the first relay hose 72, the second connecting member 74, and the water absorbing hose 65. At this time, water is also sent to the drain hose 67 existing on the discharge side of the pump 61.

As a result of the above preparatory operation, at least the front hose 62, the rear hose 63, the first relay hose 72, and the water absorption hose 65 that are present on the water absorption side of the pump 61 are as shown in FIG. Filled with water, the priming is complete. Also, the drain hose 67 at this time is actually filled with water, although it is shown in white in FIG. 9.
For this reason, the irrigation devices 70A and 70B are prepared so that the supply of water (irrigation) can be started appropriately in accordance with the start of the seedling planting operation by the seedling planting device 30.

Subsequently, in the irrigation devices 70A and 70B, when the seedling planting operation is started, the three-way valve 71 is switched to the flow path r2 for flowing water to the second connecting member 74 as shown in FIG. A watering operation is performed.
When the three-way valve 71 is switched to the flow path r2, water in the upstream portion 62a of the front hose 62 flows into the second relay hose 73 via the three-way valve 71, but due to the arrangement position of the three-way valve 71, At the same time, the same amount of water is extracted from the front water tank 95F by the siphon principle and is replenished by flowing into the upstream portion 62a of the front hose 62 and flowing. Further, at this time, the water in the downstream portion 62b of the front hose 62 remains and remains between the first connecting member 64 and the three-way valve 71.

As a result, as in the case of the irrigation devices 70A and 70B in the first embodiment, the water delivered from the pump 61 flows through the drainage hoses 67 of the irrigation devices 70A and 70B to the respective irrigation nozzles 66 at the ends, and The water is discharged from each irrigation nozzle 66 into the left and right seedling planting tools 35A and 35B in the seedling planting device 30, respectively.

Further, also in the watering devices 70A and 70B, the water sent from the pump 61 is the water in the pump 61 or the water suction hose 65, and the same amount of water as the used water is in the water tank 95. It is taken out of and replenished.

At this time, in the left irrigation apparatus 70A, the water in the front water tank 95FA mounted on the left front mounting portion 51A of the mounting member 50 receives the suction force of the pump 61, and the water in the front water tank 95FA is located upstream of the front hose 62. After being taken out by 62a, it is sent to the second connecting member 74 via the three-way valve 71 and the second relay hose 73. Further, after the water in the rear water tank 95RA placed on the left rear placing portion 52A is taken out by the rear hose 63, the second connecting member is passed through the first connecting member 64 and the first relay hose 72. Sent up to 74.
Subsequently, the water in the front water tank 95FA and the water in the rear water tank 95RA merge at the second connecting member 74, and then flow from the second connecting member 74 to the water absorption hose 65 and reach the pump 61. ..
In addition, the irrigation system 70B on the right side operates similarly.

As a result, in the left and right irrigation devices 70A and 70B, water is discharged into the left and right seedling planting devices 35A and 35B at the position immediately before planting or at the time of planting in the seedling planting device 30, and the seedling planting devices 35A and 35B are discharged. Water is supplied to the seedlings and the like existing inside. In addition, the seedlings at this time are planted in the ridges 102 of the field 100 while being supplied with water.

Also in the seedling transplanter equipped with the watering devices 70A and 70B, a plurality of water tanks 95 (95FA, 95RA, 95FB, 95RB) that store water to be supplied when the seedlings are transplanted to the ridges 102 of the field 100 are placed. Even when planting the seedlings, the amount of water consumed in the water tank 95FA (95FB) in the front of the plant and the water tank 95RA in the rear thereof are similarly to the case of the plant transplanter 1 according to the first embodiment. The consumed amount of (95 RB) water hardly changes with the passage of time. 8 to 10, the two-dot chain line indicated by the symbol Sw indicates the water surface (water level) of the stored water for reference.

Therefore, even with the seedling transplanter according to the second embodiment, at least the front-rear balance of the machine body is less likely to be biased, and the bias of the front-back balance causes the machine body to tilt forward and backward, resulting in a planting depth of seedlings. Fluctuation is suppressed.
Further, according to this seedling transplanting machine, as in the case of the seedling transplanting machine 1 according to the first embodiment, the lateral balance of the machine body is less likely to be offset, and the lateral balance of the left and right sides of the machine body causes the lateral shift of the machine body. It is also possible to prevent the planting depth of the seedlings from fluctuating from side to side due to tilting.

Further, in the seedling transplanting machine according to the second embodiment, since the preparatory operation is performed in the irrigation devices 70A and 70B before the start of the planting work of the seedlings, the water supply (irrigation) by the irrigation devices 60A and 60B is performed. With the start of the planting operation of the seedlings by the planting device 30, the planting can be started accurately without causing any delay or shortage.
Moreover, depending on the arrangement position of the second connecting member 74, even if one of the front water tank 95F and the rear water tank 95R may be emptied first, the water tank 95F (or 95R) on the side where water remains It is possible to reliably take out water from the tank, and it is possible to avoid that the amount of water to be supplied is immediately reduced.

In addition, when the above-mentioned temporary storage part (chamber) is attached as the second connecting member 74 in the irrigation devices 70A and 70B, the water stored in the temporary storage part is sent to the pump 61. Can be used. Therefore, for example, even if the hose existing upstream of the water tank 95 or the second connecting member 74 becomes empty (no water) during the irrigation operation, It is possible to prevent the pump 61 from sucking air on the way and causing an abnormality in the watering operation.

In addition, in the irrigation systems 70A and 70B according to the second embodiment, the three-way valve 71 may be arranged in the middle of the rear hose 63 instead of the front hose 62.
In this case, the rear hose 63, instead of the front hose 62, intervenes the three-way valve 71 to connect the water tank 95R on the rear side to the three-way valve 71, the upstream portion 63a, the three-way valve 71 and the first connection. The only difference is that it is divided into a downstream portion 63b connecting between the member 64 and the member 64.

[Third Embodiment]
FIG. 11 shows a part of a seedling transplanter according to the third embodiment of the present invention.
The seedling transplanter according to the third embodiment is different in that the arrangement position of the first connecting member 64 in the irrigation device 60 is changed, but otherwise the same configuration as the seedling transplanter 1 according to the first embodiment. It consists of

When the watering device 60 (60A, 60B) in this seedling transplanter is compared with the watering device 60 (60A, 60B) in the first embodiment, a front hose 62 and a rear hose 63 are provided as shown in FIG. The first connecting member 64, which is connected so as to join together, is different in that it is arranged at a position lower than the positions of the lower ends (for example, the bottoms) of the front water tank 95F and the rear water tank 95R, but otherwise the same. Is configured.
Further, also in the irrigation system 60 (60A, 60B) to which the first connecting member 64 whose arrangement position is changed is applied, the same irrigation operation as the irrigation system 60 (60A, 60B) in the first embodiment is performed.

And also in the seedling transplanter provided with the irrigation devices 60A and 60B in the third embodiment, a plurality of water tanks 95 (95FA, 95RA, 95A, 95RA, which store water to be supplied when the seedlings are transplanted to the ridges 102 of the field 100). (95 FB, 95 RB) when carrying out planting work of seedlings, as in the case of the seedling transplanter 1 according to the first embodiment, water in the water tank 95FA (95FB) in front of the seedling transplanter 1 is consumed. The amount of water consumed and the amount of water consumed in the rear water tank 95RA (95RB) hardly change over time.
Therefore, even with the seedling transplanter according to the third embodiment, at least the front-rear balance of the machine body is less likely to be biased, and the bias of the front-rear balance causes the machine body to tilt forward and backward, resulting in a planting depth of seedlings. Fluctuation is suppressed.
Further, according to this seedling transplanting machine, as in the case of the seedling transplanting machine 1 according to the first embodiment, the lateral balance of the machine body is less likely to be offset, and the lateral balance of the left and right sides of the machine body causes the lateral shift of the machine body. It is also possible to prevent the planting depth of the seedlings from fluctuating from side to side due to tilting.

Further, in the seedling transplanting machine according to the third embodiment, even if one of the front water tank 95F and the rear water tank 95R may be emptied first, depending on the arrangement position of the first connecting member 64. Since the hose 62 (or 63) connected to the water tank 95 on the side where the water remains has a positive pressure, the water is taken out from the water tank 95 where the water remains, and the amount of water supplied during the irrigation operation. It is possible to avoid that the number is reduced immediately.

[Modification]
In the first to third embodiments, the mounting member 50 that mounts the water tanks 95F and 95R (including the left and right) in the left-right direction of the vehicle body 10 so that the water tanks 95F and 95R are located outside the rear wheel 14 on the left and right sides. A configuration example is shown. However, if possible, the mounting member 50 may be configured to be mounted so that the water tanks 95F and 95R (including the left and right) are located inside the rear wheel 14.
The mounting member 50 may be configured to be mounted on the vehicle body 10 or mounted on both the transmission case 15 and the vehicle body 10.

Further, the seedling transplanting machine of the present invention may be arranged so that the rear wheel 14C is located outside the transmission case 15 on the left and right sides, as illustrated in FIG. Also in the case of this configuration example, the mounting member 50 may be configured such that the water tanks 95F and 95R (including the left and right) are mounted inside the rear wheel 14C.

Further, in the first to third embodiments, each of the hoses 62, 63, 65, 67, 72, 73 in the irrigation devices 60, 70 has a single hose structure (one flow path). The case of applying is illustrated. However, as each of these hoses, a hose having a configuration in which a plurality of hoses each having a narrow channel diameter (including the outer diameter of the hose) are arranged in parallel may be applied.

When arranging or arranging a plurality of thin hoses as described above or bundling them, if the diameter is equal to that of the hose used in the first to third embodiments, the hose arrangement (arrangement) Changes in the required space are prevented.

In addition, before the seedling planting work, it is necessary to perform the above-mentioned work of priming so that the set amount of water is also supplied to the seedlings planted first.
However, in the case of a large-diameter hose, the cross-sectional area through which water passes is large, so it takes a long time from the start of sucking water until the water fills the cross-sectional area, and a space for air to pass through easily occurs. This requires a long time, which causes a problem that the working time is extended and extra fuel is required to operate the pump 61. In addition, when the water starts to be drawn in, the range in which the water can move in the hose is wide, so that turbulent flow is likely to occur, resulting in a large pressure loss and a long time until the water supply path is filled with water.
On the other hand, in the case of a small-diameter hose, since the cross-sectional area through which water passes is small, the water is quickly filled and the air is pushed out first or the passage of air is blocked.
Therefore, when a plurality of small-diameter hoses are arranged or bundled as each hose in the irrigation devices 60 and 70, the time required for priming is shortened, and the working time and fuel consumption are reduced. Also, when water starts to be drawn, the hose is filled with water in a short time, turbulence is less likely to occur, pressure loss is suppressed, and water can be filled in the water supply path in a short time, which shortens working time. Is planned.

In addition, in the second embodiment, the first connecting member 64 in the irrigation device 70 can be arranged in a position lower than the lower end portions of the front container 95F and the rear container 95R. In this case, the first connecting member 64 may be arranged at a position higher than the second connecting member 74, for example.

Further, in the first to third embodiments, the seedling supply device 20 exemplifies a configuration example of a system in which seedlings are supplied from the seedling storage cups 23 that are revolved by the endless chain 21, but as the seedling supply device 20, For example, it is also possible to apply the seedling supply device (5) of the method described in Patent Document 1 described above, in which the seedling take-out nails (28) are used to take out from the seedling raising pot of the seedling tray (paragraphs 0027 to 0044 of Patent Document 1 and drawings. 1 to 6. The numbers in parentheses in this paragraph indicate the reference numerals used in Patent Document 1.).
In this type of seedling supply device (5), seedlings taken out from the seedling raising pot of the seedling tray in a state of being hooked on the tip side of the seedling take-out nails (28) are planted under the seedling supply device (5). It will be supplied by dropping it inside the seedling planting tool (11) in the device (7) (see FIG. 5 and the like of Patent Document 1).

When applying a seedling supply device of the type that takes out seedlings from the seedling raising pot of such a seedling tray, the seedling take-out nails (or seedling take-out nails) shown in FIG. 13 and the seedling take-out nails 81 and 82 shown in FIG. 14 are used. It is advisable to employ the seedling picking claw 83.

Both of the seedling take-out pawls 81 and 82 shown in FIG. 13 are a type (fixed type) in which two claws 801 and 802 that extend substantially parallel to each other with a desired gap between them are not movable with respect to a base 800 that also serves as a mounting portion. belongs to.
The seedling take-out claw 81 shown in FIG. 13(A) has two claws 801 and 802 with a diamond-shaped hooking portion 803 formed at the tips thereof. Further, the seedling take-out nail 82 shown in FIG. 13(B) has arrowhead-shaped hooking portions 804 formed at the tips of the two nails 801 and 802 and having folding back projections 804a and 804b projecting back to the base 800 side. It is a thing.

When such seedling taking-out nails 81 and 82 are adopted, the roots of the seedlings in the seedling raising pot are spread over the soil in comparison with the seedling taking-out nails in which the tips of the two nails 801 and 802 are simply tapered. The so-called root pot, which is formed by being hooked, can be easily taken out in a securely hooked state by the effect of the hooks 803 and 804, and the seedling take-out performance can be improved.
In particular, even if the root pot is weak due to the fact that the soil soil is not likely to be agglomerated or the root is not sufficiently stretched, it can be reliably taken out easily. Further, since the seedling take-out claw 82 can more strongly obtain the effect of returning the folded back projections 804a and 804b, a higher take-out performance than the seedling take-out claw 81 can be obtained.

In the seedling picking-out claw 83 shown in FIG. 14, two movable claws 811 and 812 that extend substantially parallel to each other with a desired interval with respect to the attachment part 810 rotate at a base 813 with a shaft 814 as a fulcrum, and the tip ends. It is a type (movable type) that opens and closes on the side.
In this movable type seedling take-out claw 83, hooks 816 each having a rounded triangular shape protruding outward are formed at the tips of the two movable claws 811 and 812. Each of the movable claws 811 and 812 is provided with a biasing member such as a torque spring on each base portion 813 thereof, so that the end portions of the movable claws 811 and 812 on the side where the hook portions 816 are formed are close to each other. Is urged to

Reference numeral 815 in FIG. 14 denotes a seedling extruded body that pushes out the seedlings taken out by the movable claws 811 and 812 and drops and moves the seedlings into the seedling planting device 30, for example. The seedling extruded body 815 is formed by winding a metal or soft resin material in a coil shape, and surrounds the coiled portion from the outside of the two movable claws 811 and 812. Attached to. Reference numeral 817 is a moving member (extruding rod) that is moved along the two movable claws 811 and 812 to move the seedling extruding body 815 forward and backward.

In addition, in FIG. 14(A), with respect to the seedling take-out nail 83, the moving member 817 drives the seedling extruding body 815 to retreat to bring the seedling extruding body 815 into contact with each base portion 813 of the movable nails 811 and 812. The movable claws 811 and 812 of the book are separated from each other and opened, and the state is shown in which the seedling 200 is pierced and the seedling is taken out. In FIG. 14(B), the moving member 817 drives the seedling extruding body 815 to move forward to move the seedling extruding body 815 to the seedling extruding position, whereby the tips of the two movable claws 811 and 812 approach each other. Then, the state is shown when the seedling 200 taken out is dropped and opened (actually, it is supplied to the seedling planting device 30).

When such a movable type seedling take-out claw 83 is adopted, compared with a seedling take-out claw in which the tips of the two movable claws 811 and 812 are simply tapered, the seedling 200 in the seedling raising pot is hooked with a portion 816. Due to the effect of turning back, it becomes easier to take out the seedling in a surely hooked state, and the take-out performance of the seedling can be improved. On the other hand, when the taken-out seedling 200 is dropped and opened, the tip end portions of the two movable claws 811 and 812 are brought close to each other to be in a closed state. Can be easily released, and good seedling release performance can be secured.

This invention is useful, for example, as a seedling transplanter for transplanting onion seedlings, but it is suitable for transplanting seedlings of that kind as long as it is a seedling of a type that can also supply water when planting seedlings. It can be configured and applied as a transplanter.

1 Seedling transplanter 10 Vehicle body 11 Drive device 13 Front wheels (part of traveling device)
14 Rear wheels (part of traveling device)
15 transmission case 16 input shaft 17 transmission means 30 planting device 50 mounting member 51 front mounting portion 52 rear mounting portion 53b rising portion 53d upper end bending portion 56 support member 56e shaft (fulcrum)
57 movable member 58 urging member 59 regulating member 60, 70 watering device 61 pump 62 front hose 63 rear hose 64 first connecting member 65 water absorption hose 66 watering nozzle 67 drainage hose 71 three-way valve 72 first relay hose 73 second relay hose 74 Second Connection Member 95 Water Tank (Container)
95F Front water tank 95R Rear water tank 95a Opening (an example of upper end)
100 fields r1, r2 flow paths

Claims (6)

A vehicle body (10) provided with a drive device (11) and a traveling device (13, 14) capable of traveling in a field (100);
A transmission case (15) accommodating means (17) for transmitting the driving force of the drive device (11) from the input shaft (16) provided on the vehicle body (10) to the traveling device;
A planting device (30) for planting seedlings in the field,
A mounting member (50) for mounting a container (95) storing water,
An irrigation device (60) for supplying water in a container (95) placed on the placing member (50) to a field where seedlings are planted;
In a seedling transplanter (1) equipped with
The mounting member (50) includes a front mounting portion (51) for mounting the container (95) at a position in front of the input shaft (16) of the transmission case (15) and the transmission case (15). A rear mounting part (52) for mounting the container (95) at a position rearward of the input shaft (16),
The irrigation system (60) includes a front container (95F) mounted on the front mounting part (51) and a rear container (95R) mounted on the rear mounting part (52). A seedling transplanter characterized by being supplied using water. The irrigation device (60) includes a pump (61) for sucking and delivering water, a front hose (62) for taking out water from the front container (95F), and a rear hose for taking out water from the rear container (95R). (63), a first connecting member (64) for connecting the front hose (62) and the rear hose (63) so as to merge, and between the first connecting member (64) and the pump (61). It is composed of a water suction hose (65) to be connected and a drain hose (67) to connect between the pump (61) and the watering nozzle (66),
The said 1st connection member (64) is arrange|positioned above the upper end part (95a) of the said front container (95F) and the said rear container (95R), It is characterized by the above-mentioned. Seedling transplanter described. The said 1st connection member (64) is changed and arrange|positioned to the position lower than the lower end part of the said front container (95F) and the said rear container (95R), It is characterized by the above-mentioned. Seedling transplanter described. The irrigation device (70) is connected to the irrigation device (60), a three-way valve (71) interposed in the middle of the front hose (62) or the rear hose (63), and the first connecting member (64). The first relay hose (72), the second relay hose (73) connected to the three-way valve (71), the first relay hose (72) and the second relay hose (73). A second connecting member (74) for connecting and a water absorption hose (65) for connecting between the second connecting member (74) and the pump (61) are additionally provided,
The second connecting member (74) is arranged at a position lower than the lower end portions of the front container (95F) and the rear container (95R),
The three-way valve (71) is arranged at a position lower than the upper end (95a) of the front container (95F) or the rear container (95R) on the side to be connected, and the planting device ( 30) is switched to a flow path (r1) for flowing water to the first connecting member (64) before the start of the planting operation, and a flow path for flowing water to the second connecting member (74) at the start of the planting operation. The seedling transplanter according to claim 2 or 3, wherein the seedling transplanter is switched to (r2). The mounting member (50) includes left and right front mounting portions (51A, 51B) in which the front mounting portion (51) is arranged in a left-right direction intersecting a front-back direction of the vehicle body (10), and And a left and right rear mounting portions (52A, 52B) in which the rear mounting portion (52) is arranged in the left-right direction,
Start-up in which the left and right front mounting portions (51A, 51B) and the rear mounting portions (52A, 52B) are provided with upper end bending portions (53d) that are obliquely bent outward at the outer end portions in the left-right direction. The seedling transplanter according to any one of claims 1 to 4, wherein a part (53b) is arranged. The mounting member (50) includes a support member (56) attached to the transmission case (15) or a part of the vehicle body (10), and a front and rear direction of the vehicle body (10) on the support member (56). A movable member (57) mounted so as to rotate outward with the outer end portion in the left-right direction intersecting as a fulcrum, and a biasing member (58) for biasing the movable member (57) to rotate outward. ) And a restricting member (59) for restricting rotation of the movable member (57) so as to stop at a predetermined work position when the movable member (57) rotates inwardly opposite to the outside. The seedling transplanter according to any one of claims 1 to 5, which is configured.

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