JP2003199409A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that sufficient cleaning effects are not obtained and there is a fear of inhibiting appropriate planting of seedlings because a seedling transplanter is composed so as to bring cleaners into contact with seedling planting tools only at positions of the cleaners on operating loci of the seedling planting tools in the seedling transplanter equipped with the seedling planting tools for performing lifting and lowering operation in the prescribed operating loci and planting seedlings in soil and the cleaners for coming into contact with the seedling planting tools on the operating loci and cleaning the seedling planting tools installed before and after the seedling planting tools, respectively. <P>SOLUTION: This seedling transplanter is composed by supporting a front and a rear cleaners 130a and 130b on a common cleaner supporting frame 135 shaking the front and the rear cleaners 130a and 130b in the front and rear directions and fixing the cleaner 130a on the rear side so as not to move relatively to the cleaner supporting frame 135. Thereby, the cleaner 130b on the front side can be moved through a sliding shaft 133 and a compression spring 134, etc., in the front and rear directions relatively to the cleaner supporting frame 135. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting tool, such as a vegetable transplanting machine or a tobacco seedling planting machine, which moves up and down on a predetermined operation locus and a seedling planting tool. It belongs to the technical field of a seedling transplanter having a cleaner for cleaning. 2. Description of the Related Art Conventionally, there has been provided a seedling planting tool which moves up and down on a predetermined operation locus to plant seedlings in soil, and comes into contact with the seedling planting tool on the operation locus. There is a seedling transplanter in which cleaners for cleaning the seedlings are provided before and after the seedling attachment. The cleaner of the seedling transplanter is disposed on the operating locus of the seedling plant, and when the seedling plant comes to the position of the cleaner, the cleaner comes into contact with the seedling plant and plant the seedling. The attachment is cleaned. In addition, the cleaner is provided so that the working resistance of the seedling-planting tool does not increase by contacting the seedling-planting tool.
It is supported by the fuselage so that it can be evacuated from the seedling attachment side. [0003] In the above configuration,
Since the cleaner contacts the seedling mounting tool and cleans the seedling mounting tool only at the position of the cleaner on the operation locus of the seedling mounting tool, a sufficient cleaning effect cannot be obtained. There is a possibility that soil or the like remains attached to the seedling-planting tool, and the soil or the like strongly adheres to the seedling-planting tool with the passage of time, which hinders proper planting of seedlings. [0004] In order to solve the above-mentioned problems, the present invention has taken the following technical means. That is, a seedling planting tool 60 for raising and lowering the plant on a predetermined operation locus T to plant seedlings in the soil is provided.
Cleaner 130 that cleans the seedling attachment 60 by contacting it
In a seedling transplanter provided with a and 130b before and after the seedling attaching tool 60, respectively, the cleaners 130a and 130b before and after the seedling transplanter.
Cleaner supporting frame 13 for swinging the front and rear directions
5 and front and rear cleaners 130a, 13
0b is used as the cleaning support frame 13.
The seedling transplanter is characterized in that the seedling transplanter is fixed so as not to move relative to No. 5 and that the other 130b is movable in the front-rear direction with respect to the cleaner support frame 135. [0005] Therefore, in this seedling transplanter, the seedling planting tool 60 moves up and down on the predetermined operation locus T to rush into the soil of the field and plant the seedling in the field. In addition, cleaner supporting frame
Cleaners 130a, 130 before and after being supported by
30b contacts the front and rear of the seedling plant 60 and drops the soil or the like attached to the seedling plant 60 that rises from the soil and cleans it. One of the front and rear cleaners 130a and 130b, which is fixed so as not to move with respect to the cleaner support frame 135, is used for the seedling inoculation tool 60 to operate on a predetermined operation locus T. Follow the cleaner support frame 135
Swings back and forth, and comes into contact with the seedling attachment 60. The other 130b of the front and rear cleaners 130a and 130b movable in the front and rear direction with respect to the cleaner supporting frame 135.
Is such that the swinging motion of the cleaner supporting frame 135 causes the seedling implanting tool 60 to move along a predetermined operating locus T while following the operation of the seedling implanting tool 60 to move. -Room 13
5 moves in the front-rear direction and contacts the seedling plant 60. As a result, the cleaner supporting frame 135 swings in the front-rear direction so that the front and rear cleaners 130a and 130b are moved.
Is in contact with the seedling planting tool 60 following the operation of the seedling planting tool 60, so that the cleaners 130a and 130b can sufficiently contact the seedling planting tool 60, and A good cleaning effect is obtained, and seedlings can be planted properly. Further, since the front and rear cleaners 130a and 130b are moved in the front and rear direction by the common cleaner support frame 135, the support structure of the front and rear cleaners 130a and 130b can be simplified.
Further, since the other 130b of the front and rear cleaners 130a and 130b moves in the front and rear direction with respect to the cleaner support frame 135, for example, the cleaner support frame 1 is used.
35, the cleaners 130a and 130b can prevent the operation of the seedling planting tool 60 from being disturbed as compared with the case where the relative positional relationship between the front and rear cleaners is fixed. -The seedlings 130a, 130b can each be brought into contact with the seedling plant 60 accurately. FIG. 1 to FIG. 4 show an onion seedling transplanter as an example of a seedling transplanter to which the present invention is applied. The seedling transplanter 1 has a traveling section 1a provided with traveling wheels 2 and 3 as traveling propulsion bodies, and two seedling transplanting sections 1b (L) and 1b including a seedling supply device 4, a seedling transplanting device 5, and the like. (R) is provided, and two pots of vegetable pot seedlings are simultaneously planted on the upper surface of the ridge U by the seedling planting portion 1b while the machine body is advanced while straddling the ridge U by the traveling portion 1a. The operator appropriately steers the aircraft with the steering handle 6 provided at the rear of the aircraft, and supplies the seedlings to the respective seedling supply devices 4L and 4R while walking on the side of the seedling planting part 1b during the planting operation. . Hereinafter, the configuration of each unit will be described. The traveling section 1a includes a traveling section transmission case 7
The engine 9 is arranged in front of the vehicle. A hydraulic pump 10 driven by the power of the engine 9 is provided on the left side of the engine 9.
Is provided. A fuel tank 11 and the like are provided above the engine 9, and a bonnet 12 covers the upper side thereof. A front frame 13 having a rectangular shape in a side view is integrally provided on a rear portion of the traveling unit transmission case 7, and a traveling unit 1 a and a steering handle 6 are provided at a right end on the rear surface of the front frame.
The front end of the main frame 14 connecting the two is fixedly connected. The main frame 14 includes the seedling planting section 1b on the left side.
It extends backward below (L), curves obliquely upward on the way, and extends as it is to the rear position of the seedling planting portion 1b (L). The steering handle 6 is fixedly attached to the rear end. [0009] Rotatable rear wheel transmission pipes 15L and 15R, into which rear wheel transmission shafts are inserted, protrude from the left and right side surfaces of the traveling section transmission case 7 to the left and right sides. The right rear wheel transmission pipe 15R is longer than the left rear wheel transmission pipe 15L. The vicinity of the distal ends of the rear wheel transmission pipes 15L and 15R is the front frame 1
Bearing part 15b attached to a support pipe 15a fixed to 3
It is rotatably supported by. A traveling chain case 16 is integrally attached to the distal ends of the left and right rear wheel transmission pipes 15L and 15R, and a rear wheel 2 as a drive wheel is attached to a rear wheel axle 2a provided at the distal end of the traveling chain case 16. Have been. Rear wheel transmission pipe 15L,
15R via a shaft in the traveling chain case 16 and a chain (not shown) in the traveling chain case 16.
Is transmitted to the rear wheel axle 2a. On the lower side of the engine 9, a front wheel support pipe 1 is provided.
7 is swingably provided with the pivot shaft 17a in the front-rear direction as a fulcrum. The front wheel support pipe 17 has a portion on the right side longer than the left portion with respect to the pivot shaft 17a. Front wheel support rods 19 are attached to both left and right ends of the front wheel support shaft 18, and the front wheel 3, which is a driven wheel, is pivotally supported at the lower end of the rod 19. Accordingly, the left and right front wheels 3 move up and down in opposite directions within a predetermined range. The front wheel support pipe 17 is connected to the left and right front wheels 3.
May be biased by a spring or the like to the side where the height with respect to the body is the same. The traveling section 1a is provided with a body control mechanism for controlling the position of the body by moving the rear wheel 2 up and down with respect to the body. This body control mechanism is provided with an elevating cylinder 21 provided rearward from a hydraulic valve unit 20 disposed on the traveling unit transmission case 7, and a balance rod 22 at the tip end of a piston rod of the cylinder 21 in the vertical direction. It is attached so that it can rotate around. The front and rear ends of the piston rod slide along a guide shaft 24 supported by a hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. Left and right ends of the balance rod 22 and a swing arm 25 fixed to the rear wheel transmission pipe 15 are connected via a connection rod 26. The left connecting rod 26 has a rolling cylinder 27 incorporated therein, and its length can be changed by expanding and contracting the cylinder 27. The lifting cylinder 21 and the rolling cylinder 27 are operated by controlling a hydraulic oil supplied from the hydraulic pump 10 by a control valve (not shown) in the hydraulic valve unit 20. When the elevating cylinder 21 is extended and retracted, the left and right traveling chains 16 rotate, and the left and right rear wheels 2 move up and down by the same amount in the same direction with respect to the body, and the body moves up and down. When the rolling cylinder 27 is extended and retracted, the left traveling chain 16 rotates and only the left rear wheel 2 moves up and down with respect to the body, and the body tilts left and right. The seedling planting portions 1b, 1b are arranged in parallel on the left and right, the left seedling planting portion 1b (L) is located behind the traveling section transmission case 7 in plan view, and the right seedling planting portion 1b (R). Is located on the right side. The lower part of the seedling plant transmission unit 30 transmitted from the traveling unit transmission case 7 is fixed to the upper surface of the front frame 13, and the base of the first planting transmission case 31 is mounted on the upper part of the seedling plant transmission case 30. The base of the second planted transmission case 32 is secured to the distal end of the first planted transmission case 31. The first planting transmission case 31 and the second planting transmission case 32 are connected to the operation mechanisms of the seedling planting apparatuses 5 and 5 described later. still,
First planting transmission case 31 and second planting transmission case 32
Are arranged above the main frame 14. The seedling supply device 4R for the right seedling planting portion 1b (R) and the seedling supply device 4L for the left seedling planting portion 1b (L) are mounted on the upper frame 34 having the base fixed to the upper end of the seedling planting mission section 30. Is installed. Further, a fixed seedling mounting table 37 common to both seedling mounting sections is supported by a seedling mounting frame 36 fixed to the upper end of the seedling mounting section transmission case 30. In addition, the movable seedling table 120 is rotatably supported by a frame 38 extending from the seedling supply device 4L of the left seedling planting section 1b (L) and a sub-frame 39 described later via a vertical rotation shaft 120a. are doing. The movable seedling mounting table 120 can be in a state of being overlapped below the fixed seedling mounting table 37 (see FIG. 2) when transporting the aircraft, storing the aircraft in a warehouse or the like, or traveling on a road, and the like.
At the time of planting operation, the right and left sides of the seedling supply device 4R of the right seedling planting portion 1b (R) and the left front side of the seedling supply device 4L of the left seedling planting portion 1b (L) are projected to the right and left of the machine body, respectively. (See FIG. 4). Seedling supply device 4R for right seedling planting section 1b (R)
, There is provided a turntable 41 in which a plurality of seedling supply cups 40 are arranged at equal intervals on the circumference. The turntable 41 is provided on a support plate 42 fixed to the upper frame 34 so as to be rotatable about a central shaft 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 the central shaft 43.
It is attached to a ratchet arm 47 that rotatably fits into the arm. The ratchet arm 47 and the seedling supply drive arm 49 are connected via a seedling supply drive rod 50. When the seedling supply drive arm 49 swings, the turntable 41 synchronizes with the operation of the seedling planting device 5. The rotation of the seedling supply cups 40,. At the bottom of each seedling supply cup 40,.
2, ... are attached. A C-shaped shutter closing rod 53 whose front side is slightly cut off 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 portion of the shutter closing rod 53 is provided. 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 the shutter closing rod 53. Therefore, when the worker has a plurality of seedling supply cups 40,
When the seedlings are supplied to the seedling supply cup 40, the seedling supply cup 40 moves on the circumferential locus due to the rotation of the turntable 41, and reaches the seedling supply position P. The seedlings are dropped and supplied to 60. Seedling supply device 4L for left seedling planting section 1b (L)
Is similar to that of the right seedling planting section 1b (R) in that a plurality of seedling supply cups 40,... Are connected at predetermined intervals by a chain. Then, it moves on a substantially triangular locus in plan view. The shutter closing rod (not shown) is substantially triangular along this movement locus, and the seedling supply cup 4 at the seedling supply position P.
The shutter 52 has a cut portion so as to open. Like the right seedling planting section 1b (R), the chain 12
1 is transmitted via a ratchet arm or the like to drive a sprocket (not shown), and the chain 121 is intermittently intermittently synchronized with the operation of the seedling planting apparatus 5 by the mounting interval of the seedling supply cups 40,. The seedling supply cup 40 is moved. Therefore,
When the seedling supply cup 40 moves on a substantially triangular locus by driving the chain 121 and reaches the seedling supply position P, the shutter 52 is opened and the seedling attachment 6 below the seedling supply cup 40 is opened.
In this configuration, the seedlings are dropped and supplied to 0. During the planting operation, two workers on the left and right sides are placed on the movable seedling mounting table 120 or the fixed seedling mounting table 37 while walking behind the right and left rear wheels 2 in accordance with the progress of the machine. The pot seedlings in the seedling raising tray are supplied to the seedling supply cups 40,... Of the left and right seedling supply devices 4L, 4R. Note that the seedling supply device 4L on the left side is a seedling supply cup 40,.
The moving trajectory is substantially triangular in a plan view and the right end thereof is disposed on the right side of the fuselage.
While walking behind, the seedlings can be supplied to both the left and right seedling supply devices 4L and 4R, thereby enabling one-person work. The seedling planting apparatus 5 includes a cup-shaped seedling planting tool 60 having a sharpened lower end, and is disposed on the right side of the main frame 14. The seedling attachment 60 includes a front member 60a and a rear member 60b, and a front member mounting arm rotatably supported by a front member rotation shaft 61A located behind the seedling attachment 60. A front member 60a is integrally attached to 62A, and a rear member 60b is integrally attached to a rear member attachment arm 62B rotatably supported by a rear member rotation shaft 61B located in front of the seedling instilling tool 60. Installed.
Therefore, the two members 60 are pivoted about the rotation shafts 61A and 61B.
When a and 60b rotate, the lower part of the seedling attachment 60 opens and closes. Front member mounting arm 62A and rear member mounting arm 6
The front member 60a and the rear member 60b rotate in conjunction with each other by the interlocking pin 63 loosely fitted in the elongated hole formed in the 2B. A spring 64 for urging the front member 60a and the rear member 60b toward the closing side is provided between the leg 62aA of the front member mounting arm 62A and the leg 62aB of the rear member mounting arm 62B. In addition, this seedling planting tool 6
Numeral 0 is provided at the same position in the front-rear direction so that the right and left seedling planting portions 1b (L) and 1b (R) have the same configuration and overlap in side view, and perform a predetermined operation by the following common operating mechanism. . A rear link support arm 67A is rotatably attached to the second planting transmission case 32, and a front member rotation shaft 61A is connected to the upper end of a rear link 68A whose base is pivotally connected to the support arm. I have. A rear link drive arm 69A provided at the rear end of the second planting transmission case 32 is connected to an intermediate portion of the rear link 68A. Further, a front link support arm 67B is rotatably attached to the second planting transmission case 32, and a rear member rotation shaft 61B is connected to an upper end of a front link 68B whose base is pivotally connected to the support arm. I have. A front link drive arm 69B provided at the front end of the second planting transmission case 32 is connected to an intermediate portion of the front link 68B. When both 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 part back and forth, and the seedling attachment 60
Moves up and down along a predetermined operation locus (closed loop locus) T while maintaining a constant posture. An opening / closing arm 71 is provided at the base of the front link 68B.
Is pivotally mounted, and the tip of the opening / closing arm 71 and the front member mounting arm 62A are connected by an opening / closing rod 72. An opening / closing cam 73 that rotates integrally with the front link drive arm 69B is attached to an intermediate portion of the front link 68B. 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 comes into contact with the roller 74 in a process in which the seedling attaching tool 60 rises from a position near the bottom dead center. When the opening / closing cam 73 contacts 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 contact the roller 74, the seedling attachment 60 is closed by the tension of the spring 64. The operating locus (closed loop locus) T of the seedling attaching tool 60 which moves up and down by the arms 67A and 67B, the rear link 68A and the front link 68B is vertically long in a side view (viewed in FIG. 1). Becomes a locus skewed forward. Then, when the seedling attaching tool 60 is at the top dead center of the operation trajectory T, the seedling supply device 4 drops and supplies the seedlings. The supplied seedling is guided into the seedling plant through a tubular seedling guide 76 attached to the front member rotating shaft 61A and the rear member rotating shaft 61B. The seedling holding tool 60 holding the seedlings descends, and at the bottom dead center of the operation trajectory T, the lower part of the seedling mounting tool 60 pierces the topsoil portion of the ridge to form a seedling transplanting hole. Almost simultaneously with this, the seedling attaching tool 60 is opened, and the held seedling is released into the seedling transplanting hole. The seedling attachment 60 rises as it is, and when it rises to near the top dead center, the seedling attachment 60 closes. In this way, seedlings are planted in the field. A pair of left and right pressure-reducing wheels 80 are provided at the rear of the seedling-planting position so as to be obliquely mounted so that the distance between them becomes smaller toward the lower part. The pressure-reducing wheel 80 is attached to a pressure-reducing wheel frame 82 that can swing up and down with a left-right direction pressure-reducing wheel frame fulcrum shaft 81 as a fulcrum, and a weight mounting rod 83 erected at the rear end of the pressure-reducing wheel frame 82. Are pressed against the ground by the load of the weights 84,. The crushing wheels 80, 80, the crushing wheel frame 82, and the like are provided at the same position in the front-rear direction such that the left and right seedling planting portions 1b (L), 1b (R) have the same configuration and overlap in side view. ing. Since the total weight of the weights 84,... To be mounted is changed, it is possible to adjust the load for pressing the pressure-reducing wheel 80 against the ground. Squeezing wheel 80 as the aircraft progresses
Rolls on the ridges, collapses the soil around the seedling transplant holes after the seedlings are planted, refills the holes, and lightly crushes the traces. The compression wheel frame fulcrum shaft 81 is supported at the left end by the main frame 14 and at the right end by the sub-frame 39, and is common to the left and right seedling planting parts 1b (L) and 1b (R). ing. The pressure-reducing wheel frames 82 of the left and right seedling mounting parts 1b (L) and 1b (R) are independently and swingably attached to the pressure-reducing wheel frame fulcrum shaft 81. The sub-frame 39 is composed of the previous frame 13
The right end of the support pipe 15a extending to the right and the rear end of the main frame 14 immediately before the steering handle 6 are connected to each other.
(L), 1b (R), extends rearward through the right side of the seedling attachment 60 and the compression ring 80, and the rear portion 39a is attached to the seedling attachment 60.
And it extends to the left and right behind the compression wheel 80. The sub-frame 39 is curved obliquely upward in the middle of the rear frame similarly to the main frame 14, and has a configuration overlapping the main frame 14 in a side view. At the rear portion 39a of the sub-frame 39, a guide plate 39b that guides the weight mounting rod 83 erected on the pressure-reducing wheel frame 82 to slide vertically is fixedly provided. The upper end of the weight mounting rod 83 is provided with a descent restricting stopper 122 for restricting the pressure-reducing wheel 80 from lowering by a predetermined amount or more. The lowering of the crushing wheel 80 is restricted so that the crushing wheel 80 can be supported in a state of being lifted from the ground. The main frame 14 is provided with a grounding body 90 which rotates vertically according to the unevenness of the ridge.
The movement of the grounding body 90 is transmitted to the lifting hydraulic valve in the hydraulic valve unit 20 via the interlocking mechanism 91, and operates the lifting cylinder 21 so that the body height with respect to the upper surface of the ridge becomes constant. Thereby, seedling planting part 1b
(L) The planting depth of the 1b (R) seedlings is kept constant.
When the height of the ground contact body 90 with respect to the body is changed by the planting depth adjusting lever 92, the planting depth of the seedling is adjusted. Further, the rolling hydraulic valve in the hydraulic valve unit 20 is switched in conjunction with the movement of a pendulum (not shown) for detecting the left-right inclination. Operate as appropriate to control the aircraft to return to left and right horizontal. In the vicinity of the steering wheel 6, there is a main clutch lever 110 which can cut off transmission to the rear wheels 2, 2 and the seedling plant transmission case 30, a planting on / off, and rear wheels 2, 2. 2 is provided with a planting / elevating lever 111 capable of performing an elevating operation. The planting / elevating lever 111 is provided so as to be operated in the front-rear direction, and the rear wheel elevating fixed position is operated as the lever guide rear end is operated forward from the rear wheel lowering position.
There is a rear wheel automatic elevating position in which the rear wheels 2, 2 are raised and lowered by the ground contacting body 90, and the planting system is driven when operated further forward. Also, the gripper 6 of the steering handle 6
a, 6a, grip-type side clutch lever-1
13 and 113 are provided on the left and right, respectively. By operating the side clutch levers 113 and 113 toward the grips 6a and 6a, the driving of the rear wheels 2 and 2 on the operated side is cut off. Before and after the seedling tool 60 of the seedling plant 5,
Cleaners 130a and 130b are provided to clean the seedling attachment 60 by contacting the outer surface of the seedling attachment 60. The front and rear cleaners 130a and 130b have a shape in which the side of the seedling mounting tool 60 is concave in an arc shape so as to appropriately contact the outer surface of the seedling mounting tool 60, respectively. The rear cleaner 130a is fixed to front and rear frames 131 provided on the left and right sides of the cleaner 130a and extending in the front and rear direction. On the other hand, the front cleaner 130b has a sliding shaft 133 which slides in the direction of the front and rear frames 131, that is, in the front and rear direction with respect to the connecting frame 132 which connects and fixes the left and right front and rear frames 131. Is fixed to the rear end. It should be noted that the cleaner 13 on the front side outside the sliding shaft 133 is provided.
0b and the connecting frame 132
The compression spring 134 urges the front cleaner 130b rearward. Therefore,
The left and right front and rear frames 131 and the connection frame 132
Thus, the cleaner supporting frame 135 is constituted.
The left and right front and rear frames 131 are located on the left and right outer sides of the seedling attachment 60, respectively.
The seedling attachment 60 moves up and down along the operation trajectory T between the rooms 131. Also, this cleaner 130
a and 130b are near the lower end of the seedling planting tool 60 when the seedling planting tool 60 is located at the top dead center of the operating locus T and near the upper part of the seedling planting tool 60 when it is located at the bottom dead center. The height with respect to the machine body is set so as to make contact with the seedling planting tool 60, and the height is set so as to be able to contact the seedling planting tool 60 over the entire operation locus T of the seedling planting tool 60. The front end (lower end) of a front swing arm 136 that swings around the pressure reducing wheel frame fulcrum shaft 81 is connected to the front end of the cleaner support frame 135. On the other hand, at the rear end of the cleaner support frame 135, a front end (lower end) of a rear swing arm 138 provided on a rear portion 39a of the sub-frame 39 and swinging around a horizontal axis 137 is provided. )
Are linked. When the seedling mounting tool 60 is located at the upper and lower central part or lower part of the operation locus T, the seedling mounting tool 60 is located rearward in the operation locus T, so that the cleaner supporting frame 135 and the shaking A state where the moving arm 136, 138 is biased toward the front side of the cleaner supporting frame 135 by its own weight, and the rear cleaner 130a comes into contact with the outer surface of the rear member 60b of the seedling plant 60. Become. At this time, the front-side cleaner 130b contacts the outer surface of the front-side member 60a of the seedling-planting tool 60 by the compression spring 134. And
When the seedling attaching tool 60 is located at the upper end (front end) of the operation locus T, the cleaner supporting frame stabilized by the weight of the cleaner supporting frame 135 and the swinging arms 136 and 138. The seedling placement tool 60 is located on the front side of the rear cleaner 130a at the position in the front-rear direction of the drum 135, and only the front cleaner 130b contacts the outer surface of the seedling placement tool 60. Therefore, when the seedling attaching tool 60 rises from the bottom dead center of the operating locus T along the operating locus T, if the soil is attached to the outer surface of the seedling implanting tool 60, the seedling implanting tool 60 operates. The cleaner 130 before and after the trajectory T rises near the upper and lower central portions thereof.
a and 130b come into contact with the outer surface of the seedling plant 60, and the front and rear cleaners 130a and 130b move while being in extensive contact with the outer surface of the seedling plant 60 in the vertical direction. The soil adhering to the outer surface of the attachment 60 can be reliably peeled off. Even if the seedling attachment 60 rises to the vicinity of the top dead center of the operating locus T, the front cleaner 13
0b moves forward with respect to the cleaner supporting frame 135 against the compression spring 134, and does not hinder the operation of the seedling inoculation tool 60 on the operation locus T. Since the onion seedling transplanter 1 is provided with a seedling planting device 5 on each of the left and right sides to form a double-row planting machine, the front and rear cleaners 130a, 1 described above are provided.
30b, a pair of cleaner supporting frames 135 and front and rear swing arms 136 and 138 are provided corresponding to the right and left seedling planting apparatuses 5, respectively. As described above, the seedling transplanter 1 is provided with the seedling planting tool 60 that moves up and down on the predetermined operation locus T to plant seedlings in the soil, and the seedling planting tool 60 on the operation locus T.
Cleaner 130 that cleans the seedling attachment 60 by contacting
The front and rear cleaners 130a and 130b are provided on a common cleaner supporting frame 135 which swings in the front-rear direction, and the rear side cleaners 130a and 130b are provided on the front and rear sides of the seedling attachment 60, respectively. -The frame 130a is a frame supporting the cleaner 1
35, and the front cleaner 130b is fixed to the cleaner supporting frame 1 via a front cleaner mounting mechanism such as a sliding shaft 133 and a compression spring 134.
It is configured to be movable in the front-rear direction with respect to 35. Therefore, in this seedling transplanter 1, the seedling transplanting tool 60 moves up and down along the predetermined operation locus T while propelling the body by the traveling portion 1a, and enters the soil of the field, so that the seedling is transferred to the field. I will plant it. Also, the cleaner support frame 135
Before and after the cleaners 130a, 130b supported by
However, the soil and the like adhering to the seedling plant 60 rising from the soil in contact with the front and rear of the seedling plant 60 are dropped and cleaned.
The rear cleaner 130a is provided with a swing arm 136 following the operation of the seedling attachment 60 on the predetermined operation locus T.
138 causes the cleaner support frame 135 to swing back and forth, and comes into contact with the seedling attachment 60. Front side cleaner 13
0b follows the operation of the seedling mounting tool 60 while moving in the front-back direction following the operation of the seedling mounting tool 60 on the predetermined operation locus T due to the swinging of the cleaner support frame 135. Then, it moves in the front-rear direction with respect to the cleaner supporting frame 135 via the front cleaner mounting mechanism such as the sliding shaft 133 and the compression spring 134 and contacts the seedling plant 60. Therefore, the cleaner supporting frame 135 swings back and forth, and the front and rear cleaners 130a and 130b follow the operation of the seedling planting tool 60 and come into contact with the seedling planting tool 60. , The cleaners 130a, 130b can be brought into sufficient contact over the upper and lower sides of the seedling plant 60, and the seedling plant 6
0, a sufficient cleaning effect is obtained, and the shape of the planting hole in the field created by the seedling planting tool 60 due to soil or the like attached to the outer surface of the seedling planting tool 60 can be suppressed, and Seedlings can be planted in a suitable planting posture or planting depth. Further, since the front and rear cleaners 130a and 130b are moved in the front and rear direction by the common cleaner support frame 135, the front and rear swing arms 136 and 138 and the cleaner support frame 135 are provided.
And front and rear cleaners 130a, 1a by a front cleaner mounting mechanism such as a sliding shaft 133 and a compression spring 134.
30b is supported, and the front and rear cleaners 130 have a simple structure.
a, 130b can be supported, and furthermore, the weight of the body can be reduced, and the running performance or the planting work efficiency of the body can be improved. Further, since the front cleaner 130b is configured to move in the front-rear direction with respect to the cleaner support frame 135, the seedling implant 60 rises to near the top dead center of the operating locus T and moves forward. Even if it moves, it is possible to prevent the front side cleaner 130b from retreating to the front side so as not to hinder the operation of the seedling planting tool 60, and even if the outer surface of the seedling planting tool 60 has a sharp lower end. The front and rear cleaners 130a and 130b can be brought into proper contact with the seedling planting tool 60 over and below the seedling planting tool 60, respectively. In addition, since the cleaner supporting frame 135 is moved back and forth following the operation of the seedling attaching tool 60, the amount of movement of the front cleaner 130b with respect to the cleaner supporting frame 135 is limited. Since it can be small, the front cleaner mounting mechanism such as the sliding shaft 133 and the compression spring 134 has a small and compact structure, and the structure can be reduced in size and the weight of the machine can be reduced. Conventionally, the front and rear cleaners are separately movably supported from the fuselage. However, each of the front and rear cleaners requires a supporting mechanism and a moving mechanism, which makes the structure complicated and increases the weight of the fuselage. There is a risk of inviting. Conventionally, a cleaner is supported by a seedling-planting tool so as to move up and down together with the seedling-planting tool to simplify the moving mechanism of the cleaner. The weight of the part to be moved up and down together with the seedling planting tool increases, so that a large driving force is required for the operation of the seedling planting tool. There is a concern that the planting posture or planting depth of the seedlings will not work and will be inappropriate. The material of the cleaners 130a and 130b is not only made of metal but also ensures that the soil is reliably peeled off without damaging the outer surface of the seedling-planting tool 60 and obtaining a good scraper effect. It may be made of elastic rubber or resin. Although the embodiment of the present invention has been described in detail with reference to a two-row onion seedling transplanter as an example of a seedling transplanter, the present invention is not limited to this.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a seedling transplanter. FIG. 2 is a plan view of a seedling transplanter. FIG. 3 is a plan view of a seedling transplanter without a seedling supply device. FIG. 5 is a bottom view of a seedling supply device on the right side. FIG. 6 is a plan view showing a seedling planting device. FIG. 7 is a side view showing a seedling planting device. DESCRIPTION OF REFERENCE NUMERALS 1: onion seedling transplanter, 60: seedling planting tool, 130a: rear cleaner, 130b ... front cleaner, 135 ... cleaner support frame M, T: Actuation locus of seedling attachment

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Hajime Stamp             1 Iseki Agricultural Machinery, 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture             Technology Department F term (reference) 2B060 AA10 AC01 AC05 BA03 CB05                       CC05 CC20

Claims (1)

Claims 1. A seedling planting tool 60 for raising and lowering a seedling on soil by a predetermined operation trajectory T and contacting the seedling planting tool 60 on the operation trajectory T. In a seedling transplanter in which cleaners 130a and 130b for cleaning the seedling implant 60 are provided before and after the seedling implant 60, respectively.
The cleaners 130a and 130b are supported by a common cleaner support frame 135 that swings in the front-rear direction, and one of the front and rear cleaners 130a and 130b is positioned with respect to the cleaner support frame 135. A seedling transplanter characterized in that the seedling transplanter is fixed so as not to move, and the other end (130b) is movable in the front-rear direction with respect to the cleaner supporting frame (135).