JPH0444019Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a seedling stand that can be moved laterally in a reciprocating manner on which pine-shaped seedlings are placed; It is equipped with a planting arm to which an attached claw is attached, a take-out port for guiding the planted seedlings cut out by the planting claws from the left and right, and a planting arm that is equipped with a planting arm to which the planting claws are attached, and a retrieval port for guiding the planted seedlings cut out by the planting claws from the left and right. The present invention relates to a seedling harvesting amount adjustment structure of a planting device configured to change the number of times the attached arm operates.

[Conventional technology]

Conventionally, as a structure for adjusting the amount of seedlings taken as described above, for example, as shown in Japanese Utility Model Application Publication No. 58-152828, both ends of a spiral shaft having an endless spiral groove are placed on a seedling stand. The seedling stand is reciprocated by connecting and fixing the top member to the helical groove and rotating it in a fixed position, and the relative ratio of the number of rotations of the top member to the number of operations of the planting arm. In other words, in the cited reference, there is a device configured to adjust the amount of seedlings taken by changing the gear ratio.

[Problem that the invention attempts to solve]

However, in the above cited example, the amount of seedlings removed is adjusted by simply changing the relative speed between the planting arm and the lateral feed speed of the seedling stand; in other words, the width between the take-out opening and the planting claw is constant. Even if the amount of seedlings removed is adjusted, the amount of seedlings cut out by the planting claws may not be uniform, so there is room for improvement. In addition, in the cited reference, even if the amount of seedlings taken is adjusted, the feed rate of the seedling stand remains constant, so it is set when pine-shaped seedlings W are cut out a predetermined number of times as shown in Figure 6A. For example, if the feed rate of the seedling tray 3 is adjusted to increase the amount of seedlings taken, the sixth
As shown in Figure B, the planting claw 6a is inconveniently deviated from the center _C2 in the width direction with respect to the seedling W' that is cut out during the first and final operation of the planting arm.

In other words, since the width of the cut seedling W' increases, the widthwise center _C2 of the cut out seedling deviates from the preset seedling width center _C1 toward the center of the pine-shaped seedling W.

The purpose of this invention is to make a rational modification so that even when adjusting the amount of seedlings removed, the amount of seedlings cut from the pine-like seedlings is as uniform as possible over the entire width, and the amount of seedlings removed is also adjusted. Even in such cases, a structure for adjusting the amount of seedlings to be removed is configured, which allows the seedlings to be cut out from both ends of a pine-like seedling by aligning the widthwise center of the seedling with the widthwise center of the planting claw.

[Means for solving problems]

A feature of the present invention is that the planting device having the above-mentioned configuration is equipped with a feeding mechanism for a plurality of seedling stands configured so that the entire width of the pine-shaped seedlings in the lateral direction is cut out by a different number of operations of the planting arms, respectively. When each feeding mechanism feeds the full width of the pine-shaped seedling in the lateral direction, the removal width obtained by dividing the lateral width of the pine-shaped seedling by the number of operations of the planting arm, the width of the planting claw, and the above-mentioned removal. Plant nails so that the width of the mouth almost matches the width of the mouth,
The width of the take-out port is configured to be adjustable, and the feed amount of each feed mechanism is calculated using the formula: feed amount = removal width x
It is configured to be expressed as {number of operations - 1}, and its functions and effects are as follows.

[Effect]

If the above characteristics are configured as shown in FIGS. 1 and 2, for example, when the amount of seedlings taken is adjusted by operating the shift gear 12, the shift gear 12
The sensors 23, 23 detect that the opening has been operated, and based on this detection, the opening adjustment mechanism A of the extraction port E and the claw width adjustment mechanism B adjust the widths of the extraction port E and the planting claw 6a to desired widths, respectively. Set to .

As shown in FIG. 3 A and B and FIG. 4 A and B, the feed amount S ₁ ,
By setting S ₂ to the value determined by the above formula, it is possible to position the centers C ₁ and C ₂ of the planting claws 6a in the width direction of the seedlings located at both ends of the pine-shaped seedling W. It becomes possible.

Although the illustrated embodiment has an automatic adjustment structure, the same effect can be obtained in the present invention even if the extraction port and planting claw are manually adjusted.

[Effect of idea]

Therefore, by configuring the width of the take-out port and the planting claw to be adjustable, and by changing the feed rate of the seedling stand along with the adjustment of the amount of seedlings removed, even when the amount of seedlings removed is adjusted, the pine-shaped The amount of seedlings to be cut from the seedlings is uniform, and the amount of seedlings that can be cut from both ends of the pine-shaped seedlings by aligning the horizontal center of the seedling with the horizontal center of the planting claw. A regulatory structure was constructed.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 5, there is a transmission case 2 to which power is transmitted from a traveling machine (not shown) via a transmission shaft 1, a seedling stand 3 on which pine-shaped seedlings W are placed, and a bottom of the seedling stand 3. A sliding rail 4 that supports the edge movably in the lateral direction, and a plurality of planting arms 6 to which the power from the transmission case 2 is transmitted via a plurality of planting cases 5 extending rearward. . . . and a plurality of soil leveling floats 7 . . . constitute a seedling planting device.

The seedling planting device is connected to the rear end of the traveling machine so as to be able to rise and fall freely, and the planting claw 6a provided on the planting arm 6 operates in a loop-like trajectory, so that the pine-like seedlings W are planted from the lower edge of the seedling. It operates to cut out seedlings and to plant the thus cut out seedlings on the mud surface.

In addition, the cutting of seedlings from the pine-like seedlings W is performed in the third step.
As shown in Figures A and B, the pine-shaped seedlings W are continuously cut out in the horizontal direction along the lower edge, and the seedlings thus cut out are transported to the mud surface F through the outlet E formed in the sliding rail 4. Furthermore, the seedling planting device is configured so that the amount of seedlings taken can be adjusted by changing the number of times the planting arm 6 is operated to cut out the full width L in the lateral direction of the pine-shaped seedlings W.

That is, as shown in FIGS. 1 and 2, the transmission case 2 is provided with a transverse feed shaft 8 that passes through the transmission case 2 in the transverse direction for moving the seedling table 3 in the transverse direction.
Furthermore, inside the transmission case 2, two spiral shafts with endless spiral grooves are provided as an example of a mechanism for feeding the seedling stand 3, and as shown in FIG. The spiral grooves 9a and 10a formed in the spiral shafts 9 and 10 are formed with different lead angles.

Further, the spiral groove 9 is formed in the member 11 provided on the transverse feed shaft 8.
Piece members 9b and 10b that engage a and 10a, respectively
Further, a gear 9 is provided on each of the screw shafts 9 and 10.
c and 10c are attached, and a shift gear 12 that can engage these gears 9c and 10c is loosely fitted to the transverse feed shaft 8.

As shown in the figure, a drive shaft 14 to which power from the transmission shaft 1 is transmitted via a bevel gear mechanism 13.
is installed inside the transmission case 2, the gear 15 provided on the drive shaft 14 and the shift gear 12 are arranged in an interlocking state, and the sprocket 16 provided on the drive shaft 14 and the planting case 5... Sprocket 1 provided on the second drive shaft 17 that transmits power to...
By winding the chain 19 over 8,
The planting arm 6 and the seedling stand 3 are configured to be horizontally moved in synchronization.

Further, the shift gear 12 is linked to an operating lever 22 provided on the outside of the transmission case 2 via a shift operating rod 20 and a shift fork 21, and is operated by operating the operating lever 22 in two positions. As a result, the amount of seedlings harvested can be adjusted.

Further, sensors 23, 23 are provided to detect the operating position of the operating lever 22, and the outlet E
. . . A movable member 24 . . . for adjusting the opening of the outlet E . The planting nail 6a...
There is a claw width adjustment mechanism B that sets the cutting width of the seedling.
...is provided.

The opening adjustment mechanism A consists of a transmission motor 25, a rack and pinion gear mechanism 26, a rod 27, and a link 28 that connects the rod 27 with the movable member 24, and the pawl width adjustment mechanism B... teeth,
Each of them consists of an electric motor 29, a gear mechanism 30, and a screw mechanism 31 that sets the width of the planting claw 6a, and these opening adjustment mechanism A, claw width adjustment mechanism B... are operated by a signal from a control device 32, Further, this control device 32 is configured to perform control using input signals from the sensors 23, 23.

Then, when the operation lever 22 is operated and set, the full width L in the lateral direction of the pine-shaped seedling W is cut out by the set number of cuttings, and the full width L is cut out by the number of times N of operation of the planting arm 6 at the time of cutting. The widths of the extraction opening E and the planting claws 6a are automatically set to the divided value, that is, the value equal to the removal width T.

Moreover, as shown in FIG. 4 A and B, the spiral groove 9
a and 10a are formed by varying the feed amount of the seedling stand 3 required from the first cutting operation of the planting arm 6 to the final cutting operation,
Its value is calculated by the formula: feed amount S = removal amount T x {number of operations N
−1}.

In other words, even when the amount of seedlings taken is adjusted, as shown in FIG. It is set so that the center is located.

Furthermore, as shown in the same figure and Figure 4 A and B, when the feed amount is changed from a small value T ₁ to a large value T ₂ , the feed amount is changed from a large value S ₁ to a small value S ₂ . There is.

Moreover, the moving ends X of each of the spiral grooves 9a and 10a...
When the frame members 9b and 10b reach , the vertical feeding structure is configured to send the pine-shaped seedling W placed on the seedling stand 3 downward.

In other words, contact pieces 33, 33 are provided on the lateral feed shaft 8 at both sides of the member 11, and the helical grooves 9a, 33 of the two helical shafts 9, 10, respectively.
Rotating pieces 9d, 9d, 10d, 10 are provided on the outside of 10a.
A vertical feed shaft 35 and a horizontal feed shaft 8 are interlocked and connected via a one-way rotation clutch 36 and a link 37. The structure is such that the pine-shaped seedlings W are sent downward by the swinging of the transverse feed shaft 8 that occurs each time the seedling platform 3 reaches the moving end.

[Another example]

In addition to the embodiments described above, the present invention may be implemented by providing a large number of feeding mechanisms, or may be implemented by manually adjusting the widths of the extraction opening and the planting claw.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling removal amount adjustment structure of the planting device according to the present invention, FIG. 1 is a sectional view of the transmission case, FIG. 2 is a schematic diagram showing the configuration of the control system of the adjustment structure, and FIG. Figures A and B are plan views showing the seedling width, claw width, etc. when adjusting the amount of seedlings taken, Figures 4 A and B are diagrams schematically showing the screw shaft, respectively, and Figure 5 is a side view of the seedling planting device. FIGS. 6A and 6B are diagrams showing the state when the amount of seedlings taken is adjusted using the conventional structure. 3... Seedling stand, 6... Planting arm, 6a...
Planting claw, 9, 10, 11...Feeding mechanism, E...Ejecting port, L...Horizontal width, N...Number of operations, S...
...feed amount, T...cutting width, W...pine-shaped seedling.

Claims (1)

[Scope of Claim for Utility Model Registration] A seedling stand 3 that is capable of reciprocating horizontal movement on which pine-shaped seedlings W are placed, and a planting claw 6a that cuts out planting seedlings from the pine seedlings W and plants them on the mud surface are attached. A planting arm 6, which is provided with take-out ports E for guiding the planted seedlings cut out by the planting nails 6a from the left and right, and is required to cut out the entire width of the pine-shaped seedlings W in the lateral direction. The seedling removal amount adjustment structure of the planting device is configured such that the number of operations of the planting arm 6 can be changed, and the number of operations of the planting arm 6 is different.
A plurality of feeding mechanisms 9 and 10 are provided for a plurality of seedling stands configured to cut out the full width of the pine-shaped seedling W in the lateral direction, and when each of these feeding mechanisms 9 and 10 feeds the full width of the pine-shaped seedling W in the lateral direction, planting arm 6
The planting claws 6a, so that the cutting width T obtained by dividing the lateral width L of the pine seedling W by the number of operations N, the width of the planting claws 6, and the width of the take-out opening E substantially match.
The width of the outlet E is configured to be adjustable, and
The seedling removal amount adjustment structure of the planting device is configured such that the feed amount S of each of the feeding mechanisms 9 and 10 is expressed by the following formula: S=cutting width T×{number of operations N−1}.