JP3678001B2 - Seedling transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seedling transplanting machine including a seedling supply device that supplies seedlings that are manually supplied to a seedling planting device.
[0002]
[Prior art]
As a vegetable seedling transplanter, for example, a turntable type seedling supply device is manually replenished with vegetable pot seedlings, and the seedling supply device supplies seedlings one by one to a seedling planting device at a predetermined position. There is a vegetable seedling transplanter configured to attach the seedling to the ground. Conventionally, this type of vegetable transplanting machine uses a seedling supply device for seedlings on a seedling mounting stand provided in the vicinity of the seedling supply device while an operator walks on either the left or right side of the aircraft as the aircraft progresses. It was supposed to be replenished.
[0003]
[Problems to be solved by the invention]
The conventional vegetable transplanting machine has a so-called single-row planting configuration, but there are many fields in which a plurality of 2-4 strips are planted and cultivated. In that case, it is possible to arrange a plurality of sets of a seedling planting device and a seedling supply device in the vegetable transplanter in the horizontal direction of the machine body. At the same time, by arranging a plurality of seedling planting devices and seedling supply devices in the horizontal direction of the aircraft, seedling supply can be performed on the seedling supply device on the side closer to the aircraft, but the seedling supply device on the remote side The seedling could not be replenished, and it was necessary for two people to replenish the seedling from both the left and right sides of the aircraft. In addition, if the number is three or more, seedlings cannot be replenished to the center seedling feeder even from the left and right sides of the aircraft.
[0004]
[Means for Solving the Problems]
In order to solve the conventional problems, the present invention is configured to supply seedlings to each of a plurality of seedling planting devices 5 and 5 by a seedling supply device 4 that manually supplies seedlings from one side of the aircraft. The seedling feeding device 4 is constituted by a plurality of conveyor tables 110 on which a plurality of seedling feeding cups 40 are arranged .
[0005]
[Effects of the invention]
According to this invention, when one worker replenishes the seedling supply device 4 from one side of the machine body, seedlings are supplied to each of the plurality of seedling planting devices 5 and 5 in the seedling supply device 4, Multiple seedlings can be planted in a cocoon. Therefore, transplanting of a plurality of seedlings can be performed by one person, and the problems of the conventional example can be solved.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
As an embodiment of the present invention, a vegetable transplanter as an example of a seedling transplanter will be described in detail with reference to the drawings.
This vegetable transplanting machine 1 is driven from the seedling supply device 4 and the left and right seedling planting devices 5 and 5 while the machine is advanced with the traveling unit 1a having traveling wheels 2, 2, 3 and 3 straddling the ridge U. The planting part 1b is configured to plant a vegetable pot seedling on the upper surface of the ridge U. The operator appropriately steers the aircraft with the steering handle 6 provided at the rear of the aircraft, and supplies seedlings to the seedling supply device 4 while walking on the side of the aircraft during planting work. Hereinafter, the configuration of each unit will be described.
[0007]
In the traveling unit 1 a, an engine 9 is disposed in the front part of the traveling unit mission case 7. A hydraulic pump 10 that is driven by the power of the engine is provided on the left side surface of the engine 9. Further, a fuel tank 11 and the like are provided on the upper side of the engine 9, and a bonnet 12 covers the upper part thereof. A long connecting frame 13 having a rectangular shape in side view is integrally provided on the back surface of the traveling unit mission case 7, and the front end portion of the main frame 14 that connects the traveling unit 1 a and the steering handle 6 to the right rear end of the connecting frame. Are firmly connected. The main frame 14 extends rearward, bends obliquely upward in the middle, and extends as it is to the rear position of the planting portion 1b. The steering handle 6 is fixedly attached to the rear end portion.
[0008]
Traveling transmission cases 16, 16 are integrally attached to the rotating cylinders 15, 15 protruding from the left and right side surfaces of the traveling unit transmission case 7, and the rear wheels 2, 2 that are driving traveling wheels are attached to the tip of the traveling transmission case. It is pivotally supported. Also, front wheel support rods 18 and 18 are attached to the left and right ends of a front wheel support frame 17 that is swingably provided around the pivot shaft 17a in the front-rear direction on the lower side of the engine 9 so that the height thereof can be adjusted. Front wheels 3 and 3 which are driven traveling wheels at the lower end are pivotally supported.
[0009]
The traveling unit 1a is provided with an airframe control mechanism for controlling the airframe position by moving the rear wheels 2 and 2 up and down relative to the airframe. In this airframe control mechanism, an elevating cylinder 21 is provided rearward from a hydraulic valve unit 20 disposed on a traveling unit mission case 7, and a balance rod 22 is provided around a vertical axis at the tip of a piston rod of the cylinder. Is pivotally attached to the. The piston rod slides along the guide shaft 24 supported by the hydraulic valve unit 20 and the attachment member 23 attached to the main frame 14 at both front and rear ends. The left and right end portions of the balance rod 22 are connected to swing arms 25 and 25 fixed to the rotating cylinder portions 15 and 15 via connecting rods 26 and 26, respectively. A rolling cylinder 27 is incorporated in the left connecting rod 26, and the length can be changed by extending and contracting the cylinder.
[0010]
The elevating cylinder 21 and the rolling cylinder 27 are operated by controlling the hydraulic oil supplied from the hydraulic pump 10 with a control valve (not shown) in the hydraulic valve unit 20. When the elevating cylinder 21 is expanded and contracted, the left and right rear wheels 2 and 2 are moved up and down by the same amount in the same direction, and the aircraft is raised and lowered. Further, when the rolling cylinder 27 is expanded and contracted, the left and right rear wheels 2 and 2 are moved up and down by the same amount in the opposite direction, and the body is tilted left and right.
[0011]
The planting part 1 b is fixed to the upper surface of the connecting frame 13 at the lower part of the planting part transmission case 30 transmitted from the traveling part mission case 7, and to the upper part of the planting part mission case 30. The bases of the cases 31 and 31 are fixed, and the bases of the left and right planting transmission cases 32 and 32 are fixed to the respective distal ends of the left and right first planting transmission cases 31 and 31. The left and right first seedling transmission cases 31 and 31 and the left and right planting transmission cases 32 and 32 are connected to respective operation mechanisms of left and right seedling planting devices 5 and 5 described later. The seedling planting tools 60 and 60, which will be described later on the left and right seedling planting devices 5 and 5, are arranged side by side in the left-right direction on the rear side of the traveling unit 1a. Further, a seedling supply device 4 and a seedling mounting table 56, which will be described later, are attached to an upper frame 34 whose base is fixed to the planting part mission case 30 so as to be positioned above the left and right seedling planting tools 60 and 60.
[0012]
As shown in FIG. 3, the input shaft 30a of the planting part mission case 30 protrudes forward from the lower end of the case, and by inserting it into the PTO extraction part 7a of the traveling part mission case 7, the PTO It is connected to a shaft on the traveling part side in the take-out part. The planting section mission case 30 is detachably attached to the connecting frame 13 by bolts 35. Therefore, by removing the bolts 35 and removing the input shaft 31a from the PTO extraction portion 7a, the planting portion 1b can be detached from the traveling portion 1a, and the planting portion 1b can be easily maintained.
[0013]
In a side view, the planting part mission case 30 is provided rearward and upward from the connection frame 13, and the left and right first planting transmission cases 31 and 31 are provided rearward and downward from the upper end part of the planting part mission case 30; and The left and right second planting transmission cases 32 and 32 are respectively provided in the horizontal direction from the lower ends of the left and right first planting transmission cases 31 and 31. With this configuration, a space for moving the balance rod 22 below the second planting transmission case 32 is ensured without making the longitudinal length of the airframe longer than necessary.
[0014]
The seedling supply device 4 includes a turntable 41 in which a plurality of seedling supply cups 40 are arranged at equal intervals on the circumference and a plurality of seedling supply cups 40 that rotate (circulate) the outer periphery of the turntable 41 on the same plane. Are arranged at equal intervals. The turntable 41 is rotatably provided on a support plate 42 fixed to the upper frame 34 with a central axis 43 as a fulcrum. A ratchet wheel 45 is attached to the central shaft 43, and a ratchet pawl 46 urged in a direction to mesh with the teeth of the ratchet wheel is attached to a ratchet arm 47 that is rotatably fitted to the central shaft 43. A ratchet arm 47 and a seedling supply drive arm 49 that operates integrally with a link support arm 67B described later are connected via a seedling supply drive rod 50, and the turntable is turned by swinging the seedling supply drive arm 49. 41 rotates intermittently by the attachment interval of the seedling supply cups 40 in synchronization with the operation of the seedling planting device 56.
[0015]
Openable / closable shutters 52 are attached to the bottoms of the seedling supply cups 40. A C-shaped shutter closing bar 53 cut off at a position slightly to the left in plan view is provided at a height in contact with the bottom of the seedling supply cup, and a seedling supply position P corresponding to the cut part of the shutter closing bar 53 is provided. The shutter 52 of the seedling supply cup 40 located at the position is opened by its own weight or the weight of the seedling, but the shutters 52 of the other seedling supply cups 40 are closed by being restricted by the shutter closing rod 53.
[0016]
On the other hand, the conveyor table 110 is configured by connecting a large number of flat plates 111 provided with seedling supply cups 40 by chain links 112 and is supported by the upper frame 34. Further, teeth 114 that mesh with a drive gear 113 described later are provided on the side of the chain link 112.
The drive gear 113 is rotatably supported by a support plate fixed to the upper frame 34, and the tip of an arm 115 provided integrally with the rotation center shaft is connected to the ratchet arm 47 by a rod 116. At the same time, the drive gear 113 rotates in synchronization with the rotation of the turntable 41, and the rotation of the drive gear 113 causes the teeth 114 of the chain link 112 that meshes with the drive gear 113 to rotate, so that the conveyor table 110 is turned on. Since it rotates around 41, the seedling supply cup 40 of the turntable 41 and the seedling supply cup 40 of the conveyor table 110 move at the same pitch and at the same speed.
[0017]
The same openable / closable shutter 52 as the seedling supply cup 40 of the turntable 41 is attached to the bottom of each seedling supply cup 40 of the conveyor table 110. The shutter 52 of the seedling supply cup 40 is configured to open on the right side (position P ′) of the seedling supply position P of the turntable 41.
On the front side of the seedling supply device 4, there is provided a seedling mounting base 56 attached to mounting rods 56a and 56a protruding forward from the upper frame 34, on which one seedling tray is placed.
[0018]
The pot seedlings in the seedling tray placed on the seedling placing table 56 are manually supplied to each seedling supply cup 40. When the seedling supply cup 40 containing seedlings is moved to the seedling supply positions P and P ′ by the rotation of the turntable 41 and the conveyor table 110, the shutter 52 is opened and the seedlings are planted in the right and left seedling planting devices 5 and 5. It falls into 60.60.
[0019]
The rear part of the rear wheel 2 on the left side and on the left side of the seedling supply device 4 serves as a space A for an operator to perform seedling replenishment work while walking along with the progress of the machine body. When the worker performs the seedling replenishing work while walking in the space A, the saddle surface between the pressure-reducing wheel 80 and the pressure-reducing wheel 80, which will be described later, can be seen from the gap between the seedling supply device 4 and the steering handle 6, so that the seedling is planted. Seedling can be replenished while monitoring the situation.
[0020]
The seedling planting device 5 includes a cup-shaped seedling planting tool 60 with a sharp lower end. The seedling planting tool 60 includes a front member 60a and a rear member 60b, and is a front member mounting arm that is rotatably supported by a front member rotation shaft 61A located behind the seedling planting tool 60. The front member 60a is integrally attached to 62A and 62A, and the rear member is attached to the rear member attaching arms 62B and 62B that are rotatably supported by the rear member rotating shaft 61B located in front of the seedling applicator 60. 60b is attached integrally. Therefore, when both members 60a and 60b rotate about the rotation shafts 61A and 61B, the lower part of the seedling planting tool 60 opens and closes. The front member 60a and the rear member 60b rotate in conjunction with each other by the interlocking pin 63 that is loosely fitted in the long holes formed in the front member mounting arm 62A and the rear member mounting arm 62B. Between the leg part 62aA of the front member mounting arm 62A and the leg part 62aB of the rear member mounting arm 62B, a spring 64 that urges the front member 60a and the rear member 60b to close is stretched. The seedling planting tool 60 performs a predetermined operation by the following operation mechanism.
[0021]
A rear link support arm 67A is rotatably attached to a support portion 33a protruding upward from the second planting transmission case 32, and a base member is pivotally attached to the support arm 67A. The moving shaft 61A is connected. A rear link drive arm 69A provided at the rear end of the second planting transmission case 32 is connected to the middle portion of the rear link 68A. Further, a front link support arm 67B is rotatably attached to the planting part mission case 30, and a rear member rotation shaft 61B is connected to a rear end of a front link 68B whose base is pivotally attached to the support arm. Yes. A front link drive arm 69B provided at the rear end of the first planting transmission case 31 is connected to an intermediate portion of the front link 68B. When both the drive arms 69A and 69B are driven and rotated, the rear link 68A and the front link 68B swing up and down while changing the position of the base portion back and forth, and the seedling planting tool 60 moves up and down while maintaining a constant posture.
[0022]
An opening / closing arm 71 is rotatably attached to the base portion of the rear link 68A, and a distal end portion of the opening / closing arm 71 and a front member attachment arm 62A are connected by an opening / closing rod 72. An opening / closing cam 73 that rotates integrally with the rear link drive arm 69A is attached to an intermediate portion of the rear link 68A. A roller 74 as a cam follower of the opening / closing cam is provided on the opening / closing arm 71. The opening / closing cam 73 is engaged with the roller 74 in a stroke in which the seedling planting tool 60 is lifted from a position near the bottom dead center. When the opening / closing cam 73 engages with the roller 74, the opening / closing rod 72 is pulled, the front member 60a and the rear member 60b rotate in conjunction with each other, and the seedling planting tool 60 opens. When the opening / closing cam 73 does not engage with the roller 74, the seedling planting tool 60 is closed by the tension of the spring 64.
[0023]
When the seedling planting tool 60 is at the top dead center, the seedling supply device 4 drops and supplies the seedling. The supplied seedling is guided into the seedling planting tool through a cylindrical seedling guide 76 attached to the front member rotation shaft 61A and the rear member rotation shaft 61B. The seedling planting tool 60 holding the seedling descends, and at the bottom dead center, the lower part of the seedling planting tool 60 pierces the topsoil portion of the cocoon to form a seedling transplanting hole. Almost simultaneously with this, the seedling planting tool 60 is opened, and the held seedling is opened in the seedling transplanting hole. If the seedling planting tool 60 rises as it is and rises to near the top dead center, the seedling planting tool 60 is closed.
[0024]
The left second planting transmission case 32 is located on the left side of the seedling planting device 5. And the cover 76 which adheres to the left second planting transmission case 32 and covers the seedling planting tool 60 from the left side to the rear is attached. The left second planting transmission case 32 and the cover 76 prevent the operator from interfering with the seedling planting device 5 during the seedling replenishment operation.
[0025]
A pair of left and right pressure-reducing wheels 80 and 80 are respectively provided behind the left and right seedling planting positions. The pressure-reducing wheels 80 and 80 are attached obliquely so that the distance between them is narrower toward the lower part, and are urged downward by a spring 81 loosely fitted to a rod 92 described later. The soil around the seedling transplant hole after the seedling has been planted is collapsed to refill the hole, and the trace is lightly crushed.
[0026]
The pressure-reducing wheel frame 82 to which the pressure-reducing wheels 80 are attached is supported by the planting depth adjustment guide frame 83 so as to be rotatable up and down. A planting depth adjusting guide frame 83 is formed with a guide groove 84 having a plurality of engaging portions 84a..., And a planting depth adjusting lever 85 integral with the pressure reducing wheel frame 82 is slidable in the guide groove. Is fitted. When the planting depth adjusting lever 85 is engaged with the engaging portions 84a of the guide groove 84, the pressure reducing wheel frame 82 is fixed so as not to rotate. Therefore, the operation of the planting depth adjustment lever 85 can set the mounting height of the pressure reducing wheels 80 and 80 in a plurality of stages. Thereby, the planting depth of a seedling is adjusted in steps.
[0027]
The planting depth adjustment guide frame 83 is attached to a rear end portion of a swing frame 87 supported by a support frame 86 fixed to the front and rear intermediate portions of the main frame 14 so as to swing up and down. When the pressure-reducing wheels 80, 80 move up and down relative to the surface of the body according to the unevenness of the surface, the rocking of the pressure-reducing wheel frame 81 due to the vertical movement of the pressure-reducing wheel is lifted and lowered in the hydraulic valve unit 20 via the interlocking mechanism 88. The raising / lowering cylinder 21 is actuated in such a direction that the angle of the swing frame 87 is returned to the original state, which is transmitted to the hydraulic valve. Thus, the aircraft is controlled to move up and down so that the height from the upper surface of the bag to the aircraft is maintained constant.
[0028]
Further, a pressure-reducing wheel fixing lever 90 is rotatably provided at the rear portion of the main frame 14, and an upper end portion of a rod 92 having a lower end portion connected to a swing frame 87 in an elongated hole 91a of an arm 91 integrated with the lever. It is pinned. When the pressure-reducing wheel fixing lever 90 is locked to the locking portion 93a of the guide groove 93, the pressure-reducing wheels 80 and 80 are fixed at a fixed height with respect to the airframe, and the above-mentioned lifting control does not function. In order to prevent the pressure-reducing wheels 80, 80 from moving when the seedling planting device 5 is operated with the machine body raised to the non-working position or during transportation, the pressure-reducing wheels 80, 80 are fixed by the above method.
[0029]
The rolling hydraulic valve in the hydraulic valve unit 20 is switched in conjunction with the movement of the pendulum 95 for detecting the left / right inclination. When the aircraft tilts to the left / right, the rolling cylinder 27 is actuated as appropriate to move the aircraft to the left / right. Control to return to horizontal.
The steering handle 6 is substantially U-shaped in plan view with both ends extending rearward, and grips 6a and 6a are attached to both ends. When turning or traveling on the road, the operator grips the grips 6a and 6a to operate.
[0030]
Side clutch levers 100 and 100 are provided below the grips 6a and 6a. In addition, an operation panel 101 is provided at the base of the steering handle 6, and a planting clutch for turning on / off a planting clutch that is transmitted to the seedling supply device 4 and the seedling planting device 5 and an operation for raising and lowering the machine body are provided on the operation panel. A lift lever 102 and a main clutch lever 103 for turning on and off the main clutch are provided. Reference numeral 104 in the figure denotes an inter-strain adjustment lever that adjusts the seedling planting interval.
[0031]
Further, a handle 106 fixed to the steering handle 6 is provided at the rear portion of the seedling supply device 4, and an auxiliary main clutch lever 107 is attached to the handle 106. When the worker replenishes the seedling while walking in the space A on the side of the seedling supply device 4, the body can be supported by grasping the handle 106 when the worker loses balance. Further, when it is necessary to urgently stop the work, the work can be stopped at the same position by stopping the auxiliary main clutch lever 107.
[0032]
During normal planting work, the left and right front wheels 3 and 3 and left and right rear wheels 2 and 2 are advanced along the trough, and the operator moves the space A on one side of the body (the rear of the left rear wheel 2 While walking along the eaves, the seedlings on the seedling tray placed on the seedling placing table 56 are supplied to the seedling supply cups 40 of the turntable 41 and the conveyor table 110. Then, when the respective seedling supply cups 40 containing seedlings are moved to the seedling supply positions P and P ′ by the rotation of the turntable 41 and the conveyor table 110, the shutter 52 is opened and the seedlings are transferred to the left and right seedling planting devices 5 and 5 respectively. It falls into the seedling planting tool 60/60. Then, after each seedling planting tool 60, 60 has planted a seedling in a cocoon, a pair of left and right pressing wheels 80, 80 lightly pressurizes the left and right sides of the seedling.
[0033]
Therefore, when a single worker replenishes seedlings to the seedling supply device 4 including the turntable 41 and the conveyor table 110 from the space A, which is one side of the machine body, the seedling supply device 4 provides a plurality of seedling planting devices 5.・ Seedlings are supplied to each of 5 and multiple seedlings can be planted in the ridge. In addition, since the seedling supply cups 40 of the turntable 41 and the conveyor table 110 are moved in parallel near the space A at a position close to the space A that is one side of the machine, The seedling supply cups 40 on both the turntable 41 and the conveyor table 110 can be replenished in an easy posture from the side, and the work efficiency is safe and good.
[0034]
In the above example, the seedling supply device 4 is configured by the turntable 41 and the conveyor table 110. However, as an example of the present invention, the outer conveyor table 110 and the inner turntable 41 are replaced with the outer turntable 41. The seedling supply apparatus 4 is comprised with two conveyor tables using the same thing .
[Brief description of the drawings]
FIG. 1 is a side view of a vegetable transplanter.
FIG. 2 is a plan view of a vegetable transplanter.
FIG. 3 is a perspective view of a connecting portion between a traveling unit and a planting unit.
FIG. 4 is a bottom view of the turntable.
FIG. 5 is a plan view of a conveyor table.
FIG. 6 is a side view of the conveyor table.
FIG. 7 is a side view of a seedling planting device and the like.
FIG. 8 is a plan view of a seedling planting apparatus and the like.
[Explanation of symbols]
1 Vegetable transplanter (seedling transplanter)
2 Rear wheel 3 Front wheel 4 Seedling supply device 5 Seedling planting device 6 Steering handle

Claims (1)

The seedling supply device 4 for manually supplying seedlings from one side of the machine body is configured to supply seedlings to each of the plurality of seedling planting devices 5, 5, and the seedling supply device 4 includes a plurality of seedling supply cups 40. A seedling transplanting machine comprising a plurality of conveyor tables 110 arranged with the above .

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