Riding rice transplanter

Abstract

To provide a riding type rice transplanter that can switch a planting clutch and a fertilizing clutch separately.SOLUTION: A riding type rice transplanter includes: a planting clutch 23 which couples / uncouples the power to a planting device; a fertilizing clutch 24 which couples / uncouples the power to a fertilization device; a planting switching member 26 which switches the planting clutch 23; a fertilization switching member 27 which switches the fertilizing clutch 24; a motor M1 which switch-drives the planting switching member 26 and the fertilization switching member 27; a main link mechanism 29 to which the power from the motor M1 is transmitted; a planting link mechanism 30 which transmits the power to the planting switching member 26 in conjunction with the main link mechanism 29; and a fertilization link mechanism 31 which transmits the power to the fertilization switching member 27 in conjunction with the main link mechanism 29. The planting link mechanism 30 and the fertilization link mechanism 31 are configured to be linked separately to the main link mechanism 29.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a riding rice transplanter. [Background technology]

[0002] A known example of a conventional riding rice transplanter is the riding rice transplanter described in Patent Document 1. The riding rice transplanter described in Patent Document 1 includes a planting device that plants seedlings in the surface of a rice field, a fertilizer applicator that supplies fertilizer to the surface of the rice field, a planting clutch that connects and disconnects power to the planting device, a fertilizer clutch that connects and disconnects power to the fertilizer applicator, a planting switching member that switches the planting clutch, a fertilizer switching member that switches the fertilizer clutch, and a motor that switches and drives the planting switching member and the fertilizer switching member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-99267 Summary of the Invention [Problem to be solved by the invention]

[0004] In the riding rice transplanter described in Patent Document 1, the planting clutch and the fertilizing clutch cannot be switched separately.

[0005] In view of the above situation, there is a demand for a riding rice transplanter that can switch the planting clutch and the fertilizing clutch separately. [Means for solving the problem]

[0006] The present invention is characterized by: a planting device for planting seedlings on the surface of the rice paddy; a fertilizer applicator that supplies fertilizer to the rice field surface; A planting clutch that interrupts power to the planting device; A fertilizer clutch that interrupts power to the fertilizer application device; A planting switching member for switching the planting clutch; A fertilization switching member that switches the fertilization clutch; A motor that switches and drives the planting switching member and the fertilization switching member; a main link mechanism to which power from the motor is transmitted; A planting link mechanism that transmits power to the planting switching member in conjunction with the main link mechanism; A fertilization link mechanism that transmits power to the fertilization switching member in conjunction with the main link mechanism, The planting link mechanism and the fertilizing link mechanism are configured to be able to be linked to the main link mechanism separately.

[0007] According to this characteristic configuration, the planting link mechanism and the fertilizing link mechanism are each linked to the main link mechanism, so that the planting link mechanism and the fertilizing link mechanism transmit power from the main link mechanism to the planting switching member and the fertilizing switching member, respectively. This allows the planting clutch and the fertilizing clutch to be switched separately.

[0008] Furthermore, in the present invention, The planting link mechanism has a planting intermediate link that can swing around a swing axis extending along the left-right direction of the machine body, The fertilization link mechanism has a fertilization intermediate link that can swing around the swing axis common to the planting intermediate link, The main link mechanism has a main rod that is interlocked and connected to the planting intermediate link and the fertilizing intermediate link, The main rod is inserted into the planting intermediate link, and a first long hole having an arc shape centered on the swing axis is formed, The main rod is inserted into the fertilizing intermediate link, and a second long hole having an arc shape centered on the swing axis is formed, It is preferable that the planting intermediate link and the fertilization intermediate link are configured so that their states can be changed to a first state in which the planting clutch is disengaged and the fertilization clutch is disengaged when power from the motor is transmitted to the main rod, a second state in which the planting clutch is disengaged and the fertilization clutch is engaged, and a third state in which the planting clutch is engaged and the fertilization clutch is engaged.

[0009] According to this characteristic configuration, the planting intermediate link and the fertilizing intermediate link are changed from the first state to the second state and then to the third state, so that the fertilizing clutch engages before the planting clutch. This allows the fertilizer applicator to supply fertilizer to the rice field surface before the planting device plants seedlings in the rice field surface.

[0010] Furthermore, in the present invention, A biasing member is provided to bias the planting intermediate link to swing upward around the swing axis, In the first state, it is preferable that the upper end of the first elongated hole is located higher than the upper end of the second elongated hole.

[0011] According to this characteristic configuration, when the lower end of the main rod is in contact with the upper end of the second long hole, the planting intermediate link's upward swing around the swing axis is not hindered by the main rod.

[0012] Furthermore, in the present invention, The planting device has a seedling loading table on which a plurality of rows of mat-shaped seedlings are placed, a plurality of planting small-row clutches for selecting rows into which seedlings are to be planted, and a small-row motor for switching and driving the plurality of planting small-row clutches, The fertilizer application device has a plurality of fertilizer application minority row clutches for selecting rows to be fertilized, The plurality of fertilizing minority clutches are switched and driven by the minority motor, It is preferable that the small-row motor is arranged on the surface of the seedling tray opposite to the surface on which the mat-shaped seedlings are placed.

[0013] This feature allows the use of a small-row motor to switch and drive multiple fertilizer small-row clutches. The small-row motor can also be placed in the space on the opposite side of the seedling tray from the side on which the mat-shaped seedlings are placed.

[0014] Furthermore, in the present invention, A plurality of operation cables are provided to transmit power from the minority row motor to the plurality of fertilization minority row clutches, It is preferable that the plurality of operating cables are routed along one side of the seedling loading platform in the left-right direction of the machine body.

[0015] According to this characteristic configuration, a plurality of operation cables can be routed together. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a right side view showing a riding rice transplanter. [Figure 2] FIG. 1 is a plan view showing a riding rice transplanter. [Figure 3] FIG. 10 is a diagram showing a configuration for transmitting power to a planting device and a fertilizer application device. [Figure 4] FIG. 10 is a diagram showing a configuration for switching between a planting clutch and a fertilizing clutch. [Figure 5] A right side view showing the motor, link mechanism, planting switching member, and fertilization switching member. [Figure 6] A plan view showing the motor, link mechanism, planting switching member, and fertilization switching member. [Figure 7] A right side view showing the planting first intermediate link and the fertilizing first intermediate link in the first state. [Figure 8] A right side view showing the planting first intermediate link and the fertilizing first intermediate link in the second state. [Figure 9] A right side view showing the planting first intermediate link and the fertilizing first intermediate link in the third state. [Figure 10]A diagram showing the configuration for switching the planting minority row clutch and the fertilization minority row clutch. [Figure 11] This is a rear view showing the arrangement of the small-number motor and fertilization operation cable. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of the present invention will be described with reference to the drawings. In the following, the direction of arrow F is defined as "forward of the aircraft body," the direction of arrow B is defined as "rearward of the aircraft body," the direction of arrow L is defined as "leftward of the aircraft body," the direction of arrow R is defined as "rightward of the aircraft body," the direction of arrow U is defined as "upward of the aircraft body," and the direction of arrow D is defined as "downward of the aircraft body."

[0018] A riding rice transplanter is shown in Figures 1 and 2. As shown in Figures 1 and 2, the riding rice transplanter includes a traveling body 1, a motor unit 2, a driving unit 3, a step 4, a planting device 5, a fertilizer application device 6, and a transmission unit 7 (see Figure 3).

[0019] The traveling machine body 1 includes left and right front wheels 9, left and right rear wheels 10, and a machine body frame 11. The machine body frame 11 is supported by the left and right front wheels 9 and the left and right rear wheels 10.

[0020] The motor unit 2 is provided at the front of the traveling machine body 1. The motor unit 2 includes an engine E (see FIG. 3) and a bonnet 12 that houses the engine E.

[0021] A driver sits in the driving section 3. The driving section 3 is provided behind the driving section 2. The driving section 3 includes a driver's seat 13 and a steering wheel 14 for steering the traveling machine body 1.

[0022] The step 4 is provided on the vehicle frame 11. The step 4 includes a front step 15, a middle step 16, and a rear step 17.

[0023] The front step 15 is provided around the hood 12 at the front of the vehicle frame 11. The rear step 17 is provided around the driver's seat 13 at the rear of the vehicle frame 11. The middle step 16 is provided between the front step 15 and the rear step 17 on the vehicle frame 11.

[0024] The planting device 5 plants seedlings in the rice paddy surface. In this embodiment, the planting device 5 is configured as an eight-row planting device. The planting device 5 is provided behind the traveling machine body 1. The planting device 5 is configured to be able to rise and fall by a link mechanism 19. The planting device 5 is supported on the rear of the machine body frame 11 via the link mechanism 19. The planting device 5 is equipped with a seedling placing table 18 on which multiple rows (eight rows in this embodiment) of mat-shaped seedlings are placed.

[0025] The fertilizer applicator 6 supplies fertilizer to the surface of the rice field. In this embodiment, the fertilizer applicator 6 is configured as an eight-row fertilizer applicator. The fertilizer applicator 6 is provided behind the driver's seat 13 at the rear of the traveling body 1.

[0026] The transmission unit 7 changes the speed of the power from the engine E. The power from the transmission unit 7 is transmitted to the left and right front wheels 9, the left and right rear wheels 10, the planting device 5, and the fertilizing device 6.

[0027] As shown in Fig. 3, the transmission unit 7 includes a hydrostatic continuously variable transmission 21 and a transmission case 20. The transmission case 20 houses a gear-type transmission 22, a planting clutch 23, and a fertilizing clutch 24. The transmission unit 7 changes the speed of the power from the engine E by the continuously variable transmission 21, and changes the speed of the power from the continuously variable transmission 21 by the transmission 22.

[0028] The planting clutch 23 connects and disconnects power to the planting device 5. The planting clutch 23 is configured to be switchable between an on state in which power is transmitted to the planting device 5 and a off state in which power is not transmitted to the planting device 5. The planting clutch 23 is provided in the power transmission path from the speed change device 22 to the planting device 5.

[0029] The fertilization clutch 24 connects and disconnects power to the fertilization device 6. The fertilization clutch 24 is configured to be switchable between an on state in which power is transmitted to the fertilization device 6 and a off state in which power is not transmitted to the fertilization device 6. The fertilization clutch 24 is provided on a power transmission path from the transmission 22 to the fertilization device 6.

[0030] As shown in Figure 4, the planting clutch 23 is switched by a planting switching member 26. The fertilization clutch 24 is switched by a fertilization switching member 27. The planting switching member 26 and the fertilization switching member 27 are driven and switched by a motor M1. Power from the motor M1 is transmitted to the planting switching member 26 and the fertilization switching member 27 by a link mechanism 28. The motor M1 is driven in response to the operation of the clutch lever 25.

[0031] The link mechanism 28 transmits power from the motor M1 to the planting switching member 26 and the fertilization switching member 27. The link mechanism 28 includes a main link mechanism 29, a planting link mechanism 30, and a fertilization link mechanism 31. The main link mechanism 29 transmits power from the motor M1 to the planting link mechanism 30 and the fertilization link mechanism 31. In other words, the main link mechanism 29 receives power from the motor M1. The planting link mechanism 30 transmits power to the planting switching member 26 in conjunction with the main link mechanism 29. The fertilization link mechanism 31 transmits power to the fertilization switching member 27 in conjunction with the main link mechanism 29.

[0032] 5 and 6, the planting clutch 23 is configured as a pawl clutch. The planting clutch 23 has a pair of meshing members 23A and 23B. One meshing member 23A is biased by a spring 32 toward the other meshing member 23B so that it meshes with the other meshing member 23B.

[0033] When one meshing member 23A and the other meshing member 23B mesh together, the planting clutch 23 is engaged. When the planting clutch 23 is engaged, power is output from the planting output shaft 33 toward the planting device 5. When the one meshing member 23A and the other meshing member 23B are disengaged, the planting clutch 23 is disengaged.

[0034] The planting switching member 26 is configured to be movable along the left-right direction of the machine body. The planting switching member 26 is configured to be switchable between an ON position where the planting clutch 23 is ON and an OFF position where the planting clutch 23 is OFF.

[0035] When the planting switching member 26 is switched to the ON position, one meshing member 23A is moved toward the other meshing member 23B by the biasing force of the spring 32, and meshes with the other meshing member 23B, turning on the planting clutch 23. When the planting switching member 26 is switched to the OFF position, one meshing member 23A is moved by the planting switching member 26 to the opposite side of the other meshing member 23B against the biasing force of the spring 32, and meshing with the other meshing member 23B is released, and the planting clutch 23 is turned off.

[0036] The fertilizer clutch 24 is a pawl clutch. The fertilizer clutch 24 has a pair of meshing members 24A and 24B. One meshing member 24A is biased by a spring 34 toward the other meshing member 24B so that it meshes with the other meshing member 24B.

[0037] When one meshing member 24A and the other meshing member 24B mesh together, the fertilization clutch 24 is turned on. When the fertilization clutch 24 is turned on, power is output from the fertilization output shaft 35 toward the fertilizer application device 6. When the meshing between one meshing member 24A and the other meshing member 24B is released, the fertilization clutch 24 is turned off.

[0038] The fertilization switching member 27 is configured to be swingable around a swing axis Z1 that extends in the vertical direction. The fertilization switching member 27 is configured to be switchable between an ON position where the fertilization clutch 24 is engaged and an OFF position where the fertilization clutch 24 is disengaged.

[0039] When the fertilizer application switching member 27 is switched to the ON position, one meshing member 24A is moved toward the other meshing member 24B by the biasing force of the spring 34, and meshes with the other meshing member 24B, thereby engaging the fertilizer application clutch 24. When the fertilizer application switching member 27 is switched to the OFF position, one meshing member 24A is moved by the fertilizer application switching member 27 to the opposite side from the other meshing member 24B against the biasing force of the spring 34, and meshing with the other meshing member 24B is released, and the fertilizer application clutch 24 is switched OFF.

[0040] The main link mechanism 29 includes a main link 36 and a main rod 37. The planting link mechanism 30 includes a first planting intermediate link 38 (corresponding to the "planting intermediate link" according to the present invention), a planting rod 39, and a second planting intermediate link 40. The fertilization link mechanism 31 includes a first fertilization intermediate link 41 (corresponding to the "fertilization intermediate link" according to the present invention), a second fertilization intermediate link 42, a third fertilization intermediate link 43, and a fertilization rod 44.

[0041] The main link 36 is configured to be swingable around a swing axis X1 extending in the left-right direction of the machine body. The main link 36 is supported by a support shaft 45. Power from a motor M1 is transmitted to the support shaft 45 via a gear-type power transmission mechanism (not shown). The main link 36 is configured to be non-rotatable relative to the support shaft 45 (but can rotate integrally with the support shaft 45). The support shaft 45 extends in the left-right direction of the machine body. The main link 36 is provided at the right end of the support shaft 45.

[0042] The main rod 37 is provided across the main link 36 and the first planting intermediate link 38 and the first fertilization intermediate link 41. The upper end of the main rod 37 is supported by the main link 36. The lower end of the main rod 37 is supported by the first planting intermediate link 38 and the first fertilization intermediate link 41. In other words, the main rod 37 is operatively connected to the first planting intermediate link 38 and the first fertilization intermediate link 41.

[0043] The planting first intermediate link 38 is provided between the main rod 37 and the planting rod 39. The planting first intermediate link 38 is configured to be swingable around a swing axis X2 extending along the left-right direction of the machine body. The planting first intermediate link 38 is biased to swing clockwise around the swing axis X2 in side view by a spring 46 (corresponding to the "biasing member" according to the present invention). In other words, the spring 46 biases the planting first intermediate link 38 to swing upward around the swing axis X2. The planting first intermediate link 38 is supported by a support shaft 47. The planting first intermediate link 38 is configured to be rotatable relative to the support shaft 47. The support shaft 47 extends along the left-right direction of the machine body. The planting first intermediate link 38 is provided at the right end of the support shaft 47.

[0044] The first planting intermediate link 38 has a slot 38a (corresponding to the "first slot" according to the present invention) through which the main rod 37 is inserted. The slot 38a is formed in an arc shape centered on the swing axis X2. The lower end of the main rod 37 is inserted into the slot 38a.

[0045] The planting rod 39 is provided across the first planting intermediate link 38 and the second planting intermediate link 40. The front end of the planting rod 39 is supported by the second planting intermediate link 40. The rear end of the planting rod 39 is supported by the first planting intermediate link 38.

[0046] The planting second intermediate link 40 is provided across the planting rod 39 and the planting switching member 26. The planting second intermediate link 40 is configured to be swingable around a swing axis Z2 that extends in the vertical direction.

[0047] The first fertilizing intermediate link 41 and the second fertilizing intermediate link 42 are configured to be swingable around the swing axis X2. That is, the first fertilizing intermediate link 41 and the second fertilizing intermediate link 42 are configured to be swingable around the same swing axis X2 as the first planting intermediate link 38. The first fertilizing intermediate link 41 and the second fertilizing intermediate link 42 are biased by a spring (not shown) to swing counterclockwise around the swing axis X2 in side view. The first fertilizing intermediate link 41 and the second fertilizing intermediate link 42 are supported by a support shaft 47. The first fertilizing intermediate link 41 and the second fertilizing intermediate link 42 are configured to be non-rotatable relative to the support shaft 47 (but can rotate integrally with the support shaft 47). The first fertilizing intermediate link 41 is provided at the right end of the support shaft 47. Specifically, the first fertilizing intermediate link 41 is provided at a position to the right of the first planting intermediate link 38 at the right end of the support shaft 47. The second fertilization intermediate link 42 is provided at the left end of the support shaft 47.

[0048] The first fertilizing intermediate link 41 has a long hole 41a (corresponding to the "second long hole" according to the present invention) through which the main rod 37 is inserted. The long hole 41a is formed in an arc shape centered on the swing axis X2. The lower end of the main rod 37 is inserted into the long hole 41a. The long hole 38a and the long hole 41a are formed on the same arc centered on the swing axis X2.

[0049] The third fertilization intermediate link 43 is provided across the second fertilization intermediate link 42 and the fertilization rod 44. The front end of the third fertilization intermediate link 43 is supported by the fertilization rod 44. The rear end of the third fertilization intermediate link 43 is supported by the second fertilization intermediate link 42.

[0050] The fertilization rod 44 is provided across the fertilization third intermediate link 43 and the fertilization switching member 27. The front end of the fertilization rod 44 is supported by the fertilization switching member 27. The rear end of the fertilization rod 44 is supported by the fertilization third intermediate link 43.

[0051] As shown in Figures 7 to 9, the planting link mechanism 30 and the fertilization link mechanism 31 are configured to be able to interlock with the main link mechanism 29 separately. The planting first intermediate link 38 and the fertilization first intermediate link 41 are configured to be able to change their states among a first state (see Figure 7), a second state (see Figure 8), and a third state (see Figure 9) as power from the motor M1 is transmitted to the main rod 37. As the main link 36 is swung clockwise around the swing axis X1 by the power from the motor M1, the planting first intermediate link 38 and the fertilization first intermediate link 41 change states in the order of the first state (see Figure 7), the second state (see Figure 8), and the third state (see Figure 9). In other words, as the planting first intermediate link 38 and the fertilization first intermediate link 41 change states in the order of the first state, the second state, and the third state, the fertilization clutch 24 engages before the planting clutch 23.

[0052] As shown in Figure 7, the first state is a state in which the planting clutch 23 is disengaged and the fertilization clutch 24 is disengaged. The fertilization first intermediate link 41 is biased by the spring to swing counterclockwise around the swing axis X2 in side view, and the lower end of the main rod 37 comes into contact with the upper end of the long hole 41a of the fertilization first intermediate link 41, positioning the fertilization first intermediate link 41 in the first state. In other words, the fertilization clutch 24 is disengaged.

[0053] The planting first intermediate link 38 is biased by the spring 46 to swing clockwise around the swing axis X2 in side view, and when the planting switching member 26 hits one of the meshing members 23A (see Figures 5 and 6), the planting first intermediate link 38 is positioned in the first state. In other words, the planting clutch 23 is disengaged.

[0054] In the first state, the upper end of the long hole 38a of the first planting intermediate link 38 is positioned above the lower end of the main rod 37. That is, in the first state, the upper end of the long hole 38a of the first planting intermediate link 38 is positioned above the upper end of the long hole 41a of the first fertilizing intermediate link 41.

[0055] As shown in Figure 8, the second state is a state in which the planting clutch 23 is disengaged and the fertilization clutch 24 is engaged. When the lower end of the main rod 37 descends to the position shown in Figure 8, the fertilization first intermediate link 41 is swung counterclockwise around the swing axis X2 in side view by the biasing force of the spring, and swings to the second state. In other words, the fertilization clutch 24 is engaged. When the lower end of the main rod 37 contacts the upper end of the long hole 41a of the fertilization first intermediate link 41, the fertilization first intermediate link 41 is positioned in the second state. In the second state, the upper end of the long hole 41a of the fertilization first intermediate link 41 is positioned above the swing axis X2.

[0056] The planting first intermediate link 38 is biased by the spring 46 to swing clockwise around the swing axis X2 in side view, but because the lower end of the main rod 37 is not in contact with the lower end of the planting first intermediate link 38, the planting first intermediate link 38 does not swing counterclockwise around the swing axis X2. In other words, the planting clutch 23 remains disengaged.

[0057] As shown in Figure 9, the third state is a state in which the planting clutch 23 is engaged and the fertilization clutch 24 is engaged. When the lower end of the main rod 37 descends to the position shown in Figure 9, the lower end of the main rod 37 comes into contact with the lower end of the long hole 38a of the first planting intermediate link 38, causing the first planting intermediate link 38 to swing counterclockwise around the swing axis X2 against the biasing force of the spring 46. In other words, the planting clutch 23 is engaged.

[0058] As shown in FIG. 10, the planting device 5 includes a plurality of (four in this embodiment) planting few-row clutches 48 that select rows into which seedlings are planted, and a few-row motor M2 that switches between and drives the plurality of planting few-row clutches 48. The few-row motor M2 is driven in response to the operation of an operation switch 49. The planting few-row clutches 48 select rows into which seedlings are planted, two rows as a group. The fertilizer application device 6 includes a plurality of (four in this embodiment) fertilizer few-row clutches 50 that select rows to which fertilization is to be performed. The fertilizer few-row clutches 50 select rows into which fertilization is to be performed, two rows as a group. The plurality of fertilizer few-row clutches 50 are switched and driven by the few-row motor M2. In other words, the few-row motor M2 is shared by the plurality of planting few-row clutches 48 and the plurality of fertilizer few-row clutches 50. Power from the few-row motor M2 is transmitted to a cam mechanism 51.

[0059] A plurality of (four in this embodiment) planting operation cables 52 are provided between the cam mechanism 51 and the plurality of planting few-row clutches 48. The planting operation cables 52 transmit power from the cam mechanism 51 to the planting few-row clutches 48. That is, the planting operation cables 52 transmit power from the few-row motor M2 to the planting few-row clutches 48.

[0060] A plurality of (four in this embodiment) fertilization operation cables 53 (corresponding to the "operation cables" according to the present invention) are provided across the cam mechanism 51 and the plurality of fertilization few-row clutches 50. The fertilization operation cables 53 transmit power from the cam mechanism 51 to the fertilization few-row clutches 50. In other words, the fertilization operation cables 53 transmit power from the few-row motor M2 to the fertilization few-row clutches 50.

[0061] As shown in Figure 11, the few-row motor M2 is arranged on the front side of the seedling loading platform 18. In other words, the few-row motor M2 is arranged on the side of the seedling loading platform 18 opposite to the side on which the mat-shaped seedlings are placed. Multiple fertilization operation cables 53 extend from the cam mechanism 51 toward the fertilizer application device 6. The multiple fertilization operation cables 53 are routed along one side of the seedling loading platform 18 in the left-right direction of the machine body (the right side in this embodiment).

[0062] Another embodiment of the present invention will now be described.

[0063] (1) In the above embodiment, the planting first intermediate link 38 and the fertilizing first intermediate link 41 are configured to be changeable between the first state, the second state, and the third state. However, as long as the planting first intermediate link 38 and the fertilizing first intermediate link 41 are configured to be changeable between the first state and the third state, they do not necessarily have to be configured to be changeable to the second state.

[0064] (2) In the above embodiment, the upper end of the long hole 38a of the first planting intermediate link 38 is positioned higher than the upper end of the long hole 41a of the first fertilizing intermediate link 41 in the first state. However, in the first state, the upper end of the long hole 38a of the first planting intermediate link 38 may be located at the same height as the upper end of the long hole 41a of the first fertilizing intermediate link 41.

[0065] (3) In the above embodiment, the plurality of fertilizing minority-row clutches 50 are driven and switched by the minority-row motor M2. However, the plurality of fertilizing minority-row clutches 50 may be driven and switched by a motor other than the minority-row motor M2.

[0066] (4) In the above embodiment, the small number of seedlings motor M2 is arranged on the side (front) opposite to the side on which the mat-shaped seedlings are placed on the seedling placing table 18. However, the small number of seedlings motor M2 may be arranged at a location other than the side (front) opposite to the side on which the mat-shaped seedlings are placed on the seedling placing table 18.

[0067] (5) In the above embodiment, the multiple fertilization control cables 53 are routed along one side (right side) of the seedling loading platform 18 in the left-right direction of the machine body. The multiple fertilization control cables 53 may also be routed along the other side (left side) of the seedling loading platform 18 in the left-right direction of the machine body.

[0068] (6) In the above embodiment, the planting device 5 is configured as an eight-row planting device. However, the planting device 5 is not limited to an eight-row planting device. For example, the planting device 5 may be configured as a four-row, six-row, or ten-row planting device.

[0069] (7) In the above embodiment, the fertilizer applicator 6 is configured as an eight-row fertilizer applicator. However, the fertilizer applicator 6 is not limited to an eight-row fertilizer applicator. For example, the fertilizer applicator 6 may be configured as a four-row, six-row, or ten-row fertilizer applicator. [Industrial Applicability]

[0070] The present invention can be used in a riding rice transplanter. [Explanation of symbols]

[0071] 5 Planting equipment 6 Fertilizer application equipment 18 Seedling tray 23 Planting Clutch 24 Fertilizer clutch 26 Planting changeover component 27 Fertilizer switching component 29 Main link mechanism 30 Planting link mechanism 31 Fertilizer application link mechanism 37 Main Rod 38 Planting first intermediate link (planting intermediate link) 38a long hole (first long hole) 41 Fertilization first intermediate link (fertilization intermediate link) 41a Long hole (second long hole) 48 Planting small number of rows clutch 50 Fertilizer Small Row Clutch 53 Fertilization operation cable (operation cable) M1 motor M2 few-strand motor X2 Swing axis center

Claims

1. a planting device for planting seedlings on the surface of the rice paddy; a fertilizer applicator that supplies fertilizer to the rice field surface; A planting clutch that interrupts power to the planting device; A fertilizer clutch that interrupts power to the fertilizer application device; A planting switching member for switching the planting clutch; A fertilization switching member that switches the fertilization clutch; A motor that switches and drives the planting switching member and the fertilization switching member; a main link mechanism to which power from the motor is transmitted; A planting link mechanism that transmits power to the planting switching member in conjunction with the main link mechanism; A fertilization link mechanism that transmits power to the fertilization switching member in conjunction with the main link mechanism, The planting link mechanism and the fertilizing link mechanism are configured to be able to be linked to the main link mechanism separately.

2. The planting link mechanism has a planting intermediate link that can swing around a swing axis extending along the left-right direction of the machine body, The fertilization link mechanism has a fertilization intermediate link that can swing around the swing axis common to the planting intermediate link, The main link mechanism has a main rod that is interlocked and connected to the planting intermediate link and the fertilizing intermediate link, The main rod is inserted into the planting intermediate link, and a first long hole having an arc shape centered on the swing axis is formed, The main rod is inserted into the fertilizing intermediate link, and a second long hole having an arc shape centered on the swing axis is formed, The riding rice transplanter described in claim 1, wherein the planting intermediate link and the fertilization intermediate link are configured to be able to change their states between a first state in which the planting clutch is disengaged and the fertilization clutch is disengaged when power from the motor is transmitted to the main rod, a second state in which the planting clutch is disengaged and the fertilization clutch is engaged, and a third state in which the planting clutch is engaged and the fertilization clutch is engaged.

3. A biasing member is provided to bias the planting intermediate link to swing upward around the swing axis, The riding rice transplanter according to claim 2, wherein in the first state, an upper end of the first slot is positioned higher than an upper end of the second slot.

4. The planting device has a seedling loading table on which a plurality of rows of mat-shaped seedlings are placed, a plurality of planting small-row clutches for selecting rows into which seedlings are to be planted, and a small-row motor for switching and driving the plurality of planting small-row clutches, The fertilizer application device has a plurality of fertilizer application minority row clutches for selecting rows to be fertilized, The plurality of fertilizing minority clutches are switched and driven by the minority motor, The riding rice transplanter according to any one of claims 1 to 3, wherein the small-row motor is arranged on the surface of the seedling tray opposite to the surface on which the mat-shaped seedlings are placed.

5. A plurality of operation cables are provided to transmit power from the minority row motor to the plurality of fertilization minority row clutches, The riding rice transplanter according to claim 4, wherein the plurality of operating cables are routed along one side of the seedling loading platform in the left-right direction of the machine body.

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