Farmland working machine

Abstract

The present application provides a kind of farmland working machine, can reduce the number of molds when manufacturing variable hopper to seek low cost.This farmland working machine of the present application is provided with: a plurality of container unit bodies (41) arranged in a row in the left-right direction;And continuous upper cover body, cover upper surface side throughout the plurality of container unit bodies (41), the side wall portion (41a) of the opposite position of container unit body (41) in the left-right direction is provided with upwardly open upward cutout portion (44) and the connecting portion connecting the container unit body (41) of adjacent position in the left-right direction with each other, the side wall portion (41a) at the outermost end of the left-right direction of the two outermost container unit bodies (41) in the left-right direction in container unit body (41) is formed upward cutout portion (44) by the end cover body (43) with the shape of embedding the upward cutout portion (44) closed.

Description

TECHNICAL FIELD

[0001] The present application relates to a field work machine provided with a hopper and a sequential discharge portion for storing agricultural materials and a ground supply portion for supplying the agricultural materials to a field. BACKGROUND

[0002] As a field work machine provided with a hopper and a sequential discharge portion for storing agricultural materials and a ground supply portion for supplying the agricultural materials to a field, a field work machine having the following configuration has been known in the past.

[0003] That is, the hopper of the agricultural material supply device is formed with a plurality of divided accommodation spaces in the inside thereof according to the number of the ground supply target such as the number of seedling planting rows. Further, the sequential discharge portion and the ground supply portion are provided in correspondence with each of the accommodation spaces (see Patent Document 1).

[0004] In the field work machine described in Patent Document 1, a plurality of divided accommodation spaces are formed in the inside of the hopper according to the number of the ground supply target such as the number of seedling planting rows, and therefore, when the field work machine is adopted in a specification in which the number of the ground supply target such as the number of seedling planting rows is different, a hopper of a different specification is required. Therefore, in order to manufacture hoppers of different specifications, a mold must be additionally prepared, which easily leads to an increase in manufacturing cost. In order to eliminate such a problem, for the hopper, a hopper in which the accommodation space for the agricultural materials is single is manufactured and only the required number of hoppers is used, and the number of molds can be minimized.

[0005] However, if the agricultural materials accommodated in each of the accommodation spaces of the hopper are not consumed at the same time, a place to which the agricultural materials are supplied and a place to which the agricultural materials are not supplied are generated on the field, and a problem in productivity easily occurs. Therefore, it is sought to make the consumption amount of the agricultural materials in each of the accommodation spaces uniform by making each of the accommodation spaces in the hopper communicate with each other at least on the upper half side. In this case, since each of the accommodation spaces in the hopper must be made to communicate with each other, it is difficult to adopt a hopper in which the accommodation space is single.

[0006] PRIOR ART DOCUMENTS

[0007] PATENT DOCUMENTS

[0008] Patent Document 1: Japanese Patent Application Publication No. 2019-170209 SUMMARY

[0009] PROBLEMS TO BE SOLVED BY THE INVENTION

[0010] The present application provides a field work machine in which the number of molds can be reduced when a hopper of a variable specification is manufactured, and low cost is sought.

[0011] Solution to a problem

[0012] The agricultural field working machine according to the present application is characterized by including an agricultural material supply device that supplies an agricultural material to an agricultural field, the agricultural material supply device including: a hopper that is mounted on a traveling body and stores the agricultural material; a sequential discharge portion that sequentially discharges the agricultural material from the hopper in a prescribed amount; and a ground supply portion that sends the sequentially discharged agricultural material to the agricultural field, the hopper including: a plurality of container unit bodies that are arranged in a row in a left-right direction; and a continuous upper cover body that covers an upper surface side of the plurality of container unit bodies, an upward-facing notch portion that is open upward is formed in a side wall portion at positions of the container unit bodies that are opposite to each other in the left-right direction in such a manner that internal spaces of the container unit bodies communicate with each other, and the connecting portion that connects the container unit bodies at adjacent positions in the left-right direction to each other is provided in the side wall portion in which the upward-facing notch portion is formed, and the upward-facing notch portion that is formed in the side wall portion at a left-right outermost end of the container unit bodies that are located at both left-right outermost sides in the left-right direction is closed by an end cover body that has a shape that fits into the upward-facing notch portion.

[0013] According to the present application, an upward-facing notch portion that is open upward is formed in a side wall portion at positions of the container unit bodies that are opposite to each other in the left-right direction, and the connecting portion that connects the container unit bodies at adjacent positions to each other is provided in the side wall portion in which the upward-facing notch portion is formed. Thus, the internal spaces of the container unit bodies at adjacent positions communicate with each other. Moreover, the upward-facing notch portion that is formed in the side wall portion at a left-right outermost end of the container unit bodies that are located at both left-right outermost sides in the left-right direction is closed by the end cover body that has a shape that fits into the upward-facing notch portion, so that the internal spaces of the container unit bodies can communicate with each other while preventing the agricultural material from leaking out of the hopper as a whole.

[0014] The upper cover body that covers the upper surface side of the container unit bodies is not provided for each container unit body, but is a continuous upper cover body that covers the upper surface side of the plurality of container unit bodies. This is to prevent the following situation: the divided accommodation spaces in the respective container unit bodies are close to each other and are connected at the upper portions, so that if a cover body is provided on the upper side of each container unit body, a structure for sealing the adjacent cover bodies from each other is required.

[0015] According to the present structure, instead of using a hopper configured to have a required number of divided accommodation spaces formed inside, a configuration in which one container unit body is connected to another container unit body to have a required number of accommodation spaces on the outermost side can be used. Further, by closing the end cover body by fitting it into the upwardly cut portion of the side wall portion formed on the outermost end and covering the upper surface side of the entire plurality of container unit bodies with a continuous upper cover body, a hopper having a required number of accommodation spaces can be configured. As a result, when the hopper is of a specification in which the number of divided accommodation spaces is different, the specification can be easily changed by changing the number of connections between the container unit bodies.

[0016] Thus, a farm work machine that can reduce the number of molds when manufacturing a hopper of a variable specification to seek cost reduction is obtained.

[0017] In the present invention, it is preferable that the plurality of container unit bodies are each formed in the same shape as each other.

[0018] According to the present structure, the plurality of container unit bodies are each formed in the same shape, and thus, it is effective in reducing the number of molds by generalization.

[0019] In the present invention, it is preferable that the connection portion is configured such that, at the side wall portion at the position opposite to each other of the container unit bodies at adjacent positions in the left-right direction, the lower edge portion of the upwardly cut portion of the other container unit body is fitted into the upper edge portion of the upwardly cut portion of the one container unit body in the up-down direction, thereby restricting horizontal relative movement of the container unit bodies.

[0020] According to the present structure, the connection portion provided at the side wall portion at the position opposite to each other of the container unit bodies at adjacent positions is configured such that the lower edge portion of the upwardly cut portion of the other container unit body is fitted into the upper edge portion of the upwardly cut portion of the one container unit body in the up-down direction, and thus, the connection portion that restricts horizontal relative movement of the container unit bodies can be easily formed at the same time in the manufacturing process of the container unit bodies. Therefore, compared to the case in which the connection portion is additionally provided, the manufacturing cost and the working hours can be reduced.

[0021] In the present invention, it is preferable that, in the end cover body, one end side fitting portion that fits into the shape of the upwardly cut portion formed on the outermost end on one side in the left-right direction and the other end side fitting portion that fits into the shape of the upwardly cut portion formed on the outermost end on the other side in the left-right direction are formed on both the front surface and the back surface of the end cover body.

[0022] According to the present structure, the one end side fitting portion and the other end side fitting portion are formed on both the front surface and the back surface of the common end cover, and thus, the end cover is not divided into an end cover having the one end side fitting portion and an end cover having the other end side fitting portion, and is not manufactured by different molds. Therefore, the end cover can be manufactured by a single mold, and the number of molds can be reduced.

[0023] In the present application, it is preferable that a hinge that links the upper cover body to a position opposite to the upper portion of the container unit body in a swingable manner is attached.

[0024] According to the present structure, the long upper cover body and the plurality of container unit bodies are linked by the hinge for swingably linking the upper cover body, and the hinge and the upper cover body can also function as a device for linking the upper portions of the plurality of container unit bodies to each other.

[0025] In the present application, it is preferable that a conveying hose that conveys the agricultural materials is attached between the successive discharge portion and the ground supply portion, and the conveying hose is connected by a one-touch connection mechanism that can be attached and detached by one-touch operation in the middle of the conveying path from the successive discharge portion to the ground supply portion.

[0026] According to the present structure, the attachment and detachment of the conveying hose in the middle of the conveying path is easily and quickly performed by using the one-touch connection mechanism.

[0027] In the present application, it is preferable that the conveying hose connected to the successive discharge portion that successively discharges the agricultural materials from the container unit body located at the center in the left-right direction is configured to be attached and detached at a position closer to the successive discharge portion than the ground supply portion.

[0028] According to the present structure, the attachment and detachment of the conveying hose connected to the successive discharge portion that successively discharges the agricultural materials from the container unit body located at the center in the left-right direction is easily performed in the farmland working machine in which the ground working device having a wide width in the left-right direction is linked.

[0029] That is, even in a position where it is difficult to perform the attachment and detachment work by extending the hand from the left-right direction end portion of the ground working device on the farmland, since the attachment and detachment position of the conveying hose is a position closer to the successive discharge portion than the ground supply portion, the attachment and detachment work can be performed by extending the hand from the traveling body, and the attachment and detachment of the conveying hose is easily performed.

[0030] In the present application, it is preferable that the successive discharge portion is provided for each of the container unit bodies, and a pair of the conveying hoses in the left-right direction is connected to each of the successive discharge portions.

[0031] According to the present structure, it is easy to reduce the connection error of the successive discharge portion and the delivery hose. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a whole side view of a ride-on rice transplanter.

[0033] Figure 2 is a whole plan view of a ride-on rice transplanter.

[0034] Figure 3 is a rear view showing a fertilizer application device.

[0035] Figure 4 is Figure 3 is a cross-sectional view taken along line IV-IV in

[0036] Figure 5 is Figure 3 is a cross-sectional view taken along line V-V in

[0037] Figure 6 is a perspective view showing a container unit body of a hopper.

[0038] Figure 7 is a perspective view showing a state in which a plurality of container unit bodies are connected.

[0039] Figure 8 is a longitudinal sectional view along the left-right direction showing the outermost container unit body and a container unit body adjacent to the container unit body.

[0040] Figure 9 is a partial sectional view showing a connection structure of a delivery hose in a delivery path.

[0041] Figure 10 is a partial sectional view showing an automatic closing structure of a delivery hose in a delivery path.

[0042] REFERENCE SIGNS

[0043] 4: agricultural material supply device;

[0044] 40: hopper;

[0045] 41: container unit body;

[0046] 41a: side wall portion;

[0047] 41b, 41c: connection portion;

[0048] 42: upper cover body;

[0049] 43: end cover body;

[0050] 43a: one-end-side fitting portion;

[0051] 43b: another end side fitting portion;

[0052] 44: upward cutout portion;

[0053] 45: hinge;

[0054] 50: successive discharge portion;

[0055] 51: delivery hose;

[0056] 52: one-touch connection mechanism;

[0057] 65: ground engaging portion. DETAILED DESCRIPTION

[0058] Hereinafter, one example of an embodiment of the present application will be described based on the drawings.

[0059] Note that, unless otherwise specified, the front-rear direction and the left-right direction in the description of the present embodiment are as follows. That is, in the field operation machine to which the present application is applied, the advancing direction of the advancing side of the traveling body when the traveling body is operated (refer to the arrow F in Figure 1 , 2 , the advancing direction of the retreating side (refer to the arrow B in Figure 1 , 2 , the direction corresponding to the right side (refer to the arrow R in Figure 2 , and similarly, the direction corresponding to the left side (refer to the arrow L in Figure 2 .

[0060] [Overall structure of field operation machine]

[0061] Figure 1 is a side view showing the overall configuration of a riding-type transplanter as the field operation machine of the present application. Figure 2 is a plan view showing the overall configuration of the riding-type transplanter.

[0062] As shown in Figure 1 , Figure 2 , the riding-type transplanter is configured to perform self-propelled travel with a left and right pair of front wheels 1F, 1F that are steered as desired provided at the front portion of the traveling body 1 and a left and right pair of rear wheels 1R, 1R as drive wheels provided at the rear portion of the traveling body 1.

[0063] Power from an engine 20 provided at the front portion of the traveling body is transmitted to the rear wheels 1R, 1R. The power of the engine 20 is also transmitted to the fertilizer device 4 described later mounted at the rear portion of the traveling body 1 and the seedling transplanting device 6 as the ground operation device connected to the rear portion of the body frame 10 of the traveling body 1 via the link mechanism 11 that is oscillated up and down as desired.

[0064] The traveling body 1 has a driver's section 3 on the rear side of the power section 2. The driver's section 3 is configured so that a driver's seat 32 is provided on the rear side of a driver's floor 30 on which a steering section 31 having a steering wheel 31a and the like is provided on the front side, and a driver can get on the driver's section 3 to perform steering. A step 35 for use when getting on and off from the ground is provided on the lower side of both lateral ends of the driver's floor 30.

[0065] As shown in FIG. 1, the driver's floor 30 is provided with a step 35 for use when getting on and off from the ground on the lower side of both lateral ends. Figure 2 As shown in FIG. 1, side steps 22 connected to the front side of the driver's floor 30 are provided on both sides of the engine cover 21 in which the engine 20 is housed in the power section 2. The driver's section 3 is configured so that getting on from the front side of the traveling body 1 is possible by the side steps 22.

[0066] As shown in FIG. 1, the driver's floor 30 is provided with a step 35 for use when getting on and off from the ground on the lower side of both lateral ends. Figure 1 Figure 2 As shown in FIG. 1, a preliminary seedling placement table 12 is provided on the lateral outer sides of the side steps 22 on the front side of the traveling body 1.

[0067] A marker 24 is also provided on both lateral sides of the front side of the traveling body. The marker 24 is supported in a folded storage posture in which the marker 24 is folded upward along the front-rear direction of the traveling body 1 and upward in FIG. 1, but is used in a posture in which the top end side folded upward is extended horizontally and outward in the lateral direction of the traveling body 1 when marking a line as a traveling index on a farm field. Figure 1 Figure 2 As shown in FIG. 1, the driver's floor 30 is provided with a step 35 for use when getting on and off from the ground on the lower side of both lateral ends.

[0068] As shown in FIG. 1, the driver's floor 30 is provided with a step 35 for use when getting on and off from the ground on the lower side of both lateral ends. Figure 2 As shown in FIG. 1, the driver's floor 30 is provided with a step 35 for use when getting on and off from the ground on the lower side of both lateral ends.

[0069] More specifically, the lateral direction width of the narrow portion 33 is the same as or slightly wider than the distance between the outermost sides of the side steps 22 provided on both sides of the power section 2. The width of the wide portion 34 is set to be wider than the lateral direction width of the hopper 40 of the fertilizer device 4 provided on the back of the driver's seat 32, and is not more than the lateral direction width of the seedling placement portion 60a of the seedling transplanting device 6 having a ten-row amount.

[0070] [Seedling Transplanting Device] ​​

[0071] As shown in Figure 1 , Figure 2 , a seedling transplanting device 6, which is an example of an earth-working device, is coupled to the rear end portion of the link mechanism 11.

[0072] The front end portion of a transplanting frame 61 of the seedling transplanting device 6 is coupled to the rear end portion of the link mechanism 11. The seedling transplanting device 6 is configured for ten-row transplanting and has ten seedling transplanting mechanisms 62 arranged in a row in the lateral direction of the traveling body and fitted to the rear portion of the transplanting frame 61, a seedling carrying table 60 provided above the transplanting frame 61, and five ground-contacting floats 63 fitted to the lower portion of the transplanting frame 61 in the lateral direction of the traveling body.

[0073] The seedling carrying table 60 has ten seedling placement portions 60a arranged in the lateral direction of the traveling body and configured to place mat-shaped seedlings. The seedling carrying table 60 is configured to be supported by a support member provided to the transplanting frame 61 and to be able to reciprocate freely in the lateral direction of the body. The seedling carrying table 60 is reciprocally transported in conjunction with the seedling transplanting movement of the seedling transplanting mechanisms 62 and supplies seedlings from the seedling placement portions 60a to the respective seedling transplanting mechanisms 62.

[0074] A chemical dispersing device 64 for dispersing chemicals to farmland after seedling transplanting is provided to the rear portion of the seedling transplanting device 6.

[0075] Each ground-contacting float 63 contacts the surface of the farmland in the lowered working state of the seedling transplanting device 6 to support the seedling transplanting device 6 in such a manner that the seedling transplanting depth of each seedling transplanting mechanism 62 reaches a prescribed depth and to perform land preparation at the seedling transplanting site of the seedling transplanting mechanism 62.

[0076] Each ground-contacting float 63 is fitted with a furrow opener 65 for excavating a furrow for guiding and burying the fertilizer supplied from the fertilizer device 4 into the soil.

[0077] [Chemical Dispensing Device]

[0078] A fertilizer device 4, which is an example of an agricultural material dispensing device, is provided to the ride-on type rice transplanter.

[0079] The fertilizer device 4 has a hopper 40 for storing a powder fertilizer, which is an example of an agricultural material, a sequential discharge portion 50 for sequentially discharging the stored fertilizer from the hopper 40 in prescribed amounts, and a furrow opener 65, which is a ground dispensing portion, for sending the sequentially discharged fertilizer to the farmland.

[0080] The hopper 40 is provided at the rear end portion of the traveling body 1 in a state of being arranged in a row in the left-right direction with five container unit bodies 41 having powder fertilizer containing spaces, and is arranged at the rear end portion of the traveling body 1 in a state of being located at the back side of the driver's seat 32. A successively discharging portion 50 is provided at the lower portion of each container unit body 41. The fertilizer successively discharged from the successively discharging portion 50 is sent to the furrow opener 65 provided at the seedling transplanting device 6 via a delivery hose 51, and is supplied to the furrow formed in the farmland.

[0081] As shown in Figures 3 to 6 the lower periphery of each container unit body 41 arranged in the left-right direction is connected by a continuous link frame 13, and the relative positions of the container unit bodies 41 to each other are fixed.

[0082] The successively discharging portion 50 provided at the bottom surface side of each container unit body 41 is supported by a support frame 14 provided on the body frame 10.

[0083] The successively discharging portion 50 is connected with the delivery hose 51 for sending the successively discharged fertilizer to the furrow opener 65 side and the air blowing device 36 for sending the fertilizer to the furrow opener 65 side by using wind power.

[0084] The air blowing device 36 is provided with: an electric blower 37 (corresponding to a blower) for blowing air, a delivery duct 38a located on a supply path for sending the fertilizer to the seedling transplanting device 6 side, a discharge duct 38b (corresponding to a discharge path) constituting a discharge path for taking out the remaining fertilizer to the outside, and a suction duct 38c for taking in outside air heated and dried in the power unit 2 into the electric blower 37.

[0085] The successively discharging portion 50 is provided with a successively discharging mechanism constituted by a successively discharging roller 53 and the like in an outer casing 52, and is configured to successively discharge the fertilizer supplied from each container unit body 41 in a prescribed amount to the lower side and send it to the delivery hose 51 side with high-pressure delivery air supplied from the delivery duct 38a.

[0086] The successively discharging portion 50 is provided for each container unit body 41, and two delivery hoses (51) are connected to each successively discharging portion 50. The fertilizer is sent to the ten furrow openers 65 provided at the seedling transplanting device 6 from the ten delivery hoses (51) connected to the five successively discharging portions 50.

[0087] [Configuration of Hopper]

[0088] The configuration of the hopper 40 will be described.

[0089] As shown in Figures 3 to 8As shown, the hopper 40 includes: five transparent resin container units 41 with a capacity S1 for storing two rows of fertilizer; a continuous upper cover 42 covering the upper surface of the five container units 41; and two end caps 43, 43 having an upward cutout 44 formed at the side wall portion 41a of the two outermost container units 41, 41 in the left and right directions.

[0090] like Figures 6 to 8 As shown, an upward cutout 44 is formed in the container unit 41 to allow adjacent container units 41 in the left-right direction to communicate with each other in the upper part of the accommodating space S1. The upward cutout 44 is cut in such a way that the side wall portion 41a of the container unit 41 opposite in the left-right direction is partially open to the upper side near the upper part of the side wall portion 41a.

[0091] Furthermore, the side wall portion 41a, which has an upward cutout portion 44, is provided with connecting portions 41b and 41c that connect container units 41 that are adjacent in the left and right directions.

[0092] Connecting portions 41b and 41c constitute a connecting structure that restricts the horizontal relative movement of container units 41 located at adjacent positions in the left-right direction. In this structure, the lower edge of the upward cut-out portion 44 formed at the side wall portion 41a of one of the container units 41 located at an adjacent position in the left-right direction is slightly bent laterally outward to form a rib-shaped first connecting portion 41b. Moreover, the lower edge of the upward cut-out portion 44 formed at the side wall portion 41a of the other container unit 41 located at an adjacent position in the left-right direction is bent laterally outward in a manner that wraps around the rib-shaped portion of the first connecting portion 41b from above to form a second connecting portion 41c that is formed in the shape of an inverted U.

[0093] Thus, the configuration restricts the horizontal relative movement of container units 41 at adjacent positions from each other by embedding the first connecting portion 41b and the second connecting portion 41c from the vertical direction.

[0094] The multiple container units 41 are each formed in the same shape as each other, and the upward cutout 44 and the connecting parts 41b and 41c are also formed in the same shape as each other.

[0095] End cap 43 Figure 4 , Figure 5 and Figure 7 , Figure 8As shown, the end cap 43 has a front and a back surface, on which a one-end fitting portion 43a is formed, which is in the shape of an upward cut portion 44 formed on the outermost end of the sidewall portion 41a in the left-right direction, and a other-end fitting portion 43b is formed, which is in the shape of an upward cut portion 44 formed on the outermost end of the other side in the left-right direction.

[0096] That is, an end-side fitting portion 43a is formed on the front side of the end cover 43, and another end-side fitting portion 43b is formed on the back side of the end cover 43. Figure 7 The following state is shown: On one end side of the hopper 40, i.e., the right end side, the end-side fitting portion 43a formed on the front of the end cover 43 is about to be inserted into the upward-facing cutout portion 44 of the sidewall portion 41a formed on the outermost end of the right side. Furthermore, Figure 7 The following state is shown: on the other end side of the hopper 40, that is, the left end side, the end side fitting portion 43a formed on the back of the end cover 43 is about to be inserted into the upward cut portion 44 of the side wall portion 41a formed on the outermost end of the left side.

[0097] Figure 4 The following state is shown: On the left end side of the hopper 40, an end-side fitting portion 43a formed on the back side of the end cover 43 is inserted into the inner side of the first connecting portion 41b and is attached to the upward cut portion 44 of the side wall portion 41a formed on the outermost end of the left side.

[0098] Figure 5 The following state is shown: On the right end side of the hopper 40, one end side fitting portion 43a formed on the back of the end cover 43 is embedded in the outside of the second connecting portion 41c and is attached to the upward cut portion 44 of the side wall portion 41a formed on the outermost end of the left side.

[0099] Near the upper rear end of each container unit 41 of the hopper 40, there is an assembly part 46 for connecting the upper cover 42 in a swingable manner with a hinge 45. In addition, near the upper front end of the container unit 41, there is a locking part 48 for locking a hook 47 provided in the upper cover 42 at the end opposite to the side where the hinge 45 is provided.

[0100] [Connection of the hose]

[0101] like Figure 9 and Figure 10 As shown, the conveying hose 51 that forms the fertilizer conveying path between the continuous discharge section 50 and the furrow opener 65 is configured to be detached and reattached via a known one-touch connection mechanism 54 that can be detached and reattached by one-touch operation.

[0102] The one-touch connection mechanism 54 is provided with an outer cylinder portion 55 and an inner cylinder portion 56 between the end of the upstream side portion 51a of the delivery hose 51 and the end of the downstream side portion 51b of the delivery hose 51, and is configured to be able to be disassembled by one-touch operation by sliding operation of the outer cylinder portion 55 with respect to the inner cylinder portion 56.

[0103] That is, it is possible to switch between the connected state and the disengaged state by disassembling the ball member 55a provided in the outer cylinder portion 55 at the end of the upstream side portion 51a to the annular recessed portion 56a provided at the end of the downstream side portion 51b. The ball member 55a is a steel ball, and the annular recessed portion 56a is formed of a resin molded piece that can be elastically deformed to some extent, so by sliding operation of the outer cylinder portion 55 with respect to the inner cylinder portion 56, the steel ball is disassembled by climbing over the protrusions before and after the annular recessed portion 56a.

[0104] In the above-described one-touch connection mechanism 54, the attachment position of the delivery hose 51 that constitutes the fertilizer delivery path between the sequential discharge portions 50 and the furrow opener 65 differs between the position near the outer side in the left-right direction and the vicinity of the center.

[0105] That is, for the delivery hose 51 that constitutes the fertilizer delivery path between the sequential discharge portion 50 located at the outermost side in the left-right direction and the sequential discharge portion 50 adjacent to the outer side thereof, the one-touch connection mechanism 54 is provided at a position near the furrow opener 65 provided to the seedling planting device 6 in the length direction of the delivery path, and is configured to be able to be operated at a lower position in order to be able to extend a hand from the lateral outer side of the seedling planting device 6 to perform disassembly operation.

[0106] Further, for the delivery hose 51 connected to the sequential discharge portion 50 at the center where the fertilizer is sequentially discharged from the container unit body 41 at the center in the left-right direction, the one-touch connection mechanism 54 is not provided at a position near the furrow opener 65 provided to the seedling planting device 6, but at a position of the sequential discharge portion 50 closer to the center than the furrow opener 65.

[0107] The large-sized ride-on type rice transplanter having a large number of seedling planting rows has difficulty in extending a hand from the lateral outer side of the seedling planting device 6 to perform disassembly operation of the one-touch connection mechanism 54, so the one-touch connection mechanism 54 is provided at a position closer to the center than the furrow opener 65 at the sequential discharge portion 50 at the center in the left-right direction, and is configured to be able to be operated by extending a hand from the rear of the traveling vehicle body 1 rearward in the state of riding on the traveling vehicle body 1.

[0108] Furthermore, a closing mechanism 57 is provided at the location where the one-touch connection mechanism 54 is disassembled or assembled. This closing mechanism 57 is used to automatically close the end opening of the downstream portion 51b after the upstream portion 51a of the delivery hose 51 has been removed.

[0109] like Figure 9 and Figure 10 As shown, the closure mechanism 57 includes: a swing cover member 58 supported in a manner that allows it to swing up and down about a horizontal axis p1; and a helical spring 59 that elastically applies force to the swing cover member 58 about the horizontal axis p1 toward the side where the delivery hose 51 is located.

[0110] Through this construction, in such Figure 9 With the upstream portion 51a and the downstream portion 51b connected, the swing cover member 58 is supported by being gently pressed against the side of the delivery hose 51. When the upstream portion 51a is removed, the swing cover member 58 swings about the horizontal axis p1 and comes into contact with the end opening of the downstream portion 51b, thus closing the end opening.

[0111] [Other Implementation Methods]

[0112] Other embodiments will be described below. Multiple embodiments described below can be combined as long as they do not conflict. It should be noted that the scope of this invention is not limited to these embodiments.

[0113] (1) In the above embodiment, powdered fertilizer was shown as an example of agricultural material, but it is not limited to this. For example, pesticides or rice seeds can also be used. When rice seeds are used as agricultural material, it is preferable to prepare a seedling transplanting device 6 that can be disassembled for transplanting seedlings.

[0114] Other structures can use the same structure as the above-described implementation method.

[0115] (2) In the above embodiment, an example is shown in which connecting portions 41b and 41c are provided in the side wall portion 41a of adjacent container units 41 where an upward cutout 44 is formed, connecting container units 41 in adjacent positions in the left-right direction to each other. However, this structure is not necessarily limited to this. For example, the location where the connecting portions 41b and 41c are provided is not limited to the location where the upward cutout 44 is formed. Connecting portions 41b and 41c that connect opposite side wall portions 41a to each other may also be provided.

[0116] Other structures can use the same structure as the above-described implementation method.

[0117] (3) In the above embodiment, the configuration in which the end cover 43 has the one end side fitting portion 43a and the other end side fitting portion 43b formed on the front surface and the back surface of the end cover 43 is exemplified, but is not necessarily limited to this configuration. For example, the end cover 43 having the one end side fitting portion 43a and the end cover 43 having the other end side fitting portion 43b can be provided separately.

[0118] Other configurations can employ the same configuration as the above embodiment.

[0119] (4) In the above embodiment, the example in which all the container unit bodies 41 constituting the hopper 40 are configured in the same configuration is shown, but is not necessarily limited to this configuration. For example, a part of the container unit bodies 41 can be configured in the same configuration.

[0120] Other configurations can employ the same configuration as the above embodiment.

[0121] Industrial Applicability

[0122] The present application is not limited to a rice transplanter, but can also be applied to a direct seeding machine, a vegetable transplanting machine, a fertilizer applicator, a pesticide applicator, and the like in a farmland.

Claims

1. An agricultural field working machine characterized by comprising: an agricultural material supply device that supplies an agricultural material to an agricultural field, the agricultural material supply device comprising: a hopper that is mounted on a traveling body and stores the agricultural material; a sequential discharge portion that sequentially discharges the agricultural material from the hopper in a prescribed amount; and a ground supply portion that sends the agricultural material sequentially discharged to the agricultural field, the hopper comprising: a plurality of container unit bodies arranged in a row in a left-right direction; and a continuous upper cover body that covers an upper surface side of the plurality of container unit bodies, side wall portions of the container unit bodies at positions opposite each other in the left-right direction are formed with upward-facing cutout portions that open upward and communicate internal spaces of the container unit bodies with each other, the side wall portions in which the upward-facing cutout portions are formed are provided with connecting portions that connect the container unit bodies at adjacent positions in the left-right direction to each other, the upward-facing cutout portion formed at the side wall portion of an outermost end in the left-right direction of the container unit body located at both outermost sides in the left-right direction is closed by an end cover body having a shape that fits into the upward-facing cutout portion, and the end cover body is formed with one end side fitting portion that fits into a shape of the upward-facing cutout portion formed at an outermost end in one of the left-right directions and another end side fitting portion that fits into a shape of the upward-facing cutout portion formed at an outermost end in the other of the left-right directions, the one end side fitting portion and the other end side fitting portion being formed on both a front surface and a back surface of the end cover body.

2. The agricultural field working machine according to claim 1, characterized in that the plurality of container unit bodies are each formed in the same shape as each other.

3. The agricultural field working machine according to claim 1 or 2, characterized in that the connecting portions adopt a linking structure in which side wall portions at positions opposite each other of the container unit bodies at adjacent positions in the left-right direction have lower edge portions of the upward-facing cutout portions of one of the container unit bodies fit into upper edge portions of the upward-facing cutout portions of the other of the container unit bodies from a top-bottom direction, thereby restricting horizontal direction relative movement of the container unit bodies to each other.

4. The agricultural field working machine according to claim 1 or 2, characterized in that a hinge that links an upper portion of the container unit body and the upper cover body at a position opposite the upper portion of the container unit body in a swingable open-close manner is attached.

5. The agricultural field working machine according to claim 1 or 2, characterized in that a delivery hose that can deliver the agricultural material is fitted between the sequential discharge portion and the ground supply portion, and the delivery hose is connected via a one-touch connection mechanism that can be attached and detached by one-touch operation in a delivery path of the delivery hose midway from the sequential discharge portion to the ground supply portion.

6. The agricultural field working machine according to claim 5, characterized in that the delivery hose connected to the sequential discharge portion that sequentially discharges the agricultural material from the container unit body located at a center in the left-right direction is configured to be attachable and detachable at a position closer to the sequential discharge portion than the ground supply portion.

7. The agricultural field working machine according to claim 5, characterized in that ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The successive discharge portions are provided per unit of the containers, A pair of left and right delivery hoses are connected to each of the successive discharge portions.

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