Paddy field working machine

Abstract

To provide a paddy field working machine capable of reliably removing removal targets such as golden apple snails.SOLUTION: A paddy field working machine comprises a collecting mechanism 7 that is attached to a vehicle body and collects a removal target present in an agricultural field. The collecting mechanism 7 has a collecting frame part 70 and a collecting part 71 held by the collecting frame part 70. The collecting part 71 is formed of a plurality of linear members having elasticity. The collecting part 71 is disposed in front of a seedling planting rod and a float. The height of the collecting part 71 is adjustable.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a paddy field working machine equipped with a recovery unit that recovers objects to be removed, such as giant snails. [Background technology]

[0002] When targeting pests in a field, such as giant apple snails (Pomacea canaliculata) and other harmful insects, conventional techniques have been known to spray chemicals on the field to kill them and prevent damage.Also, techniques have been known to physically exterminate the pests. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2023-91941 [Patent Document 2] Patent Publication No. 2020-110112 [Patent Document 3] Patent Publication No. 2024-7700 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is a problem that it is difficult to eradicate with a small amount of chemicals, and if too much is used, it may have a negative impact on the field.

[0005] On the other hand, physical trampling may not be able to kill (eliminate) pests if the field is soft. There is also the problem that pests cannot be exterminated and collected from the field while farming work is being carried out.

[0006] SUMMARY OF THE INVENTION In consideration of the above-mentioned problems of the conventional technology, the present invention aims to provide a paddy field working machine that can reliably remove objects to be removed, such as giant snails. [Means for solving the problem]

[0007] The first aspect of the present invention is A recovery mechanism is attached to the vehicle body and recovers materials to be removed that are present in the field, the collection mechanism includes a collection frame and a collection unit held by the collection frame; the collection portion is a plurality of elastic linear members, The recovery section is disposed forward of the seedling planting rod and the float, This paddy field working machine is characterized in that the height of the collection section can be adjusted.

[0008] The second aspect of the present invention is The plurality of linear members form an internal space, The distance between the plurality of linear members is adjustable in accordance with the object to be removed, This is the first paddy field working machine of the present invention, in which the maximum spacing between adjacent linear members when collecting the object to be removed is narrower than the size of the object to be removed, and when the object to be removed is pressed against the linear members, the spacing between the elastic linear members widens, allowing the object to be removed to pass through into the internal space.

[0009] The third aspect of the present invention is the recovery frame portion has a pair of flange portions at least a predetermined distance apart, and both ends of the plurality of linear members in a parallel state are respectively connected to the inside of the pair of flange portions; The predetermined distance between the pair of flange portions is configured to be changeable, In the paddy field working machine of the first or second invention, when the object to be removed is discharged from the internal space to the outside, the specified distance between the pair of flange portions is shortened compared to when it was retrieved, thereby widening the spacing between the multiple linear members that are in parallel, and discharging the object to be removed that has been taken into the internal space to the outside. [Effects of the Invention]

[0010] According to the first aspect of the present invention, it is possible to reliably remove objects to be removed, such as giant pond snails.

[0011] The second aspect of the present invention makes it possible to flexibly accommodate various sizes of objects to be removed.

[0012] According to the third aspect of the present invention, the object to be removed can be easily discharged. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a side view of a paddy field working machine according to an embodiment of the present invention; [Figure 2] Plan view of the paddy field farming machine [Figure 3] FIG. 10 is a perspective view showing a recovery mechanism provided in the paddy field working machine. [Figure 4] FIG. 10 is a perspective view showing a recovery mechanism provided in the paddy field working machine. [Figure 5] (A), (B), and (C) are perspective views showing a recovery mechanism provided in the paddy field working machine. [Figure 6] Plan view of the ground leveling rotor mechanism [Figure 7] Side view of the ground leveling rotor mechanism [Figure 8] 1 is a plan view of an example of a ground leveling rotor mechanism; [Figure 9] 1 is a plan view of an example of a ground leveling rotor mechanism; [Figure 10] 1 is a side view of an example of a ground leveling rotor mechanism; [Figure 11] (A) Side view of the paddy field farming machine, (B) Plan view of the control panel [Figure 12] Side view of paddy field farming machine [Figure 13] Side view of paddy field farming machine [Figure 14] 1 is a plan view of an example of a ground leveling rotor mechanism; [Figure 15] 1 is a plan view of an example of a ground leveling rotor mechanism; DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0015] 1 is a configuration diagram of a rice transplanter as an example of a paddy field working machine according to an embodiment of the present invention. In the following, the forward / backward and left / right directions are defined based on the traveling direction of the rice transplanter.

[0016] FIG. 1 is a side view of a paddy field working machine according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.

[0017] Here, a seedling planting device 2 for planting seedlings is attached to the rear of the vehicle body 1, and a spare seedling frame 3 for placing spare seedlings is attached to the front. A driver's seat 4 is located in the center, and the vehicle can travel on front wheels 5 and rear wheels 6.

[0018] A recovery mechanism 7 for recovering objects to be removed W present in the field, such as giant pond snails, is installed at the bottom of the seedling planting device 2. The recovery mechanism 7 has a recovery frame part 70 attached to the main body 2a of the seedling planting device 2 and a recovery part 71 held by the recovery frame part 70.

[0019] This recovery mechanism 7 is realized by utilizing a conventional ground leveling rotor mechanism, as will be described later.

[0020] Figure 3 is an enlarged perspective view of the recovery frame 70 and recovery unit 71 of the recovery mechanism 7. This recovery unit 71 has a plurality of linear members 71a, 71a, ... such as wires arranged in parallel, and these linear members 71a collectively form a spindle or bicone shape, with a space S formed inside. There are a plurality of recovery units 71, and they are provided on the recovery frame 70. The linear members 71a are elastic.

[0021] As shown in Fig. 4, the recovery frame 70 has at least a pair of flanges 70a, 70a spaced apart by a predetermined distance D. A plurality of linear members 71a are arranged between the pair of flanges 70a, 70a, and both ends of the linear members 71a are connected to the pair of flanges 70a, 70a, respectively. Reference numeral 10 denotes a transmission shaft that transmits driving power from the vehicle body 1 and is connected to the shaft 70d.

[0022] The intervals K, K, ... (see FIG. 3) between the adjacent linear members 71a in this parallel state can be adjusted according to the object to be removed W. For example, when the ends of the linear members 71a are connected to the flange portion 70a, the flange portion 70a has a large number of circular holes drilled inside it, and the intervals K can be adjusted by selecting whether to fit every other end of the linear members 71a or every third end of the linear members 71a.

[0023] When the objects to be removed W are being collected, the maximum of the intervals K between the parallel linear members 71a is narrower than the size of the objects to be removed W. The intervals K between the linear members 71a vary depending on the location of the linear members 71a, but here even the widest interval K is narrower than the size of the objects to be removed W. As will be described later, this is to prevent the objects to be removed W, once taken into the internal space S, from spilling out to the outside.

[0024] Next, when the object to be removed W is pressed against the plurality of linear members 71a, the intervals K between the elastic linear members 71a widen, allowing the object to be removed W to pass through from there into the internal space S.

[0025] On the other hand, the flange portions 70a are slidable on the shaft 70d, and the predetermined distance D between the pair of flange portions 70a can be changed by this sliding.

[0026] Therefore, when discharging the object to be removed W from the internal space S to the outside, the predetermined distance D between the pair of flange portions 70a is shortened compared to when it was retrieved, thereby widening the spacing K between the multiple linear members 71a in parallel state, and allowing the object to be removed W that has been taken into the internal space S to be discharged to the outside.

[0027] More specifically, it is configured as follows:

[0028] The recovery frame portion 70 has a bar 70b extending in the left-right direction held by the main body 2a of the planting device 2, at least a pair of brackets 70c attached to the bar 70b, and a hexagonal shaft 70d connecting the pair of brackets 70c, and the pair of flange portions 70a, 70a are attached to the shaft 70d, and at least one of the flange portions 70a is slidable along the shaft 70d.When discharging, one of the flange portions 70a can be slid by an arm 70e held in a predetermined position on the recovery frame portion 70, thereby making it possible to shorten the predetermined distance D between the pair of flange portions 70a compared to when they were being recovered.

[0029] The arm 70e is driven in conjunction with the lifting operation of the planting device 2, and slides one of the flange portions 70a.

[0030] During operation, the drive transmission shaft 18 rotates the hexagonal shaft 70d, which rotates the pair of flanges 70a and the collecting part 71. As a result, giant snails in the field are collected into the internal space S.

[0031] When the planting device 2 is raised, the arm 70e is automatically driven and slides by pushing one or both flange portions 70a, reducing the predetermined distance D between the flange portions 70a and widening the gap K between the linear members 72, causing the giant snails that have been collected into the internal space S to fall. The giant snails are then disposed of all at once or crushed on the spot.

[0032] It should be noted that the arm 70e may be driven manually regardless of whether the planting device 2 is raised.

[0033] Furthermore, it is desirable that the sliding movement be a reciprocating movement. That is, it is desirable that the arm 70e slides back and forth by retracting, then returning to its original position, and repeating this process. This is because the snails may get caught on the linear member 71a and not fall off, so the reciprocating sliding movement makes it easier to fall off.

[0034] Furthermore, three gutter-shaped semi-cylindrical receiving members 15 (see FIG. 5(A)) can be installed over each of the central, left, and right collection sections 71. These can be positioned at the top during collection and rotated to the bottom during discharge. This allows the receiving members 15 to be positioned at the top so as not to get in the way during collection, and then rotated to the bottom during discharge. The arms 70e can then widen the gap K to allow the giant snails to fall into the gutter-shaped semi-cylindrical receiving members 15 and be collected. Furthermore, it is desirable to tilt the gutter-shaped semi-cylindrical receiving members 15 left and right so that the falling giant snails can be collected at the edge of the gutter-shaped semi-cylindrical receiving members 15. This reduces the effort required to collect the discharged giant snails. The receiving members 15 are not limited to a semi-cylindrical shape, and may have a rectangular cross section.

[0035] 1, the collection unit 71 is positioned forward of the seedling planting rod 8 and the float 9. This allows the float 9 to level the field even if the collection unit 71 disturbs the field surface to some extent. Also, the removal target W can be removed before planting, preventing damage from being eaten.

[0036] Furthermore, the recovery mechanism 7 is constructed using a conventional soil-leveling rotor mechanism. Specifically, Figures 6 and 7 show the soil-leveling rotor mechanism 100 of a rice transplanter, with Figure 6 being a plan view of the left rotor 101 and Figure 7 being a side view of the left rotor 101 and the central rotor 102. Reference numeral 103 denotes a joint that transmits power from the vehicle body to the left rotor 101, and the height of each rotor can be adjusted by height adjustment device 104 via height adjusters 104a and 104b. Furthermore, through joint 103, rotational power is transmitted from the vehicle body 1 to the left rotor 101, and the power is also transmitted to the central rotor 102, and from there to the right rotor.

[0037] The recovery unit 71 is attached in place of the left, right and center rotors 101 and 1102 of the conventional ground leveling rotor mechanism 100.

[0038] By doing this, just as it was possible to match the rotational speed of the soil leveling rotor 101 to the traveling speed of the vehicle body 1 in the past, it is possible to match the rotational speed of the collection unit 71 in conjunction with the traveling speed of the vehicle body 1 (see Figure 5). This prevents the collection unit 71 from slipping relative to the field, making it possible to reliably collect the giant snails that are the objects to be removed W. Furthermore, since there is no slippage, wear on the collection unit 71 can be prevented, improving durability.

[0039] Furthermore, the height of the collection section 71 can be adjusted. That is, as shown in Fig. 7, conventionally, height adjustment device 104 could adjust the height of each rotor 101, 102 via height adjustment tools 104a, 104b, but the height of the left, right, and center collection sections 71 can also be adjusted using a similar mechanism.

[0040] The height can be adjusted in this way to suit the hardness of the field, improving collection accuracy. In other words, in soft fields, the spring material will not deform unless it is pressed hard, making it impossible to capture giant snails, so height adjustment is necessary.

[0041] The height can also be adjusted in conjunction with the hydraulic sensitivity dial. The hydraulic sensitivity corresponds to the hardness of the field, improving capture accuracy.

[0042] 3 and 4, the plurality of linear members 71a are generally spindle-shaped or biconical, but may be simply cylindrical, or may even be rectangular.

[0043] In the case of a spindle or bicone shape, the length of the linear member 71a is longer than the distance D between the pair of flanges 70a, 70a, so when assembled, the linear member 71a curves as shown in the figure, which reduces stress when deforming when pressed against the field, increases durability, allows for greater deformation, and has the advantage of being able to accommodate large jumbo snails.In addition, the linear member 71a can be made of plastic wire instead of metal wire.

[0044] Furthermore, the plurality of linear members 71a may collectively form a spindle or bicone shape, but may have a flat central portion F. That is, FIG. 5(B) shows an individual linear member 71a of the plurality of linear members 71a, whose central portion forms a flat portion F. Furthermore, a shape without any curved portions, as shown in FIG. 5(C), is also possible. The presence of this flat portion F makes it easier to capture giant snails from a wider range.

[0045] Furthermore, the location where the recovery mechanism 7 is attached does not have to be the location where the ground leveling rotor mechanism was located, but may be somewhere else, such as under the hood.

[0046] Next, another embodiment of the present invention will be described.

[0047] In this embodiment, the paddy field working machine can change the seedling planting depth using an electric means during operation, can change the height of the soil leveling rotor unit using an electric means during operation, and has a control unit that changes the height of the soil leveling rotor unit in conjunction with changes in planting depth during operation, has multiple levels of height values ​​for the soil leveling rotor unit for initial setting, and also has multiple levels of planting depth values ​​for initial setting, and when the control unit changes the height of the soil leveling rotor unit in conjunction with changes in planting depth during operation, it also takes into account the difference between the initially set height value and the initially set planting depth value.

[0048] Specifically, in the initial settings, if the rotor height dial, which has numerical steps (1 to 9), is set to, for example, a value (5), and the standard planting depth is set to, for example, a value (6) (e.g., 50 mm), the difference, that is, (6) - (5) = (1), is taken into account and linked during operation.

[0049] For example, if the difference is 0, it is assumed that the design is such that a 10% change in planting depth during operation will result in a 5% change in height, and if the difference is (1) above, it is assumed that a 10% change in planting depth will result in only a 4% change in height.

[0050] Previously, these were not linked, but this allows for the optimization of planting depth and rotor height.

[0051] In another variation, if the planting depth can be changed by means other than manual adjustment, the rotor height will change in response to changes in planting depth, but will not change when the rotor height is in the stored position (when not in use). This allows for optimal planting depth and rotor height.

[0052] In another variation, for devices where planting depth can be changed by means other than manual adjustment, the rotor height is linked to changes in planting depth, taking into account the difference between the rotor height dial values ​​(1-9) and the standard depth value (6). However, if the rotor height can be set to three higher levels in the function settings (high, standard, and low), and the above values ​​(1-9) can be set as lower levels for each level, the corresponding value of the standard planting standard (6) (=50 mm) can be set 10 mm higher (60 mm) or 10 mm lower (40 mm) for each level. This allows for optimization of planting depth and rotor height.

[0053] In another variation, for machines where planting depth can be changed by means other than manual adjustment, the rotor height is linked to changes in planting depth, taking into account the difference between the rotor height dial value (1-9) and the standard depth value (6). However, if the initial setting for the rotor height dial is set to 1-2 (or 3), the amount of variation is suppressed to protect the machine. This allows for optimization of planting depth and rotor height. In other words, if such a selection is made, the amount of variation in the link is reduced even if the difference is large.

[0054] In another variation, for machines where the planting depth can be changed by means other than manual adjustment, when the rotor height is linked to the change in planting depth, the difference between the rotor height dial value (1-9) and the standard depth value (6) is taken into account. However, if the rotor height dial value is set to 1-2 (or 3), the rotor height will not be linked to protect the machine. This allows for optimization of the planting depth and rotor height.

[0055] In another variation, for those in which the planting depth can be changed by means other than manual means, when the rotor height is linked to the change in planting depth, it is changed taking into account the difference between the value on the rotor height dial (1 to 9) and the value on the standard depth (6), but rather than being directly proportional, the greater the difference, the more suppressed the amount of change that is achieved.

[0056] In another variation, for a system where the planting depth can be changed by means other than manual adjustment, the rotor height is changed after the planting depth is changed to prevent overlapping of the motor's electromotive currents when the rotor height is linked to the change in planting depth, thereby reducing power consumption.

[0057] In another variation, for a system where the planting depth can be changed by means other than manual adjustment, when the rotor height is linked to the change in planting depth, the planting depth is changed after the rotor height is changed to prevent overlapping of the motor's electromotive current. Even when the rotor height is changed in response to a change in planting depth, the timing of the change is as described above. This reduces power consumption.

[0058] The following are examples of inventions related to the present invention.

[0059] As shown in Figure 8, the paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by a power unit 10 that is independent of the vehicle body 1, and the central rotor case 12 and the case 10a of the power unit 10 are configured as the same case. In other words, the power unit 10 drives the shaft of the central rotor.

[0060] As a result, in the past, the ground leveling rotor mechanism was driven by a transmission shaft connected to the vehicle body 1, but the presence of this transmission shaft limited the layout of the ground leveling rotor mechanism and also limited the rotation control of the ground leveling rotor, but in this embodiment, the transmission shaft is not necessary, so there are fewer limitations on the layout of the ground leveling rotor mechanism.In addition, because it is driven by a power unit 10 that is independent of the vehicle body, it can be controlled at any rotation speed.

[0061] Figure 9 shows another embodiment in which, as shown in the figure, the paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and the side rotor case 13 and the case 10a of the power unit 10 are constructed in the same case.

[0062] This eliminates the need for a transmission shaft, reducing the limitations on the layout of the ground leveling rotor mechanism, and because it is driven by an independent power unit 10, it can be controlled at any desired rotation speed.

[0063] Figure 10 shows another embodiment, in which, as shown in the figure, the paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and the power unit 10 is arranged between a central rotor case 12 and a side rotor case 13 when viewed from the side.

[0064] Figures 11(A) and (B) show another embodiment, in which, as shown in the figures, the paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and when the sub-speed change lever 14 enters the "moving" position, the rotor drive is stopped regardless of the height of the seedling planting device 2.

[0065] Conventionally, the soil leveling rotor mechanism was driven by a transmission shaft connected to the vehicle body 1, but the clutch was disengaged when the height of the seedling planting device 2 reached a certain height. Therefore, even when the soil leveling rotor mechanism was not needed, the soil leveling rotor would rotate as the height of the seedling planting device 2 was lowered.

[0066] According to this example, when rotor drive is not required, such as when traveling at a moving speed, it is possible to stop rotor drive regardless of the height of the seedling planting device 2, which leads to labor savings. In addition, the number of rotating bodies during movement can be reduced, improving safety.

[0067] Figure 12 shows another embodiment, in which, as shown in the figure, the paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and the rotor height is controlled according to the field conditions by detecting the load on the power unit 10 that drives the rotor.

[0068] Conventionally, the soil leveling rotor mechanism has been driven by a transmission shaft connected to the vehicle body 1. Also, the configuration was such that the clutch would be disengaged when the height of the seedling planting device 2 reached a certain height.

[0069] However, according to this embodiment, it is possible to control the rotor height by detecting the load on the soil leveling rotor via the power unit 10. Because the rotor height is controlled according to the field conditions, damage to the rotor can be prevented and wasted power can be reduced, leading to labor savings and improved fuel efficiency.

[0070] Figure 13 shows another embodiment, in which, as shown in the figure, a paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and the rotor rotation speed is controlled according to the field conditions by detecting the load on the power unit 10 that drives the rotor.

[0071] According to this embodiment, the load on the soil leveling rotor is detected via the power unit, enabling rotor speed control to be performed according to the field conditions. Controlling the rotor speed according to the field conditions prevents damage to the rotor device, reduces wasted power, and leads to labor savings and improved fuel efficiency.

[0072] Figure 14 shows another embodiment, in which, as shown in the figure, the paddy field working machine is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and the case connecting the central rotor case 12 and the case 10a of the power unit 10 are configured to partially overlap when viewed from behind.

[0073] In this way, optimizing the positioning of the power unit 10 of the soil leveling rotor mechanism 11 improves the balance of the seedling planting device 2. Furthermore, improving the rolling stability of the seedling planting device 2 improves soil leveling and planting performance.

[0074] As shown in FIG. 9, the side rotor case 13 and the case 10a of the power unit 10 are configured to partially overlap each other when viewed from behind.

[0075] In this way, optimizing the positioning of the power unit 10 of the soil leveling rotor mechanism 11 improves the balance of the seedling planting device 2. Furthermore, improving the rolling stability of the seedling planting device 2 improves soil leveling and planting performance.

[0076] As shown in FIG. 14, a ground leveling rotor mechanism 11 driven by an independent power unit 10 is mounted, and the rotor rotation shaft 16 and the rotation shaft 17 of the driving power unit are configured to be parallel to each other.

[0077] In this way, optimizing the positioning of the power unit 10 of the soil leveling rotor mechanism 11 improves the balance of the seedling planting device 2. Furthermore, improving the rolling stability of the seedling planting device 2 improves soil leveling and planting performance.

[0078] As shown in Figure 15, the seedling transplanter is equipped with a soil leveling rotor mechanism 11 driven by an independent power unit 10, and the power unit 10 is arranged between the left and right side rotor cases 13, 13.

[0079] Optimizing the placement of the power unit 10 of the soil leveling rotor mechanism 11 improves the balance of the seedling planting device 2. In addition, improving the rolling stability of the seedling planting device 2 improves soil leveling and planting performance.

[0080] In the above-described embodiments, an electric motor is used as an example of the power unit 10. [Industrial Applicability]

[0081] The present invention is a working machine that can reliably remove objects to be removed, such as giant snails, and is therefore ideal for use as a side view of a paddy field working machine. [Explanation of symbols]

[0082] 1. Body 2 Planting equipment 3 Spare seedling frames 4 Driver's seat 5 front wheels 6 rear wheels 7. Recovery Mechanism 70 Recovery frame section 70a flange 70b bar 70c bracket 70d shaft 70e arm 71 Recovery Department 71a 8 Planting rod 9. Float 10 Power plant 10a Case 11 Leveling rotor mechanism 12 Central rotor case 13 Rotor case again 14 Sub-gear lever 15 Semi-cylindrical support member 16, 17 Rotation axis 18 Drive transmission shaft K interval D distance F Flat part S space W Object to be removed

Claims

1. A recovery mechanism is attached to the vehicle body and recovers materials to be removed that are present in the field, the collection mechanism includes a collection frame and a collection unit held by the collection frame; the collection portion is a plurality of elastic linear members, The recovery section is disposed forward of the seedling planting rod and the float, A paddy field working machine characterized in that the height of the recovery section can be adjusted.

2. The plurality of linear members form an internal space, The distance between the plurality of linear members is adjustable in accordance with the object to be removed, 2. A paddy field working machine as described in claim 1, wherein when the object to be removed is collected, the maximum distance between adjacent linear members is narrower than the size of the object to be removed, and when the object to be removed is pressed against the linear members, the distance between the elastic linear members widens, allowing the object to be removed to pass through into the internal space.

3. the recovery frame portion has a pair of flange portions spaced at least a predetermined distance apart, and both ends of the plurality of linear members arranged in parallel are respectively connected to the inside of the pair of flange portions; The predetermined distance between the pair of flange portions is configured to be changeable, A paddy field working machine as described in claim 1 or 2, wherein when the object to be removed is discharged from the internal space to the outside, the predetermined distance between the pair of flange portions is shortened compared to when it was recovered, thereby widening the spacing between the multiple linear members that are in parallel, and discharging the object to be removed that has been taken into the internal space to the outside.

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