JP2020005546A - Rice planting machine - Google Patents

Abstract

To provide a rice planting machine that is suppressed in the length along the width direction of a vehicle body, and includes a preliminary seedling supply device.SOLUTION: A rice planting machine 1 includes: a seedling planting device 5 having a seedling placing platform 30 for sliding and moving over a first width along the width direction of a vehicle body; a preliminary seedling supply device 40 provided in a second narrower than a first width, capable of reserving seedling mats, and having a transfer unit 41 capable of switching between a first control condition for conveying the seedling mats reserved to a supply position C supplied to the seedling placing platform 30 and a second control condition for supplying the seedling mats in the supply position C to the seedling placing platform 30; and a control unit 50 for bringing the transfer unit 41 into the second control condition when the seedling placing platform 30 where the seedling mat is supplied is in the supplied position, and bringing the transfer unit 41 into the first control condition after supplying the seedling mats to the seedling placing platform 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rice transplanter for planting seedlings in a field.

  Conventionally, rice transplanters have been used when receiving seedlings in a field. This type of rice transplanter is provided with a seedling mounting table on which a seedling mat formed by collecting seedlings to be planted and a spare seedling mounting table on which a spare seedling mat to be supplied to the seedling mounting table are mounted. I have. The manual supply of the seedling mat from the spare seedling platform to the seedling platform increases the burden on the operator who uses the rice transplanter. (For example, Patent Document 1).

  The automatic seedling replenishing device in the rice transplanter described in Patent Literature 1 is installed at a position having a plurality of seedling platforms moving in the left-right direction and having a plurality of seedling guide surfaces, and a position capable of being aligned with the seedling guide surfaces of the seedling platforms. And a supplementary seedling platform. This automatic seedling replenishing device aligns the guide surface of the seedling platform with the seedling guide surface of the auxiliary seedling platform, and replenishes the seedling guide surface of the auxiliary seedling platform with the guide surface of the seedling platform.

JP-A-1-141517

  In the technique described in Patent Document 1, the number of rows of the seedling mounting table and the auxiliary seedling mounting table is the same, that is, the number of seedling guide surfaces of the auxiliary seedling mounting table and the number of guide surfaces of the seedling mounting table are the same. It is composed of Here, the seedling mounting tables are arranged in the horizontal direction (width direction) by an amount corresponding to the number of rows on which the rice transplanters plant the seedlings. In the case of the technique described in Patent Document 1, the number of seedling mounting tables increases. Then, it is necessary to secure a space for the auxiliary seedling mounting table by that much, and the length along the width direction of the vehicle body becomes longer.

  Therefore, there is a need for a rice transplanter equipped with a spare seedling supply device for storing spare seedlings with a reduced length along the width direction of the vehicle body.

  A characteristic configuration of the rice transplanter according to the present invention is that a seedling mat provided in the rear of the vehicle body, in which a plurality of seedlings are collected and formed into a mat, is placed, and is slid over a first width along the width direction of the vehicle body. A moving seedling platform, and a seedling planting device having a seedling planting mechanism for taking out seedlings from the seedling mats of the slidingly moving seedling stage and planting the seedlings in a field, and the vehicle body in front of the seedling planting device. A plurality of seedling mats are provided in a second width narrower than the first width along the width direction, and a plurality of seedling mats can be stored in a line in the front-rear direction of the vehicle body, and the stored seedling mats are supplied to the seedling mounting table. A preliminary control device for supplying a seedling mat, the transporting device being capable of switching between a first control state of conveying the seedling mat to the supply position to be supplied and a second control state of supplying the seedling mat at the supply position to the seedling mounting table; The supplied seedling platform is covered When in the supply position, the transport unit that supplies the seedling mat to the seedling table is set to the second control state, and after the seedling mat is supplied to the seedling table, the transport unit is controlled to the first control state. And a control unit for setting the state.

  With such a characteristic configuration, since the width of the spare seedling supply device for storing the spare seedlings is smaller than that of the seedling planting device, the width direction of the spare seedling supply device can be made compact. Therefore, the length of the spare seedling supply device along the width direction of the vehicle body can be suppressed, and a rice transplanter including such a spare seedling supply device can be realized. In addition, a spare seedling mat can be placed on the transport unit, and the seedling mat can be automatically supplied to the seedling mounting table. Therefore, the burden on the operator using the rice transplanter can be reduced. Furthermore, since the seedling mat can be supplied to a plurality of seedling mounting stands at the same time, the time required for supplying the seedling mat can be reduced.

  Further, the spare seedling supply device and the seedling planting device may be configured such that a mutual positional relationship is such that a transfer end portion of the transfer unit and an upper end portion of the seedling mounting table are close to each other, and the transfer end portion. It is preferable to be able to switch to a working state in which the upper end and the upper end are separated from each other.

  With such a configuration, the seedling table and the spare seedling supply device are arranged so as to approach each other when supplying seedlings from the spare seedling supply device to the seedling stand, and the spare seedling supply device when not supplying seedlings. It is possible to separate the seedling mounting table so that it does not interfere with each other.

  In addition, before the transport unit is switched to the first control state, the transport unit is moved to a first position set in front of the vehicle body, and before the transport unit is switched to the second control state. Preferably, the apparatus further comprises a moving device for moving the transport unit to a second position set behind the vehicle body with respect to the first position.

  With such a configuration, by moving the transport unit to the front side of the vehicle body when raising the seedling planting device to replenish the seedling mounting stand of the seedling planting device from the transport unit when raising the seedling planting device, Interference with the spare seedling supply device can be prevented. Further, with such a configuration, the transfer unit can be moved in the front-rear direction of the vehicle body by hydraulic or electric power, for example, via a parallel link mechanism by the moving device.

  Further, the seedling planting device is supported so as to be able to move up and down over a working position located on the lower side in the up-down direction of the vehicle body and a non-working position located on the upper side in the up-down direction, and the spare seedling supply device is provided. By moving to the second position and raising the seedling planting device to the non-working position, the spare seedling supply device and the seedling planting device enter the seedling supply state, and the spare seedling supply device Is moved to the first position, and the seedling planting device is lowered to the work position, so that the spare seedling supply device and the seedling planting device are in the working state.

  With such a configuration, when supplying seedlings from the spare seedling supplying device to the seedling placing stand, the spare seedling supplying device is arranged so as to be adjacent to the raised seedling placing stand. It is possible to change the position of the spare seedling supply device so that the and the seedling mounting table do not interfere with each other.

  Alternatively, in the seedling planting apparatus, the seedling planting mechanism is supported in a state where the seedlings can be planted in the field in both the seedling supply state and the working state, and the spare seedling supply apparatus and the seedling planting apparatus. The attaching device may be configured to be in the seedling supply state by moving the transport unit from the first position to the second position.

  With such a configuration, even while the seedling planting mechanism of the seedling planting apparatus is planting seedlings in the field, the spare seedling supply device and the seedling mounting table do not interfere with each other, The spare seedling supply device can be moved so as to be adjacent to the seedling table. Therefore, it is possible to supply the seedling mat to the seedling mounting table without deteriorating the work efficiency.

  Further, the transport unit includes a first transport unit on the front side of the vehicle body and a second transport unit on the rear side of the vehicle body, and the first transport unit is inclined backward and downward. It is preferable that the second transport unit is configured in one of a lowered attitude and a forward lowered attitude that is inclined forward and downward, and the second transport unit is configured in the other attitude of the rear lowered attitude and the front lowered attitude. It is.

  With this configuration, the length of the transport unit in the front-rear direction can be reduced as compared with a case where the transport unit is configured flat. Therefore, a large number of seedling mats can be placed as spares on the transport unit, and the structure can be made compact.

  Further, the vehicle body has a driver seat, the transport units are provided on both sides of the driver seat, and the seedling planting mechanism includes a number of rows in which the transport units are arranged along a width direction of the vehicle body. It is preferable to provide more than the above.

  With such a configuration, a large number of seedlings can be planted at the same time.

It is a side view of the working state of a rice transplanter. It is a top view of the working state of a rice transplanter. It is a side view which shows the replenishment state of the seedling of a rice transplanter. It is a top view which shows the replenishment state of the seedling of a rice transplanter. It is a top view which shows the replenishment state of the seedling of a rice transplanter.

  The rice transplanter according to the present invention is configured so that a seedling mat formed by collecting a plurality of seedlings and forming a mat can be automatically supplied to the seedling planting apparatus. Hereinafter, the rice transplanter 1 of the present embodiment will be described using an eight-row riding rice transplanter as an example.

  Here, in order to facilitate understanding, in the present embodiment, the front-back direction is defined along the traveling direction of the rice transplanter 1 in the working state, and the left-right direction is defined when the rice transplanter 1 is defined. The left and right are defined as viewed in the traveling direction (a state in which the front side in the traveling direction is viewed).

  FIG. 1 shows a side view of the rice transplanter 1, and FIG. 2 shows a top view of the rice transplanter 1. As shown in FIGS. 1 and 2, the rice transplanter 1 includes a lifting cylinder 3 that employs a single-acting hydraulic cylinder at the rear of a traveling vehicle body (an example of a “vehicle”) 2 configured as a four-wheel drive type. A parallel four-link type link mechanism 4 that swings up and down by operation is provided, and an eight-row seedling planting apparatus 5 is connected to the rear end of the link mechanism 4. A fertilizer application device 6 is also mounted on the rear end of the traveling vehicle body 2.

  The traveling vehicle body 2 has an engine 9 mounted on a front frame 8 disposed on the front side of the vehicle body with respect to the front axle case 7 and is provided with an anti-vibration mechanism. The power from the engine 9 is used as a hydrostatic stepless transmission (a main transmission). (Not shown), and the power after shifting by the hydrostatic stepless transmission is branched into a transmission case (hereinafter, referred to as a T / M case) 10 for traveling and working.

  The traveling power is transmitted to the left and right front wheels 11 and the left and right rear wheels 12 via a traveling gear type transmission (not shown) built in the T / M case 10 as a subtransmission. The power for the work is supplied to the seedling planting device 5 via a working gear type transmission (not shown) and a planting clutch (not shown) incorporated in the T / M case 10 as an inter-stock transmission. Is transmitted to To the fertilizer application device 6, the power after shifting by the traveling gear type transmission is transmitted for fertilizer application work.

  A seedling planting device 5 is provided behind the traveling vehicle body 2. The seedling planting device 5 includes a seedling mounting table 30 and a seedling planting mechanism 31. On the seedling mounting table 30, a seedling mat formed by collecting a plurality of seedlings into a mat shape is placed. In the present embodiment, since the rice transplanter 1 is an eight-row riding riding rice transplanter, a seedling mat for up to eight rows can be placed on the seedling mounting table 30. The seedling mounting table 30 is configured to slide over a first width along the width direction of the traveling vehicle body 2. The width direction of the traveling vehicle body 2 is the left-right direction of the rice transplanter 1. The seedling mounting table 30 is configured to reciprocate at a constant stroke in the left-right direction by the operation of a lateral feed mechanism (not shown) by the power for work from the traveling vehicle body 2. In FIG. 2, the maximum width of the reciprocating movement is indicated by the reference symbol A, and the width A corresponds to the first width.

  The seedling planting mechanism 31 takes out the seedlings from the seedling mat of the seedling mounting table 30 that slides and implants them in the field. In the present embodiment, eight rotary seedling planting mechanisms 31 are provided so as to be arranged at predetermined intervals in the left-right direction corresponding to each seedling mat of the seedling mounting table 30. The seedling planting mechanism 31 is configured to take out a predetermined amount of seedlings (planted seedlings) from the lower end of the seedling mounting table 30 and plant and supply the seedlings to a mud portion of a field that is leveled by leveling floats 32 arranged in the left-right direction. I have.

  Each time the seedling table 30 reaches the left and right stroke ends, the belt-type vertical feed mechanism 13 is operated, and each seedling mat placed on the seedling table 30 is moved at a predetermined pitch toward the lower end of the seedling table 30. It is configured to feed vertically.

  The traveling body 2 is provided with a boarding operation unit 20. The boarding driving unit 20 is provided with a steering wheel 21 for front wheel steering and a driver seat 22. In the boarding operation section 20, a boarding step 24 having a narrower left and right width than the fertilizer applicator 6 is laid behind the bonnet 23 covering the engine 9.

  Further, on the left and right sides of the hood 23, a boarding / alighting step 25 for allowing the vehicle to get on and off from the front end of the traveling vehicle body 2 is laid at the same height as the boarding step 24 and connected to the boarding step 24. A rear step 26 that can be used as a stepping board when supplying seedlings to the seedling mounting table 30 or supplying fertilizer to the fertilizer application device 6 is also provided at the rear portion of the traveling vehicle body 2.

  On the outer side of the vehicle body in the lateral direction with respect to the boarding step 24 and the boarding / alighting step 25, an extension step (not shown) for extending the left and right width of the boarding area to be wider than the fertilizer application device 6 has the same step surface. Deployed in state. Behind the left and right expansion steps, there is provided an auxiliary step 28 that can be used as a step when accessing the seedling mounting table 30 or supplying fertilizer to the fertilizer application device 6.

  A preliminary seedling supply device 40 is provided in front of the seedling planting device 5. The spare seedling supply device 40 has a transport unit 41. The transport unit 41 has a belt conveyor 42 that is a belt transport mechanism. In the present embodiment, the transport units 41 are provided in four rows so as to extend in the front-rear direction of the traveling vehicle body 2. Each transport unit 41 can store a plurality of seedling mats arranged in the front-rear direction.

  In the present embodiment, the transport units 41 are provided on both sides of the driver's seat 22. Specifically, on the left side of the driver's seat 22, a first left transfer unit 41L1 is provided adjacent to the driver's seat 22, and a second left transfer unit 41L2 is further provided adjacent to the first left transfer unit 41L1. . On the right side of the driver's seat 22, a first right transport unit 41R1 is provided adjacent to the driver's seat 22, and a second right transport unit 41R2 is further provided adjacent to the first right transport unit 41R1.

  The transport unit 41 is provided in a second width smaller than the first width along the width direction of the vehicle body. The first width is the width given by reference symbol A. The second width is a width from one end of the transport unit 41 in the vehicle width direction to the other end. That is, it is the width from the left end of the second left transport unit 41L2, which is denoted by the reference symbol B in FIG. 2, to the right end of the second right transport unit 41R2.

  As described above, in the present embodiment, eight seedling planting mechanisms 31 are provided side by side in the left-right direction. On the other hand, the transport units 41 are provided in four rows in the left-right direction. Therefore, in the present embodiment, the seedling planting mechanism 31 is provided in a greater number than the number of rows in which the transport units 41 are arranged in the width direction of the traveling vehicle body 2.

  The transport unit 41 includes a first transport unit 45 on the front side of the traveling vehicle body 2 and a second transport unit 46 on the rear side of the traveling vehicle body 2. The first transport unit 45 and the second transport unit 46 are configured such that the belt conveyor 42 is driven independently. The first transport unit 45 is configured in a forward-downward posture inclined forward and downward, and the second transport unit 46 is configured in a backward-downward posture inclined forward and downward. In the present embodiment, the entire area of the second transport unit 46 is not configured in the rearwardly lowered attitude, but is configured in the rearward side in the rearwardly lowered attitude.

  The transport unit 41 is configured to be switchable between a first control state and a second control state. The first control state is a control state in which the stored seedling mat is transported to the supply position C where the seedling mat is supplied to the seedling mounting table 30. The stored seedling mats are the seedling mats placed on the belt conveyors 42 of the respective transport units 41. The supply position C is a position on the seedling table 30 side of the belt conveyor 42. That is, since the seedling table 30 is provided behind the vehicle body when viewed from the belt conveyor 42, the supply position C at which the seedling mat is supplied to the seedling table 30 corresponds to the rear end of the belt conveyor 42. The supply position C is set in each transport unit 41. Therefore, in the first control state, the seedling mat placed on the front side of the belt conveyor 42 can be transported to the supply position C by the belt conveyor 42.

  The second control state is a control state in which the seedling mat at the supply position C is supplied to the seedling mounting table 30. By setting the transport unit 41 to the first control state, the seedling mat on the belt conveyor 42 is transported to the supply position C. In the second control state, after the first control state, the belt conveyor 42 is further driven. Thereby, the seedling mat transported to the supply position C in the first control state can be supplied to the seedling mounting table 30.

  The rice transplanter 1 includes a control unit 50. The control unit 50 controls the seedling planting device 5 and the spare seedling supply device 40. In particular, in the present embodiment, when the seedling table 30 to which the seedling mat is supplied is at the supply position D (see FIG. 3), the control unit 50 supplies the seedling mat to the seedling table 30. Is set to the second control state, and after the seedling mat is supplied to the seedling mounting table 30, the transport unit 41 is set to the first control state.

  The seedling mat is supplied to the seedling mounting table 30 as described above. The seedling mounting table 30 is provided in the seedling planting apparatus 5, and a predetermined amount of seedlings is taken out from the placed seedling mat by the seedling planting mechanism 31 and planted in the field. At this time, as shown in FIG. 1, the seedling mounting table 30 is located near the field together with the seedling planting mechanism 31 and is separated from the transport unit 41 from the viewpoint of increasing the efficiency of the seedling planting operation. On the other hand, when the seedling mat is supplied to the seedling mounting table 30, the seedling mounting table 30 is brought close to the transport unit 41 to facilitate the supply of the seedling mat from the transport unit 41 as shown in FIG. In this way, the position (area) in the world coordinate system where the seedling mounting table 30 is brought close to the transport unit 41 in order to facilitate the supply of the seedling mat from the transport unit 41 corresponds to the supply position D.

  When the size of the seedling mat placed on the seedling mounting table 30 is reduced (the number of seedlings is reduced), the control unit 50 first shifts the seedling mounting table 30 to the supply position D. Whether or not the seedling mat placed on the seedling mounting table 30 has become smaller (whether or not the number of seedlings has decreased) can be detected by, for example, providing a sensor on the seedling mounting table 30 and detecting the sensor. . When shifting the seedling mounting table 30 to the supply position D, the planting of the seedlings by the seedling planting mechanism 31 is stopped, and the link mechanism 4 is moved together with the seedling planting mechanism 31, that is, the entire seedling planting apparatus 5. It is good to lift to the field through. When the seedling mat is supplied to the seedling mounting table 30, the position of the seedling mounting table 30 in the state where the seedling placement device 5 is lifted as shown in FIG.

  As described above, the seedling planting apparatus 5 includes the working position (the position shown in FIG. 1) located below the traveling vehicle body 2 in the vertical direction and the non-working position (the position shown in FIG. 3) located above the traveling vehicle body 2 in the vertical direction. Is supported by the control unit 50 (instruction of the control unit 50) so as to be able to move up and down.

  As illustrated in FIG. 3, when the seedling mounting table 30 is moved to the supply position D, the control unit 50 causes the transport unit 41 that supplies the seedling mat to the seedling mounting table 30 to the second control state. As shown in FIGS. 1 and 2, when the seedling planting mechanism 31 is planting seedlings, the transport unit 41 is positioned at the front side of the traveling vehicle body 2 (corresponding to the “first position” in the present application). ) Located. In this case, since the supply position C of the transport unit 41 is separated from the supply position D, the control unit 50 controls the transport unit 41 so that the supply position C of the transport unit 41 is located above the supply position D. Is brought closer to the seedling planting device 5 lifted by the link mechanism 4 (see FIG. 3). Specifically, before the transport unit 41 is switched to the second control state, the transport unit 41 is moved to a second position set behind the traveling body 2 from the first position. This movement is preferably performed by driving a support mechanism 61 supporting the transport unit 41 by an actuator (an example of a “moving device”) 62. Thus, as shown in FIG. 3, the supply position C of the transport unit 41 can be positioned above the supply position D.

  Here, as described above, the seedling mounting table 30 reciprocates with a constant stroke in the left-right direction when the seedling planting mechanism 31 seeds the seedlings. Therefore, even when the supply position C is positioned above the supply position D as shown in FIG. 3, the position of the traveling vehicle body 2 in the left-right direction may be shifted (that is, the seedlings). There is a possibility that the seedling mounting table 30 to which the mat is supplied and the supply position C of the transport unit 41 that supplies the seedling mat to the seedling mounting table 30 are not aligned in the front-rear direction of the traveling vehicle body 2). Therefore, the control unit 50 positions the seedling planting device 5 in the left-right direction such that the seedling mounting table 30 and the supply position C are arranged along the front-back direction of the traveling vehicle body 2. FIG. 4 is a top view of the rice transplanter 1 in the state where the left-right alignment has been performed in this manner.

  In the present embodiment, as described above, the eight seedling mounts 30 are provided side by side with the traveling vehicle body 2, but here, the first seedling table 71, The second seedling mounting table 72, the third seedling mounting table 73, the fourth seedling mounting table 74, the fifth seedling mounting table 75, the sixth seedling mounting table 76, the seventh seedling mounting table 77, and the eighth seedling mounting table 78 will be described. I do. In the example of FIG. 4, the supply position C and the first seedling placement table 71 raised to the supply position D in the second right transport unit 41R2 are aligned in the front-rear direction by the left-right alignment by the control unit 50. In addition, the supply position C and the second seedling mounting table 72 raised to the supply position D in the first right transfer unit 41R1 are arranged in the front-rear direction. Further, the supply position C in the first left transfer unit 41L1 and the sixth seedling mounting table 76 raised to the supply position D are arranged in the front-rear direction, and the supply position C and the supply position in the second left transfer unit 41L2. The seventh seedling mounting table 77 raised to D is lined up in the front-back direction. Accordingly, when the supply of the seedling mat is requested in at least one of the first seedling mounting table 71, the second seedling mounting table 72, the sixth seedling mounting table 76, and the seventh seedling mounting table 77, It is possible to supply the seedling mat from the transport unit 41 that performs the transfer.

  Further, it is also possible to perform the left-right alignment so that the supply position C and the eighth seedling mounting table 78 raised to the supply position D in the second left transfer unit 41L2 are aligned in the front-rear direction. In such a case, as shown in FIG. 5, the supply position C and the second seedling mounting table 72 raised to the supply position D in the second right transport unit 41R2 are arranged in the front-rear direction, and the first right The supply position C and the third seedling table 73 raised to the supply position D in the transport unit 41R1 are arranged in the front-rear direction. Further, the supply position C in the first left transfer unit 41L1 and the seventh seedling table 77 raised to the supply position D are arranged along the front-rear direction, and the supply position C and the supply position in the second left transfer unit 41L2. The eighth seedling mounting table 78 raised to D is lined up in the front-back direction. Accordingly, when the supply of the seedling mat is requested in at least one of the second seedling mounting table 72, the third seedling mounting table 73, the seventh seedling mounting table 77, and the eighth seedling mounting table 78, It is possible to supply the seedling mat from the transport unit 41 that performs the transfer.

  The control unit 50 may be set to the state shown in FIGS. 4 and 5 according to the seedling mounting table 30 that supplies the seedling mat. After such positioning, the control unit 50 sets the transport unit 41 to the second control state. That is, the belt conveyor 42 of the transport unit 41 that has been aligned with the seedling mounting table 30 that supplies the seedling mat is driven to supply the seedling mat to the aligned seedling mounting table 30.

  When supplying the seedling mat to the seedling mounting table 30 as described above, the control unit 50 first moves the transport unit 41 to the first position (the position in FIG. 1) set in front of the traveling vehicle body 2. . This movement is preferably performed by driving the support mechanism 61 supporting the transport unit 41 by the actuator 62 before the transport unit 41 is switched to the first control state.

  At this time, the seedling mat is not placed at the supply position C of the transport unit 41 that has supplied the seedling mat to the seedling mounting table 30. Therefore, the control unit 50 causes the transport unit 41 to enter the first control state. Thus, the seedling mat can be transported (supplied) to the supply position C of the transport unit 41 that has supplied the seedling mat.

  In this way, the preliminary seedling supply device 40 and the seedling planting device 5 are configured such that the mutual positional relationship can be switched between the seedling supply state and the work state. The spare seedling supply device 40 is moved to the second position, and the seedling planting device 5 is raised to the non-working position, so that the transport end portion of the transport unit 41, that is, the supply position C, and the upper end portion of the seedling mounting table 30 And will lean against each other. As a result, the spare seedling supply device 40 and the seedling planting device 5 enter a seedling supply state in which the seedling mat can be supplied from the transport unit 41 to the seedling mounting table 30.

  On the other hand, the spare seedling supply device 40 is moved to the first position, and the seedling planting device 5 is lowered to the work position, so that the transport end portion of the transport unit 41, that is, the supply position C, and the upper end of the seedling mounting table 30 The parts will be separated from each other. Accordingly, the spare seedling supply device 40 and the seedling planting device 5 enter an operation state in which the seedling planting mechanism 31 can plant a seedling. Thus, in the present embodiment, the spare seedling supply device 40 and the seedling planting device 5 are supported so as to be relatively movable with respect to each other.

  It is preferable that the belt conveyor 42 of the transport unit 41 controls the drive timing by detecting the presence or absence of a seedling mat with a switch. For each of the first transport unit 45 and the second transport unit 46, a sensor for detecting a seedling mat (for example, a switch pressed by the seedling mat when the seedling mat is present) is provided, and the output of this sensor is provided. It is preferable that the driving of the belt conveyor 42 is controlled according to the result.

  This sensor may be provided, for example, on the transport start end side and the transport end side of the first transport unit 45 and the second transport unit 46, respectively, on the transport side (hereinafter referred to as "front side") of the seedling mat. Further, it may be provided on the side of the first transport unit 45 and the second transport unit 46 where the seedling mat is not transported (hereinafter referred to as “back side”).

  By configuring the rice transplanter 1 as described above, the length of the spare seedling supply device 40 along the width direction of the traveling vehicle body 2 can be suppressed, and the seedling mat can be automatically placed on a large number of seedling platforms 30. It becomes possible to supply. Therefore, it is possible to reduce the burden on the operator who uses the rice transplanter 1.

[Other embodiments]
In the above embodiment, the transport unit 41 has the belt conveyor 42 as a belt transport mechanism. However, the transport unit 41 may be a chain-type transport mechanism.

  In the above embodiment, when the supply of the seedling mat is requested in at least one of the first seedling mounting table 71, the second seedling mounting table 72, the sixth seedling mounting table 76, and the seventh seedling mounting table 77, Can supply the seedling mat from the corresponding transport unit 41, and can supply at least one of the second seedling mounting table 72, the third seedling mounting table 73, the seventh seedling mounting table 77, and the eighth seedling mounting table 78. In the above description, when the supply of the seedling mat is requested, it is possible to supply the seedling mat from the corresponding transport unit 41. It is also possible to configure so that the seedling mat can be automatically supplied. In such a case, for example, the fourth seedling mounting table 74 and the fifth seedling mounting table 75 are configured to be slidable along the left-right direction of the traveling vehicle body 2 more than in FIGS. The fifth seedling mounting table 75 can be arranged along one of the first left transport unit 41L1, the second left transport unit 41L2, the first right transport unit 41R1, and the second right transport unit 41R2 along the front-rear direction of the traveling vehicle body 2. It is good to configure as follows.

  Further, in the above embodiment, the seedling planting apparatus 5 is described as being for eight rows, but may be less than eight rows or more than eight rows. Further, the transport units 41 are described as an example in which the transport units 41 are arranged in four rows in the width direction of the traveling vehicle body 2, but may be less than four rows or more than four rows.

  In the above embodiment, the preliminary seedling supply device 40 and the seedling planting device 5 are described as being supported so as to be relatively movable with each other and can be switched between the seedling supply state and the work state. The implanting devices 5 may be connected and fixed to each other, and may be configured to be integrally movable.

  In the above embodiment, before the transport unit 41 is switched to the first control state, the actuator 62 moves the transport unit 41 to the first position set in front of the traveling vehicle body 2, and the transport unit 41 performs the second control. Before switching to the state, it has been described that the transport unit 41 is moved to the second position set behind the traveling vehicle body 2 from the first position. However, the actuator 62 moves the transport unit 41 to the first position. After that, the transport unit 41 may be configured to be switched to the first control state.

  In the above embodiment, the seedling planting device 5 is described as being supported so as to be able to move up and down over a working position located below the traveling vehicle body 2 in the vertical direction and a non-working position located above the traveling vehicle body 2 in the vertical direction. However, the seedling planting apparatus 5 can be configured so as not to be able to move up and down. In such a case, the seedling planting device 5 supports the seedling planting mechanism 31 in both the seedling replenishment state and the work state so that the seedlings can be planted in the field, and the spare seedling supplying device 40 and the seedling planting device 5 It is preferable that the transport unit 41 be moved from the first position to the second position to be in a seedling supply state. With this configuration, when the spare seedling supply device 40 approaches the seedling planting device 5 at the work position, the positional relationship between the spare seedling feeding device 40 and the seedling planting device 5 can be switched to the seedling supply state. it can. That is, for example, when the transport unit 41 of the spare seedling supply device 40 reaches the second position, the transport end portion of the transport unit 41 and the upper end of the seedling mounting table 30 can be configured to be close to each other. The seedling mat can be supplied to the seedling mounting table 30 even while the mechanism 31 is planting the seedlings in the field. Therefore, it is possible to replenish the seedling mat without deteriorating the work efficiency of the rice transplanter 1. Note that whether or not the transport unit 41 has reached the second position may be detected based on the control amount of the actuator 62, or a sensor may be separately provided to detect the position of the transport unit 41. Is also good.

  In the above embodiment, the transport unit 41 has been described as being configured to include the first transport unit 45 on the front side of the traveling vehicle body 2 and the second transport unit 46 on the rear side of the traveling vehicle body 2. The unit 41 can be composed of a single transport unit, or can be composed of three or more transport units.

  In the above-described embodiment, the first transport unit 45 has been described as being configured in a forward-lowering posture inclined forward and downward, and the second transport unit 46 has been described as being configured in a backward-downward attitude inclined backward and downward. It is also possible that the one transport unit 45 is configured in a rearward-downward posture inclined backward and downward, and the second transport unit 46 is configured in a front-downward posture inclined forward and downward.

  In the above embodiment, the transport unit 41 has been described as being provided on both sides of the driver's seat 22. However, the transport unit 41 may be configured to be provided only on one of both sides of the driver's seat 22. Alternatively, the transport unit 41 may not be provided on both sides of the driving seat 22 but may be provided on the rear side of the driving seat 22. Further, a storage unit for storing the spare seedling mat separately from the transport unit 41 is provided, and the storage unit is configured to replenish the transport unit 41 with the transport unit 41 at least one of automatically and manually. Is also possible. Such a storage unit may be provided, for example, so as to be stacked on the front side of the transport unit 41.

  In the above-described embodiment, the seedling planting mechanism 31 has been described as being provided with more transport units 41 than the number of rows arranged along the width direction of the traveling vehicle body 2. It is also possible to provide 41 or less than the number of rows arranged along the width direction of the traveling vehicle body 2.

  In the above embodiment, the rice transplanter 1 is described as an example of an eight-row riding rice transplanter. However, the present invention can be applied to a non-ride type rice transplanter.

  INDUSTRIAL APPLICABILITY The present invention can be used for a rice transplanter for planting seedlings in a field.

1: Rice transplanter 2: Running body (body)
5: Seedling plant 22: Operation seat 30: Seedling table 31: Seedling planting mechanism 40: Spare seedling supply device 41: Transport unit 45: First transport unit 46: Second transport unit 50: Control unit 62: Actuator (Mobile equipment)
A: First width B: Second width C: Supply position D: Supply position

Claims (7)

A seedling mat, which is provided at the rear of the vehicle body and is formed by collecting a plurality of seedlings and forming a mat, is placed, and the seedling mounting table slides over a first width along the width direction of the vehicle body, and the sliding movement. A seedling planting device having a seedling planting mechanism for taking out seedlings from the seedling mat of the seedling mounting table and planting the seedlings in a field;
A plurality of seedling mats are provided in front of the seedling planting device within a second width smaller than the first width along the width direction of the vehicle body, and a plurality of seedling mats can be stored in a line in the front-rear direction of the vehicle body. A transfer unit that is switchable between a first control state for transferring the seedling mat to a supply position for supplying the seedling mat to the seedling table and a second control state for supplying the seedling mat at the supply position to the seedling table. A spare seedling supply device having
When the seedling table to which the seedling mat is supplied is at a supply position, the transport unit that supplies the seedling mat to the seedling table is set to the second control state, and the seedlings to the seedling table are A control unit that causes the transport unit to be in the first control state after the supply of the mat;
Rice transplanter equipped with   The preliminary seedling supply device and the seedling planting device, the positional relationship between each other, the seedling replenishment state where the transfer end portion of the transfer unit and the upper end of the seedling mounting table are close to each other, and the transfer end portion and the transfer end portion. The rice transplanter according to claim 1, wherein the rice transplanter can be switched to a work state in which an upper end portion is separated from each other.   Before the transport unit is switched to the first control state, the transport unit is moved to a first position set in front of the vehicle body, and before the transport unit is switched to the second control state, 3. The rice transplanter according to claim 2, further comprising a moving device configured to move the transport unit to a second position set behind the vehicle body with respect to the first position. 4. The seedling planting device is supported so as to be able to ascend and descend over a working position located on the lower side in the vertical direction of the vehicle body and a non-working position located on the upper side in the vertical direction,
The spare seedling supply device is moved to the second position, and the seedling planting device is raised to the non-working position, whereby the spare seedling supply device and the seedling planting device enter the seedling supply state. Moving the spare seedling supply device to the first position and lowering the seedling planting device to the work position, whereby the spare seedling supply device and the seedling planting device enter the working state. Item 7. A rice transplanter according to item 3. The seedling planting device, the seedling planting mechanism is supported in both the seedling supply state and the working state in a state where the seedlings can be planted in the field,
4. The rice transplanter according to claim 3, wherein the spare seedling supply device and the seedling planting device enter the seedling supply state when the transport unit is moved from the first position to the second position. 5. The transport unit includes a first transport unit on the front side of the vehicle body and a second transport unit on the rear side of the vehicle body,
The first transport unit is configured to have one of a rearward-downward posture tilted rearward and a front-downward posture inclined forwardly,
The rice transplanter according to any one of claims 1 to 5, wherein the second transport unit is configured to have the other of the rearward-downward posture and the frontward-downward posture. The vehicle body has a driver seat,
The transport unit is provided on both sides of the driver's seat,
The rice transplanter according to any one of claims 1 to 6, wherein in the seedling planting mechanism, the number of the transport units is greater than the number of rows arranged along the width direction of the vehicle body.

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