JPH0965773A - Mulching film perforator in transplanter, and timing regulator for transmission mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure easy and quick operation, with light force, of fine tuning of the operational timing of a drive for a planting device, seedling feeder, etc. SOLUTION: In a transmission mechanism to transmit the rotary power of a prime moving section to a drive, the 1st transmission member on the prime moving section side and the 2nd transmission member on the drive side are mutually superposed in the direction of the revolving shaft center and made fixable so as to revolve integrally, and there is provided at least cane pair of holes 92, 93 capable of regulating the relative mounting angle around the shaft center for the 1st and 2nd transmission members through threading the above superposed part with a tip-closed tuning implement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-film perforating device for an implanter.

[0002]

2. Description of the Related Art For example, in a transplanter disclosed in Japanese Patent Application Laid-Open No. 5-6, a multi-film punching device is provided on the front side of a planting device. In such a conventional multi-film punching device, one cam plate is attached to the drive shaft driven by the engine, and a concave portion is formed on the outer periphery of the cam plate,
A pin that comes into contact with the outer periphery of the cam plate is projectingly provided on a support arm that supports the upper portion of the punching means composed of a multi-cutter, and the pin is dropped into the recessed portion of the cam, so that the punching means is opened through the support arm. The mulch film is moved downward on the ridge, and a graft hole is formed in the mulch film by a piercing means.

[0003]

In the above-mentioned conventional multi-film punching device, the cam plate is formed of an integral body, but the wear portion of the cam plate is mainly a concave portion, and the member strength of the concave portion is secured. If the cam plate is made thicker in order to do so, the strength of the members in the other parts becomes excessive, resulting in an increase in the weight and cost of the device.

Further, the device is simplified by driving the planting device and the multi-film perforating device by the same drive shaft. However, the vertical movement of the planting cylinder and the vertical movement of the perforating means are performed. I could not fine-tune the operation timing of
It is difficult to properly pierce the implantation tube into the mulch film implantation hole provided by the piercing means.

Therefore, according to the present invention, firstly, by forming the cam plate by a separate member for a portion that is heavily worn and a portion that is less worn, the weight of the device can be reduced while ensuring the required member strength. The purpose is to reduce costs. Another object of the present invention is to make it possible to easily and quickly perform fine adjustment of operation timing in a transmission mechanism to a drive unit such as a planting device or a multi-film punching device.

[0006]

SUMMARY OF THE INVENTION Technical means taken by the present invention to solve the above-mentioned problems include a drive shaft provided on a device frame mounted on a traveling vehicle, and a cam provided on the drive shaft. In a multi-film punching device in a transplanter equipped with a punching means that is moved up and down, the cam comprises a first cam that holds the punching means in a standby position, and the first cam, which is formed separately from the first cam. It is characterized in that it is constituted by combining with a second cam for lowering the perforating means from the standby position to perforate the multi-film in the field and raising it again to the standby position. Since the second cam is formed separately from the first cam fixed to the drive shaft, the member strength of the second cam, which is heavily worn, is increased, and the member strength of the first cam is required of the cam. Moderate With wood strength, is prevented from using excessive member to the cam, weight of the apparatus, cost reduction can be achieved.

Further, according to the present invention, the first cam is fixed to the drive shaft, and the first cam and the second cam are superposed in the axial direction of the drive shaft. By inserting a tapered work tool into the overlapping portion of the
Adjusting the mounting angle of the second cam with respect to the first cam, wherein at least a pair of adjusting holes capable of adjusting the relative mounting angle of the cam and the second cam around the drive shaft axis are provided. Thus, while the drive shaft is shared with the planting device, the device can be simplified and fine adjustment of the operation timing of the vertical movement of the planting cylinder and the vertical movement of the boring means can be performed. Here, the adjustment work of the relative angle between the first cam and the second cam is performed by inserting the adjustment tool into the adjustment holes provided in the first cam and the second cam, which are displaced from each other in the circumferential direction. As a result, due to the tapered shape of the adjusting tool, the amount of displacement in the circumferential direction between the pair of adjusting holes is reduced according to the amount of insertion, so fine adjustment of the relative mounting angle between the first cam and the second cam is required. It can be easily done with light force.

Further, according to the present invention, at least two pairs of adjusting holes are provided and are formed in a round hole shape, and one adjusting hole of the first cam and one adjusting hole of the second cam corresponding thereto are provided. Is characterized in that when they are superposed on each other, the adjustment holes of the other pair are displaced in the circumferential direction, leaving a portion communicating with a part thereof. Since the pair of adjusting holes are offset from each other in the circumferential direction, the first cam and the second cam are relatively mounted by inserting the adjusting tool into the communicating hole part of the circumferentially offset adjusting holes. When the angle is adjusted and the mounting angle is adjusted in the opposite direction, the adjustment tool is inserted through an adjustment hole different from the adjustment hole through which the adjustment tool is inserted, so that the first cam and the second cam Fine adjustment of the relative mounting angle can be performed easily and quickly in either direction.

Further, in the timing adjusting device for the transmission mechanism of the present invention, in the transmission mechanism for transmitting the rotational power of the driving portion to the drive portion, the first transmission member on the driving portion side and the second transmission member on the driving portion side are provided. , Is capable of being fixed so as to be overlapped with each other in the direction of the axis of rotation and integrally rotated, and inserting a tapered adjustment work tool into the overlapped portion of the first transmission member and the second transmission member. Is provided with at least one pair of adjusting holes capable of adjusting the relative mounting angles of the first transmission member and the second transmission member about the axes, and the second transmission member is attached to the first transmission member. By adjusting the angle, the operation timing of the drive unit can be finely adjusted. Here, the adjustment work of the relative angle between the first transmission member and the second transmission member is performed by adjusting the adjustment holes provided in the first transmission member and the second transmission member, which are displaced from each other in the circumferential direction. As a result of the insertion of the adjusting tool, the amount of displacement of the pair of adjusting holes in the circumferential direction decreases in accordance with the amount of insertion due to the tapered shape of the adjusting tool. Therefore, the relative distance between the first transmission member and the second transmission member is small. Fine adjustment of the mounting angle can be easily done with a light force.

Further, at least two pairs of adjusting holes are provided and are formed in a round hole shape, and one adjusting hole of the first transmission member and one adjusting hole of the second transmitting member corresponding thereto are overlapped with each other. When the adjustment holes of another pair are overlapped with each other, the adjustment holes of the other pair are shifted in the circumferential direction while leaving a part communicating with each other. Since the adjusting holes of the first and second adjusting members are displaced from each other in the circumferential direction, the first transmitting member and the second transmitting member are relatively attached by inserting the adjusting tool into a communicating hole portion of a part of the adjusting holes displaced in the circumferential direction. When the angle is adjusted and the mounting angle is adjusted in the opposite direction, the first transmission member and the second transmission member are inserted by inserting the adjustment tool into an adjustment hole different from the adjustment hole into which the adjustment tool was previously inserted. Easy and quick fine adjustment of mounting angle relative to It can be carried out.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The vegetable transplanter 11 shown in FIG.
It is a walking type having a steering handle 13 at the rear of the traveling vehicle 12, straddling the ridges 14 and traveling in the longitudinal direction thereof.
Ridge 14 with soil block seedlings covered with mulch film M
It is to be planted at a predetermined interval.

The traveling vehicle 12 includes a main frame 15, a pedestal 16 provided at the front end of the main frame 15, and the like. The main frame 15 is formed of a square pipe or the like, and a front portion thereof is bent downward and is fixed to a side portion of the pedestal 16, and a rear portion thereof is bent upward and serves as a mounting portion of the control handle 13. An engine 17 is mounted on the frame 16, the engine 17 is covered with a hood 18, a mission case 19 is fixed to the rear of the frame 16, and the power of the engine 17 is transmitted to the mission case 19. .

Power from the inside of the transmission case 19 is supplied to a wheel transmission shaft 20 projecting to the left and right sides and to the wheel transmission shaft 2.
The first PT provided rearward from the left side and protruding left and right.
An O-shaft 21 and a second PTO shaft 22 projecting rearward and upward are taken out by three systems. The left and right ends of the wheel transmission shaft 20 support left and right drive wheels 24 (rear wheels) via a transmission case 23 that swings up and down about the axis, and the transmission case 23 is supported.
The drive wheels 24 can be driven by the winding transmission body 25 inside. This drive wheel 24 rolls in the groove between the ridges 14. In addition, a pair of left and right front wheels 26 and a ridge height detection roller 27 are provided at the front of the traveling vehicle 12.

FIG. 7 exemplifies a power transmission system in the transmission case 19, and the power of the engine 17 is transmitted from the winding transmission means 28 to the input shaft 29. Mission case 1
9, a rotary shaft 30, an intermediate shaft 31,
The back shaft 32, the wheel transmission shaft 20, and the first PTO shaft 21 are rotatably supported, and the second PTO shaft 22 in the front-rear direction is provided so as to project 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 is engaged, so that the input gear is engaged. Power can be transmitted from the shaft 29 to the rotating shaft 30. The clutch gear 34 is elastically pressed in the direction in which it engages with the free rotation gear 33, and constitutes a pawl-type main clutch.

Between the rotating shaft 30 and the intermediate shaft 31,
A transmission 35 is provided which can be switched between first speed (F ₁ ), second speed (F ₂ ), third speed (F ₃ ), neutral position (N), and reverse (R). A transmission gear 36 and a parking brake (not shown) are provided on the intermediate shaft 31, and the transmission gear 36 meshes with a large gear 37 fixedly mounted on the wheel transmission shaft 20.

One end of the rotary shaft 30 projects from the mission case 19, an electromagnetic clutch 38 is fixed to the outer end thereof, and a cylindrical cup-shaped cup surrounds the outer end of the rotary shaft 30. A ring shaft 39 is rotatably supported by the transmission case 19, and the electromagnetic clutch 38 operates so that the rotary shaft 30 and the coupling shaft 39 rotate integrally, so that the transplantation system power 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 to the intermediate shaft 31, and the idler gear 41 is further combined with a gear 42 on the first PTO shaft 21. It meshes with each other and enables the power of the transplant system to be transmitted. A bevel pinion 43 is fixed to the first PTO shaft 21 and meshes with a bevel gear 44 on the second PTO shaft 22. The transplantation system power is branched into two systems and is extracted from the first PTO shaft 21 and the second PTO shaft 22. It is possible to do so by demagnetizing the electromagnetic clutch 38 without stopping the rotational power of the wheel transmission shaft 20.
The rotation power of the TO shafts 21 and 22 can be stopped.

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, a structure in which the proximity sensor counts the unevenness of the sprocket externally fitted and fixed to the rotation shaft 30 can be used. A transplant work unit 50 is provided at the rear of the traveling vehicle 12. The transplant work unit 50 is
Seedling supply device 51, planting device 60 for planting the soil block seedlings supplied from the seedling supply device 51 in the ridges 14 by the planting cylinder 61, and forming a transplant hole in the mulch film M in advance at the position where the seedling is planted. Multi-film punching device 8
1 and so on. The seedling supply device 51 is the second PTO shaft 22.
Is driven by the rotational power of the first PTO shaft 21, and the planting device 60 and the multi-punching device 81 are driven by the rotational power of the first PTO shaft 21. That is, the engine 17 is a driving part, and the seedling supply device 51, the planting device 60, and the multi-punching device 81, which are driving parts, are driven by the rotational power of the driving part 17.

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 where the soil block seedlings are raised are arranged in a row and a row 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 1. The seedling tray 46 is made of resin and has flexibility, and is provided with a plurality of pot portions 46a arranged vertically and horizontally so as to project to the back surface, and soil block seedlings are raised in each pot portion 46a.

A power 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 power transmission shaft 54. Be done. That is, the power transmission shaft 54 constitutes a part of a power transmission mechanism that transmits the rotational power of the engine 17 serving as a driving unit to the seedling supply device 51 (driving unit). A timing adjusting device 4 for finely adjusting the operation timing of the seedling feeding device 51 with respect to the planting device 60 and the multi-piercing device 81 is provided in the middle of the transmission shaft 54. The device 4 will be described later.

As shown in FIGS. 4 and 5, the planting device 60 and the multi-film punching device 81 are provided on a device frame 62 which is vertically swingably supported by the first PTO shaft 21 of the mission case 19. Has been. The device frame 62 includes square pipe-shaped left and right frames 62L, 62L.
R and a connecting frame 62A connecting the left and right frames 62L and 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.
The first PTO shaft 21 is inserted and supported by the bearings 65 provided at the front end of the No. 4 and the front end of the left frame 62L. By removing the bracket 64, the device frame 62 is removed from the traveling vehicle 12, and Device 60
Also, the multi-punching device 81 can be integrally removed from the traveling vehicle 12.

Further, the rear portion of the device frame 62 is crushed.
A soil cover roller 66 is provided, and the rear end of the device frame 62 is suspended from the main frame 15 so that the device frame 62 can be swung vertically following the height of the ridges 14. The planting device 60 is a planting cylinder 61 that is stabbed into the ridges 14 so as to plant soil block seedlings supplied from the seedling supply device 51 in the ridges 14 at predetermined intervals;
It is mainly configured by a swing link mechanism 67 that supports the planting cylinder 61 so as to swing up and down. Swing link mechanism 67
Has a first parallel link 68 whose upper end is pivotally supported by the device frame 62 so that the lower end can swing back and forth, and a swing plate 69 is pivotally connected to the lower end of the first parallel link 68. The front end of the second parallel link 70 is pivotally connected to the swing plate 69, and the planting cylinder 61 is pivotally connected to the rear end of the second parallel link 70. Further, as shown in FIG. 9, the upper end link 70 a of the second parallel link 70 is pivotally connected to the tip end of a crank arm 72 provided on a left-right drive shaft 71 provided on the device frame 62 via a bearing 59. are doing.

The drive shaft 71 is rotatably supported by left and right bearings 73 fixed to the device frame 62. A sprocket 74 is provided at the left end of the drive shaft 72. This sprocket 74 and the first PTO shaft 21
The transmission chain 7 is attached to the sprocket 75 provided at the left end of the
6 is wound, and the rotational power of the engine 17 is applied to the drive shaft 71.
To be transmitted to. These sprockets 7
4, 75 and the transmission chain 76 are covered with a chain case 77, and the chain case 77 is provided with an adjusting roller 78 for adjusting the tension of the chain 76. Thus, these first PTO shaft 21 and sprocket 7
5, the transmission chain 76, the sprocket 74, the drive shaft 72, and the like constitute a transmission mechanism that transmits the rotational power of the engine 17 to the planting device 60 and the multi-drilling device 81 that serve as the drive unit. 8 and FIG. 9,
It has a timing adjusting device 3 for finely adjusting the operation timing of the planting device 60 and the multi-punching device 81. The device 3 will be described later.

Therefore, when the crank arm 72 is rotated by the power from the first PTO shaft 21 via the drive shaft 71, the planting cylinder 61 swings up and down by the first and second parallel links 68, 70. It also swings back and forth so that the planting tube 61 does not move substantially forward with respect to the field when the planting tube 61 is thrust into the ridge 14 while traveling.

Further, the planting cylinder 61 is provided with an opener that can be opened and closed at the lower part, and the opener opens forward and backward by the interlocking device 79 when it enters the ridge 14 at the lower end side of the locus of the planting cylinder 71, A transplant hole is formed in the ridge 14, and a soil block seedling can be planted in the transplant hole. Further, a scraper 80 is provided on the rear side of the planting cylinder 61, and outside of the planting cylinder 61 when the planting cylinder 61 is moved up by the swinging link mechanism 67 after being thrust into the ridges 14. The soil that adheres to the walls and inner walls is scraped off.

The multi-film punching device 81 is shown in FIG.
As shown in FIG. 5, a gas burner type perforation means 82 is provided, and the perforation means 82 is vertically movably connected to the device frame 62 via a parallel link 83. It should be noted that the perforating means 82 is connected to the gas pipe connecting portion 10 for connecting the gas supply pipe.
2 is provided so as to project forward. A cam roller 84 (cam engaging portion) is pivotally attached to the upper link 83a of the parallel link 83. The cam roller 84 serves as the drive shaft 7.
It is adapted to roll around the outer periphery of a disk-shaped flat cam 85 provided in No. 1, and a planting device 60 and a multi-punching device 81.
By driving and with the same drive shaft 71, the device is simplified and the cost is reduced. Further, the self-weight of the perforating means 82 urges the cam roller 84 in the direction of pressing it 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. When the cam roller 84 falls into the concave portion 86, the perforating means 82 is lowered by its own weight as shown by a two-dot chain line in FIG. By moving and pressing the heating body 87 provided at the lower end portion of the perforating means 82 against the multi-film M, a transplant hole is perforated in the multi-film M.
Further, the cam 85 is formed so as to raise the punching means 82 immediately after punching the multi-film M, and the other portions except the concave portion 86 hold the punching means 82 at the standby position at the rising limit. In order to do so, it is formed in an outer peripheral shape in which the distance from the axis of the drive shaft 71 is substantially constant.

The cam 85 of this embodiment is provided with a punching means 82.
Cam 8 for holding the vehicle in the standby position (shown by the solid line in FIG. 3)
8 (first transmission member 1) and a second cam 89 for lowering the perforation means 82 from the standby position and raising it again to the standby position in order to perforate the mulch film in the field by the perforation means 82.
(Second transmission member 2). That is, the concave portion 86 is formed in the second cam 89, the cam portion of 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 are formed. The combination forms the cam 85.

The plate thickness of the second cam 89 is larger than the plate thickness of the first cam 88, so that the second cam 89 having the recessed portion 86 can be reduced in wear and the second cam 89 can be reduced. 8
The first cam 88, which is not required to have a member strength as high as 9, is a thin plate to reduce the weight of the device and reduce the member cost.
The first cam 88 is fixed to the drive shaft 71.
A second cam 89 is connected to the cam 88 so that the relative angle can be adjusted around the axis of the drive shaft 71. Although various configurations can be adopted as such a configuration, in the present embodiment, the first cam 88 is used.
Bolt holes (not shown) are provided at two locations in the circumferential direction, arcuate elongated holes 90 communicating with the bolt holes are provided in the second cam 89, and bolts 91 are inserted into the bolt holes and the elongated holes 90. By fastening a nut (not shown), the first cam 88
And the second cam 89 can be fastened and fixed,
By slightly loosening the bolt 91, the relative angle between the first cam 88 and the second cam 89 can be adjusted within the range of the long hole 90.

Further, the first cam 88 and the second cam 89 are
It has a portion that overlaps in the axial direction of the drive shaft 71. Then, as shown in FIG. 2, a conical rod-shaped adjusting work tool 94 having a tapered end is inserted into the overlapping portion of the first cam 88 and the overlapping portion of the second cam 89, whereby the first cam 88 and the second cam 88 Circular hole-shaped adjustment holes 92 and 93 are provided, each of which is capable of adjusting a relative mounting angle with respect to the cam 89 about the axis of the drive shaft 71. It is sufficient that at least one pair of adjustment holes 92 and 93 are provided, but two or three or more pairs of adjustment holes may be provided.
When one adjusting hole 92 of the cam 88 and one corresponding adjusting hole 93 of the second cam 89 overlap with each other, the other pair of adjusting holes 92, 93 are left in the circumferential direction with a part communicating with each other. It is preferable to configure so as to deviate.

In the present embodiment, three adjusting holes 92 of the first cam 88 are provided. Of these, the first adjusting hole 92a and the third adjusting hole 92c are arranged adjacent to each other in the circumferential direction, and the second adjusting hole 92b is located on the axis of the drive shaft 71 with respect to the third adjusting hole 92c. It is arranged at the approximate point target position. Further, two adjusting holes 93 of the second cam 89 are provided,
Of these, the first adjusting hole 93a is arranged near the first and third adjusting holes 92a and 92c of the first cam 88, and the second adjusting hole 93b is near the second adjusting hole 93b of the first cam 88. It is arranged. That is, the first adjustment hole 92 of the first cam 88.
a or the third adjusting hole 92c and the first adjusting hole 93a of the second cam 89 make a pair, and the second adjusting hole 92b of the first cam 88 and the second adjusting hole 93b of the second cam 89 make a pair. Has been made.

Then, as shown in FIG. 1B, when the second adjusting hole 92b of the first cam 88 and the second adjusting hole 93b of the second cam 89 are overlapped with each other, the first adjusting of the second cam 89 is performed. Hole 9
3a is located midway between the first adjusting hole 92a and the third adjusting hole 92c of the first cam 88, and the first adjusting hole 93 of the second cam is provided.
a is the first adjusting hole 92a and the third adjusting hole 92 of the first cam.
It is designed to communicate with a part of c.

In this state, as shown in FIG. 2, the tip end portion of the adjusting tool 94 is inserted into the communication hole portion between the third adjusting hole 92c of the first cam 88 and the first adjusting hole 92a of the second cam 89. ,
When the adjusting tool 94 is pushed in, the second cam 89 is rotationally adjusted about the axis of the drive shaft 71 with respect to the first cam 88 so that the communicating hole portion is expanded by the taper of the adjusting tool 94. As shown in FIG. 1A, the third adjusting hole 92c of the first cam 88 and the first adjusting hole 93a of the second cam 89 overlap.

Similarly, in the state shown in FIG. 1B, the tip end portion of the adjusting member 94 is provided at the communication hole portion between the first adjusting hole 92a of the first cam 88 and the first adjusting hole 93a of the second cam 89. When the second cam 89 is inserted and pushed in, the second cam 89 is rotationally adjusted in the opposite direction to the case described above, and as shown in FIG.
No. 8 first adjusting hole 92a and the second cam 89 second adjusting hole 93
and a are polymerized.

In order to change the state shown in FIG. 1 (a) or 1 (c) to the state shown in FIG. 1 (b), the first cam 88 is used.
Second adjusting hole 92b and second adjusting hole 93b of the second cam 89.
It suffices to insert the tip portion of the adjuster 94 into the communication hole portion with and push it in. By the above adjustment work, the relative mounting angle of the second cam 89 with respect to the first cam 88 can be adjusted within the range of the angle θ from the state shown in FIG. 1 (a) to the state shown in FIG. 1 (c). , The work can be easily performed by pushing the rod-shaped adjusting tool 94 in the axial direction, and
Since the first cam 88 and the second cam 89 are expanded in the circumferential direction by the gradual taper of the tip end portion of the adjusting tool 94, the fastening force of the bolt 91 is slightly weakened, and the first cam is made to some extent by the bolt 91. Even when the rotation of 88 and the second cam 89 is blocked, the attachment angle of the first cam 88 and the second cam 89 can be finely adjusted with a light force.

The device frame 62 is provided with an upper limit detection proximity switch 101 for detecting that the transplantation cylinder 61 is at the top dead center of the locus. The switch 101 is mounted on a bearing 73 on the left side that supports the drive shaft 71, and when the crank arm 72 reaches the upper limit position, the switch 101 is turned on and the electromagnetic clutch 38 is turned off (disconnected) from on (connected). The planting interval of the soil block seedlings is controlled by switching to the above and temporarily stopping the driving of the transplanting work unit 50 without stopping the traveling of the traveling vehicle 12. 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 transplant working part 50 is restarted.

Further, in the apparatus frame 62, when the electromagnetic clutch 38 is demagnetized and the driving of the drive shaft 71 is stopped, the planting cylinder 61 or the like has a constant midway path regardless of the magnitude of inertia. A stopper 96 (brake arm) with which the first cam 88 can be engaged so as to brake at a position is provided near the cam 85 so as to be vertically swingable around the horizontal axis. The stopper 96 is biased by a coil spring 97 so as to swing upward, and by contacting a regulating body 98 fixed to the apparatus frame 62, the upward swing is regulated at a predetermined position. An engaging recess 100 is provided at an upper portion of the stopper 96 to which the brake roller 99 provided near the peripheral edge of the side surface of the first cam 88 is fitted.

Therefore, when the electromagnetic clutch 38 is demagnetized, the cam 85 slightly rotates due to the inertia of each operating part of the transplanting work part 50, and the brake roller 99 of the first cam 88 resists the urging force of the spring 97 and becomes a stopper. 96 is pushed down so that the roller 99 is engaged with the engaging recess 100 of the stopper 96.
(See FIG. 3), the movement of the transplantation cylinder 61 is stopped, so that the transplantation cylinder 61 is always kept at a certain position in the middle of the trajectory.
Can be stopped and the stability of operation is improved.

According to the multi-punching device 81 described above, the second cam 89 in which the recess 86, which is heavily worn, is formed is formed separately from the first cam 88 fixed to the drive shaft 71. It is possible to reduce the weight and cost of the device by making the first cam 88 a thin plate while increasing the plate thickness of the second cam 89 which is heavily worn to secure the member strength. Further, while the planting device 60 and the multi-punching device 81 are driven by the same drive shaft 71, the device is simplified and the second cam 89 having the recessed portion 86 is fixed to the drive shaft 71. Since the first cam 88 is connected to the first cam 88 so that the relative angle can be adjusted, fine adjustment of the operation timing of the vertical movement of the planting cylinder 61 and the vertical movement of the perforation means 82 can be easily performed.

Further, while the planting cylinder 61 is braked at a fixed position to stabilize the operation, the cam 85 performs such braking, so that the number of constituent members can be reduced and the apparatus can be simplified. . Next, the timing adjusting device 3 for the transmission mechanism to the planting device 60 and the multi-punching device 81 will be described with reference to FIGS.

In the device 3, the rotation angle of the drive shaft 71 is adjusted by adjusting the mounting angle of the sprocket 74 provided at the left end portion of the drive shaft 71, and the planting device 6 is adjusted.
0 and the operation timing of the multi-punching device 81 can be changed at one place. The sprocket 74 constitutes the first transmission member 1 on the side of the driving portion 17, and the sprocket 74 (first transmission member 1) has a disk shape having a boss portion 5 which is externally fitted and fixed to the left end portion of the drive shaft 71. Is attached to the second transmission member 2 such that the relative angle can be adjusted around the axis of the drive shaft 71.

This mounting structure is the same as the mounting structure of the first cam 88 and the second cam 89 in the cam 85 described above. Hereinafter, the same structure will be denoted by the same reference numeral, and the second structure will be described. Bolt holes 6 are provided in the transmission member 2 at three positions in the circumferential direction, arcuate elongated holes 90 communicating with the bolt holes 6 are provided in the first transmission member 1, and bolts 91 are inserted into the bolt holes 6 and the elongated holes 90. Then, by fastening a nut (not shown), the first transmission member 1 and the second transmission member 2 can be fastened and fixed, and if the bolt 91 is slightly loosened, it is within the range of the long hole 90. The relative angle between the first transmission member 1 and the second transmission member 2 can be adjusted.

The first transmission member 1 and the second transmission member 2 are overlapped with each other in the axial direction of the drive shaft 71, and the overlapped portion of the first transmission member 1 and the overlapped portion of the second transmission member 2 are overlapped with each other. In this case, a conical rod-shaped adjusting work tool 94 is inserted to insert a conical rod-shaped adjusting work tool 94 into a round hole shape capable of adjusting a relative mounting angle of the first transmission member 1 and the second transmission member 2 around the drive shaft 71 axis. Adjustment hole 9
2, 93 are provided respectively. The adjustment hole 9
At least one pair of 2, 93 should be provided, but 2
A pair or three or more pairs may be provided, and when one adjusting hole 92 of the first transmission member 1 and one corresponding adjusting hole 93 of the second transmitting member 2 overlap with each other, another adjusting hole 92 of the other pair, It is preferable that the parts 93 are arranged so as to be displaced in the circumferential direction, leaving a part communicating with each other.

In this embodiment, three adjusting holes 92 of the second transmission member 2 are provided. Of these, the first adjustment hole 92a
And the third adjustment hole 92c are arranged adjacent to each other in the circumferential direction, and the second adjustment hole 92b is arranged at a position about 90 ° away from the third adjustment hole 92c around the drive shaft 71. ing. Further, two adjusting holes 93 of the first transmission member 1 are provided, and the first adjusting hole 93a among them is arranged in the vicinity of the first and third adjusting holes 92a, 92c of the second transmitting member 2, The second adjustment hole 93b is arranged near the second adjustment hole 93b of the second transmission member 2. That is, the second transmission member 2
The first adjusting hole 92a or the third adjusting hole 92c and the first adjusting hole 93a of the first transmission member 1 make a pair, and the second adjusting hole 92b of the second transmitting member 2 and the first transmitting member 1 The second adjustment hole 93b is paired.

Then, the second adjusting hole 92 of the second transmission member 2 is formed.
When b and the second adjusting hole 93b of the first transmission member 1 are overlapped with each other, the first adjusting hole 93a of the first transmitting member 1 becomes the first adjusting hole 92a and the third adjusting hole 92c of the second transmitting member 2. The first adjusting hole 93a of the first transmission member 1 is
A part of the transmission member 2 communicates with the first adjustment hole 92a and the third adjustment hole 92c.

In this state, the tip of the adjusting tool 94 is inserted into the communication hole portion between the third adjusting hole 92c of the second transmitting member 2 and the first adjusting hole 92a of the first transmitting member 1, and the adjusting tool 94 is inserted. When the first transmission member 1 is pushed in, the first transmission member 1 is rotationally adjusted about the drive shaft 71 axis with respect to the second transmission member 2 so that the communication hole portion is expanded by the taper of the adjusting tool 94, and the second transmission is performed. The third adjusting hole 92c of the member 2 and the first adjusting hole 93a of the first transmission member 1 overlap with each other.

Similarly, the first adjusting hole 92 of the second transmission member 2
When the distal end portion of the adjuster 94 is inserted and pushed into the communication hole portion between a and the first adjustment hole 93a of the first transmission member 1, the first transmission member 1 is rotationally adjusted in the opposite direction to that in the previous case. The first adjustment hole 92a of the second transmission member 2 and the second adjustment hole 93a of the first transmission member 1 are overlapped with each other. By the above adjustment work, the relative mounting angle of the second transmission member 2 with respect to the first transmission member 1 can be adjusted within the range of the elongated hole 90,
The operation can be easily performed by pushing the rod-shaped adjusting tool 94 in the axial direction, and the gradual taper of the tip of the adjusting tool 94 causes the first transmitting member 1 and the second transmitting member 2 to move around. Since the bolt 91 spreads out in the direction, even if the fastening force of the bolt 91 is slightly weakened to prevent the rotation of the first transmission member 1 and the second transmission member 2 by the bolt 91 to some extent, the first force of the first transmission member 1 and the second transmission member 2 is lightened. The attachment angle between the transmission member 1 and the second transmission member 2 can be finely adjusted.

The timing adjusting device 4 for the transmission mechanism to the seedling supplying device 51 will be described with reference to FIG. The transmission shaft 54 has a first shaft 54A and a second shaft 54B, and the first shaft 54A and the second shaft 54B are connected to each other via the adjusting device 4. The timing adjusting device 4 includes a disc-shaped first transmission member 1 provided on the first shaft 54A and a disc-shaped second transmission member 2 provided on the second shaft 54B,
The first transmission member 1 and the second transmission member 2 form the transmission shaft 5
4 is attached and fixed so that the relative angle can be adjusted around the axis of 4. Since the mounting structure of the first transmission member 1 and the second transmission member 2 has substantially the same configuration as the device 3, the same reference numerals are given and detailed description thereof will be omitted.

As described above, in the transplanter 11 of the present embodiment, the timing adjusting device 3 for finely adjusting the operation timing of the planting device 60 and the multi-piercing device 81 and the operation dimming of the seedling supplying device 51 are finely adjusted. Since the timing adjusting device 4 for adjusting and the timing adjusting device configured by the first and second cams 88, 89 and the like for finely adjusting the operation timing of the multi-drilling device 81 are provided, the transplanting work according to the work situation. The operation of each part of the part 50 can be arbitrarily and easily adjusted, and the stability and convenience of the transplantation work can be improved.

The present invention is not limited to the above-mentioned embodiment, but the design can be changed appropriately. For example,
The adjustment holes 92 and 93 are not limited to round holes, but may be square holes, or one or both of the pair of adjustment holes 92 and 93 may be elongated holes extending in the circumferential direction. is there. Further, the cam 85 can be a linear cam, a three-dimensional cam, or the like.

A cutter may be used as the punching means 82, and the cam 8 may be used in place of the cam roller 84.
It is also possible to use an engagement pin that engages with 5. Further, in the above embodiment, the present invention is applied to the walking type transplanter, but it can also be applied to the riding type transplanter. Further, it can be applied to a transplanter for multi-row planting. In addition to the above-mentioned embodiment, the seedling supplying device may be a rotary table type, a conveyor type, a rod extruding type, or the like.

[0053]

According to the multi-film perforating apparatus of the present invention, since the second cam in which the concave portion, which is heavily worn, is formed is formed separately from the first cam fixed to the drive shaft, the abrasion is reduced. By increasing the member strength of the second cam, which is extremely high, and the member strength of the first cam to an appropriate member strength required for the cam, it is possible to prevent excessive members from being used for the cam and reduce the weight of the apparatus. Therefore, the cost can be reduced.

Further, by adjusting the mounting angle of the second cam with respect to the first cam, it is possible to finely adjust the operation timing of the vertical movement of the planting cylinder and the vertical movement of the perforating means.
The adjustment work of the relative angle between the cam and the second cam is performed by inserting the adjusting tool into the adjusting holes provided in the first cam and the second cam, which are deviated from each other in the circumferential direction. Due to the tapered shape of the tool, the amount of displacement of the pair of adjustment holes in the circumferential direction is reduced according to the amount of insertion, so fine adjustment of the relative mounting angle between the first cam and the second cam is facilitated with a light force. It can be carried out.

Further, in the case where at least two pairs of adjusting holes are provided, when any one pair of adjusting holes overlaps with each other, the adjusting holes of the other pair are displaced from each other in the circumferential direction, so that they are displaced in the circumferential direction. By inserting the adjusting tool into the communicating hole part of the adjusting hole, the relative mounting angle of the first cam and the second cam is adjusted, and when the mounting angle is adjusted in the opposite direction, By inserting the adjusting tool into an adjusting hole different from the adjusting hole into which the adjusting tool has been inserted, fine adjustment of the relative mounting angle of the first cam and the second cam can be easily and quickly performed in any direction. it can.

Further, according to the timing adjusting device of the transmission mechanism of the present invention, the operation timing of the drive unit can be finely adjusted by adjusting the mounting angle of the second transmission member with respect to the first transmission member. The adjustment work of the relative angle between the first transmission member and the second transmission member can be performed by adjusting holes provided in the first transmission member and the second transmission member, which are deviated from each other in the circumferential direction. As a result of the insertion of the adjusting tool, the amount of displacement of the pair of adjusting holes in the circumferential direction decreases in accordance with the amount of insertion due to the tapered shape of the adjusting tool. Therefore, the relative distance between the first transmission member and the second transmission member is small. Fine adjustment of the mounting angle can be easily performed with a light force.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of a multi-film punching device, showing stepwise a state of adjusting a mounting angle of a first cam and a second cam.

FIG. 2 is a simplified enlarged view of a cross section taken along the line AA of FIG.

FIG. 3 is a schematic side view of the multi-film punching device.

FIG. 4 is an overall schematic side view showing a multi-film punching device and a planting device mounted on a device frame.

FIG. 5 is a plan view of the same.

FIG. 6 is an overall side view of the transplanter.

FIG. 7 is a system diagram of power transmission.

FIG. 8 is a side view showing a timing adjusting device for a transmission mechanism to the planting device.

FIG. 9 is a plan sectional view of the device.

FIG. 10 is a view showing a sprocket serving as a first transmission member of the same device.

FIG. 11 is a view showing a second transmission member of the same device.

FIG. 12 is a perspective view showing a timing adjusting device of a transmission mechanism to a seedling supplying device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st transmission member 2 2nd transmission member 3 Timing adjustment device of the transmission mechanism to the planting apparatus 4 Timing adjustment device of the transmission mechanism to the seedling feeder 11 Transplanter 12 Traveling vehicle 51 Drive part (seedling feeder) 60 Drive Part (planting device) 62 Device frame 71 Drive shaft 82 Drilling means 85 Cam 88 First cam 89 Second cam 92 Adjustment hole provided in the first cam or the first transmission member 93 Provided in the second cam or the second transmission member Adjusting hole 94 Adjusting work tool

Claims (5)

[Claims] 1. A driving shaft (71) is provided on a device frame (62) mounted on a traveling vehicle (12), and a perforation means (upper and lower) is vertically moved by a cam (85) provided on the driving shaft (71). 82), the cam (85) is different from the first cam (88) for holding the perforating means (82) in the standby position and the first cam (88). In combination with a second cam (89) that is formed on the body and that lowers the punching means (82) from the standby position and raises it again to the standby position to punch the multi-film (M) in the field by the punching means (82). A multi-film punching device for a transplanter, which is configured by the above. 2. The first cam (88) is fixed to the drive shaft (71), and the first cam (88) and the second cam (89) are overlapped in the axial direction of the drive shaft (71). In the overlapping portion of the first cam (88) and the second cam (89),
First by inserting the tapered working tool (94)
Adjustment holes (92, 9) capable of adjusting the relative mounting angles of the cam (88) and the second cam (89) around the drive shaft (71) axis.
3. The multi-film perforating apparatus for an implanting machine according to claim 1, wherein at least one pair of 3) are provided. 3. The adjusting holes (92, 93) are provided in at least two pairs and are formed in a round hole shape, and one adjusting hole (92) of the first cam (88) and a corresponding second adjusting hole (92). When one adjusting hole (93) of the cam (89) is overlapped with the other adjusting hole (92, 93), the other adjusting holes (92, 93) are displaced in the circumferential direction, leaving a part communicating with each other. The multi-film punching device in the transplanter according to claim 2. 4. The rotational power of the drive part (17) is applied to the drive part (5).
1, 60), the first transmission member (1) on the side of the drive part (17) and the drive part (5).
The first transmission member (1) and the second transmission member are fixed to the second transmission member (2) on the (1, 60) side so as to overlap with each other in the direction of the rotation axis and integrally rotate. By inserting an adjustment work tool (94) having a tapered shape into the overlapping portion of (2), the relative mounting angle of the first transmission member (1) and the second transmission member (2) about the axial center is set. Adjustable adjustment hole (92,
93) at least one pair is provided, and a timing adjusting device for a transmission mechanism. 5. The adjusting holes (92, 93) are provided in at least two pairs and are formed in a round hole shape, and one adjusting hole (92) of the first transmission member (1) and the corresponding adjusting hole (92). 2 When one adjusting hole (93) of the transmission member (2) overlaps with the other adjusting hole (92, 93), the other pair of adjusting holes (92, 93) are displaced in the circumferential direction, leaving a part communicating with each other. The timing adjusting device for a transmission mechanism according to claim 4, wherein.