Rice seedling transplanting machine

Abstract

Provided is a seedling transplanting machine having a lightweight and simple structure of a preliminary seedling placement unit. The seedling transplanting machine is characterized in that the preliminary seedling placement unit has: a support frame; and a plurality of preliminary seedling placement tables supported to the support frame via a link mechanism having a plurality of link arms, the support frame having: a single longitudinal frame arranged to extend upward with respect to a vehicle frame of a traveling vehicle body; and a lateral frame installed to an upper end portion of the longitudinal frame in a manner of extending along the vehicle frame, the link mechanism having two link arms each supporting the plurality of preliminary seedling placement tables so as to be rotatable, the preliminary seedling placement unit having at least three or more layers of the preliminary seedling placement tables, the plurality of link arms being two link arms arranged in parallel to each other, and the two link arms each being connected to two pivots provided to the lateral frame of the support frame at a middle portion thereof, respectively.

Description

Technical Field

[0001] This invention relates to a seedling transplanting machine. Background Technology

[0002] Previously, it was known that seedling transplanting machines used in fields for operations such as transplanting seedlings had multiple movable pre-seedling platforms supported (see, for example, Patent Document 1). These pre-seedling platforms were supported on the support frame via a linkage mechanism in a manner that allowed them to switch between a stacked state overlapping vertically and an unfolded state unfolding horizontally.

[0003] By deploying multiple seedling trays, when loading seedlings from the outside of the machine, the upper or lower seedling trays move to the front of the machine and become track-like, making it easy to load seedlings.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2013-165739

[0007] However, the existing pre-seedling carriers disclosed in Patent Document 1 are typically supported by two support frames erected from the side of the machine body. Furthermore, for example, if the multiple pre-seedling carriers are three-layered, the linkage mechanism supporting these pre-seedling carriers has a first linkage arm connecting all three layers of pre-seedling carriers, a second linkage arm connecting the upper and middle layers, and a third linkage arm connecting the middle and lower layers.

[0008] This makes the support mechanism of the seedling carrier platform more complex and increases the number of parts, thus increasing the weight. Summary of the Invention

[0009] The present invention was made in view of the above circumstances, and its object is to provide a seedling transplanter having a lightweight and simple pre-seedling carrier.

[0010] To solve the above-mentioned problems and achieve the objective, the seedling transplanter 1 of the present invention is characterized in that the seedling transplanter 1 includes: a traveling body 2 having traveling devices 14 and 15; a seedling planting section 16 connected to the rear of the traveling body 2; a pre-seedling loading section 9 provided on the side of the traveling body 2; and a seedling loading section connecting section 300 connecting the pre-seedling loading section 9 to the body frame 30 of the traveling body 2, wherein the pre-seedling loading section 9 has: a support frame 98; and a linkage mechanism 90 having multiple linkage arms 94 and 95 supporting the seedlings. The support frame 98 comprises a plurality of pre-planting seedling platforms 91, 92, and 93. The support frame 98 includes: a single longitudinal frame 980, which is configured to extend upward relative to the vehicle frame 30; and a transverse frame 981, which is mounted on the upper end of the longitudinal frame 980 extending along the vehicle frame 20 and supporting the linkage mechanism 90. The seedling placement section connection 300 connects the pre-planting seedling placement section 9 to the vehicle frame 30 via the support frame 98. The seedling placement section connection 300 includes: a support column 310, which is configured to... The vehicle frame 30 extends upwards; and an arm 320, the base of which is rotatably connected to the support column 310, and the end of which is connected to the lower end of the longitudinal frame 980. The arm 320, via the longitudinal frame 980, rotates the plurality of pre-seedling carriers 91, 92, 93 from a first position farther from the vehicle frame 30 to a second position closer to the vehicle frame 30. At the first or second position, the longitudinal frame 980 and the support column 310 are configured to form a straight line when viewed from the side. When 91, 92, and 93 are stacked, the rear end of the lower-layer pre-seedling carrier 91 is further behind the rear end of the vehicle body 2 than the rear ends of the upper-layer pre-seedling carriers 92 and 93. A communication hole 982 is formed on the transverse frame 981 of the support frame 98, communicating with the cylindrical longitudinal frame 980. A motor 96 for swinging the linkage mechanism 90 is arranged near the communication hole 982 on the transverse frame 981. Wiring connected to the motor 96 is arranged on the communication hole 982 and the longitudinal frame 980.

[0011] According to the first aspect of the present invention, the seedling transplanter is characterized in that the arm 320 extends in the width direction of the traveling vehicle 2 and is positioned below the linkage mechanism 90. The plurality of pre-seedling carriers 91, 92, and 93 are supported on the support frame 98 via the linkage mechanism 90 in a manner that allows them to switch between a stacked state overlapping in the vertical direction and an unfolded state unfolding in the front-back direction. In either the stacked state or the unfolded state, they are positioned above the arm 320.

[0012] A third aspect of the present invention is a seedling transplanting machine according to the second aspect of the present invention, characterized in that, when the linkage mechanism 90 is operated, the plurality of linkage arms 94, 95 constituting the linkage mechanism 90 abut against each other to restrict the posture of the plurality of prepared seedling carriers 91, 92, 93 to the unfolded state.

[0013] The fourth aspect of the present invention is a seedling transplanting machine according to any one of the first to third aspects of the present invention, characterized in that the linkage mechanism 90 has two linkage arms 94 and 95, and the two linkage arms 94 and 95 support the plurality of prepared seedling carriers 91, 92 and 93 so that they can rotate freely.

[0014] Invention Effects

[0015] According to the present invention, a seedling transplanter having a lightweight and simple pre-seedling carrier can be provided. Attached Figure Description

[0016] Figure 1 This is a side view of the seedling transplanter according to the implementation method.

[0017] Figure 2 This is a block diagram of the aforementioned seedling transplanter.

[0018] Figure 3 This is a left-side view of the pre-planted seedling placement section in the embodiment.

[0019] Figure 4 This is a right-side view of the pre-planted seedling placement section in the embodiment.

[0020] Figure 5 This is a left-side view showing the unfolded state of the preparatory seedling placement section according to the embodiment.

[0021] Figure 6 This is a perspective view of the pre-planted seedling placement section in the implementation method.

[0022] Figure 7 This is an explanatory diagram of the preparatory seedling placement section of the implementation method.

[0023] Label Explanation

[0024] 1: Seedling transplanter; 2: Traveling vehicle body; 9: Seedling preparation loading section; 14: Front wheel (travel device); 15: Rear wheel (travel device); 16: Seedling planting section; 30: Vehicle frame; 90: Linkage mechanism; 91: Lower seedling preparation platform; 92: Middle seedling preparation platform; 93: Upper seedling preparation platform; 94: First link arm; 95: Second link arm; 98: Support frame; 300: Seedling loading section connection; 310: Support column; 320: Arm body; 941: Lower rotating shaft; 951: Lower rotating shaft; 942: Middle rotating shaft; 952: Middle rotating shaft; 943: Upper rotating shaft; 953: Upper rotating shaft; 944: Pivot; 954: Pivot; 980: Longitudinal frame; 981: Transverse frame; 982: Connecting hole. Detailed Implementation

[0025] Hereinafter, embodiments of the seedling transplanter of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments. Furthermore, the structural elements in the following embodiments include structural elements that can be easily replaced by those skilled in the art or are substantially the same.

[0026] Figure 1 This is a side view of the seedling transplanter 1 according to the embodiment. Furthermore, in the following description, the directional references for front-back and left-right are defined based on the forward direction of the vehicle as viewed from the operator's seat.

[0027] like Figure 1 As shown, the driving body 2 of the seedling transplanter 1 has a pair of front wheels 14 on the left and right and a pair of rear wheels 15 on the left and right. Furthermore, a seedling planting section 16 is located at the rear of the driving body 2, and this seedling planting section 16 can be raised and lowered by means of a seedling planting section lifting mechanism 3. In addition, the seedling transplanter 1 of this embodiment is a four-wheel drive vehicle where all wheels (front wheels 14 and rear wheels 15) can be driven during driving; however, it can also be a two-wheel drive vehicle.

[0028] The vehicle body 2 has a power unit 4 mounted on a body frame 30, which is located approximately at the center of the vehicle body. The power unit 4 includes: an engine 8 disposed below a driver's seat 12, which is located approximately at the center of the driver's section 10 in the left-right direction of the vehicle body 2; and a power transmission device (described later) that transmits the power of the engine 8 to the drive wheels and the seedling transplanting section 16. That is, in the seedling transplanter 1 of this embodiment, the power of the engine 8 is used not only to propel the vehicle body 2 forward or backward, but also to drive the seedling transplanting section 16. The engine 8 is a heat engine such as a diesel engine or a gasoline engine.

[0029] The engine 8 is mounted on the vehicle frame 30 with its protrusion extending upwards from the footrest 11 where the operator sits. An engine cover 5 is provided on the protruding part to cover the engine 8. The footrest 11 is positioned between the front of the vehicle body 2 and the rear of the engine 8, and part of it is grid-shaped, which allows mud attached to shoes to fall onto the field.

[0030] Furthermore, the power transmission device for the power unit 4 includes a hydraulic continuously variable transmission (CVT) 6 as the main transmission, a belt-type power transmission mechanism 7, and a gearbox 70. The belt-type power transmission mechanism 7 transmits power from the engine 8 to the hydraulic CVT 6. The gearbox 70 divides the output from the engine 8 into driving power for the front wheels 14 and the rear wheels 15, and driving power for the seedling planting unit 16.

[0031] The hydraulic continuously variable transmission 6 is a hydrostatic continuously variable transmission known as HST (Hydro Static Transmission). The hydraulic continuously variable transmission 6 generates hydraulic pressure using a hydraulic pump driven by power from the engine 8, and then converts this hydraulic pressure into mechanical force (rotational force) for output using a hydraulic motor. This hydraulic continuously variable transmission 6 is configured to allow switching between the magnitude and direction of the driving output via the operation of a gear lever located on the control unit 13.

[0032] Furthermore, the belt-type power transmission mechanism 7 includes a pulley mounted on the output shaft of the engine 8, a pulley mounted on the input shaft of the hydraulic continuously variable transmission 6, a belt wound around these two pulleys, and a tension pulley for adjusting the tension of the belt. Thus, the belt-type power transmission mechanism 7 can transmit the power generated by the engine 8 to the hydraulic continuously variable transmission 6 via a belt.

[0033] A portion of the driving power output from the gearbox 70 is transmitted to the front wheels 14 via the left and right front wheel final drive boxes 31, and the remainder is transmitted to the rear wheels 15 via the left and right rear wheel gearboxes 32. The left and right front wheel final drive boxes 31 are located on the left and right sides of the gearbox 70, and the left and right front wheels 14 are connected to the left and right front wheel final drive boxes 31 via axles. Furthermore, the front wheel final drive boxes 31 are driven by the steering operation of the handle 18, enabling the front wheels 14 to steer. Similarly, the rear wheels 15 are connected to the left and right rear wheel gearboxes 32 via axles. On the other hand, the driving power is transmitted to the planting clutch (not shown) located at the rear of the vehicle body 2. When the planting clutch is engaged, the power is transmitted to the seedling planting section 16 via the planting drive shaft (not shown).

[0034] Furthermore, in the vehicle body 2, an operating unit 13 is provided in front of the driver's seat 12 and at the center of the front side of the vehicle body 2. The operating unit 13 is provided to protrude upward from the bottom surface of the pedal 11 of the driver's seat 10, dividing the front side of the pedal 11 into left and right sections.

[0035] The control unit 13 is equipped with a fuel tank, which stores fuel supplied to various operating devices and the engine 8. Various control levers or measuring instruments for operating the devices, as well as a handle 18, are located on the upper part of the control unit 13. The handle 18 is a steering component used by the operator to steer the front wheels 14, thereby controlling the vehicle body 2. The front wheels 14 can be turned via the operating devices within the control unit 13.

[0036] In addition, as a control lever, there are driving operation components, namely the gear shift lever described later, which can perform speed change operations on the forward and backward movement and driving speed of the driving vehicle 2, and planting operation components, namely the planting lifting lever, which can switch the operation state of the seedling planting part 16 based on at least the rising state of the seedling planting part lifting mechanism 3.

[0037] Furthermore, the seedling planting section lifting mechanism 3, which raises and lowers the seedling planting section 16 located at the rear of the vehicle body 2, has a lifting linkage device 33, through which the seedling planting section 16 is mounted to the vehicle body 2. This lifting linkage device 33 has two linkage members extending in a generally front-rear direction, serving as a parallel linkage mechanism connecting the rear of the vehicle body 2 and the seedling planting section 16. Specifically, it has an upper linkage 34 located on the upper side and a lower linkage 35 located below the upper linkage 34. A pair of these upper linkages 34 and lower linkages 35 are provided on each side.

[0038] These upper connecting rods 34 and lower connecting rods 35 are rotatably connected to a connecting rod base frame 36, which forms a rear frame that is vertically installed at the rear end of the vehicle frame 30 and appears as a gate in rear view. Thus, the other end of each connecting rod is rotatably connected to the seedling planting section 16, thereby enabling the seedling planting section 16 to be connected to the vehicle body 2 in a height-adjustable manner.

[0039] Furthermore, the seedling planting section lifting mechanism 3 has a hydraulic lifting cylinder 37 that extends and retracts by hydraulic pressure. The seedling planting section 16 is raised and lowered by the extension and retraction of this hydraulic lifting cylinder 37. Through this lifting action, the seedling planting section lifting mechanism 3 raises the seedling planting section 16 to a non-operating position or lowers it to a ground-facing operating position (ground-facing planting position).

[0040] Furthermore, the seedling transplanting section 16 has a transplanting device 161 that performs two-row transplanting operations at a time. In this embodiment, the seedling transplanter 1 is set as a so-called six-row transplanting seedling transplanter 1 that transplants seedlings in six rows; however, it may also be a multi-row transplanting seedling transplanter capable of performing four-row, eight-row, or more transplanting operations.

[0041] Furthermore, marking devices 200 and 200 are installed on the left and right sides of the vehicle body 2 in a freely movable manner. These marking devices 200 and 200 form a line indicating the direction of travel for the next planting row. Specifically, the marking devices 200 and 200 are positioned behind the left and right pre-planted seedling carriers 9 and 9, marking the field surface as the seedling transplanter 1 moves in a straight line within the field, indicating the direction of travel after turning around at the field boundary. Additionally, in Figure 1 In the middle, the scribing device 200 is in a retracted upward state, that is, a retracted state. However, for simplicity, the scribing device 200 on the left side is omitted.

[0042] Furthermore, a fertilization device 17 is mounted behind the driver's seat 12 of the vehicle body 2. This fertilization device 17 includes a fertilizer tank 17a for storing fertilizer and a blower 17b for transferring fertilizer from the fertilizer tank 17a to the seedling planting section 16. Additionally, the fertilization device 17 includes a trough maker (not shown) that causes fertilizer transferred from the fertilizer tank 17a via a fertilizer hose (not shown) to fall into a fertilization trough formed near the side of the seedling planting row. The fertilization operation of the fertilization device 17 can be performed simultaneously with the planting operation.

[0043] Furthermore, on the left and right sides of the operating section 13 in the pedal 11, there are pre-loaded seedling holders 9 for pre-loading seedlings for replenishment, and a fertilizer holder 105 for loading fertilizer for replenishing the fertilizer tank 17a. The pre-loaded seedling holders 9 will be described in detail later, but they have three pre-loaded seedling holders 91, 92, and 93 arranged in a stacked state along the longitudinal direction and in a roughly horizontal state along the transverse direction. In addition, the holder 105 can, for example, hold a 20 kg fertilizer bag.

[0044] Figure 2 This is a block diagram of seedling transplanter 1. (For example...) Figure 2As shown, the control device 100 of the seedling transplanter 1 includes a control unit 101 and a storage unit 102. The control unit 101 is composed of an arithmetic unit such as a CPU (Central Processing Unit), and the storage unit 102 is composed of ROM (Read Only Memory) and RAM (Random Access Memory). The storage unit 102 stores a computer program that controls the overall operation of the seedling transplanter 1, starting with the drive of the pre-seedling loading unit 9. By reading this computer program, the control device 100 functions as the control unit 101, performing various prescribed processes.

[0045] In addition to the seedling preparation unit 9, the control device 100 is also connected to various actuators 140, including the drive motors of the aforementioned hydraulic lifting cylinder 37 and blower 17b. Furthermore, the control device 100 is connected to the seedling preparation unit operation switch 110, various switches 120, and various sensors 130.

[0046] The change in posture between the stacked state and the approximately horizontal state of the seedling carrier 9 is achieved electrically. As shown in the figure, the linkage mechanism 90 is activated by the motor 96 controlled by the control device 100, and the posture of the seedling carriers 91, 92, and 93 changes.

[0047] The seedling loading unit operation switch 110 is located near the driver's seat 12, which is located in the driver's compartment 10. For example, the seedling loading unit operation switch 110 can be located in the control compartment 13. In addition to the seedling loading unit operation switch 110, various switches 120 for connecting / disconnecting various devices are also provided near the driver's seat 12. Furthermore, various sensors 130 include seedling depletion sensors, fertilizer sensors, etc.

[0048] Below, refer to Figures 3-7 To explain in more detail section 9, which is the preparatory seedling placement section. Figure 3 This is a left-side view of the seedling placement section 9. Figure 4 This is a right-side view of the preparatory seedling placement section 9. Furthermore, Figure 5 This is a left-side view showing the unfolded state of the preparatory seedling placement section 9. Figure 6 This is a three-dimensional view of section 9, which is intended for planting seedlings. Furthermore, Figure 7 This is an explanatory diagram of section 9, which is for preparing seedlings for planting. Additionally, in... Figure 7 The loading platform 105 for loading fertilizer bags is omitted.

[0049] like Figure 3 and Figure 4As shown, the seedling preparation unit 9 has three seedling preparation platforms 91, 92, and 93, a linkage mechanism 90, and a support frame 98.

[0050] The linkage mechanism 90 has two linkage arms, namely the first linkage arm 94 and the second linkage arm 95. These two linkage arms 94 and 95 pivotally support the three pre-planted seedling platforms 91, 92 and 93, allowing them to rotate freely.

[0051] That is, such as Figure 7 As shown, the lower-level seedling carrier 91 is supported by the first support body 910, the middle-level seedling carrier 92 is supported by the second support body 920, and the upper-level seedling carrier 93 is supported by the third support body 930. Furthermore, a handle 911 is integrally formed at the rear end of the first support body 910 to assist the driver in getting in and out of the driver's seat 12 (see reference). Figure 1 ).

[0052] Furthermore, the first support 910 is rotatably connected to the lower ends of the first link arm 94 and the second link arm 95, the second support 920 is rotatably connected to the middle part of the first link arm 94 and the second link arm 95, and the third support 930 is rotatably connected to the upper ends of the first link arm 94 and the second link arm 95.

[0053] That is, such as Figure 7 As shown, the first support body 910 and the first link arm 94 are rotatably connected via a first lower-level rotation shaft 941, and the first support body 910 and the second link arm 95 are rotatably connected via a second middle-level rotation shaft 951. Furthermore, the second support body 920 and the first link arm 94 are rotatably connected via a first middle-level rotation shaft 942, and the second support body 920 and the second link arm 95 are rotatably connected via a second middle-level rotation shaft 952. Additionally, the third support body 930 and the first link arm 94 are rotatably connected via a first upper-level rotation shaft 943, and the third support body 930 and the second link arm 95 are rotatably connected via a second upper-level rotation shaft 953.

[0054] The support frame 98 is generally T-shaped and consists of a single longitudinal frame 980 and a transverse frame 981. The single longitudinal frame 980 is configured to extend upward relative to the vehicle body frame 30 of the traveling vehicle body 2, and the transverse frame 981 is mounted on the upper end of the longitudinal frame 980. The transverse frame 981 extends along the vehicle body frame 30 in the longitudinal direction and supports two linkage arms (first linkage arm 94 and second linkage arm 95) of the linkage mechanism 90. That is, the first linkage arm 94 and the second linkage arm 95 are respectively connected at the midpoint to two pivots 944 and 954 provided on the transverse frame 981.

[0055] Thus, lower-level rotating shafts 941 and 951 are respectively provided at the lower ends of the first link arm 94 and the second link arm 95, and the lower-level seedling carrier 91 is rotatably connected via the lower-level rotating shafts 941 and 951. Furthermore, upper-level rotating shafts 943 and 953 are respectively provided at the upper ends of the first link arm 94 and the second link arm 95, and the upper-level seedling carrier 93 is rotatably connected via the upper-level rotating shafts 943 and 953. Moreover, middle-level rotating shafts 942 and 952 are respectively provided at the middle positions of the first link arm 94 and the second link arm 95, between the pivot 944 (954) and the upper-level rotating shaft 943 (953), and the middle-level seedling carrier 92 is rotatably connected via the middle-level rotating shafts 942 (952).

[0056] The support frame 98 is connected to the vehicle frame 30 via the seedling placement section connecting part 300. That is, the seedling transplanter 1 has a seedling placement section connecting part 300, which connects the prepared seedling placement part 9 to the vehicle frame 30 via the support frame 98.

[0057] like Figure 6 As shown, the seedling placement connecting part 300 has a base end and a vehicle frame 30 (see reference). Figure 1 The horizontal extension 340 is connected to the horizontal extension 340, the support column 310 is vertically erected from the end of the horizontal extension 340, and the arm 320 is rotatably connected to the support column 310.

[0058] That is, the support column 310 is configured to extend upward relative to the vehicle frame 30. On the other hand, the base end of the arm 320 is rotatably connected to the support column 310, and its end is connected to the lower end of the longitudinal frame 980, allowing the longitudinal frame 980 to rotate from a first position farther from the vehicle frame 30 to a second position closer to the vehicle frame 30. A connection is formed at the base end of the horizontal extension 340 with the vehicle frame 30 (see reference 30). Figure 1 ) The connecting flange 26.

[0059] In addition, the horizontal extension 340 and the support column 310 are described here as separate parts. However, the support column 310 can also be an L-shaped cylindrical body with a flange 26 at the base end.

[0060] In the above structure, the longitudinal frame 980 and the support column 310, both formed by a single rectangular tube, are configured such that, when viewed from the side at position 1 or position 2, they form a straight line extending longitudinally (see reference). Figures 3-5 ).

[0061] Furthermore, the arm 320, which is rotatably connected to the support column 310, is configured such that its base end is rotatably connected to the rotating part 330 located at the upper end of the support column 310, and can be locked in place by a stop pin at each predetermined angle (e.g., 90 degrees). In this way, when operating as a seedling transplanter 1, the pre-seedling loading part 9 is located in a first position further away from the vehicle frame 30. On the other hand, when the seedling transplanter 1 is placed in a truck bed or stored in a warehouse, the pre-seedling loading part 9 is located in a second position closer to the vehicle frame 30, so as not to interfere with surrounding objects.

[0062] The boom 320 extends obliquely relative to the width of the traveling vehicle 2 and is positioned below the linkage mechanism 90. Furthermore, the three seedling carriers 91, 92, and 93 are stacked in an overlapping manner along the vertical direction (see reference). Figure 3 ) and the unfolded state along the front and back direction (refer to Figure 5 In any state, it is located above the arm body 320.

[0063] Therefore, for example, the positions of the mechanism that moves the pre-seedling carrier 9 relative to the traveling vehicle 2 in the front-rear direction, such as the linkage mechanism 90, and the mechanism that rotates the pre-seedling carrier 9 relative to the traveling vehicle 2, such as the arm 320 connected to the rotating part 330, are completely separated. Therefore, the overall structure can be simplified, and correspondingly, the strength can be expected to be improved.

[0064] However, regarding the seedling placement unit 9 of this embodiment, when the linkage mechanism 90 is activated to be in the unfolded state, the two linkage arms constituting the linkage mechanism 90 (the first linkage arm 94 and the second linkage arm 95) abut against each other, thereby restricting the posture of the three seedling placement platforms 91, 92, and 93 to the unfolded state.

[0065] Therefore, there is no need to install additional stoppers or other components to keep the seedling carriers 91, 92, and 93 in an unfolded state. This simplifies the structure and reduces the number of components, thus contributing to cost reduction.

[0066] However, as Figure 6 As shown, a connecting hole 982 is formed on the upper surface of the horizontal frame 981 of the support frame 98, which communicates with the hollow portion of the vertical frame 980, which is formed in the shape of a square tube. Moreover, a motor 96 for swinging the linkage mechanism 90 is provided on the upper side of the horizontal frame 981, along with a fan-shaped gear 97, in a manner located near the connecting hole. The gear 97 meshes with the rotation shaft of the motor 96 and rotates.

[0067] According to this structure, the wiring harness, including the wiring connected to the motor 96, can be gathered from the connecting hole 982 through the internal arrangement of the longitudinal frame 980, preventing interference between the wiring harness and the connecting arms 94 and 95. Furthermore, it does not compromise the aesthetics.

[0068] In addition, the base end of the sector gear 97 is fixed to the pivot 954, the second link arm 95 rotates along with the rotation of the gear 97, and at the same time, the first link arm 94 also rotates in the same direction as the second link arm 95.

[0069] In addition, such as Figure 7 As shown, the rear end position P1 of the lower-level seedling carrier 91 is further behind the vehicle body 2 than the rear ends P2 and P3 of the upper-level seedling carriers 92 and 93. In this embodiment, the rear end of the seedling carrier 91 gradually moves closer to the rear from the upper to the lower level.

[0070] According to this structure, the space between the lower layer of the seedling carrier 91 and the middle layer of the seedling carrier 92, as well as the space between the middle layer of the seedling carrier 92 and the upper layer of the seedling carrier 93, is expanded, so that the seedlings can be easily taken out from the lower seedling carrier 91 (92).

Claims

1. A seedling transplanting machine, characterized in that, The seedling transplanter comprises: a traveling body (2) with a traveling device (14, 15); a seedling planting section (16) connected to the rear of the traveling body (2); a pre-seedling placement section (9) provided on the side of the traveling body (2); and a seedling placement section connecting section (300) connecting the pre-seedling placement section (9) to the body frame (30) of the traveling body (2). The pre-seedling carrier (9) has: a support frame (98); and a plurality of pre-seedling carriers (91, 92, 93) supported on the support frame (98) via a linkage mechanism (90) having two linkage arms (94, 95). The support frame (98) has: a single longitudinal frame (980) configured to extend upward relative to the vehicle frame (30); and a transverse frame (981) mounted at the upper end of the longitudinal frame (980) in a manner extending along the vehicle frame (30) to support the linkage mechanism (90). The seedling carrier connecting part (300) connects the pre-seedling carrier part (9) to the vehicle frame (30) via the support frame (98). The seedling carrier connecting part (300) includes: a support column (310) configured to extend upward relative to the vehicle frame (30); and an arm (320) whose base end is rotatably connected to the support column (310) and whose end end is connected to the lower end of the longitudinal frame (980). The arm (320) causes the plurality of prepared seedling carriers (91, 92, 93) to rotate from a first position farther from the vehicle frame (30) to a second position closer to the vehicle frame (30) via the longitudinal frame (980). At the first or second position, the longitudinal frame (980) and the support column (310) are configured to form a straight line when viewed from the side. When the seedling carriers (91, 92, 93) are stacked, the rear end of the lower seedling carrier (91) is further behind the rear end of the vehicle body (2) than the rear end of the upper seedling carrier (92, 93). A connecting hole (982) is formed on the transverse frame (981) of the support frame (98) to communicate with the cylindrical longitudinal frame (980). A motor (96) for swinging the linkage mechanism (90) is disposed near the connecting hole (982) on the transverse frame (981). Wiring connected to the motor (96) is arranged on the connecting hole (982) and the longitudinal frame (980). The two connecting arms (94, 95) support the multiple pre-selected seedling carriers (91, 92, 93) so that they can rotate freely. The pre-seedling carrier (9) has at least 3 layers of pre-seedling carriers. The two connecting arms are two parallel connecting arms (94, 95), and the middle of each of the two connecting arms (94, 95) is connected to two pivots (944, 954) of the cross frame (981) of the support frame (98).

2. The seedling transplanter according to claim 1, characterized in that, The arm (320) extends in the width direction of the vehicle body (2) and is positioned below the link mechanism (90). The plurality of seedling carriers (91, 92, 93) are supported on the support frame (98) via the linkage mechanism (90) in a manner that can be switched between a stacked state overlapping in the vertical direction and an unfolded state unfolding in the front-back direction. In either the stacked state or the unfolded state, they are located above the arm body (320).

3. The seedling transplanter according to claim 2, characterized in that, When the linkage mechanism (90) is activated, the two linkage arms (94, 95) constituting the linkage mechanism (90) abut against each other to restrict the posture of the plurality of prepared seedling carriers (91, 92, 93) to the unfolded state.

Images