JP3887960B2 - Seedling transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transmission configuration of a planting unit in a multi-row seedling transplanter that takes out seedlings from each pot of a seedling tray in which a large number of pots each containing seedlings are arranged vertically and horizontally, and plants them in a field.
[0002]
[Prior art]
As a seedling transplanting machine for pot seedlings, a seedling tray is conveyed along a substantially U-shaped seedling tray conveying path in a side view provided in parallel on the left and right according to the number of planting strips, and from the seedling tray being conveyed The seedlings are pushed out and taken out by the seedling picking device provided in the U-shaped inner part of the seedling tray transport path, and the taken seedlings are planted in the field by the seedling planting device provided at the lower rear side of the seedling tray transporting path. Some are configured to be attached. Conventionally, the transmission system of the planting part in this kind of seedling transplanter transmits the power from the drive source to the transmission shaft in the left and right direction arranged below the seedling tray conveyance path, and each seedling extracting device from the transmission shaft And branching to each seedling planting device.
[0003]
[Problems to be solved by the invention]
In the conventional seedling transplanting machine, the transmission means from the transmission shaft to the seedling picking device is provided in a narrow space between the adjacent seedling tray conveyance path and the seedling tray conveyance path. In addition, when adjusting the operation timing of the seedling extraction device, it is necessary to adjust each transmission means to each seedling extraction device, which is troublesome. Actually, other devices attached to the seedling picking device are also provided inside the U-shaped portion of the seedling tray conveying path, and the transmission means from the transmission shaft to these devices is also connected to the seedling tray conveying path and the seedling. It is provided in the space between the tray conveyance paths. For this reason, when it was set as the structure transmitted to a seedling picking apparatus and the apparatus accompanying this from a transmission shaft for every row | line, the number of parts was many and the structure was complicated. The present invention has an object to solve these problems and is configured as follows.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, the seedling transplanting machine according to the present invention is provided with three rows of seedling tray conveying paths for conveying seedling trays in which a large number of pots for storing seedlings one by one are arranged vertically and horizontally, and conveying the seedling tray conveying paths. In a seedling transplanting machine provided with a seedling extracting device for extracting seedlings from a seedling tray inside, and a seedling planting device for planting seedlings extracted by the seedling extracting device in a field, corresponding to each seedling tray conveyance path, A first transmission shaft in the left-right direction that is transmitted to each seedling extraction device and a second transmission shaft in the left-right direction that is transmitted to each seedling planting device are provided, and the first transmission shaft is transported in the three rows of seedling trays. Of the road, the left shaft that transmits to the left set of seedling picking devices and the right shaft that transmits to the center and right set of seedling picking devices are separated on the left and right, and the power from the drive source is centered on the left and right. It is transmitted to the second transmission shaft via the input shaft provided at the right side position. The transmission system is configured to transmit from the left and right end portions of the second transmission shaft to the left and right first transmission shafts via the upper and lower transmission shafts in the left and right upper and lower transmission frames. A seedling conveying device for conveying, a seedling extracting device for extracting a seedling from the seedling conveying device, a seedling laterally feeding device for laterally feeding the extracted seedling, and a seedling conveyed by the seedling laterally feeding device A seedling tapping cam that rotates the seedling tapping up and down by providing a seedling tapping that can pass through the seedling holding portion of the seedling holder. It is characterized by being provided between the tray conveyance path .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments shown in the drawings will be described. This seedling transplanter 1 has a six-planted planting part 4 mounted on the rear side of a riding traveling vehicle body 2 via a link device 3 so as to be movable up and down. Five fertilizer hoppers 5a and fertilizer feeding devices 5b for feeding the fertilizer for each strip are arranged. This seedling transplanter 1 is for planting rice seedlings in paddy fields, but the present invention is not limited to this, and can also be applied to a seedling transplanter for planting vegetable seedlings in a field.
[0006]
The traveling vehicle body 2 includes a pair of left and right steerable front wheels 6 and 6 that are driven and rotated and a pair of left and right rear wheels 7 and 7 that are driven and rotated. A transmission case 9 is disposed on the front side of the frame 8 and an engine E is disposed on the rear side. The rotational power of the engine E, which is mounted, is once transmitted to the hydraulic pump attached to the upper part of the transmission case 9 by the belt transmission device 10 and then transmitted into the transmission case 9 by the belt transmission device 11 capable of continuously variable speed operation. The The power shifted by the transmission in the transmission case 9 is transmitted to the front wheels 6 and 6 and the rear wheels 7 and 7, and is transmitted to the planting portion 4 via the transmission shaft 9a, the intermediate gear case 9b, and the transmission shaft 9c. Be transmitted. In the figure, 12 is a handle for steering the front wheels 6 and 6, 13 is a seat on which the operator sits, 14 is a step floor for the operator to move on the traveling vehicle body, and 15 is a spare seedling. A spare seedling stage 16 to be placed is a drawing marker for drawing the course of the traveling vehicle body 2 in the next stroke to the field scene.
[0007]
In the link device 3, upper links 21 and 21 and lower links 22 and 22 are rotatably attached to a link base 20 fixed to the rear end portion of the frame 8 of the traveling vehicle body 2, and connected to the rear end portions of the upper and lower links. The frame 23 is connected. And the front end part of the rolling shaft 24 rotatably supported by the planting part 4 side is inserted and connected to the lower end part of the connection frame 23. Thereby, the planting part 4 is mounted | worn with rolling with respect to the advancing direction. Further, a hydraulic cylinder 26 for driving the link device 3 is provided with a base side attached to the frame 8, and an arm 27 whose piston rod side is integrally fixed downward from the base of the upper links 21, 21. It is connected to the tip of the through a spring. When the hydraulic cylinder 26 expands and contracts, the upper and lower links 21, 21, 22, 22 rotate about the support shaft on the link base 20 side, and the planting part 4 moves up and down.
[0008]
The planting part 4 has a six-row planting structure, and three sets of upper and lower two-stage seedling platforms 30, 30,... The seedling tray conveyance path 31, ... is connected. Each seedling tray conveyance path 31 conveys seedling trays supplied one by one from the seedling mounts 30 and 30 downward in the first half, gradually changes the conveyance direction in the middle, and conveys upward in the second half. It is formed in a letter shape. As the seedling tray, a flexible seedling tray is used in which seedlings are accommodated one by one in a seedling pot arranged in a large number of lengthwise and laterally.
[0009]
A seedling tray feeding device 32 that transports the seedling tray along the seedling tray transporting path 31 corresponding to each seedling tray transporting path 31, and a seedling tray that is being transported at the seedling extraction position P of the seedling tray transporting path 31. A seedling picking device 33 for picking out seedlings from the pot side by row, a seedling transporting device 34 for transporting the picked seedlings in a trajectory that draws an arc on the lower front side, and a seedling extracting device for extracting seedlings from the seedling transporting device 35, seedling horizontal feeding devices 36, 36 for laterally feeding the extracted seedlings for one horizontal row to the left and right sides in half, and taking the seedlings conveyed by the seedling horizontal feeding devices 36, 36 into the field Seedling planting devices 37 and 37 for planting are provided. That is, the seedling tray conveying path 31, the seedling tray feeding device 32, the seedling extracting device 33, the seedling conveying device 34, and the seedling removing device 35 form one set in two. In addition, an empty box housing frame 38 that can accommodate a plurality of empty seedling trays after the seedlings have been taken out at the seedling extraction position P is provided at the exit of the seedling tray transport path 31. ing.
[0010]
The planting part frame that supports each of these devices is a main frame 40 provided horizontally horizontally on the lower side of the seedling tray transport path 31,..., A seedling tray disposed inside the U-shape of the seedling tray transport path 31,. Feeding / seedling drive case 41,..., Connecting frames 42 and 42 for connecting adjacent seedling tray feeding / seedling driving cases, seedling tray feeding / seedling driving case 41 at the left and right ends of the main frame 40 , 41, upper and lower transmission frames 43, 43 for connecting the outer surface portions, upper and lower frames 44, 44 for connecting the main frame 40 and the connection frames 42, 42, and four planting transmissions protruding rearward from the main frame 40 at equal intervals The frame 45,..., The seedling tray feeding / seedling drive case 41,...
[0011]
This planting part frame includes a lower main frame 40 provided in the left-right direction, and an upper frame formed by connecting seedling tray feeding / seedling extraction drive cases 41 arranged in the left-right direction by connecting frames 42, 42. Are structured in a ladder shape in a rear view in which the upper and lower transmission frames 43 and 43 and the upper and lower frames 44 and 44 are connected to each other. 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 reinforcement frames 47,. I am trying. For this reason, each apparatus can be attached without difficulty, and the seedling platforms 30, 30,..., And the seedling tray transport paths 31,.
[0012]
Further, as will be described later, by providing a power transmission mechanism for each device inside the planting part frame that supports each device, the number of parts can be reduced and the appearance is made clear. Furthermore, since the case 41 that accommodates the later-described cams 66 and 81 having a large size is disposed inside the U-shape of the seedling tray conveying path 31, the entire structure is made compact.
[0013]
A planting portion support bracket 48 having a U-shape in plan view is fixed to the front surface of the main frame 40, and plates 49, 49 are supported by the pipes 48a attached thereto and the flange portions of the connecting frames 42, 42. It is connected through. The rolling shaft 24 is rotatably inserted into a bearing case 50 provided at the center of the front end of the planting part support bracket 47, and supports the planting part 4 so as to be able to roll.
[0014]
A center float 52 and a pair of left and right side floats 53, 53 are provided at the lower part of the planting part 4, and during the planting operation, these floats slide while leveling the field scene. Each of these floats 52, 53, 53 is provided with a grooving device 54,... For forming a fertilizer groove in a field near the seedling planting position of each strip, and a cross section in plan view is opened rearward on the rear side. Of U-shaped fertilization guides 5c, ... are attached, and fertilization hoses 5d, ... for transferring fertilizers fed from the fertilizer feeding devices 5b, ... are connected to each strip.
[0015]
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 detection mechanism 55, and the control valve of the hydraulic cylinder is detected according to the detection result. The planting depth of the seedlings is always kept constant by switching up and down and raising and lowering the planting part 4. Each float 52, 53, 53 is attached to a float support arm 58, which rotates integrally with the planting depth adjustment shaft 57 in the left-right direction, and the planting depth adjustment shaft 57 is rotated to float. The planting depth of the seedling is adjusted by changing the mounting height.
[0016]
Next, the structure of each part of the planting part 4 is demonstrated.
The seedling tray feeding device 32 includes a pair of left and right feeding claws 60 and 60 and locking claws 61 and 61. The feed claws 60, 60 reciprocate up and down along the seedling tray transport path 31, and when they move down, the seedling tray feed corners formed at the left and right edge portions of the seedling tray at the same pitch as the pot pitch. When engaged with a hole and moved upward, the engagement with the square hole is disengaged, and it operates to 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. Operates to support the seedling tray. By the operation of the feeding claws 60 and 60 and the locking claws 61 and 61, the seedling tray is intermittently fed along the seedling tray conveyance 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 extraction device 33 described later are not inserted into the seedling tray pot. In addition, on the upper side of the feeding claws 60, 60 and the locking claws 61, 61, the locking claws 61, 61 project into the seedling tray conveyance path in conjunction with the escape from the square hole of the preceding seedling tray, and the seedling tray conveyance Blocking claws 63 and 63 are provided to temporarily receive the subsequent seedling tray sliding down the path 31.
[0017]
As shown in FIGS. 9 and 10, the operation mechanism of the seedling tray feeding device 32 includes a seedling tray feeding / seedling extraction cam shaft 65 that penetrates the upper part of the seedling tray feeding / seedling extraction drive case 41 to the left and right. The seedling tray feed driving shaft 69 provided below the seedling tray feed / seedling drive case 41 is provided with a seedling tray feed operating arm 68 that rotatably supports the roller 67 fitted in the guide groove 66a of the cam. The seedling tray feed driving arm 70 is attached to the left and right end portions of the seedling tray feed driving shaft that protrude outside the case, and is attached to the tip of the seedling tray feed driving arm. The feed claws 60, 60 are connected. The rotation of the seedling tray feed cam 66 causes the seedling tray feed operating arm 68 to swing, and the swinging of the seedling tray feed operating arm 68 is transmitted to the seedling tray feed drive arms 70 and 70 via the seedling tray feed drive shaft 69. The feed claws 60, 60 are reciprocated up and down. In order to ensure that the feed claws 60, 60 can get over from one square hole to the next square hole, the operation speed of the feed claws is slower than when it works upward than when it operates downward. Since the feeding claws 60, 60 on both the left and right sides are driven by the rotational force transmitted through the center portion of the seedling tray feed driving shaft 69, the operation amount of the left and right feeding claws 60, 60 due to the twist of the seedling tray feed driving shaft 69 Therefore, the seedling tray can be sent accurately.
[0018]
The seedling extraction device 33 is configured so that the seedling pushing pins 72,... Arranged in the same number and pitch with respect to the lateral pot of the seedling tray operate integrally with slide shafts 73, 73 supported so as to be slidable in the front-rear direction. Is provided. As shown in FIGS. 9 and 11, a rack 73a is formed on the slide shaft 73, and a fan-shaped pinion gear 74 is engaged with the rack. Further, another fan gear 76 is attached to the gear shaft 75 to which the pinion gear 74 is attached. The sector gear 76 meshes with a gear portion 79 a of a seedling extraction operating arm 79 that is rotatably supported by a support shaft 78. A roller 80 is rotatably supported at the end of the seedling extraction arm 79 opposite to the gear portion 79a. The roller 80 is provided on the seedling tray feed / seedling extraction cam shaft 65. The cam 81 is fitted in the guide groove 81a. When the seedling removal cam 81 rotates, the slide shafts 73, 73 slide back and forth, and when the slide shaft slides backward, the seedling push-out pins 72,... Correspond to the horizontal row of the seedling tray at the seedling extraction position P. The pot is inserted into the pot through the cut formed at the bottom of the pot, and the seedling is pushed backward.
[0019]
The seedling transporting device 34 includes a seedling holder 83 in which a seedling holding portion having a concave shape in a rear view that communicates with the seedling extruding pins 72,. The seedling holder 83 has both left and right ends fixed to support members 86, 86 connected to the upper and lower swing links 84, 85, 84, 85. It draws and reciprocates. As shown in FIGS. 8 and 12, the drive mechanism of the seedling conveying device is configured to rotate the seedling tray feeding / seeding removal cam shaft 65 via the arm 88, the telescopic rod 89, and the arm 90, and the vertical transmission frame 43. , 43 is transmitted to the input shaft 92 of the seedling transfer transmission case 91 as a repetitive rotational movement, and the base of the lower swing link 85 is integrated from the input shaft via a pair of transmission gears 93, 94. It is comprised so that repeated rotation motion may be transmitted to the seedling conveyance drive shaft 95 attached to the.
[0020]
By 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 located at the upper end of the trajectory, the seedling holding unit receives seedlings for one horizontal row pushed out from the seedling tray by the seedling extracting device 33, and the seedling holder moves to convey the received seedlings to the lower front side. To do. When the swing links 84 and 85 move upward and the seedling holder 83 reaches the upper end of the locus, the lower swing link 85 hits the stopper 96 and stops. The arm 88 still rotates and tries to move the swing link 85 upward. However, the rotation of the arm 88 is absorbed by the spring 89 a interposed in the telescopic rod 89, and the swing link 85 is stopped by the stopper 96. Stay stopped. During this time, since the seedling holder 83 is stopped at the upper end of the trajectory, the seedling transfer device 33 reliably transfers the seedling from the seedling tray to the seedling holder 83.
[0021]
The seedling transport drive shaft 95 is provided between the left and right seedling transport transmission cases 91 and 91, and a total of four sets of swing links 84 and 85 are attached thereto. 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 constitute a pair of left and right. The seedling holder is supported, and the centering seedling holder is supported by the support members 86 (I) and 86 (I) connected to the two inner sets of swing links. Therefore, the seedling holders 83,... Of each unit are integrally operated with a structure in which the adjacent seedling holders are connected to each other via the support members 86 (I), 86 (I).
[0022]
The seedling removal device 35 is provided such that a comb-shaped seedling hitting 100 that can pass back and forth through the seedling holding portion of the seedling holder 83 is rotated up and down, and when the seedling holder 83 moves to the lower end of the movement locus. The seedling tapping 100 receives the seedling held in each seedling holding part of the seedling holder 83 and passes only the seedling holder 83 to extract the seedling, and the seedling tapping 100 rotates downward to remove the extracted seedling It is knocked down onto the seedling feeding belts 113, 113 of the seedling lateral feeding devices 36, 36 described later.
[0023]
As shown in FIGS. 13 and 13, the seedling hitting 100,... Are integrally attached to a left and right seedling hitting attachment shaft 101 provided rotatably. A roller 103 is attached to the rotating arm 102 fixed to the left and right ends of the seedling tapping attachment shaft 101, and the spring contacts the cam surface of the seedling tapping cam 105 attached to the seedling tapping cam shaft 104. The rotating arm 102 is urged at 106. When the seedling tapping cam 105 rotates, the seedling tapping 100 is quickly rotated downward by the tension of the spring 106 when the roller 103 is fitted in the concave portion of the cam, and operates so as 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 jumps up from the mud falling from the seedling tray being transported through the seedling tray transport path 31 or the ground and flies from the side. The mud is difficult to adhere to the seedling hitting cam 105, which is preferable in terms of operation accuracy and durability.
[0024]
The seedling feed device 36 is configured by winding a seedling feed belt 113 around a drive roller 111 and a driven roller 112 attached to a seedling transverse feed drive shaft 110 protruding rearward from the main frame 40. Two sets of one seedling tray conveyance path are provided symmetrically so that the upper surface of 113 moves outward from the left and right center of the seedling tray conveyance path. The seedlings N,... For one horizontal row removed by the seedling removing device 35 fall in an aligned state on the seedling feeding belts 113, 113 of the two sets of seedling transverse feeding devices and receive the seedling feeding belts 113 and 113 convey the seedlings of the left and right halves to the left and right sides, respectively. The seedling N conveyed by the seedling feeding belt 113 is dropped between a pair of planting guides 114 and 114 provided with an appropriate gap.
[0025]
In the seedling planting device 37, a pair of seedling planting tools 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 planting transmission frame 45. 122 and 122 move in a closed-loop tip locus. Each seedling transplanter 122 alternately takes seedlings dropped between the planting guides 114 and 114, and moves them between the planting guides 114 and 114 to plant them in the field.
[0026]
FIG. 7 is a transmission mechanism diagram of the planting part. Rotational power from the traveling vehicle body 2 is input to the planting unit 4 from an input shaft 130 provided at a position slightly to the right of the left and right center. The input shaft 130 is connected to a main transmission shaft 133 which is a second transmission shaft rotatably supported inside the main frame 40 via bevel gears 131 and 132. The main transmission shaft 133 is transmitted via bevel gears 135 and 136 to each seedling lateral feed drive shaft 110 provided orthogonal thereto. The pair of seedling transverse feed drive shafts 110, 110 of each set rotate in opposite directions. In the planting transmission frame 45, a sprocket 137a attached to the main transmission shaft 133 and a transmission chain 137 hung on the sprocket 137b attached to the planting drive shaft 120 are provided, and the chain is planted from the main transmission shaft 133 by the chain. It is transmitted to the attached drive shaft 120.
[0027]
Further, the main transmission shaft 133 is connected to the lower end portions of the upper and lower transmission shafts 142 (L or R) provided in the left and right upper and lower transmission frames 43 via bevel gears 140 and 141 in the vicinity of the left and right ends thereof. . The upper end portion of the vertical transmission shaft 142 is connected to the left end portion or the right end portion of the seedling tray feeding / seeding removal cam shaft 65 through bevel gears 143 and 144. The seedling tray feed cam 66 and the seedling extraction cam 81 are integrally formed on a common cylinder 145 that is rotatably fitted to the seedling tray feeding / seedling extraction cam shaft 65, and the cylinder and the seedling tray feeding / seedling extraction cam shaft 65 is connected by a fixed position stop clutch 146 that operates externally so that transmission can be turned on and off. Thereby, the drive of the seedling tray feeding device 32 and the seedling extracting device 33 can be stopped in units of two. Further, it is transmitted from the intermediate portion of the vertical transmission shaft 142 to the seedling hitting cam shaft 104 by bevel gears 147 and 148.
[0028]
The seedling tray feeding / seedling extraction camshaft 65, which is the first transmission shaft, has a shaft 65L provided through the left seedling tray feeding / seedling extraction driving case 41 and the center and right seedling tray feeding / seedling extraction. It comprises a shaft 65R provided through the drive cases 41, 41, and both the shafts 65L, 65R are in a state of being separated from each other by transmission. Therefore, the seedling tray feeding device 32 and the seedling extracting device 33 of the left group are transmitted by the path of the input shaft 130 → the main transmission shaft 133 → the left vertical transmission shaft 142L → the left seedling tray feeding / seedling extraction cam shaft 65L, The seedling tray feeding device 32 and the seedling picking device 33 of the center and right set are transmitted through a path of the input shaft 130 → the main transmission shaft 133 → the right vertical transmission shaft 142R → the right seedling tray feeding / seedling extraction cam shaft 65R. . Thus, in the case where 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 by an odd number, the distance from the input shaft 130 to the vertical transmission shaft 142 in the main transmission shaft 133 is By driving the side with a larger number of units in a shorter direction, 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.
[0029]
As described above, the seedling tray feeding device 32, the seedling extracting device 33, the seedling conveying device 34, and the seedling removing device 35 are transmitted by the vertical transmission shafts 142L (142R) provided on the left and right sides of the planting part. The sprocket 137a and the collar 150 are removed by removing the cover 45a removably attached to the outer surface of the front end of the outermost planting transmission frame 45 and the cover 40a removably attached to the back of the main frame 40. The bevel gear 140 can be extracted from the main transmission shaft 133 to change the phase of the bevel gear 140, and the phase adjustment of each device can be easily performed without disassembling the planting part frame.
[0030]
The seedling tray feeding / seedling extraction cam shaft 65 (L and R) is provided in a portion 65 a provided in the seedling tray feeding / seedling extraction drive case 41, a portion 65 b provided in the vertical transmission frame 44, and a connection frame 42. Each of the portions 65c is transmission-coupled by a coupling 65d, and each portion can be separated by removing the C-ring 151 and sliding the coupling 65d in the axial direction. And the phase of the seedling tray feed device 32 and the seedling extraction device 33 of each group can be changed by changing the connection angle in the circumferential direction of the seedling tray feeding / seedling extraction cam shaft 65a of each group. Since the seedling tray feed cam 66 and the seedling extraction cam 81 are integrally formed, the phase of the seedling tray feeding device 32 and the seedling extraction device 33 does not get out of phase, and the seedling pushing pins 72,... The accident that the feeding claw 60 operates to feed the seedling and breaks the seedling tray when it is inserted is completely prevented.
[0031]
Further, the lid 41a detachably attached to the front portion of the seedling tray feed / seedling extraction drive case 41 is removed, and the separated shaft portion 65a can be taken out of the case from there, so that the cams 66 and 81 and the fixed position stop clutch The maintenance of 146 is easy. Since the connection frame 42 has a U-shaped cross section with the front side open, the separated shaft portion 65c can be easily taken out. The opposing ends of the left and right seedling tray feeding / seeding removal cam shafts 65L and 65R are coupled by couplings, and the couplings are rotatable with respect to both shafts 65L and 65R.
[0032]
The fixed position stop clutch 146 rotates integrally with the first clutch body 146b provided so as to rotate integrally with the seedling tray feeding / seeding removal cam shaft 65 via the key 146a and the cylinder 146 via the key 146c. The claws of the two clutch bodies are engaged with each other by the tension of the spring 146e to engage the clutch, and the clutch pin 146f is pressed against the second clutch body 146d. And the claws of both clutch bodies come off and the clutch is disengaged. In the case of maintenance or the like, if the fixing bolt 146g that restricts the movement of the key 146a in the axial direction is loosened, the cams 66 and 81 and the clutch 146 can be removed from the seedling tray feeding / seeding removal cam shaft 65a.
[0033]
The seedling tapping attachment shaft 101 is formed by alternately connecting a main shaft portion 153 to which the seedling tapping 100 is attached and a connecting cylindrical shaft portion 154, and is rotatable to pins 155 fixed to the vertical transmission frame 44 at both left and right end portions. It is supported by. The main shaft portion 153 and the cylindrical shaft portion 154 are connected to each other by inserting the end portion of the main shaft portion into the end portion of the cylindrical shaft portion, and one of the connection portions is a detent bolt screwed from the outer peripheral portion of the cylindrical shaft portion 154 The front end of 152 is engaged with the notch surface 153a of the main shaft portion so as to rotate the two integrally, and at the other connecting portion, both flange portions are joined by fixing bolts 155 and 157 and nuts 158 and 158. Are connected to rotate together. The hole through which the fixing bolt 157 is inserted has an arc shape centered on the axis, and the mounting height of the seedling hitting 100 is adjusted by changing the phase angle of the main shaft portion 153 by adjusting the insertion position of the fixing bolt 157. Can be changed.
[0034]
【The invention's effect】
As described above, the seedling transplanting machine according to the present invention transmits the power from the drive source to the plurality of seedling extraction devices and the seedling planting device, and then transmits to any one of the above-described devices, and then the planting unit. By adopting a structure that transmits power to the other device through the power transmission path arranged at the left and right ends of the power transmission, the number of parts in the power transmission system can be reduced, and the structure can be simplified. Since it is not necessary to provide a mechanism, maintenance is easy and the gaps can be narrowed. Also, the transmission to the seedling take-out device is driven on the side where the distance from the input shaft to the vertical transmission shaft in the second transmission shaft is shorter, so the number of units in the second transmission shaft is reduced, and each unit is less twisted. Can be made as small as possible. In addition, since the seedling hitting cam is provided between the vertical transmission frame and the seedling tray transport path, mud falling from the seedling tray that is being transported in the seedling tray transport path or splashed from the ground and flying from the side Is less likely to adhere to the seedling hitting cam, and the accuracy and durability of the operation can be improved.
[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 side view showing a part of the planting part.
FIG. 4 is a rear view of the planting part.
FIG. 5 is a rear view of the main part of the planting part. FIG. 6 is a developed sectional view of the planting part frame.
FIG. 7 is a transmission mechanism diagram of a planting part.
FIG. 8 is a rear sectional view of the upper and lower transmission frame and its periphery.
FIG. 9 is a rear sectional view of a seedling tray feeding / seedling extraction driving case.
10 is a cross-sectional view taken along line S1-S1 of FIG.
11 is a cross-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 removal device.
FIG. 14 is a rear cross-sectional view of the seedling removal device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 3 Linking device 4 Planting part 31 Seedling tray conveyance path 32 Seedling tray feeding device 33 Seedling extraction device 34 Seedling conveying device 35 Seedling removal device 36 Seedling lateral feeding device 37 Seedling transplanting device 40 Seedling tray feeding Device 65 Seedling tray feed and seedling removal cam shaft (first transmission shaft)
133 Main transmission shaft (second transmission shaft)

Claims (1)

A seedling extraction device for providing three rows of seedling tray conveyance paths for conveying a seedling tray in which a large number of pots each containing seedlings are arranged vertically and horizontally, and for extracting seedlings from a seedling tray that is being conveyed through the seedling tray conveyance path And a seedling transplanting device provided with a seedling planting device for planting the seedling extracted by the seedling extracting device in a field corresponding to each seedling tray conveyance path, the first in the left-right direction transmitted to each seedling extracting device One transmission shaft and a second transmission shaft in the left-right direction that is transmitted to each seedling planting device are provided, and the first transmission shaft is used as a seedling picking device of the left group in the three rows of seedling tray conveyance paths. The left shaft that is transmitted to the center and the right shaft that is transmitted to the center and right set seedling picking device are separated on the left and right, and the power from the drive source is provided via the input shaft that is provided at the right position from the left and right center. Transmission to the second transmission shaft, each left and right from the left and right ends of the second transmission shaft A transmission system is configured to transmit to the left and right first transmission shafts via the upper and lower transmission shafts in the upper and lower transmission frames, and a seedling transporting device for transporting the taken out seedlings with a seedling holder, and a seedling from the seedling transporting device. A seedling extracting device for extracting the seedling, a seedling laterally feeding device for laterally feeding the extracted seedling, and a seedling planting device for taking the seedling conveyed by the seedling laterally feeding device and planting the seedling in a farm, The apparatus is provided with a seedling tapping that can pass through the seedling holding portion of the seedling holder, and a seedling tapping cam for vertically rotating the seedling tapping is provided between the vertical transmission frame and the seedling tray conveying path. Seedling transplanter.

Images