JP2020110111A - Spraying device - Google Patents

Abstract

To facilitate handling of the structure for supporting a body part in a spraying device equipped in a transplanter.SOLUTION: The spraying device equipped in a transplanter includes: a body part C that sprays agricultural materials in a farm field; and a support part E that is installed in the transplanter and that supports the body part C. The support part E is composed of: a main support member 70 which extends in a lateral direction of a transplanter frame and which supports the body part C; and two sub-support members 80, 90 which are installed in the planting device of the transplanter and which support the main support member 70.SELECTED DRAWING: Figure 5

Description

The present invention relates to a spraying device provided in a transplanter.

For example, Patent Document 1 describes a rice transplanter equipped with two chemical spraying devices. The two drug spraying devices are each supported by an inverted U-shaped frame when viewed from the rear.

JP, 2017-63681, A

In the rice transplanter described in Patent Document 1, the frame that supports the chemical spraying device on the main seedling mounting table side is a pipe frame that is connected in a reverse U shape, and thus is a large bulky component, which is a large bulky component at the time of manufacturing or disassembling. It is inconvenient because of poor handling as parts during maintenance. In addition, the frame supporting the chemical spraying device on the side of the sub-seedling table is configured to be rotatable so that the position of the chemical spraying device can be changed. Although this frame is composed of a plurality of members, it is not supposed to be disassembled, and like the frame on the main seedling mounting table side, handling as a part is poor.

In view of the above-mentioned circumstances, it is an object of the present invention to provide means for facilitating the handling of the structure for supporting the main body portion in the spraying device provided in the transplanter.

The spraying device of the present invention is a spraying device provided in a transplanter, comprising a main body part for spraying agricultural materials on a field, and a support part attached to the transplanter for supporting the main body part, The support portion extends in a lateral direction of the body of the transplanter, and includes a main support member that supports the main body portion, and two sub-support members that are attached to the planting device of the transplanter and that support the main support member. It is characterized by being provided.

According to this characteristic configuration, since the support portion that supports the main body portion is configured by the three members, that is, the main support member and the two sub-support members, it is easy to handle the support portion at the time of manufacturing the disperser or disassembling and servicing. Becomes In particular, it is preferable that the three members are disassembled and assembled so that the supporting portion can be kept in a bulky state during storage and transportation, and the handling of the supporting portion can be facilitated.

In the present invention, the main support member is provided with a plurality of attachment portions to which the main body portion can be attached, and positions of the plurality of attachment portions in a lateral direction of the machine of the transplanter are different from each other. ..

According to this characteristic configuration, since the main body can be attached to the main support member at a plurality of positions, the main body is suitable for spraying agricultural materials according to the layout of the support in the transplanter. Can be placed in position. For example, it is possible to support a plurality of types of transplanters having different numbers of threads with one type of support portion. Further, even if the support portion is arranged at a position deviated in the lateral direction of the machine body in the transplanter, the spraying device can be arranged at a desired place by attaching the main body portion to any of the plurality of attachment portions. In other words, the degree of freedom in arranging the support portion in the transplanter can be increased.

In the present invention, the first attachment portion of the plurality of attachment portions is provided at a central portion of the main support member in the lateral direction of the machine of the transplanter, and the second attachment portion of the plurality of attachment portions is provided. The attachment portion is provided at an end portion of the main support member in the lateral direction of the body of the transplanter.

According to this characteristic configuration, the main body portion can be selectively attached to the first attachment portion or the second attachment portion of the main support member, so that the main body portion can be attached to the agricultural machine according to the layout of the support portion in the transplanter. It can be arranged at a position suitable for spraying the material. For example, when the support portion is located at the center of the transplanter in the lateral direction of the machine, the main body can be arranged at the center of the transplanter in the lateral direction of the machine by attaching the main body to the first mounting portion. For example, when the support portion is located at a position deviated from the center of the transplanter in the lateral direction of the machine, the main body is attached to the second mounting portion so that the main body is arranged closer to the center of the transplanter in the lateral direction of the machine. can do.

In the present invention, the third attachment portion of the plurality of attachment portions is provided at an intermediate portion between the first attachment portion and the second attachment portion of the main support member in the lateral direction of the body of the transplanter. It is characterized by

According to this characteristic configuration, since the main support member includes the third mounting portion in addition to the first mounting portion and the second mounting portion, it becomes possible to dispose the main body portion at a more appropriate position. ..

In the present invention, the two sub-supporting members are rod-shaped members and are attached to end portions of the main supporting member in the lateral direction of the machine body, and have different bending shapes in the longitudinal direction of the machine body. And

According to this characteristic configuration, the arrangement of the two sub-support members can be switched according to the state of the place where the spraying device is arranged in the transplanter, so that the interference between other mechanisms in the transplanter and the spraying device can be avoided. ..

In the present invention, the two sub-support members are supported by a transmission case that rotatably supports a rotary case having a pair of planting arms at both ends in the planting device of the transplanter,
One of the two auxiliary support members is supported by one of the two adjacent transmission cases, and the other of the two auxiliary support members is supported by the other of the adjacent two transmission cases. Is characterized by.

According to this characteristic configuration, since the two sub-support members are supported by the two adjacent transmission cases, the support portion is supported by the sturdy transmission case, and vibration applied to the main body portion can be reduced.

In the present invention, the main support member is provided with a temporary support portion that allows the main body portion to be hooked and supported.

According to this characteristic configuration, since the main body can be supported by the temporary support portion when the main body is attached to and detached from the main support member, the attachment and detachment work of the main body is facilitated, which is preferable.

It is a left side view showing the whole riding type rice transplanter. It is a top view which shows the whole riding type rice transplanter. It is a side view of a spraying device. It is a rear view which shows the connection part of a spraying apparatus and a transmission case. It is a perspective exploded view of a spraying device. It is a rear view which shows the state which attached the spraying apparatus to the seedling planting apparatus of 8-row planting. It is a rear view which shows the state which attached the spraying apparatus to the seedling planting apparatus of 4-row planting. It is a rear view which shows the state which attached the spraying apparatus to the seedling planting apparatus of 6-row planting. It is a rear view which shows the state which attached the spraying apparatus to the 10-row seedling planting apparatus. It is a rear view which shows the state which attached the spraying apparatus to the 5 row seedling planting apparatus.

Hereinafter, a case where the embodiment of the present invention is applied to a riding-type rice transplanter as an example of a transplanter will be described with reference to the drawings.

[Overall structure of riding rice transplanter]
In the following description, with respect to the body 1 of the riding type rice transplanter, the direction of the arrow F shown in FIGS. 1 and 2 is “the body front”, the direction of the arrow B is “the body rear”, and the direction of the arrow R shown in FIG. Is the "machine right side", and the direction of the arrow L is "machine left side".

As shown in FIGS. 1 and 2, the riding type rice transplanter is equipped with right and left front wheels 2 as a traveling device so as to be steerable and drivable, and with right and left rear wheels 3 as a traveling device. It has a machine body 1 that is drivably equipped. A prime mover 5 having an engine 4 as a prime mover is formed at the front of the machine body 1. At the rear part of the machine body 1, a riding type driving part 8 including a driving seat 6 and a steering wheel 7 for steering the front wheels 2 is formed.

A seedling planting device 20 as a planting device is connected to the rear part of the machine body 1 via a link mechanism 9. The seedling planting device 20 is vertically moved by a vertically swinging operation of the link mechanism 9 with respect to the machine body 1 in a descending working state and a rising non-working state. The swinging operation of the link mechanism 9 with respect to the machine body 1 is performed by the expansion and contraction operation of the hydraulic lifting cylinder 16. Preliminary seedling storage devices 10 are provided on the left and right sides of the front of the machine body 1. Each of the left and right spare seedling storage devices 10 includes three spare seedling mounts 11. The three spare seedling mounting bases 11 can be switched between an extended state in which they are arranged in a line in a direction along the front-rear direction of the machine body 1 for use and a folded state in which they are vertically stacked in three stages. An antenna unit 13 for satellite navigation is supported between the support column 12 of the left preliminary seedling storage device 10 and the support column 12 of the right preliminary seedling storage device 10. A fertilizer application device 14 is provided at the rear of the machine body 1. When the seedling planting device 20 performs seedling planting, the fertilizer application device 14 can supply fertilizer near the planted seedlings.

[About the configuration of the seedling planting device 20]
As shown in FIGS. 1 and 2, the seedling planting device 20 includes a planting machine body 20</b>A configured by four transmission cases 21 and the like arranged side by side in the lateral width direction of the machine body 1. Seedling planting mechanisms 22 are provided on both sides of the rear of each of the four transmission cases 21. In the present embodiment, the seedling planting device 20 is provided with a total of eight seedling planting mechanisms 22. That is, the seedling planting device 20 according to the present embodiment is an eight-row planting device. As shown in FIG. 2, each of the eight seedling planting mechanisms 22 is rotatably supported by a rotating case 22a rotatably supported by the transmission case 21 and both end portions of the rotating case 22a. The planting arm 22b is provided. Each of the pair of planting arms 22b is provided with a planting claw.

A seedling stand 23 is provided above the front part of the planting machine 20A. As shown in FIG. 2, on the seedling placing table 23, eight seedling placing portions 23a provided corresponding to the respective eight seedling planting mechanisms 22 are formed. That is, the seedlings to be supplied to the eight seedling planting mechanisms 22 are arranged and stored on the seedling platform 23 side by side in the lateral width direction of the planting machine 20A. A vertical seedling feeding belt 24 is provided on each of the eight seedling placement portions 23a.

When the seedling planting device 20 is lowered to the descending work state and operated to the driving state, power is transmitted from the engine 4 to the feed case 25 (see FIG. 1) supported by the front part of the planting machine body 20A, It is input from the feed case 25 to each of the four transmission cases 21, and each of the eight seedling planting mechanisms 22 is driven by the power of the transmission case 21 to perform seedling planting between the lower end side of the seedling stand 23 and the rice field. Make a rotational movement for. When the seedling planting mechanism 22 rotates, the planting claws of the pair of planting arms 22b alternately rotate vertically between the seedling take-out port and the rice field formed on the lower end side of the seedling platform 23, The planting claws of the pair of planting arms 22b take out the planting seedlings from the seedlings on the seedling mounting table 23 at the seedling take-out port, and the taken-out planting seedlings are conveyed down and planted on the rice field.

A lateral seedling feeding mechanism (not shown) provided between the seedling placing table 23 and the feed case 25 is driven by the power of the feed case 25 in association with the rotational movement of the seedling planting mechanism 22, and the seedling placing table is driven. 23 is reciprocally transferred in the lateral width direction of the planting machine body 20A in association with the rotational movement of the seedling planting mechanism 22 by the seedling lateral feeding mechanism. As a result, the seedlings placed on each of the eight seedling placement sections 23a are laterally reciprocated with respect to the seedling planting mechanism 22, and each of the eight seedling planting mechanisms 22 is transferred to the seedling placement section 23a. The seedlings for planting are sequentially taken out from one end side to the other end side in the widthwise direction of the seedlings placed on.

When the seedling placing table 23 reaches the stroke end in the left and right lateral transfer, a seedling longitudinal feeding mechanism (not shown) provided between the seedling placing table 23 and the feed case 25 is driven by the power of the feed case 25. The seedling vertical feed belts 24 of the eight seedling placement portions 23a are driven by a vertical seedling feed mechanism (not shown). That is, every time the seedling placing table 23 reaches the stroke end of the lateral transfer on the left and right, the seedlings placed on each of the eight seedling placing portions 23 a are directed to the seedling planting mechanism 22 by the seedling vertical feed belt 24. Then, the seedlings taken out by the seedling planting mechanism 22 are vertically fed by an amount corresponding to the length in the seedling vertical direction.

In the seedling planting device 20, when the machine body 1 travels in the lowered work state, the power transmitted from the engine 4 to the feed case 25 causes the eight seedling planting mechanisms 22, the seedling platform 23, and The seedling vertical feed belt 24 is driven, and the eight seedling planting mechanisms 22 perform eight-row planting. The seedling planting for one row by each of the eight seedling planting mechanisms 22 is performed between the set stocks by alternate planting of a pair of planting claws. The space between plants is the planting interval in the traveling direction of the machine body 1.

[About the structure of the drug spraying device]
As shown in FIGS. 1 and 2, a drug spraying device A (an example of a spraying device) is provided at the rear part of the seedling planting device 20. The chemical spraying device A is a device for spraying a drug (an example of agricultural material) such as a herbicide on a field. The chemical spraying device A includes a main body C for spraying a chemical on the field, and a support E attached to the seedling planting device 20 of the riding type rice transplanter and supporting the main body C.

As shown in FIGS. 3 and 5, the main body portion C is provided with a main body case 30 and a drug hopper 40 that is connected to an upper portion of the main body case 30 and stores a drug. Inside the main body case 30, a feeding section 50 for feeding the medicine stored in the medicine hopper 40, and a diffusion section for diffusing the medicine fed out by the feeding section 50 diagonally rearward and downward in the left-right direction while spraying it on the field. And 60 are provided.

As shown in FIGS. 3 and 5, a bracket 32 is attached to a rear portion of the main body case 30 with bolts 31. The upper end portion 32a of the bracket 32 at the center portion in the left-right direction is formed in an inverted U-shape in a cross section in a plane orthogonal to the left-right direction so that it can be engaged with an upper end portion 71 (described later) of the main support member 70. There is. Two bolt holes 32b are provided in the upper portion of the bracket 32.

The feeding unit 50 is configured to feed a set amount of medicine for each operation. The diffusing unit 60 is provided with a diffusing blade 61 that is rotationally driven by an electric motor, and a diffusing plate 62 whose mounting angle can be changed in three stages. By changing the attachment angle of the diffusion plate 62, the lateral spraying width of the medicine can be set to the first spraying width W1, the second spraying width W2 larger than the first spraying width W1, and the second spraying width W2 larger than the second spraying width W2. It is possible to change to 3 spray widths W3.

The medicine spraying apparatus A is controlled so that every time a preset number of plants are planted by the seedling planting apparatus 20, the feeding section 50 and the diffusion section 60 are driven for a set time to spray the medicine. That is, at the time of planting operation, each time the number of seedlings to be planted in the field reaches the set number, the drug spraying device A is operated to spray the set amount of the drug. As a result, the drug spraying device A sprays a predetermined amount of the drug onto the field scene where the seedlings have been planted.

[About the structure of the support part]
As shown in FIGS. 3 and 5, the supporting portion E includes a main supporting member 70, a first sub supporting member 80 (an example of a sub supporting member), and a second sub supporting member 90 (an example of a sub supporting member). And As shown in FIG. 4, the first auxiliary support member 80 is detachably attached to the right end portion of the main support member 70 with a bolt 81. A second sub-support member 90 is detachably attached to the left end portion of the main support member 70 with a bolt 91.

The main support member 70 is a plate-shaped member that extends in the left-right direction (transverse direction of the machine body). An upper end portion 71 (an example of a temporary support portion) of the main support member 70 at the center portion in the left-right direction has an inverted U-shaped cross section along a plane orthogonal to the left-right direction so as to be engageable with the upper end portion 32a of the bracket 32. Is formed in. When the main body part C is attached to the main support member 70, the upper end part 32 a of the bracket 32 of the main body part C is hooked on the upper end part 71 of the main support member 70 to temporarily support the main body part C on the main support member 70. be able to.

Bolt holes 72, 73, bolt holes 74, 75, and bolt holes 76, 77 are provided in the lower portion of the main support member 70.

The first sub-support member 80 and the second sub-support member 90 are formed by bending a rod-shaped member (a round pipe in the present embodiment). The first sub-support member 80 includes an upper portion 80a extending downward from an upper end thereof, a first intermediate portion 80b connected below the upper portion 80a and extending obliquely rearward and downward, and a lower portion connected below the first intermediate portion 80b. A second intermediate portion 80c that extends and a lower portion 80d that is connected below the second intermediate portion 80c and extends forward are provided. Similarly, the second sub-supporting member 90 is connected below the upper part 90a extending downward from the upper end thereof, the first intermediate part 90b connected below the upper part 90a and extending obliquely rearward and downward, and below the first intermediate part 90b. It is provided with a second intermediate portion 90c extending downward and a lower portion 90d connected below the second intermediate portion 90c and extending forward.

As shown in FIGS. 3 and 5, the first intermediate portion 80b of the first auxiliary support member 80 is located above the first intermediate portion 90b of the second auxiliary support member 90. In other words, the first sub-support member 80 and the second sub-support member 90 have different bending shapes in the machine body front-rear direction. As shown in FIG. 3, the first intermediate portion 80b of the first sub-support member 80 is located below the lower portion of the main body portion C. The first intermediate portion 90b of the second sub supporting member 90 is located above the lower portion of the main body portion C.

A plate-shaped bracket 90e is attached to the rear end portion of the lower portion 90d of the second sub-support member 90 by welding. As shown in FIG. 4, the bracket 90e is detachably attached to the flange portion 21a provided on the upper surface of the transmission case 21 by the bolt 21b. Similarly, a plate-shaped bracket 80e is attached to the rear end of the lower portion 80d of the first sub-support member 80 by welding. The bracket 80e is detachably attached to the flange portion 21a provided on the upper surface of the transmission case 21 by the bolt 21b. As described above, the first sub supporting member 80 and the second sub supporting member 90 are supported by the transmission case 21.

[Attaching the main body to the main support member]
The bracket 32 of the main body C is detachably attached to the main support member 70 by the bolt 32c. Specifically, the two bolts 32c are inserted into the bolt holes 32b of the bracket 32 and screwed into the bolt holes 72, 73 of the main support member 70, the bolt holes 74, 75, or the bolt holes 76, 77. The main body C is attached to the main support member 70.

When the two bolts 32c are screwed into the bolt holes 72 and 73 of the main support member 70, the main body portion C is located at the center of the main support member 70 as shown in FIGS. 5, 6 and 7. To do. When the two bolts 32c are screwed into the bolt holes 76 and 77 of the main supporting member 70, the main body portion C is located at the left end portion of the main supporting member 70, as shown in FIGS. When the two bolts 32c are screwed into the bolt holes 74 and 75 of the main support member 70, the main body portion C is located at the left side of the center of the main support member 70, as shown in FIG.

In other words, the main support member 70 includes the first mounting portion P1 including the bolt holes 72 and 73, the second mounting portion P2 including the bolt holes 76 and 77, and the bolt holes 74 and 75, to which the main body portion C can be mounted. The third mounting portion P3 is provided. The 1st attachment part P1, the 2nd attachment part P2, and the 3rd attachment part P3 are examples of the "attachment part" described in the claim. The first mounting portion P1 is provided in the central portion of the main support member 70 in the left-right direction (transverse direction of the machine body). The second mounting portion P2 is provided at the left end portion of the main support member 70 in the left-right direction. The third mounting portion P3 is provided at an intermediate portion between the first mounting portion P1 and the second mounting portion P2 in the left-right direction of the main support member 70.

[Installation of chemical spraying device to seedling planting device with different number of rows]
Hereinafter, with reference to FIGS. 6 to 10, a state in which the chemical spray device A is attached to the seedling planting device 20 for 8-row, 4-row, 6-row, 10-row, and 5-row planting will be described.

FIG. 6 is a rear view showing the positional relationship between the drug spraying device A, the transmission case 21, and the planting arm 22b when the drug spraying device A is attached to the 8-row seedling planting device 20. The eight-row seedling planting device 20 includes four transmission cases 21A, 21B, 21C, and 21D and eight planting arms 22b.

The first auxiliary support member 80 of the support portion E is attached to the right end portion of the main support member 70 and is supported by the second transmission case 21B from the right. The second sub supporting member 90 of the supporting portion E is attached to the left end portion of the main supporting member 70, and is supported by the third transmission case 21C from the right. In other words, the support portion E is arranged at the center of the seedling planting device 20 in the left-right direction. The main body portion C is attached to the first attachment portion P1 of the main supporting member 70, and is arranged in the central portion of the main supporting member 70 in the left-right direction. As a result, the main body portion C is arranged in the central portion of the seedling planting device 20 in the left-right direction.

By adjusting the mounting angle of the diffusion plate 62 of the chemical spraying device A to set the spraying width to the maximum third spraying width W3, one chemical spraying device A can cover the entire 8 rows of seedlings planted. The drug can be sprayed.

FIG. 7 is a rear view showing the positional relationship between the drug spraying device A, the transmission case 21, and the planting arm 22b when the drug spraying device A is attached to the seedling planting device 20 for four-row planting. The four-row planting planting device 20 includes two transmission cases 21A and 21B and four planting arms 22b.

The first auxiliary support member 80 of the support portion E is attached to the right end portion of the main support member 70 and is supported by the right transmission case 21A. The second sub supporting member 90 of the supporting portion E is attached to the left end portion of the main supporting member 70 and is supported by the left transmission case 21B. In other words, the support portion E is arranged at the center of the seedling planting device 20 in the left-right direction. The main body portion C is attached to the first attachment portion P1 of the main supporting member 70, and is arranged in the central portion of the main supporting member 70 in the left-right direction. As a result, the main body portion C is arranged in the central portion of the seedling planting device 20 in the left-right direction.

By adjusting the mounting angle of the diffusion plate 62 of the chemical spraying device A to set the spraying width to the minimum first spraying width W1, one drug spraying device A can cover the entire 4 rows of seedlings planted. The drug can be sprayed.

FIG. 8 is a rear view showing the positional relationship between the drug spraying device A, the transmission case 21, and the planting arm 22b when the drug spraying device A is attached to the 6-row seedling planting device 20. The seedling planting device 20 for 6-row planting includes three transmission cases 21A, 21B, and 21C and six planting arms 22b.

In the case of 6-row planting, different from the case of 8-row and 4-row planting described above, the first sub-support member 80 of the support portion E is attached to the left end portion of the main support member 70. The first sub-support member 80 is supported by the central transmission case 21B. The second sub supporting member 90 of the supporting portion E is attached to the right end portion of the main supporting member 70 and is supported by the right transmission case 21A. In other words, the support part E is arrange|positioned in the seedling planting apparatus 20 at the right side of the left-right direction. The main body portion C is attached to the second attachment portion P2 of the main supporting member 70, and is arranged at the left end portion of the main supporting member 70 in the left-right direction. As a result, the main body portion C is arranged in the central portion of the seedling planting device 20 in the left-right direction.

By adjusting the mounting angle of the diffusion plate 62 of the chemical spraying device A and setting the spraying width to the intermediate second spraying width W2, one chemical spraying device A can cover the entire 6 rows of seedlings planted. The drug can be sprayed.

FIG. 9 is a rear view showing the positional relationship between the drug spraying device A, the transmission case 21, and the planting arm 22b when the drug spraying device A is attached to the 10-row seedling planting device 20. The 10-row seedling planting device 20 includes five transmission cases 21A, 21B, 21C, 21D, and 21E and ten planting arms 22b.

In the case of 10-row planting, the first sub-supporting member 80 of the support portion E is attached to the left end portion of the main supporting member 70, unlike the case of 8-row and 4-row planting described above. The first sub supporting member 80 is supported by the central transmission case 21C. The second sub supporting member 90 of the supporting portion E is attached to the right end portion of the main supporting member 70, and is supported by the second transmission case 21B from the right. In other words, the support part E is arrange|positioned in the seedling planting apparatus 20 at the right side of the left-right direction. The main body portion C is attached to the second attachment portion P2 of the main supporting member 70, and is arranged at the left end portion of the main supporting member 70 in the left-right direction. As a result, the main body portion C is arranged in the central portion of the seedling planting device 20 in the left-right direction.

By adjusting the attachment angle of the diffusion plate 62 of the chemical spraying device A to set the spraying width to the maximum third spraying width W3, one chemical spraying device A covers the entire 10 rows of seedlings. The drug can be sprayed.

FIG. 10 is a rear view showing the positional relationship between the drug spraying device A, the transmission case 21 and the planting arm 22b when the drug spraying device A is attached to the five-row seedling planting device 20. The five-row planting planting device 20 includes three transmission cases 21A, 21B, and 21C and five planting arms 22b. The central transmission case 21B is provided with one planting arm 22b.

In the case of 5-row planting, unlike the cases of 8-row and 4-row planting described above, the first sub-support member 80 of the support portion E is attached to the left end portion of the main support member 70. The first sub-support member 80 is supported by the central transmission case 21B. The second sub supporting member 90 of the supporting portion E is attached to the right end portion of the main supporting member 70 and is supported by the right transmission case 21A. In other words, the support part E is arrange|positioned in the seedling planting apparatus 20 at the right side of the left-right direction. The main body portion C is attached to the third attachment portion P3 of the main supporting member 70, and is arranged at a position to the left of the center of the main supporting member 70 in the left-right direction. As a result, the main body portion C is arranged in the central portion of the seedling planting device 20 in the left-right direction.

By adjusting the mounting angle of the diffusion plate 62 of the chemical spraying device A to set the spraying width to the minimum first spraying width W1, the single chemical spraying device A covers the entire 10 rows of seedlings. The drug can be sprayed.

As shown in FIG. 8, FIG. 9, and FIG. 10, in the case of 6-row planting, 10-row planting, and 5-row planting, the main body portion C and the left side sub-supporting member are in a state of overlapping in a rear view. When the second sub supporting member 90 is attached to the left end portion of the main supporting member 70, the first intermediate portion 90b of the second sub supporting member 90 and the lower portion of the main body portion C contact and interfere with each other. As described above, in the case of 6-row planting, 10-row planting, and 5-row planting, the first sub-supporting member 80 is attached to the left end portion of the main supporting member 70, and thus the first sub-supporting member 80 The intermediate portion 80b is located below the lower portion of the main body portion C, and contact and interference between the main body portion C and the first sub-support member 80 are avoided.

As described above, in the present embodiment, the main support member 70 includes the three mounting portions (the first mounting portion P1, the second mounting portion P2, and the third mounting portion P3), so that the main support member 70 has eight sections, four sections, and six sections. In the seedling planting device 20 for single-row, ten-row, and five-row planting, the chemical spraying device A can be arranged in the central portion of the seedling planting device 20 in the left-right direction, and a single chemical spraying device A can be used for seedling planting device. The agent can be sprayed throughout the strip where 20 will plant the seedlings.

[Other Embodiments]
[1] In the above embodiment, the example in which the first sub-support member 80 is attached to the right end portion of the main support member 70 and the second sub-support member 90 is attached to the left end portion of the main support member 70 has been described. In the case of the eight-row planting (FIG. 6) and four-row planting (FIG. 7) seedling planting device 20, the main body portion C is located between the first sub-support member 80 and the second sub-support member 90, and is in contact with each other. It is in a position where it does not interfere. Therefore, the arrangement of the first sub-support member 80 and the second sub-support member 90 may be left-right reversed.

In addition, the seedling planting device 20 for 8-row planting includes a main seedling mounting base and a sub-seedling mounting base movable with respect to the main seedling mounting base, and the main seedling mounting base and the sub-seedling mounting base are arranged in the left-right direction. In some cases, the state can be changed between a working state in which the sub-seedling table is separated from the main seedling mounting table and a storage state in which the left and right widths are reduced as compared to the working state. In this case, it is preferable to dispose the second sub supporting member 90 on the side (for example, the left side) where the sub seedling mounting base is located so that the sub seedling mounting base and the support portion E do not interfere in the stored state.

Further, in the above-described embodiment, the example in which the support portion E includes the first sub-support member 80 and the second sub-support member 90 having different shapes has been described, but the support portion E includes two sub-support members having the same shape. You may prepare. For example, the support portion E may include two first sub-support members 80.

[2] In the above embodiment, an example in which the main support member 70 has three mounting portions (first mounting portion P1, second mounting portion P2, third mounting portion P3) has been described, but the number of mounting portions is The number may be one or two, or four or more.

[3] In the above embodiment, the second mounting portion P2 and the third mounting portion P3 are provided on the left side of the first mounting portion P1, but they may be provided on the right side of the first mounting portion P1. However, they may be provided on both sides in the left-right direction of the first mounting portion P1.

[4] In the above-described embodiment, an example in which the first sub-support member 80 and the second sub-support member 90 are round pipes has been described, but the shape is not limited to this, and may be a square pipe or a solid round pipe. It may be a rod or a square rod.

[5] In the above embodiment, an example in which the first sub-support member 80 and the second sub-support member 90 are supported by the transmission case 21 has been described, but the first sub-support member 80 and the second sub-support member 90 are It may be supported by other parts of the seedling planting device 20.

INDUSTRIAL APPLICABILITY The present invention is not limited to a chemical spraying device that sprays a chemical, but can be applied to any spraying device that sprays agricultural materials including fertilizers, removers and the like on a field. Further, the transplanting machine is not limited to the riding type rice transplanter shown in the embodiment, but can be applied to other transplanting machines such as a walking type rice transplanter.

20: seedling planting device 21: transmission case 22a: rotating case 22b: planting arm 70: main support member 71: upper end (temporary support site)
80: First sub-support member (sub-support member)
90: Second sub-support member (sub-support member)
A: Chemical spraying device C: Main body E: Support part P1: First mounting part (mounting part)
P2: Second mounting part (mounting part)
P3: Third mounting part (mounting part)

Claims (7)

A spraying device provided in a transplanter,
A main body for spraying agricultural materials on the field,
A support part attached to the transplanter and supporting the main body part,
The support portion extends in a lateral direction of the body of the transplanter, supports the main body portion, and two sub-support members that are attached to the planting device of the transplanter and support the main support member. A spraying device. The spraying device according to claim 1, wherein the main support member includes a plurality of mounting portions to which the main body portion can be mounted, and the plurality of mounting portions have different positions in the lateral direction of the machine of the transplanter. The first attachment portion of the plurality of attachment portions is provided in a central portion of the main support member in the lateral direction of the body of the transplanter,
The spraying device according to claim 2, wherein the second mounting portion of the plurality of mounting portions is provided at an end portion of the main support member in the lateral direction of the body of the transplanter. The third attachment portion of the plurality of attachment portions is provided in an intermediate portion between the first attachment portion and the second attachment portion of the main support member in the lateral direction of the body of the transplanter. Spraying device according to. The two sub-support members are rod-shaped members, are respectively attached to the ends of the main support member in the lateral direction of the machine body, and have different bending shapes in the machine body front-rear direction from each other. The spraying device according to item 1. The two sub-supporting members are supported by a transmission case that rotatably supports a rotary case having a pair of planting arms at both ends in the planting device of the transplanter.
One of the two auxiliary support members is supported by one of the two adjacent transmission cases, and the other of the two auxiliary support members is supported by the other of the adjacent two transmission cases. Item 5. The spraying device according to item 5. The spraying device according to claim 1, wherein the main support member includes a temporary support portion that can be supported by hooking the main body.

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