JP2000032810A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the mechanism of transmission in the planting part by decreasing the parts count and making the structure simple. SOLUTION: This seedling transplanter has plural seedling tray-conveying passages installed at right and left rows in parallel, and seedling-taking out devices and seedling- transplanting devices installed so as to correspond to each of the seedling tray- conveying passages. The seedling trays which have a lot of pots storing the seedlings respectively and arranged longitudinally and latitudinally are conveyed on the seedling tray-conveying passages. The seedlings are taken out from the conveying seedling trays on the seedling tray-conveying passages by the seedling-taking out device. The seedling-transplanting device transplants the seedling taken out by the seedling-taking out device in the field. The seedling transplanter also has the first transmission shaft 65 in the right and left direction for transmitting the power to each of the seedling- taking out devices, and the second transmission shaft 133 in the right and left direction, for transmitting the power to each of the seedling-transplanting devices. The transmission system is constituted so that the power from a driving source may be transmitted to the first transmission shaft 65 or the second transmission shaft 133, and the power may be transmitted from the right and left terminals of the transmission shaft to the right and left terminals of the other transmission shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting section in a multi-row seedling transplanter for taking out seedlings from each pot of a seedling tray in which a large number of pots for accommodating one plant at a time are arranged vertically and horizontally and planting them in a field. Transmission configuration.

[0002]

2. Description of the Related Art As a seedling transplanter for pot seedlings, a seedling tray is transported along a substantially U-shaped seedling tray transport path provided in a left-right parallel arrangement according to the number of planting streaks. Seedlings are pushed out and taken out of the seedling tray inside by a seedling removal device provided inside the U-shape of the seedling tray transport path, and the extracted seedlings are planted at the lower rear of the seedling tray transport path. There is one configured to be planted in a field by an apparatus. Conventionally, the transmission system of the planting part in a seedling transplanter of this type conventionally transmits power from a drive source to a left-right transmission shaft arranged below the seedling tray transport path, and each seedling removal device is transmitted from the transmission shaft. And it branched so that it might be transmitted to each seedling planting device.

[0003]

In the above-mentioned conventional seedling transplanter, the transmission means from the transmission shaft to the seedling removal device is provided in a narrow space between the adjacent seedling tray transport paths. Therefore, it is difficult to maintain the transmission means, and when adjusting the operation timing of the seedling removal device, it is necessary to adjust each transmission means to each seedling removal device, which is troublesome. Actually, other devices associated with the seedling removal device are also provided inside the U-shaped portion of the seedling tray transporting path, and the transmission means from the transmission shaft to these devices is also provided in the seedling tray transporting path and the seedling transporting device. It is provided in a space between the tray transport paths. For this reason, if the structure is such that the transmission is transmitted from the transmission shaft to the seedling removal device and the device attached thereto for each strip, the number of parts is large and the structure is complicated. The present invention has been made to solve these problems, and has the following configuration.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the seedling transplanter according to the present invention is provided with a plurality of rows of seedling tray transport paths for transporting seedling trays in which a large number of pots accommodating seedlings are arranged in rows and columns, and a plurality of rows, and transports the seedling tray transport paths. In a seedling transplanter provided with a seedling removal device that takes out seedlings from a seedling tray inside, and a seedling planting device that transplants the seedlings taken out by the seedling removal device in a field corresponding to each seedling tray transport path, A first left-right transmission shaft for transmitting to each seedling removal device and a second left-right transmission shaft for transmitting to each seedling planting device are provided, and power from a drive source is supplied to the first transmission shaft or the second transmission shaft. A transmission system is configured to transmit power to the transmission shaft and transmit power from the left and right ends of the transmission shaft to the left and right ends of the other transmission shaft.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment shown in the drawings will be described. In the seedling transplanter 1, a planting section 4 for 6-row planting is mounted on the rear side of the riding traveling vehicle body 2 via a link device 3 so as to be able to move up and down. 5 and a fertilizer feeding device 5b for feeding the fertilizer for each strip.
The seedling transplanter 1 is for planting paddy rice seedlings in a paddy field, but the present invention is not limited to this, and is also applicable to a seedling transplanter for planting vegetable seedlings in a field.

The traveling vehicle body 2 includes a pair of left and right steerable front wheels 6 and 6 that are driven to rotate and a pair of right and left rear wheels 7 that are driven to rotate.
7, a transmission case 9 on the front side of the frame 8,
The engine E is mounted on the rear side, and the rotational power of the engine E is temporarily transmitted to the hydraulic pump mounted on the upper part of the transmission case 9 by the belt transmission 10, and from there,
The transmission is transmitted into the transmission case 9 by a belt transmission 11 capable of continuously variable transmission operation. The power shifted by the transmission in the transmission case 9 is transmitted to the front wheels 6, 6 and the rear wheels 7, 7, and the transmission shaft 9
a, the intermediate gear case 9b, and the planting portion 4 via the transmission shaft 9c.
It is transmitted to. In the drawing, reference numeral 12 denotes a steering wheel for steering the front wheels 6 and 6, reference numeral 13 denotes a seat on which a pilot sits, and reference numeral 14 denotes a seat.
Is a step floor for the operator to move on the traveling vehicle body, 15 is a spare seedling mounting table on which spare seedlings are placed, and 16 is a drawing marker for drawing the course of the traveling vehicle body 2 in the next step to the field scene.

The link device 3 includes a frame 8 of the traveling vehicle body 2.
The upper link 21 and the upper link 21 are attached to the link base 20 fixed to the rear end.
1 and the lower links 22, 22 are rotatably mounted,
A connection frame 23 is connected to the rear ends of these upper and lower links. The front end of a rolling shaft 24 rotatably supported on the planting portion 4 side is inserted and connected to the lower end of the connection frame 23. Thereby, the planting part 4 is mounted in a rolling manner in the traveling direction. Further, a hydraulic cylinder 26 for driving the link device 3 is provided with the base side attached to the frame 8 and the piston rod side thereof is integrally fixed downward from the bases of the upper links 21 and 21 integrally. Is connected via a spring to the tip of the. When the hydraulic cylinder 26 expands and contracts, the upper and lower links 21, 21, 22, 22 rotate around the support shaft on the link base 20 side, and the planting section 4 moves up and down.

The planting section 4 has a six-row planting structure, and three sets of upper and lower two-stage seedling platforms 30, 30,... The seedling tray transport paths 31,... Are connected to the ends. Each seedling tray transport path 3
Numeral 1 is formed in a substantially U-shape in side view, in which seedling trays supplied one by one from the seedling mounting tables 30, 30 are transported downward in the first half, the transport direction is gradually changed in the middle, and transported upward in the second half. ing. As the seedling tray, a flexible seedling tray in which seedlings are housed one by one in seedling pots arranged in many rows and columns is used.

A seedling tray feeder 32 for transferring the seedling tray along the seedling tray transfer path 31 corresponding to each of the seedling tray transfer paths 31, And a seedling transfer device 34 for transferring the picked seedlings from the seedling tray in a row along the horizontal side of the pot, and transferring the picked-up seedlings in a locus that draws an arc forward and downward.
And a seedling removal device 35 for extracting seedlings from the seedling transfer device;
Seedling lateral feeders 36, 36 for laterally feeding the extracted one row of seedlings halfway to the left and right sides;
There are provided seedling planting devices 37, 37 for taking the seedlings conveyed by 36 and planting them in the field. That is,
The seedling tray transport path 31, the seedling tray feeding device 32, the seedling removal device 33, the seedling transporting device 34, and the seedling removing device 35 constitute one set of two lines. At the exit of the seedling tray transport path 31, there is provided an empty box housing frame 38 which can accommodate a plurality of empty seedling trays after the seedlings have been taken out at the seedling take-out position P in a vertically stacked state. ing.

The planting section frame supporting each of these devices is disposed inside the U-shape of the main frame 40 and the seedling tray transport paths 31,... Provided horizontally below the seedling tray transport paths 31,. Seedling tray feed / seedling removal drive case 4
1,..., Connecting frames 42, 42 for connecting adjacent seedling tray feed / seedling removal drive cases, main frame 4
And upper and lower transmission frames 4 for connecting the outer surface portions of the right and left end portions and the left and right end seedling tray feed / seedling drive cases 41, 41.
3, 43, main frame 40 and connecting frames 42, 4
, The four seedling transmission frames 45 projecting rearwardly from the main frame 40 at equal intervals, the seedling tray feeding / seedling drive case 41,.
Seedling table support frame 46 with its base fixed to the upper surface of
And so on.

The planting section frame includes a lower main frame 40 provided in the left-right direction and a seedling tray feed / seedling removal drive case 41 arranged in the left-right direction.
The upper frame connected by the upper and lower frames 2 and 42 is connected to the upper and lower frames 43 and 43 and the upper and lower frames 44 and 44 in a ladder-like configuration, so that the rigidity is high.
Further, the upper end portions of the upper and lower transmission frames 43, 43 and the upper and lower frames 44, 44 and the rear end portions of the planting transmission frames 45,... Are connected by oblique reinforcing frames 47,. Is being planned. For this reason, the respective devices can be mounted without difficulty, and the seedling mounting tables 30, 30,..., And the seedling tray transport paths 31,.

Further, as will be described later, by providing a transmission mechanism for each device inside the planting section frame supporting each device, the number of components can be reduced and the appearance can be reduced. Further, since the case 41 for accommodating the later described cams 66 and 81 having a large size is arranged inside the U-shape of the seedling tray transport path 31, the whole structure is compact.

A planting portion support bracket 48 having a U-shape in a plan view is fixed to the front portion of the main frame 40, and a pipe 48a attached thereto and a flange portion of the connecting frames 42, 42 support the planting portion. They are connected via 49,49. The rolling shaft 24 is rotatably inserted into a bearing case 50 provided at the center of the front end of the planting portion support bracket 47, and supports the planting portion 4 in a freely rolling manner.

A center float 52 is provided below the planting section 4.
And a pair of left and right side floats 53, 53. During the planting operation, these floats slide while leveling the field scene. Each of the floats 52, 53, 53 is provided with a groove-forming device 54, which forms a groove for fertilization in a field scene near the seedling planting position of each line, and has a rear opening having a cross section in a plan view at the rear side. Are attached, and fertilizing hoses 5d for transferring the fertilizer fed from the fertilizer feeding device 5b are connected to each of the strips.

The center float 52 is also a sensor for detecting irregularities in the field scene. During planting work, the vertical movement of the front end of the center float 52 is detected by the vertical movement detecting mechanism 55, and the hydraulic cylinder is operated in accordance with the detection result. The planting depth of the seedlings is always kept constant by switching the control valve (3) to move the planting part 4 up and down. In addition, each float 5
2, 53, 53 are attached to float support arms 58,... Which rotate integrally with the planting depth adjusting shaft 57 in the left-right direction, and rotate the planting depth adjusting shaft 57 to attach the float. To adjust the planting depth of the seedlings.

Next, the configuration of each section of the planting section 4 will be described. The seedling tray feeder 32 includes a pair of right and left feed claws 6.
0, 60 and locking claws 61, 61 are provided. Feeding claw 6
Numerals 0 and 60 reciprocate up and down along the seedling tray transport path 31, and when moving downward, the seedling tray feed square holes formed at the left and right edges of the seedling tray at the same pitch as the pot pitch. When it engages and moves upward, it operates so as to be disengaged from the square hole and get over to the next square hole. The locking claws 61, 61 are interlocked with the operation of the feed claws 60, 60, and are disengaged from the square holes when the feed claws 60, 60 move downward, and engage with the square holes when the feed claws 60, 60 move upward. Act to support the seedling tray. These feed claws 60, 60 and locking claws 61, 61
The seedling tray is intermittently fed along the seedling tray transport path 31 by the arrangement pitch of the pots. The feeding operation of the seedling tray feeding device 32 is performed when the seedling pushing pins 72,... Of the seedling extracting device 33 described later are not inserted into the pot of the seedling tray. In addition, on the upper side of the feeding claws 60, 60 and the locking claws 61, 61, the locking claws 61, 61 protrude into the seedling tray transport path in conjunction with exiting from the square hole of the preceding seedling tray, and are transferred to the seedling tray transport path. Blocking claws 63, 63 for temporarily receiving a subsequent seedling tray sliding down the road 31 are provided.

The operation mechanism of the seedling tray feeder 32 is shown in FIG.
As shown in FIG. 10, a seedling tray feed cam 66 is provided on a seedling tray feed / seedling removal cam shaft 65 that penetrates the upper portion of the seedling tray feed / seedling drive case 41 from side to side, and fits into a guide groove 66a of the cam. A seedling tray feed operating arm 68 that rotatably supports the inserted roller 67 is attached to a seedling tray feed drive shaft 69 provided below the seedling tray feed / seedling removal drive case 41 so as to rotate integrally therewith. Seedling tray feed drive arms 70, 70 are integrally attached to the left and right ends of the seedling tray feed drive shaft that protrude out of the case, and feed claws 60, 60 are connected to the tip of the seedling tray feed drive arm. The rotation of the seedling tray feed cam 66 causes the seedling tray feed operating arm 68 to swing, and the swing of the seedling tray feed operating arm 68 is transmitted to the seedling tray feed drive arms 70, 70 via the seedling tray feed drive shaft 69. Then, the feed claws 60 are reciprocated up and down. Feeding claws 60, 60
The operating speed of the feed pawl is slower when operating upwards than when operating downwards, to ensure that the feed claw can get over from one square hole to the next. The feed pawls 6 on both the left and right sides by the rotating force transmitted through the center of the seedling tray feed drive shaft 69.
Since the drive of 0, 60 is performed, there is no difference in the operation amount of the left and right feed claws 60, 60 due to the twist of the seedling tray feed drive shaft 69, and the seedling tray can be fed accurately.

The seedling take-out device 33 includes seedling pushing pins 72 arranged at equal pitches with respect to the horizontal pot of the seedling tray.
Are slide shafts 73 slidably supported in the front-rear direction.
73 are provided so as to operate integrally. As shown in FIGS. 9 and 11, the slide shaft 73 has a rack 73a.
Are formed, and the fan-shaped pinion gear 7 is formed on the rack.
4 are engaged. Another sector gear 76 is attached to a gear shaft 75 to which the pinion gear 74 is attached. The sector gear 76 is provided with a gear portion 79 of a seedling removal operating arm 79 rotatably supported by a support shaft 78.
a. Gear part 7 of seedling removal operating arm 79
A roller 80 is rotatably supported at the end opposite to the end 9a. The roller 80 fits into a guide groove 81a of a seedling picking cam 81 provided on the seedling tray feed / seedling picking cam shaft 65. It is crowded. The rotation of the seedling removal cam 81 causes the slide shafts 73, 73 to slide forward and backward, and when the slide shaft slides backward, the seedling pushing pins 72, 73
Are inserted into the pot through a cut formed at the bottom of the pot into the pot corresponding to one horizontal row of the seedling tray at the seedling removal position P, and the seedling is pushed backward.

The seedling conveying device 34 includes seedling pushing pins 72,.
And a seedling holder 83 formed with a seedling holding portion having a concave shape as viewed from the rear, which communicates with the front and rear. Seedling holder 8
Reference numeral 3 denotes two upper and lower swing links 84, 85, 84, 8
The left and right ends are fixed to support members 86 connected to 5 and reciprocate in a circular locus by the swing of the swing link. As shown in FIGS. 8 and 12, the drive mechanism of the seedling transfer device controls the rotation of the seedling tray feed / seedling cam shaft 65 via the arm 88, the telescopic rod 89, and the arm 90 to move the vertical transmission frame 4
Input shaft 92 of seedling transfer transmission case 91 fixed to 3, 43
To the lower swing link 85 via a pair of transmission gears 93 and 94 from the input shaft.
The base portion is configured to transmit a repetitive rotation motion to a seedling transport drive shaft 95 integrally attached thereto.

By the repetitive rotation of the seedling transport drive shaft 95, the swing links 84, 85, 84, 85 swing up and down, and the seedling holder 83 reciprocates along an arc locus. When the seedling holder 83 is positioned at the upper end of the trajectory, the seedling holding unit receives one row of seedlings pushed out of the seedling tray by the seedling removal device 33, and the seedling holder moves to convey the received seedling to the lower front side. I do. When the swing links 84 and 85 move upward and the seedling holder 83 reaches the upper end of the trajectory, the lower swing link 85 hits the stopper 96 and stops. Arm 88
Still rotates to move the swing link 85 upward, but the rotation of the arm 88 is absorbed by the spring 89a interposed in the telescopic rod 89, and the swing link 85 is stopped by the stopper 96. Will remain. During this time, the seedling holder 83 is stopped at the upper end of the trajectory, so that the seedling removal device 33 reliably transfers the seedlings from the seedling tray to the seedling holder 83.

The seedling transfer drive shaft 95 is provided so as to extend between the left and right seedling transfer transmission cases 91, 91, and a total of four swing links 84, 85 are attached to this. Then, as shown in FIG. 7, the support member 86 (O) connected to the left and right outer swing links and the support member 86 (I) connected to the inner swing link form a left and right set. The seedling holder is supported, and the center set of seedling holders is supported by support members 86 (I) and 86 (I) connected to the two inner swing links. Therefore, the seedling holders 83 of each unit have a structure in which adjacent seedling holders are connected via the support members 86 (I) and 86 (I).
... work together.

The seedling removal device 35 includes a comb-shaped seedling tapper 10 that can pass through the seedling holding portion of the seedling holder 83 back and forth.
0 is provided so as to rotate up and down.
When the seedling 3 has moved to the lower end of the movement locus, the seedling holder 83
The seedling tapping 100 receives the seedlings held in the respective seedling holding portions, and the seedlings are pulled out only by passing through only the seedling holder 83, and the seedling tapping 100 is rotated downward, and the extracted seedlings are fed laterally as described later. Seedling feed belt 11 for devices 36, 36
It is knocked down on 3,113.

The seedling hits 100,... Are integrally attached to a left and right seedling hitting mounting shaft 101 which is rotatably provided as shown in FIGS. Seedling hitting shaft 1
A roller 103 is attached to a rotating arm 102 fixed to the left and right end portions of the cam 01.
The rotating arm 102 is urged by a spring 106 so as to contact the cam surface of the seedling hitting cam 105 attached to the arm. When the seedling hitting cam 105 rotates, the tension of the spring 106 causes the seedling hitting 100 to quickly turn downward when the roller 103 fits into the concave portion of the cam, and to immediately return to the original position. Since the seedling hitting cam 105 is provided between the seedling tray transport path 31 and the vertical transmission frame 44, the seedling hitting cam 105 is jumped up from the mud or the ground falling from the seedling tray being transported through the seedling tray transport path 31 and flies from the side. The coming mud is less likely to adhere to the seedling hitting cam 105, which is preferable in terms of operation accuracy and durability.

The seedling lateral feeder 36 includes a main frame 40.
A seedling feed belt 113 is wound around a drive roller 111 and a driven roller 112 attached to a seedling lateral feed drive shaft 110 protruding rearward from the rear end of the seedling feed belt 113. Two sets with one seedling tray transport path are provided symmetrically to move outward from the center. One row of seedlings N,... Removed by the seedling removing device 35 fall in an aligned state on the seedling feed belts 113 of the two sets of seedling lateral feeding devices, and receive the seedling feed belts. 113, 113 conveys the left and right half seedlings to the left and right sides, respectively. Seedling feed belt 11
The seedling N transported in 3 is dropped between a pair of planting guides 114 provided with an appropriate gap.

The seedling planting device 37 includes a planting transmission frame 45.
A pair of seedling implants 122, 122 are attached to a rotating case 121 that rotates integrally with a planting drive shaft 120 provided at the rear end of the plant, and the seedling implants 122, 122 move along a closed-loop tip trajectory. I do. Each seedling implantation tool 122 alternately takes the seedlings dropped between the planting guides 114, 114 one by one, and moves them between the planting guides 114, 114 to plant the seedlings in the field.

FIG. 7 is a diagram of the transmission mechanism of the planting section. The rotational power from the traveling vehicle body 2 is input to the planting section 4 from an input shaft 130 provided at a position slightly to the right of the left and right centers. The input shaft 130 is drivingly connected to a main transmission shaft 133 as a second transmission shaft rotatably supported inside the main frame 40 via bevel gears 131 and 132. Power is transmitted from the main transmission shaft 133 via bevel gears 135 and 136 to each seedling lateral feed drive shaft 110 provided orthogonally to the main transmission shaft 133. The pair of seedling lateral feed drive shafts 110 of each set rotate in opposite directions to each other. A transmission chain 137 hung on a sprocket 137a attached to the main transmission shaft 133 and a sprocket 137b attached to the plantation drive shaft 120 is provided in the planting transmission frame 45, and is planted from the main transmission shaft 133 by the chain. Drive shaft 1
Transmission to 20.

Further, near the left and right ends of the main transmission shaft 133, the lower ends of the upper and lower transmission shafts 142 (L or R) provided in the left and right upper and lower transmission frames 43 are connected through bevel gears 140 and 141, respectively. are doing. The upper end of the upper and lower transmission shaft 142 is transmission-connected to the left or right end of the seedling tray feed / seedling cam shaft 65 via bevel gears 143 and 144. The seedling tray feed cam 66 and the seedling picking cam 81 are integrally formed on a common cylinder 145 rotatably fitted to the seedling tray feed / seedling removal cam shaft 65, and the seedling tray feeding / seedling camshaft is formed integrally with the cylinder. 65 is externally operated by a fixed position stop clutch 146 so as to be capable of transmission in / off. Thereby, the drive of the seedling tray feeding device 32 and the seedling removal device 33 can be stopped in units of two lines. In addition, the seedling beating camshaft 104 is transmitted from an intermediate portion of the vertical transmission shaft 142 by bevel gears 147 and 148.

The seedling tray feed / seedling removal cam shaft 65 is provided with a shaft 65L provided through the left seedling tray feed / seedling removal drive case 41 and the center and right seedling tray feed / seedling drive case 41. , 41 provided through the shaft 6
5R, and the two shafts 65L and 65R are in a state of being separated from each other by transmission. Therefore, the seedling tray feeder 32 and the seedling take-out device 33 of the left group are the input shaft 130 →
The main transmission shaft 133 → the left vertical transmission shaft 142L → the left seedling tray feed / seedling removal cam shaft 65L is transmitted through the path, and the central and right sets of the seedling tray feeding device 32 and the seedling removal device 33 are driven by the input shaft 130 → Main transmission shaft 133 → right vertical transmission shaft 142
It is transmitted through the path of R → right seedling tray feed / seedling cam shaft 65R. As described above, when an odd number of units such as the seedling tray feeding device 32 and the seedling extracting device 33 are transmitted from the left and right sides of the planting portion, the distance from the input shaft 130 of the main transmission shaft 133 to the upper and lower transmission shaft 142 is reduced. By driving the side with the larger number of units with the shorter one, the twist of the main transmission shaft 133 can be reduced, and the phase difference of each unit can be reduced as much as possible.

As described above, the seedling tray feeder 32, the seedling take-out device 33, the seedling transporter 34, and the seedling extractor 35 are connected to the upper and lower transmission shafts 142L (1
42R), the outermost planted transmission frame 4
5. A cover 4 detachably attached to the outer surface of the front end of the cover 5.
By removing the cover 5a and the cover 40a detachably attached to the back of the main frame 40, the sprocket 137a, the collar 150, and the bevel gear 140 can be pulled out from the main transmission shaft 133 to change the phase of the bevel gear 140. The phase of each of the above devices can be easily adjusted without disassembling the planting portion frame.

The seedling tray feed / seedling removal cam shafts 65 (L and R) include a part 65 a provided in the seedling tray feed / seedling drive case 41, a part 65 b provided in the vertical transmission frame 44, and a connection frame 42. Part 6 provided in
5c are coupled with each other by a coupling 65d, and the respective parts can be separated by removing the C-ring 151 and sliding the coupling 65d in the axial direction. The phase of the seedling tray feeding device 32 and the seedling removing device 33 of each set can be changed by changing the circumferential connection angle of the seedling tray feed / seedling cam shaft 65a of each set. Since the seedling tray feed cam 66 and the seedling picking cam 81 are formed integrally, the phase of the seedling tray feeding device 32 and the seedling picking device 33 does not change, and the seedling pushing pins 72,
… Is inserted into the pot of the seedling tray and feed claw 6
The accident that the seedling tray is damaged by the operation of feeding the seedlings 0 is completely prevented.

A seedling tray feed / seedling removal drive case 4
1, the lid 41a detachably attached to the front portion of the housing 1 can be removed, and the separated shaft portion 65a can be taken out of the case therefrom.
6 is easy to maintain. Since the connecting frame 42 has a U-shaped cross section with an open front side, the separated shaft portion 65c can be easily taken out. The opposite ends of the left and right seedling tray feed / seedling cam shafts 65L and 65R are connected by a coupling.
L and 65R are freely rotatable.

The fixed position stop clutch 146 is a key 1
A first clutch body 146b provided so as to rotate integrally with the seedling tray feed / seedling camshaft 65 via 46a; and a second clutch body 146d provided so as to integrally rotate with the cylinder 146 via a key 146c. Are engaged with the pawls. Under normal conditions, the claws of both clutch bodies are engaged by the tension of the spring 146e and the clutch is engaged. When the clutch pin 146f is pressed against the second clutch body 146d, the pawls of both clutch bodies are disengaged. It runs out. In the case of maintenance or the like, when the fixing bolt 146g for restricting the axial movement of the key 146a is loosened, the cams 66 and 81 and the clutch 146 can be removed from the seedling tray feed / seedling removal camshaft 65a and removed.

The seedling hitting mounting shaft 101 is connected to a main shaft 153 to which the seedling hitting 100 is attached and a cylindrical shaft 154 for connection.
Are alternately connected, and are rotatably supported at both left and right ends by pins 155 fixed to the upper and lower transmission frames 44.
The main shaft portion 153 and the cylindrical shaft portion 154 are connected to each other by inserting the end of the main shaft portion into the end portion of the cylindrical shaft portion. One of the connecting portions is a detent bolt screwed from the outer peripheral portion of the cylindrical shaft portion 154. The front end of the shaft 152 is engaged with the notch surface 153a of the main shaft portion to connect them so as to rotate together, and at the other connecting portion, the flange portions of both are fixed with fixing bolts 155, 1
57 and nuts 158, 158 and are connected so as to rotate integrally. The hole through which the fixing bolt 157 is inserted is formed in an arc shape centered on the axis, and by adjusting the insertion position of the fixing bolt 157 to change the phase angle of the main shaft portion 153, the mounting height of the seedling hitting 100 is increased. Can be changed.

[0034]

As described above, the seedling transplanter according to the present invention transmits power from a drive source to a plurality of seedling removal devices and seedling planting devices by transmitting the power to any one of the above devices. By adopting a configuration in which power is transmitted to the other device by a transmission path arranged at the left and right ends of the planting portion, the number of components of the transmission system can be reduced and the configuration can be simplified, and the left and right intermediate portions of the planting portion can be simplified. Since it is not necessary to provide a transmission mechanism for each strip, maintenance is facilitated, and the gap between strips can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter.

FIG. 2 is a plan view of the seedling transplanter.

FIG. 3 is a side view showing a part of the planting portion.

FIG. 4 is a rear view of the planting section.

FIG. 5 is a rear view of a main part of the planting section.

FIG. 6 is a developed sectional view of the planting section frame.

FIG. 7 is a transmission mechanism diagram of the planting section.

FIG. 8 is a rear cross-sectional view of the upper and lower transmission frames and the periphery thereof.

FIG. 9 is a rear sectional view of the seedling tray feeding / seedling removal drive case.

FIG. 10 is a sectional view taken along line S1-S1 of FIG. 9;

FIG. 11 is a sectional view taken along line S2-S2 of FIG.

FIG. 12 is a side sectional view of a seedling transport drive case.

FIG. 13 is a side view of the seedling removing device.

FIG. 14 is a rear sectional view of the seedling removing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seedling transplanter 2 traveling vehicle body 3 link device 4 planting unit 31 seedling tray transport path 32 seedling tray feed device 33 seedling removal device 34 seedling transport device 35 seedling removal device 36 seedling lateral feed device 37 seedling planting device 40 seedling tray feed Device 65 Seedling tray feed / seedling removal cam shaft (first transmission shaft) 133 Main transmission shaft (second transmission shaft)

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tetsu Kato 1 Yatsukura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. F-term (Reference) 2B060 AA02 AA10 AD05 AE01 AE10 BA04 BA07 BA09 CA06 CB09 CB17 CB23 2B062 AA14 AA20 AB01 BA14

Claims (1)

[Claims] 1. A seedling tray transport path for transporting seedling trays in which a large number of pots for accommodating seedlings one by one are arranged vertically and horizontally is provided in a plurality of rows in parallel on the left and right, and seedling trays are transferred from the seedling tray being transported through the seedling tray transporting path. In a seedling transplanter provided with a seedling extracting device for extracting the seedlings and a seedling planting device for planting the seedlings extracted by the seedling extracting device in a field, each of the seedling extracting devices is transmitted to each of the seedling extracting devices. A first transmission shaft in the left and right direction, and a second transmission shaft in the left and right direction transmitting to each seedling planting device are provided, and power from a driving source is transmitted to the first transmission shaft or the second transmission shaft. And a transmission system configured to transmit power from the left and right ends of the transmission shaft to the left and right ends of the other transmission shaft.