JP3291163B2 - Power transmission for transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission for an implanting machine.

[0002]

2. Description of the Related Art In a transplanter, an implanting means is connected to an engine via a swinging link mechanism and the like, and the implanting means is moved up and down by the rotational power of the engine. In some cases, seedlings are supplied at the time of planting, and the seedlings are transplanted by piercing the ridge at the bottom dead center.

Conventionally, in this type of power transmission device for a transplanter, an electromagnetic clutch for disconnecting and connecting the engine and the implanting means is provided, and when the implanting means reaches a predetermined stop position (top dead center), the electromagnetic clutch is disengaged. Is temporarily cut (switched from on to off) to stop the planting means, receive the seedlings here, and adjust the stop time of the raising and lowering of the planting means to obtain a predetermined planting interval which is the planting interval. (For example, Japanese Patent Application No. 4-270519).

[0004]

In the above-mentioned prior art, even if the electromagnetic clutch is disconnected, the planting means cannot be stopped immediately due to the inertial force, but is stopped by the speed at which the planting means moves up and down. There has been a problem that the positions vary, which makes it difficult to receive the seedlings smoothly.

The present invention has been made in consideration of the above problems, and has as its main object to consider so that the planting means can be accurately stopped at a predetermined stop position.

[0006]

The technical means taken by the present invention to achieve the above-mentioned object is to move up and down by rotation of the drive shaft 71, supply seedlings on the ascending side, and transfer seedlings to the field on the descending side. A clutch 38 is provided between the drive shaft 71 and the drive source 17 for connecting and disconnecting power transmission. When the plant 61 reaches a predetermined stop position on the ascending side, the clutch 38 is disengaged. In the power transmission device of the transplanter that is temporarily cut to stop the implanted body 61, a moving body 99 that rotates together with the drive shaft 71 is provided, and a predetermined stop of the implanted body 61 is performed. In this position, there is provided a braking body 96 with which the moving body 99 comes into contact so as to brake the raising / lowering operation of the planted body 61, and the braking body 96 is located on the rear side in the rotation direction A of the moving body 99 when the planted body 61 is stopped. , The outer peripheral edge of the rotation locus of the moving body 99 Projects radially inward from the trace B moving body 9
9 is provided with a reverse rotation preventing portion 100b for preventing the reverse rotation of No. 9.

A cam 85 for rotating and driving the driving shaft 71 in conjunction with the rotation of the driving shaft 71 and for moving the punching means 82 for forming a hole for planting seedlings in the multi-film M in the field by the rotation. Is provided on the cam 85,
Should be provided.

[0008]

When the planting body 61 has reached the predetermined stop position, the clutch 38 is disengaged and the power transmission from the drive source 17 to the drive shaft 71 is cut off. At this time, the moving body 99 that rotates together with the drive shaft 71 comes into contact with the braking body 96, and the planting body 6
1 is stopped, whereby the planted body 61 immediately stops, and the planted body 61 accurately stops at a predetermined stop position.

The reverse rotation preventing unit 10 provided on the brake 96
0b prevents the rotation of the moving body 99. The reverse rotation preventing portion 100b is provided on the rear side of the braking body 96 in the rotation direction A of the moving body 99 in the stopped state of the planted body 61, at the outer peripheral end of the rotation path of the moving body 99. It is configured by projecting radially inward from the locus B, and can be provided at a low cost with a simple configuration. In addition, a cam 85 is provided which is driven to rotate in conjunction with the rotation of the drive shaft 71, and which causes the perforating means 82 for forming a hole for seedling planting in the multi-film M in the field to move up and down by the rotation. By providing a moving body 99 on the cam 85,
The parts can be shared, the device can be made compact, the number of parts can be reduced, and the weight can be reduced.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 7, a vegetable transplanter 11 includes a traveling vehicle 12.
Is a walking type having a steering handle 13 at the rear of the vehicle. The ridge 14 covers the soil block seedling with the multi-film M (see FIG. 4) while running in the longitudinal direction across the ridge 14.
At predetermined intervals.

The traveling vehicle 12 includes a main frame 15, a gantry 16 provided at a front end of the main frame 15, and the like. The main frame 15 is formed of a square pipe or the like, the front part of which is bent downward and is fixed to the side of the gantry 16, and the rear part of which is bent upward so that the steering handle 1 is formed.
3 mounting part. The engine 17 is mounted on the base 16
The engine 17 is covered with a hood 18. A transmission case 19 is fixed to the rear of the gantry 16, and the power of the engine 17 is transmitted to a power transmission mechanism in the transmission case 19.

The power input into the transmission case 19 is transmitted to a wheel transmission shaft 20 projecting left and right, and a first PTO provided rearward of the wheel transmission shaft 20 and projecting left and right. It can be taken out from the shaft 21 and the second PTO shaft 22 projecting rearward and upward.
Right and left driving wheels 24 (rear wheels) are provided at the left and right ends of the wheel transmission shaft 20 via a transmission case 23 that can swing up and down around the axis.
The drive wheels 24 roll in the grooves between the ridges 14. Also, a pair of left and right front wheels 2 is provided at the front of the traveling vehicle 12.
6. A ridge height detection roller 27 is provided.

FIG. 8 shows a power transmission system of a traveling system and a PTO system.
Is transmitted to the input shaft 29. Mission case 19
A rotation shaft 30, an intermediate shaft 31, a back shaft 32, a wheel transmission shaft 20 and a first PTO shaft 21 are rotatably supported in parallel with the input shaft 29, respectively.
2 are provided so as to protrude rearward.

The gear 29a on the input shaft 29 is meshed with the idle gear 33 on the rotary shaft 30, and the clutch gear 34 is slid on the idle gear 33 so that the engagement portion engages with the idle gear. Power can be transmitted from the shaft 29 to the rotating shaft 30. The clutch gear 34 is resiliently pressed in a direction in which it engages with the idle gear 33, and constitutes a pawl-type main clutch.

Between the rotary shaft 30 and the intermediate shaft 31,
Transmission 35 capable of switching between first speed (F ₁ ), second speed (F ₂ ), third speed (F ₃ ), neutral (N), and reverse (R)
Is provided. A transmission gear 3 is provided on the intermediate shaft 31.
6 and a parking brake (not shown) are provided, and the transmission gear 36 meshes with a large gear 37 fixed to the wheel transmission shaft 20. Then, from the wheel transmission shaft 20 to the transmission case 2
Power is transmitted to the drive wheels 24 via the wrapping transmission 25 in 3 so that the drive wheels 24 can be driven.

One end of the rotating shaft 30 protrudes from the transmission case 19, an electromagnetic clutch 38 is fixed to the outer end of the rotating shaft 30, and a cylindrical shaft-shaped cup surrounds the outer end of the rotating shaft 30. The ring shaft 39 is rotatably supported by the transmission case 19, and the rotation of the rotary shaft 30 and the coupling shaft 39 is integrally rotated by the operation of the electromagnetic clutch 38, so that the power of the PTO system can be branched and taken out.

A gear 40 is fixed to the coupling shaft 39. The gear 40 meshes with an idler gear 41 loosely fitted on the intermediate shaft 31, and the idler gear 41 further engages with a gear 42 on the first PTO shaft 21. The gears mesh with each other to enable transmission of PTO power. A bevel pinion 43 is fixed to the first PTO shaft 21, meshes with a bevel gear 44 on the second PTO shaft 22, divides the PTO power into two systems, and takes out the power from the first PTO shaft 21 and the second PTO shaft 22. The rotation power of the first and second PTO shafts 21 and 22 can be stopped without stopping the rotation power of the wheel transmission shaft 20 by demagnetizing the electromagnetic clutch 38.

A rotation pulse sensor 45 is attached to the outer end of the rotation shaft 30 from the electromagnetic clutch 38. As the rotation pulse sensor 45, for example, one having a structure in which the proximity sensor counts the unevenness of the sprocket externally fixed to the rotation shaft 30 can be used. At the rear of the traveling vehicle 12, a transplanting operation unit 50 is provided. This transplant working unit 50
A seedling supply device 51 and a soil block seedling supplied from the seedling supply device 51 are ridged by a planting tube (planting means) 61.
4 and a multi-film perforating device 81 that preliminarily perforates a multi-film M at a position where a seedling is to be planted. The seedling supply device 51 is driven by the rotational power of the second PTO shaft 22, and the planting device 6
The zero and multi-punching device 81 is driven by the rotational power of the first PTO shaft 21.

The seedling supply device 51 is mounted on the main frame 15, and transfers the seedling tray 46 in which a large number of pot portions 46a, in which soil block seedlings are raised, are arranged vertically and horizontally, in the horizontal and vertical directions. After taking out the soil block seedlings one by one from the seedling tray 46 with the seedling removal claw 52 at a predetermined seedling removal position with respect to the planting device 60, and transferring the soil block seedlings above the planting device 60, Planting cylinder 6
It is designed to be dropped into one. The seedling tray 46 is made of resin and has flexibility, and is provided with a large number of pots 46a vertically and horizontally protruding from the rear surface, and soil block seedlings are raised in each pot 46a.

A transmission shaft 54 connected to the second PTO shaft 22 is connected to the power receiving shaft 53 of the seedling supply device 51 via a universal joint, and the above-described operation is repeated by the power from the transmission shaft 54. It is. As shown in FIGS. 5 and 6, the planting device 60 and the multi-film punching device 81 are provided with the first PT of the transmission case 19.
An apparatus frame 62 supported on the O-shaft 21 so as to be vertically swingable.
Provided above. The device frame 62 is mainly composed of left and right frames 62L, 62R having a square pipe shape, and a connecting frame 62A connecting the left and right frames 62L, 62R. A bracket 64 is detachably attached to a front end of the right frame 62R by a fixing tool such as a bolt 63, and a first bearing 65 provided on a front end of the bracket 64 and a front end of the left frame 62L.
The PTO shaft 21 is inserted and supported. By removing the bracket 64 and the device frame 62 from the traveling vehicle 12, the planting device 60 and the multi-perforation device 8 are removed.
1 can be integrally removed from the traveling vehicle 12.

The rear end of the device frame 62 is suspended from the main frame 15 so that the position in the vertical direction can be adjusted. A soil cover / pressure reduction roller 66 is provided at the rear of the device frame 62. The planting device 60 includes a planting tube 61 that is pierced and moved with respect to the ridge 14 to plant the soil block seedling supplied from the seedling supply device 51 at a predetermined interval.
And a swing link mechanism 67 that supports the planting cylinder 61 so as to be vertically swingable. Swing link mechanism 6
7 includes a first parallel link 68 whose upper end is pivotally supported by the apparatus frame 62 so that the lower end can freely swing back and forth.
A swing plate 69 is pivotally connected to the lower end of the first parallel link 68, a front end of the second parallel link 70 is pivotally connected to the swing plate 69, and a plant is mounted at a rear end of the second parallel link 70. The attachment cylinder 61 is pivotally connected.

As shown in FIG. 2, a bearing 72 is fixed to the upper link 70a of the second parallel link 70.
A crank shaft (drive shaft) 71 rotatably supported via left and right bearings 73 is provided between the left and right frames 62L, 62R of the device frame 62.
A crank pin 71b between one crank arm 71a is inserted into the bearing 72.

A sprocket 74 is provided at the left end of the crankshaft 72, and a transmission chain 76 is wound around the sprocket 74 and a sprocket 75 provided at the left end of the first PTO shaft 21. The rotation power is transmitted to the crankshaft 71. The sprockets 74 and 75 and the transmission chain 76 are covered with a chain case 77, and the chain case 77 has a tension roller 7 for adjusting the tension of the chain 76.
8 are provided.

Therefore, the power from the first PTO shaft 21 rotates the crankshaft 71 in the direction shown by the arrow A in FIG. 1 so that the first and second parallel links 68 and 70 move the planting cylinder 61 up and down. It is configured to swing back and forth while swinging, so that when the planting tube 61 is pierced into the ridge 14 while traveling, the planting tube 61 does not substantially move forward with respect to the field. .

The planting cylinder 61 is provided with an openable / closable opener at a lower portion. When the opener enters the ridge 14 at the lower end side of the locus of the planting tube 71, the opener is opened and closed by the interlocking tool 79, A transplant hole is formed in the ridge 14, and a soil block seedling can be planted in the transplant hole. A scraper 80 is provided on the rear side of the planting tube 61, and when the planting tube 61 is moved up by the swing link mechanism 67 after the planting tube 61 enters the ridge 14, the outside of the planting tube 61. The soil attached to the wall and the inner wall is scraped off.

The multi-film perforating apparatus 81 is shown in FIG.
As shown in FIG. 6 to FIG. 6, a piercing means 82 constituted by a gas burner is provided, and the piercing means 82 is connected to the apparatus frame 62 via a parallel link 83 so as to be vertically movable.
A cam roller 84 is attached to the upper link 83a of the parallel link 83.
(Cam engaging portion) is pivotally mounted. This cam roller 84
Is a disc-shaped cam 85 provided on the crankshaft 71.
The outer circumference of the roller is rolled, and the planting device 60 and the multi-perforation device 81 are driven by the same crankshaft 71, thereby simplifying the device and reducing the cost. Further, the cam roller 84 is urged by the own weight of the punching means 82 in a direction of pressing the cam roller 84 against the outer periphery of the cam 85.

A concave portion 86 is formed in a part of the cam 85 in the circumferential direction, and when the cam roller 84 falls into the concave portion 86, as shown in FIG.
Moves downward, and the heating element 87 provided at the lower end of the perforation means 82 is moved downward.
Is pressed against the multi-film M so that a transplant hole is made in the multi-film M. The cam 85 is formed so as to raise the piercing means 82 immediately after piercing the multi-film M, and the other parts except the recessed portion 86 hold the piercing means 82 at the standby position of the ascending limit. In order to make the distance from the axis of the drive shaft 71 substantially constant, the outer periphery is formed in a substantially constant shape.

The cam 85 of this embodiment includes a first cam 88 for holding the perforating means 82 at a standby position (see FIG. 3), and moving the perforating means 82 from the standby position so that the perforating means 82 perforates a multi-film in a field. And a second cam 89 which is lowered and raised again to the standby position. That is, the second cam 89
The first cam 88 has a substantially constant outer peripheral shape, and the outer peripheral cam portion of the first cam 88 and the outer peripheral cam portion of the second cam 89 combine to form the cam 85. Is configured.

The thickness of the second cam 89 is made larger than the thickness of the first cam 88, so that the second cam 89 having the recess 86 is reduced in abrasion while the second cam 89 has a reduced thickness. 8
The first cam 88, which does not require a member strength of about nine, is made of a thin plate to reduce the weight of the apparatus and reduce the member cost.
The first cam 88 is fixed to the crankshaft 71, and the second cam 89 is connected to the first cam 88 so as to be able to adjust the relative angle around the crankshaft 71 axis. In this embodiment, bolt holes (not shown) are provided in the first cam 88 at two locations in the circumferential direction, and an arc-shaped long hole 90 communicating with the bolt holes is formed in the first cam 88. The first cam 8 is provided on the second cam 89 by inserting a bolt 91 into the bolt hole and the elongated hole 90 and fastening a nut (not shown).
8 and the second cam 89 can be fastened and fixed. When the bolt 91 is loosened slightly, the first
The relative angle between the cam 88 and the second cam 89 can be adjusted.

A nut 92 is provided near the drive shaft 71 on the side surface of the second cam 89, and an angle adjusting bolt 93 is screwed to the nut 92. A loosening prevention coil spring 94 is interposed between the nut 92 and the bolt head of the bolt 93. On the side of the first cam 88,
An engaging portion 95 with which the tip end of the bolt 93 contacts is provided. By slightly loosening the fastening force between the first cam 88 and the second cam 89, the bolt 93 is screwed toward the engaging portion 95. Fine adjustment of the relative angle between the first cam 88 and the second cam 89 can be easily performed.

The engaging portion 95 of the first cam 88 is disengaged from the engaging portion 95 even when the tip of the bolt 93 is slightly displaced from the first cam 88 by screwing the bolt 93. It is formed in a long shape in a direction orthogonal to the axis of the bolt 93 so as not to be present. Further, the device frame 62 includes:
An upper limit detection proximity switch 101 for detecting that the transplanting cylinder 61 is at the top dead center of the trajectory is provided. The switch 101 is mounted on a left bearing 73 that supports the crankshaft 71. When the crank arm 71a reaches the upper limit position, the switch 101 is turned on, and the electromagnetic clutch 38 is turned on (connected) off (disconnected). To the transplanting operation unit 5 without stopping the traveling of the traveling vehicle 12.
By temporarily stopping the drive of 0, the planting interval of the soil block seedlings is controlled. Then, when the rotation pulse sensor 45 detects a preset number of pulses, the electromagnetic clutch 38 is switched from off to on, and the operation of the transplanting work unit 50 is restarted.

When the electromagnetic clutch 38 is demagnetized and the drive by the crankshaft 71 is stopped, regardless of the magnitude of the inertia of the planting tube 61 or the like, the planting tube 61 is mounted on the device frame 62.
Braking device 10 to stop braking at a certain position in the middle of the trajectory
2 are provided. As shown in FIGS. 1 to 4, the braking device 102 mainly includes a brake arm (braking body) 96 and a brake roller (moving body) 99.

The brake arm 96 is formed of a longitudinally disposed long plate material and has a boss 96a at the front end. The boss 96a is attached to a support shaft 103 fixed to the right frame 62R of the apparatus frame 62. The front portion of the brake arm 96 is rotatably supported around a left-right axis. A U-shaped bracket 104 is disposed on the rear upper side of the brake arm 96 and is fixed to the right frame 62R of the device frame 62. The upper wall 104a of the bracket 104 passes through the upper wall 104a. The hanging bolt 105
A lock nut 106 is disposed above and below the upper wall 104a and screwed to a hanging bolt 105 to be fixedly mounted. A cushioning member 98 made of an elastic material or the like is attached and fixed to the lower surface of the lower wall 104b of the bracket 104.

The engaging bolt 105 and the brake arm 9
A tension coil spring 97 is interposed between the rear end 6 and the rear end side. The urging force of the coil spring 97 urges the brake arm 96 to rotate upward about the axis of the support shaft 103. In addition, the rotation is regulated by the contact of the brake arm 96 with the buffer member 98.

The urging force of the coil spring 97 can be adjusted by loosening the lock nut 106 and adjusting the vertical position of the engaging bolt 105. The brake roller 99 is formed of rubber or the like, and is located above the brake arm 96 so that the first
The cam 88 is rotatably mounted and supported around a left and right axis via a pivot 107 so as to rotate together with the crankshaft 71 in the direction A.

At an intermediate portion in the front-rear direction on the upper surface side of the brake arm 96, there is formed an engagement recess 100 which is recessed from above and engages the brake roller 99 from above.
The bottom of the concave portion 100 coincides with the outer peripheral end locus B of the rotational locus of the brake roller 99.
9 is projected radially inward from the outer peripheral end locus B of the
The front side of the rotation direction A of the brake roller 99 is a rotation restricting portion 100a for surely stopping the rotation of the crankshaft 71 when the electromagnetic clutch 38 is disengaged. Electromagnetic clutch 3
The reverse rotation preventing portion 100b prevents the reverse rotation of the brake roller 99 when the gear 8 is turned off.

In the above configuration, the brake roller 99 is rotating together with the crankshaft 71 in the direction A. When the planting cylinder 61 rises and comes to a position just before the stop position after planting the seedlings, the brake roller 99 is turned on. The brake arm 96 is located in front of the reverse rotation preventing portion 100b. When the implanting cylinder 61 comes to the stop position and the electromagnetic clutch 38 is demagnetized and the power to the transplanting operation unit 50 is cut off, the cam 85 slightly rotates due to the inertia of each operation unit of the transplanting operation unit 50. Then, the brake roller 99 presses the reverse rotation preventing portion 100b, and the spring 9
When the brake arm 96 is pressed down against the urging force of No. 7 and the brake roller 99 is fitted in the engagement recess 100 (see FIG. 1), the movement of the transplantation cylinder 61 stops.

In this state, the brake roller 99 has no force to overcome the rotation restricting portion 100a and the reverse rotation preventing portion 100b against the urging force of the spring 97.
It does not rotate in the direction A and the opposite direction. Thereby, the transplantation cylinder 61 can be always stopped at a fixed position in the middle of the trajectory, and the operation stability is improved. According to the embodiment, since the second cam 89 in which the concave portion 86 with high wear is formed is formed separately from the first cam 88 fixed to the crankshaft 71, the second cam with high wear is formed. The thickness of the first cam 88 is increased while the strength of the member is secured by increasing the plate thickness of the first cam 88.
By using a thin plate, the weight and cost of the device can be reduced.

The planting device 60 and the multi-perforation device 81
Is driven by the same crankshaft 71 to simplify the apparatus, while allowing the second cam 89 having the recess 86 to be freely adjustable in relative angle to the first cam 88 fixed to the crankshaft 71. Because of the connection, the fine adjustment of the operation timing of the vertical movement of the planting cylinder 61 and the vertical movement of the perforating means 82 can be easily performed.

Further, while stabilizing the operation by braking the planting cylinder 61 at a fixed position, by performing such braking by the cam 85, the number of components can be reduced and the apparatus can be simplified. . FIG. 9 shows another embodiment,
The brake roller 99 is pivotally supported by a rotating arm 108 fixed to the crankshaft 71, and the other configuration is the same as that of the above-described embodiment.

In the above embodiment, the reverse rotation preventing unit 1
00b may be shaped as shown by a virtual line C in FIG. Further, in the above embodiment, the present invention is applied to the walking type transplanter.
It can also be applied to a riding type transplanter. Further, the present invention can be applied to a multi-row transplanter.

[0042]

According to the present invention, there is provided a planting body 61 which moves up and down by the rotation of the drive shaft 71, supplies seedlings on the ascending side, and implants seedlings in the field on the descending side. A clutch 38 for connecting / disconnecting power transmission is provided between the power source 17 and the plant 38. The clutch 38 is temporarily disconnected to stop the plant 61 when the plant 61 comes to a predetermined stop position on the ascending side. In the power transmission device of the transplanter, a moving body 99 that rotates together with the drive shaft 71 is provided, and at a predetermined stop position of the planted body 61, the lifting operation of the planted body 61 is braked. Is provided with a braking body 96 with which the moving body 99 comes into contact. The braking body 96 is located on the rear side in the rotation direction A of the moving body 99 when the planted body 61 is stopped. The moving body 9 protruding inward
9 is provided with a reverse rotation preventing portion 100b for preventing reverse rotation of
When the clutch 38 is disengaged and the power transmission from the drive source 17 to the drive shaft 71 is cut off when the planted body 61 comes to the predetermined stop position, the moving body 99 that rotates together with the drive shaft 71 is rotated. It comes into contact with the braking body 96 to brake the elevating operation of the planted body 61, whereby the planted body 61 stops immediately,
The implant 61 stops accurately at a predetermined stop position.

The reverse rotation preventing unit 10 provided on the braking body 96
0b prevents the rotation of the moving body 99. The reverse rotation preventing portion 100b is provided on the rear side of the braking body 96 in the rotation direction A of the moving body 99 in the stopped state of the planted body 61, at the outer peripheral end of the rotation path of the moving body 99. It is configured by projecting radially inward from the trajectory B, and can be provided with a simple configuration and at low cost as compared with providing a one-way clutch for preventing reverse rotation.

A cam 85 for rotating and driving the driving shaft 71 in conjunction with the rotation of the driving shaft 71 and for moving the punching means 82 for forming a hole for planting seedlings in the multi-film M in the field by the rotation. Is provided on the cam 85,
By providing, the parts can be shared, the device can be made compact, the number of parts can be reduced, and the weight can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a braking device according to an embodiment of the present invention.

FIG. 2 is a plan view of a main part.

FIG. 3 is a side view showing a main part of the multi-film punching device.

FIG. 4 is a side view of the multi-film punching device, showing a state in which the punching means is moved downward.

FIG. 5 is an overall schematic side view of a multi-film punching device and a planting device.

FIG. 6 is a plan view of the same.

FIG. 7 is an overall side view of the transplanter.

FIG. 8 is a system diagram showing a power transmission system of a traveling system and a PTO system.

FIG. 9 is a side view showing another embodiment.

[Explanation of symbols]

 17 Engine (drive source) 38 Electromagnetic clutch 61 Planting cylinder (planting body) 71 Crankshaft (drive shaft) 96 Brake arm (braking body) 99 Brake roller (moving body) 100b Reverse rotation prevention unit A Rotation direction

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01C 11/00-11/02 303 A01C 11/02 370-387

Claims (2)

(57) [Claims] A planting body (61) for raising and lowering by rotation of a drive shaft (71), supplying seedlings on an ascending side, and planting seedlings in a field on a descending side; Clutch (3) for connecting and disconnecting power transmission with the power source (17).
8) is provided, and when the implant (61) reaches a predetermined stop position on the ascending side, the clutch (38) is temporarily disconnected to stop the implant (61). In the transmission, a moving body (9) that rotates together with the drive shaft (71).
9), and a braking body (96) with which a moving body (99) comes into contact at a predetermined stop position of the implanted body (61) so as to brake the elevating operation of the implanted body (61); The braking body (96) is located on the rear side in the rotation direction (A) of the moving body (99) in the stopped state of the planted body (61) and radially inward from the outer peripheral end track (B) of the rotating track of the moving body (99). A power transmission device for a transplanter, characterized in that a reverse rotation preventing portion (100b) for preventing reverse rotation of the moving body (99) is provided. 2. A piercing means (82) for rotating and driving in conjunction with the rotation of a drive shaft (71), and by the rotation of the piercing means (82) for forming a hole for seedling planting in a multi-film (M) in a field. A cam (85) for operation is provided.
2. The power transmission of an implanting machine according to claim 1, wherein a moving body is provided in 5).