JP2007300846A - Chemical agent applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chemical agent applicator which can accurately and efficiently apply a desired amount of a chemical agent to a desired land surface simultaneously with a sowing work or the like, and can realize the saving of a space for storage in a state connected to a front machine. <P>SOLUTION: This chemical agent applicator comprises: an applicator D comprising a chemical agent-receiving portion 40, a rotary valve mechanism 42 for delivering the chemical agent from the chemical agent-receiving portion 40 in a variable amount, and an application portion 50 for applying the chemical agent in a variable application width; a horizontal support mechanism 1 whose one end supports the applicator D and whose other end has a parallel link mechanism 2 capable of being attached or detached to a tractor; a driving wheel 5 having a rotary output gear mechanism; and a vertically driving wheel-supporting mechanism 6 for attaching the driving wheel 5 to the horizontal support mechanism 1 in a vertical position-variable state. Further, the applicator has a flexible shaft 18 for transmitting a rotational output formed by the rotation of the grounding driving wheel 5 to the rotary input gear mechanism of the rotary valve mechanism 42 of the applicator D in response to the travel of the tractor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a chemical spreader suitable for performing control at the same time as ground work such as sowing by a machine in a field in field cropping.

In upland cropping, control work by spraying chemicals is performed after ground work such as tillage, culling, sowing, fertilization, and soil feeding. This control work is performed in a process separate from the sowing work, for example. An example of this type of mechanical device is disclosed in Japanese Patent Application Laid-Open No. 2001-186836 proposed by the present applicant. This is directly connected to the rice transplanter, and sufficient consideration is not given to spraying at the same time as the field sowing operation. Also, in this machine, drug metering is performed with a helical shaft, and the spiral feed amount changes depending only on the number of rotations, so that it is difficult to apply to various drugs and is not suitable for use in diverse field crops.
JP 2001-186836 A

In order to effectively and efficiently carry out control work simultaneously with seeding work, etc., it is possible to accurately spray the required amount of medicine to the required location, that is, the amount of medicine sprayed automatically according to the speed of seeding machine It is necessary to adjust and always be able to spray the right amount of drug at a uniform density over the width and length of the wrinkles. In addition, it can be easily attached to and removed from a front traction machine such as a seeding machine, and the spray height can be adjusted to match the cropping system of various crops, reducing the occupied space during storage standby while attached to the front traction machine. It is also desirable that this is possible.

In order to solve the above-described problems, a medicine spreader of the present invention includes a medicine storage section, a rotary valve mechanism having a rotation input gear mechanism for sending medicine from the medicine storage section in a variable amount of delivery, and the rotation valve mechanism. A sprayer comprising a spraying unit for spraying a medicine with variable spraying width; a horizontal support mechanism that supports the sprayer at one end and the other end is attachable to and detachable from the front traction machine; and a drive wheel having a rotation output gear mechanism The drive wheel is constituted by a drive wheel vertical support mechanism that is attached to the horizontal support mechanism so that the drooping position is variable, and the spreader is supported above the ground surface by the horizontal support mechanism via the drive wheel vertical support mechanism when the drive wheel is grounded In addition, a flexible shaft for transmitting the rotation output by the rolling of the ground drive wheel to the rotation input gear mechanism of the rotary valve mechanism of the spreader according to the progress of the traction machine is also provided. The feeding of the medicine was performed according to the progress of the spreader, and the spray amount could be adjusted by adjusting the volume of the rotary valve mechanism.

By changing the mounting position of the vertical support mechanism that supports the drive wheels to the horizontal support mechanism up and down, the height of the horizontal support mechanism relative to the ground contact position of the drive wheels is changed, and the lower end of the spreader supported by the horizontal support mechanism is changed. By changing the height of a certain spraying part to the ground and the action of the spraying part variable mechanism of the spraying part itself, it is possible to change the spreading width on the ground surface. The driving wheel rotates following the progress of the traction machine, and the rotational speed corresponding to the traveling speed is transmitted to the rotary valve mechanism of the spreader to adjust the amount of medicine delivered, so that uniform spraying with no spraying unevenness can be achieved. The vane wheel of the rotary valve mechanism can deliver an accurate amount of medicine, and the amount of medicine delivery can be accurately adjusted by changing the volume between adjacent vanes of the vane wheel. By folding the parallel link mechanism of the horizontal support mechanism, the drug spreader can be drawn obliquely upward to the storage standby position above the front machine, which is effective for storage and storage with the drug spreader connected. . By installing a plurality of this machine, it is possible to spread the medicine according to the sowing width even with a wide width.

In the medicine spreader of the present invention, the horizontal support mechanism is composed of a mounting bracket to the traction machine, a parallel link mechanism, and a horizontal support rod having a variable horizontal length, and the parallel link mechanisms are connected to each other so as to be rotatable. The link of one side is inclined and fixed to the mounting bracket for the front machine, the base end of the horizontal support rod is inclined and fixed to the link on the opposite side, and the links on both sides are bridged The length of one of the other opposing side links to be adjusted is configured to be adjustable. The drive wheel vertical support mechanism is composed of a vertical support rod attached to the horizontal support rod of the horizontal support mechanism so that its vertical position is variable, and a bifurcated support frame consisting of two hanging legs fixed to the lower end of the vertical support rod. The axle of the drive wheel is supported at the lower end of the drive wheel so that the drive wheel can rotate within the bifurcated support frame. The flexible shaft has an input gear at the proximal end and an output gear at the distal end, the input gear is always meshed with the output gear of the drive wheel, and the output gear is selectively connected to the rotary input gear of the rotary valve mechanism of the drug spreader. Can be engaged. The spreader supported by the horizontal support mechanism is supported on the ground surface by the drive wheels via the vertical support mechanism whose vertical position is variable with respect to the horizontal support mechanism. Is also stable. In the rotary valve mechanism, a vane wheel and a feed amount adjusting wheel having a slit that can be moved back and forth in the axial direction with respect to the vane wheel are provided, and the medicine feed amount is defined by the fitting length of the vane wheel with respect to the slit. It can comprise so that adjustment of a spreading amount can be made easy.

In the figure, A is a tractor which is a traction machine, B is a recumbent provided at the rear end of tractor A, C is a seeder connected to recumbent B, D is a spreader connected to recumbent B together with seeder C is there. Reference numeral 1 denotes a horizontal support mechanism for supporting and connecting the spreader D to the reed B. A mounting bracket 3 provided on both sides of the parallel link mechanism 2 composed of the links 2a, 2b, 2c and 2d and a variable length horizontal eaves. It consists of four. For example, the horizontal long rod 4 is connected to a plurality of hollow rods 4a and 4b slidably with respect to each other, and bolts 4d are inserted into corresponding holes 4c drilled at predetermined intervals in the length direction and fixed with nuts 4e. Thus, the length can be adjusted (FIG. 5). The spreader D is fixedly supported at the tip of the horizontal long rod 4. The horizontal support mechanism 1 can be attached to and detached from the recumbent B with a mounting bracket 3. The horizontal short rod 3a of the mounting bracket 3 is tilted and fixed to one side 2a of the parallel link mechanism 2, and the base end of the hollow rod 4a of the horizontal long rod 4 is tilted and fixed to the opposite side 2b. Both mounting inclination angles are substantially equal. Reference numeral 3b denotes an opening / closing piece of the mounting bracket 3, and 3c denotes a bolt / nut mechanism for engaging the mounting bracket 3 with the horizontal shaft B and closing and fixing the opening / closing piece 3b. The upper bridge side 2c of the parallel link mechanism 2 is formed of a turnbuckle, and the horizontal adjustment is performed by finely adjusting the shape of the parallelogram by fine adjustment of its length.

Reference numeral 5 denotes a drive wheel, and 6 is a vertical support mechanism, which includes a vertical rod 7 that is vertically movable with respect to the horizontal support mechanism 1 and a bifurcated support frame 8 provided at the lower end thereof. The drive wheel 5 is rotatably held between the lower ends of the both hanging support legs 8a and 8b (FIG. 6). 6a is a rectangular tube frame fixed to the side surface of the hollow rod 4b of the horizontal long rod 4 of the horizontal support mechanism 1 (FIG. 5). The vertical rod 7 is inserted and drilled at predetermined intervals in the length direction of the vertical rod 7. The vertical hole 7 is fixed to the frame 6a and accordingly to the horizontal long frame 4 by the bolt 6c and the nut 6d by aligning the hole (not shown) with the corresponding hole 6b of the frame 6a. The driving wheel 5 rotates following the progress of the tractor by contact with the ground surface. 9 is a ring of the drive wheel 5, 10 is a spike pin that increases contact with the ground, 11 is a spoke that supports the ring 9, and 12 is an axle that is rotatably supported at the lower ends of both hanging legs 8 a and 8 b of the support frame 8, 13 is a wheel boss, and the base end of the spoke 11 is fixed, 14 is a set screw for fixing the boss 13 to the axle 12, 15 and 16 are bevel gears that mesh with each other, 17 is an L-shaped gear box, 18 is a flexible shaft, A bevel gear 15 is fixed to the proximal end.

A boss 19 is screwed to one end of one arm of the gear box 17, and supports the shaft 15 a of one bevel gear 15 in the one arm of the gear box 17. The other bevel gear 16 is fixed to the axle 12 of the drive wheel 5. 20 is a boss that supports the axle 12 in the other arm of the L-shaped pipe of the gear box 17, 21 is a bush that supports the axle 12 at the lower end of one hanging leg 8a of the bifurcated support frame 8, and 22 is a gear box. 17 is a bush that supports the axle 12 to the lower end of the other leg 8b of the bifurcated support frame 8 through the other arm of 17 and thus through this arm. Accordingly, when the drive wheel 5 rotates, the axle 12 and the bevel gears 15 and 16 rotate. Independent of the rotation of the axle 12, that is, the bevel gears 15 and 16, the other arm of the gear box 17 can rotate around the axle 12 at the lower end of the other hanging leg 8 b of the bifurcated support frame 8, Thereby, the freedom degree of the extension direction of the flexible shaft 18 increases, and a smooth handling can be performed.

Reference numeral 23 (FIGS. 8, 11, and 12) denotes an output gear fixed to the tip of the flexible shaft 18, which selectively meshes with an input gear 44 of a rotary valve mechanism 42 described later of the medicine spreader. 26 is a support plate (not shown in FIG. 12) of the output gear 23 of the flexible shaft 18, 27 is a support shaft for mounting the support plate 26 to the main body mounting bracket 38 of the rotary valve mechanism 42, and 28 is a support plate 26. A biasing spring that biases the output gear 23 to mesh with the input gear 44 of the rotary valve mechanism 42, 29 is an operation handle of the support plate 26, and 30 is a slot formed in the mounting bracket 38 of the rotary valve mechanism 42. The shaft 31 of the gear 23 is movably engaged. The handle 29 is operated and the support plate 26 is tilted about the support shaft 27 by the force of the spring 28 or against the force of the spring 28 to engage or disengage the gear 23 and the gear 44.

40 is a medicine container of the spreader, 41 is a lower hopper, 42 is a rotary valve mechanism provided on the lower side of the hopper 41, 43 is a rotary shaft, 44 is an input gear fixed to the rotary shaft 43, and 45 is rotated. A vane wheel fixed to the shaft 43, 46 is a contact wear preventing plate on an end surface in the axial direction of the vane wheel, and 47 is a feed amount adjusting wheel. The adjusting wheel 47 is formed of a cylindrical body that is slidably attached to the rotary shaft 43 in the axial direction, and each vane of the vane wheel 45 enters the radial (radial direction) slit 47a provided in the cylindrical body. It is variably engaged (FIGS. 8, 12, and 13). The cylindrical body of the adjusting wheel 47 slides against the vanes of the vane wheel 45, and the volume of the space between the adjacent blades (the feed amount) according to the length by which the vane wheel vanes advance and retreat in the slit 47a of the cylindrical body. ) Changes. Reference numeral 48 denotes a sliding adjustment screw for the adjusting wheel 47, which causes the adjusting wheel 47 to slide forward and backward with respect to the vane wheel 45. 49 is a support plate of the screw 48, and supports the screw 48 so as to be rotatable and immovable in the axial direction. Since the screw 48 is provided with an inner screw and screwed into the outer screw 47 b of the adjusting wheel 47, the adjusting wheel 47 moves forward and backward relative to the vanes of the vane wheel 45 by turning the screw 48. Reference numeral 33 denotes a vane guide, and reference numeral 35 denotes a vane chamber that houses the vane wheel 45, and has an inlet 35a and an outlet 35b that communicate with the hopper 41. That is, the rotating shaft 43 is held with the vane guide 33 as a bearing, and the medicine falls from the inlet 35a at the upper part of the vane chamber 35. The medicine enters the gap between the vane wheel 45 and the feed amount adjusting wheel 47, and rotates. To the lower outlet 35b.

50 is a spraying portion provided below the outlet 35b of the rotary valve mechanism 42, 51 is a rotary plate provided via a hopper 52 below the outlet 35b of the rotary valve mechanism, and 53 is an appropriate deflection from the radial direction on its upper surface. The diffusing upright blades 54 provided by being displaced by an angle are rotated by a drive motor of the rotating plate 51 in the direction R opposite to the deflection direction of the upstanding blades 53 (FIGS. 9 and 10). As a result, the medicine dropped near the center of the rotating plate 51 can be evenly distributed over the outer periphery of the rotating plate 51. 55 is a cover of the rotating plate 51, 56 is a collision plate provided in the cover 55 outside the rotating plate 51 so as to be variable in inclination angle, and the medicine scattered by the upright blades 53 of the rotating plate 51 is the inner surface of the cover 55, It hits the collision plate 56, bounces off, and diffuses and spreads in a strip shape in a direction crossing the traveling direction of the tractor.

When the tractor is put into the medicine storage section 40 and the tractor is operated and the required position in the field is reached, the operation handle 29 is moved to mesh the output gear 23 of the flexible shaft 18 with the input gear 44 of the vane vehicle, and the tractor is advanced. As a result, the pre-machine is activated to perform predetermined farm work, and at the same time, the drive wheel 5 is driven to rotate the vane wheel 45 of the rotary valve mechanism 42 together with the feed amount adjusting wheel 47 via the flexible shaft 18. Further, the rotating plate 51 is rotated by the urging of the motor 54 of the spraying unit 50. The medicine in the container 40 falls from the hopper 41 to the rotary valve mechanism 42, and the rotation of the vane wheel 45 causes an amount of medicine according to the volume defined by the adjustment wheel 47 and the rotational speed of the drive wheel 5 to rotate in the spraying part. The medicine falls on the plate 51, is blown off by the upright blades 53, hits the collision plate 56, and the drug is applied to the ground surface immediately after the work of the pre-machine is performed over the width defined by the inclination of the collision plate. Evenly sprayed. When the tractor stops, the drive wheel 5 also stops and the rotary valve mechanism 42 also stops, so that wasteful chemical spraying is prevented. In order to advance the tractor without spraying the medicine, the entire spreader is pulled up, or the gears 23 and 44 are disengaged by the operation handle 29.

The schematic side view which shows the state which connected the chemical spreader of this invention to the traction machine with the front work machine. The top view of FIG. The schematic side view of the chemical spreader of this invention. The top view which shows the horizontal support mechanism of the chemical spreader of this invention. The expansion exploded perspective view of the principal part of the horizontal support mechanism of FIG. The center longitudinal cross-sectional view of the drive wheel of a chemical spreader. The side view of the drive wheel of a chemical spreader. The axial direction expanded sectional view of the rotary valve mechanism of a spreader. It is a schematic front view of a spreader, A rotary valve mechanism is shown by the XX end surface of FIG. The top view of the spreading part of a spreader. The elevation view which shows the meshing separation mechanism of the rotation output gear of a drive wheel, and the input gear of a rotary valve mechanism. The schematic perspective view of a rotary valve mechanism. The disassembled perspective view of a vane wheel and a feed amount adjusting wheel.

Explanation of symbols

A ... Tractor
B ... Bridge C ... Seeding machine D ... Spreader 1 ... Horizontal support mechanism 2 ... Parallel link mechanism 5 ... Driving wheel 6 ... Vertical support mechanism 12 ... Axle 15 , 16 ... Bevel gear 18 ... Flexible shaft 23 ... Output gear 28 ... Biasing spring 29 ... Operation handle 40 ... Drug container 41 ... Hopper 42 ... Rotary valve mechanism 44 ... Input gear 45 ... Vane wheel 47 ... Feeding amount adjusting wheel 48 ... Sliding adjusting screw 51 ... Rotating plate 53 ... Upright blade 54 ... Motor 56 ... Collision Board

Claims (3)

A spreader comprising a medicine storage section, a rotary valve mechanism having a rotary input gear mechanism for sending the medicine from the medicine storage section in a variable amount, and a spraying section for spraying the medicine from the rotary valve mechanism in a variable dispersion width; A horizontal support mechanism that supports the spreader at one end and the other end is attachable to and detachable from the traction machine, a drive wheel having a rotation output gear mechanism, and a drive wheel that attaches the drive wheel to the horizontal support mechanism in a variable hanging position. It consists of a vertical support mechanism, and the spreader is supported above the ground surface by the horizontal support mechanism via the drive wheel vertical support mechanism by the grounding of the drive wheel, and the drive wheel by rolling the ground drive wheel according to the progress of the traction machine A drug spreader that is provided with a flexible shaft that transmits rotation output to a rotation input gear mechanism of a rotation valve mechanism of the spreader. The horizontal support mechanism consists of a mounting bracket to the traction machine, a parallel link mechanism, and a horizontal support rod with variable horizontal length.
The parallel link mechanism consists of four links linked to each other so that they can rotate. One link is tilted and fixed to the mounting bracket for the traction machine, and the base end of the horizontal support rod is tilted to the opposite link. The length of one of the other opposing side links that are fixed and bridges the opposing side links can be adjusted.
The drive wheel vertical support mechanism consists of a vertical support rod attached to the horizontal support rod of the horizontal support mechanism so that its vertical position is variable, and a bifurcated support frame consisting of two suspended legs suspended from its lower end. The drive wheel axle is supported on the drive wheel and the drive wheel can be rotated within the bifurcated support frame.
The flexible shaft has an input gear at the proximal end and an output gear at the distal end, the input gear is always meshed with the rotational output gear of the drive wheel, and the output gear is selected as the rotational input gear of the rotary valve mechanism of the drug spreader The drug spreader according to claim 1, which can be meshed with each other. The rotary valve mechanism is composed of a vane wheel, and a feed amount adjusting wheel having a slit fitted to the vane wheel blade so as to be movable back and forth in an axial direction with respect to the vane wheel. The medicine spreader according to claim 1 or 2, wherein a medicine feeding amount is defined by a fitting length with respect to a slit of a car blade.

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