JPH0983A - Multi-film perforator in transplanter - Google Patents

Abstract

(57) [Abstract] [Purpose] To optimize the structure of the cam 85 for vertically moving the punching means 82 such as a gas burner. [Structure] A device frame 62 mounted on a traveling vehicle 12
And a cam 8 provided on the drive shaft 71.
5, the first cam 8 holds the punching means 82 at the standby position.
8 and a second cam 89 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.
The cam 88 is fixed to the drive shaft 71, and the second cam 89 is
The cam 88 is connected so that the relative angle can be adjusted around the axis of the drive shaft 71.

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.

Further, the inter-plant detection is performed by temporarily stopping the operation of the planting cylinder at a predetermined position by the inter-plant detection device. However, when the planting cylinder is temporarily stopped, inertia of the planting cylinder is caused by various factors. Since it is different, it is difficult to always stop the planting cylinder at a fixed position, and there is a problem that stable transplantation is not performed. Furthermore, there is also a request to solve the problem while simplifying the structure. is there.

Therefore, the present invention aims to solve the above problems.

[0007]

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 vertically moving punching means, the cam waits the first cam for holding the punching means in a standby position and the punching means for punching the multi-film in the field by the punching means. It is composed of a second cam that lowers from the position and raises it to the standby position again. The first cam is fixed to the drive shaft, and the second cam is adjustable relative to the first cam around the drive shaft axis. It is characterized by being connected to.

Further, according to the present invention, the drive shaft is interlocked with the vertical movement of the planting cylinder of the planting device mounted on the traveling vehicle, and the first cam causes the plant to move when the driving of the drive shaft is stopped. It is characterized in that it can be engaged with a stopper provided on the device frame to brake the attached cylinder at a fixed position. Further, according to the present invention, between the first cam and the second cam,
It is characterized in that an adjusting bolt which can adjust the relative angle between the first cam and the second cam by interposing the screw is interposed.

[0009]

[Operation] The second cam, in which the concave portion with severe wear is formed,
Since it is configured separately from the first cam fixed to the drive shaft,
By increasing the member strength of the second cam, which is subject to severe wear, and setting the member strength of the first cam to the appropriate member strength required for the cam, it is possible to prevent the use of excessive members for the cam and reduce the weight of the device. And cost reduction.

Further, by adjusting the mounting angle of the second cam with respect to the first cam, the drive shaft can be shared with the planting device to simplify the device, and at the same time, the vertical movement of the planting cylinder and perforation can be performed. Fine adjustment of the operation timing with the vertical movement of the means can be performed. Also,
By making the first cam engageable with the stopper,
Since the cam is also used as a braking member for the planting cylinder, the planting cylinder can be braked at a predetermined position while simplifying the structure, and the second cam is separate from the first cam. Therefore, it is possible to adjust the operation timing of the implanting cylinder and the punching means while using the cam as the braking member of the implanting cylinder.

For the adjustment work of the relative angle between the first cam and the second cam, a fine adjustment can be easily performed with high precision by screwing the adjustment bolt with an appropriate tool.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. A vegetable transplanter 11 shown in FIG. 5 is a walking type having a steering handle 13 at a rear portion of a traveling vehicle 12, and has a ridge 1
The soil block seedlings are planted in the ridges 14 covered with the mulch film M at predetermined intervals while traveling in the longitudinal direction across the four.

The traveling vehicle 12 includes a main frame 15, a frame 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. .

The power from the inside of the mission case 19 is generated by the wheel transmission shaft 20 protruding to the left and right sides and 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. 6 exemplifies the 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 meshing portion of the clutch gear 34 meshes with the idle gear 33. Power can be transmitted from the shaft 29 to the rotary 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 rotary 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 of the rotary shaft 30, 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 rotary shaft 30 with respect to 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.

The seedling feeding device 51 is mounted on the main frame 15 and transports the seedling tray 46 in which a large number of pot portions 46a in which soil block seedlings have been raised are arranged vertically and horizontally in the horizontal and vertical directions. After picking up the soil block seedlings one by one from the seedling tray 46 with the seedling take-out nails 52 at a predetermined seedling taking-out 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 supplying device 51 via a universal joint, and the above-described operation is repeated by the power from the power transmission shaft 54. Be done. As shown in FIGS. 3 and 4, the planting device 60 and the multi-film punching device 81 are the first PT of the mission case 19.
A device frame 62 supported by an O-axis 21 so as to be vertically swingable
Provided above. The device frame 62 is mainly composed of right and left frames 62L and 62R each having a square pipe shape, and a connecting frame 62A connecting the left and right frames 62L and 62R. A bracket 64 is detachably attached to the front end of the right frame 62R by a fixture such as a bolt 63, and a first bearing is provided on a bearing 65 provided at the front end of the bracket 64 and the front end of the left frame 62L.
The PTO shaft 21 is inserted and supported, and the device frame 62 is removed from the traveling vehicle 12 by removing the bracket 64.
1 can be integrally removed from the traveling vehicle 12.

It should be noted that 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 swing up and down by 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, a tip end portion of a crank arm 72 provided on a horizontal drive shaft 71 provided on the device frame 62 is pivotally connected to an upper link 70a of the second parallel link 70.

The drive shaft 72 is rotatably supported by left and right bearings 73 fixed to the apparatus 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.

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. 4, a gas burner type perforation means 82 is provided, and the perforation means 82 is vertically movably connected to the apparatus 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, as shown in FIG.
Is moved downward, and the heating body 87 provided at the lower end of the punching means 82 is moved.
Is pressed against the multi-film M, so that the multi-film M is provided with a transplant hole. 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 includes a first cam 88 for holding the perforating means 82 in the standby position (see FIG. 1) and the perforating means 82 from the standby position so that the perforating means 82 can perforate the mulch film in the field. It is composed of a second cam 89 which is lowered and raised again to the standby position. That is, the second cam 89
A concave portion 86 is formed in the cam portion, the cam portion of the first cam 88 has a substantially constant outer peripheral shape, and the cam 85 is formed by a combination of the outer peripheral cam portion of the first cam 88 and the outer peripheral cam portion of the second cam 89. Is configured.

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 structures can be adopted as this structure, in the present embodiment, bolt holes (not shown) are provided in the first cam 88 at two positions in the circumferential direction, and the arc-shaped long holes 90 communicating with the bolt holes are formed in the first cam 88. The second cam 89 is provided, and the bolt 91 is inserted into the bolt hole and the long hole 90 and a nut (not shown) is fastened to the first cam 88 and the second cam 89.
The cam 89 can be fastened and fixed, and when the bolt 91 is slightly loosened, the relative angle between the first cam 88 and the second cam 89 can be adjusted within the range of the elongated hole 90.

A nut 92 is provided on the side surface of the second cam 89 near the drive shaft 71, and an angle adjusting bolt 93 is screwed into 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 portion of the bolt 93 abuts 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. The 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 if the position of the tip of the bolt 93 relative to the first cam 88 is slightly displaced by screwing the bolt 93. In order not to exist, it is formed in a long shape in a direction orthogonal to the axis of the bolt 93. Further, the device frame 62 includes:
An upper limit detection proximity switch 101 that detects that the transplantation cylinder 61 is at the top dead center of the locus is provided. The switch 1
01 is mounted on the left bearing 73 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 switched from ON (connection) to OFF (disconnection), and the drive of the transplanting work unit 50 is temporarily stopped without stopping the traveling of the traveling vehicle 12 to control the planting interval of soil block seedlings. 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 trajectory midway portion 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. 1), the movement of the transplantation cylinder 61 is stopped, so that the transplantation cylinder 61 is always kept at a fixed position in the middle of the trajectory.
Can be stopped and the stability of operation is improved.

According to the above-described embodiment, since the second cam 89 in which the recessed portion 86 that is heavily worn is formed is formed separately from the first cam 88 that is fixed to the drive shaft 71, it is heavily worn. While increasing the plate thickness of the second cam 89 to secure the member strength, the first cam 88 is a thin plate to reduce the weight of the apparatus.
Cost can be reduced. In addition, the planting device 60 and the multi-punching device 81 are driven by the same drive shaft 71 to simplify the device, but the recessed portion 8 is formed.
Since the second cam 89 forming 6 is connected to the first cam 88 fixed to the drive shaft 71 so that the relative angle can be adjusted, the vertical movement of the planting cylinder 61 and the vertical movement of the perforation means 82 can be adjusted. Fine adjustment 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. . The present invention is not limited to the above embodiment, but can be modified in design as appropriate. For example, a cutter may be used as the punching means 82, and an engagement pin that engages with the cam 85 may be used instead of the cam roller 84. Further, the cam 85 can be a linear cam, a three-dimensional cam, or the like.

Although the above embodiment is applied to the walking type transplanter, it may be applied to the riding type transplanter. Further, it can be applied to a transplanter for multi-row planting. Also,
In addition to the seedling feeding device of the above embodiment, a rotary table type, a conveyor type, a rod extruding type, etc. can be adopted.

[0038]

According to the present invention, since the second cam in which the recessed portion which is heavily worn is formed is formed separately from the first cam which is fixed to the drive shaft, the second cam which is heavily worn. By increasing the member strength of the first cam and the member strength of the first cam to an appropriate member strength required for the cam, it is possible to prevent an excessive member from being used for the cam, and reduce the weight and cost of the device. be able to.

Further, by adjusting the mounting angle of the second cam with respect to the first cam, the drive shaft can be shared with the planting device to simplify the device, and the vertical movement and perforation of the planting cylinder can be achieved. It is possible to finely adjust the operation timing with the vertical movement of the device. Further, since the first cam can be engaged with the stopper so that the first cam is also used as the braking member of the planting cylinder, the planting cylinder is braked at a predetermined position while simplifying the structure. Further, since the second cam is separate from the first cam, it is possible to adjust the operation timing of the planting cylinder and the boring means while using the cam as a braking member for the planting cylinder.

Further, according to the present invention, the adjustment work of the relative angle between the first cam and the second cam can be easily performed with high precision by finely adjusting the adjustment bolt by screwing the adjustment bolt with an appropriate tool. You can

[Brief description of drawings]

FIG. 1 is a side view showing a main part of a multi-film punching device according to an embodiment of the present invention.

FIG. 2 is a side view of the multi-film punching device showing a state in which the punching means is moved downward.

FIG. 3 is an overall schematic side view of a multi-film punching device and a planting device.

FIG. 4 is a plan view of the same.

FIG. 5 is an overall side view of the transplanter.

FIG. 6 is a system diagram of power transmission.

[Explanation of symbols]

 11 Transplanter 12 Traveling Vehicle 60 Planting Device 61 Planting Tube 62 Device Frame 71 Drive Shaft 82 Drilling Means 85 Cam 88 First Cam 89 Second Cam 93 Adjusting Bolt 96 Stopper

Claims (3)

[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) In the multi-film perforating apparatus for transplantation machine, the cam (85) comprises a first cam (88) for holding the perforating means (82) at a standby position, and a multi-film in the field by the perforating means (82). (M) is a perforation means (8)
The second cam (89) lowers 2) from the standby position and raises it again to the standby position. The first cam (88) is fixed to the drive shaft (71), and the second cam (89).
Is connected to the first cam (88) so that the relative angle can be adjusted around the axis of the drive shaft (71). 2. The drive shaft (71) is interlocked with the vertical movement of the planting cylinder (61) of the planting device (60) mounted on the traveling vehicle (12), and the first cam (88) is , Drive shaft (7
The stopper (96) provided on the device frame (62) so as to brake the planting cylinder (61) at a fixed position when the drive of (1) is stopped is engageable. A multi-film perforating apparatus in the transplanting machine according to 1. 3. The relative angle between the first cam (88) and the second cam (89) can be adjusted by screwing between the first cam (88) and the second cam (89). Adjustment bolt (9
3) is interposed, The multi-film perforation apparatus in the transplanter of Claim 1 or Claim 2 characterized by the above-mentioned.