JPH0639805Y2 - Supply opening adjustment device for chemicals of sprayer - Google Patents

Description

[Detailed description of the device]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for adjusting the supply opening degree of chemicals of a spreader, and more specifically, to a granular fertilizer such as a self-propelled granule spreader or a backpack type power spreader, and weeding. The present invention relates to an opening degree adjusting device suitable for finely adjusting the opening degree when a drug is sprayed on a field.

[Prior art]

Self-propelled granule spreaders and backpack-type power spreaders are used to spread granular fertilizers and chemicals in the field.Self-propelled granule spreaders use engine output as a power source. A blower driven by an engine or the like is mounted on the vehicle body, and the granules in the granule tank are ejected from the injection pipe and sprayed by the blown air. The supply port of the granules supplied to the injection pipe The spray density can be selected by adjusting the opening degree.
For example, Japanese Utility Model Publication No. 55-11621 can be cited.

[Problems to be solved by the device]

With the above-mentioned spreader, the opening of the fertilizer supply path of the fertilizer applicator can be adjusted, but the size of the opening area can be simply selected. Therefore, there is a problem in that it is extremely difficult to spray a fertilizer of granules, a control agent, a herbicide, etc. at a prescribed concentration according to the concentration of the agent. Therefore, in this device, the spraying concentration of the granules can be arbitrarily selected, and the opening area of the injection pipe can be set by the operator.
It is an object of the present invention to provide an opening adjustment device for a sprayer, which can be easily fine-tuned and can be sprayed with a constant concentration of a drug or the like.

[Means for solving problems]

Therefore, in order to achieve the above-mentioned object, the present invention has a shutter that can slide in a direction crossing a supply path,
An operating rod extending to the operator's hand for sliding the shutter and an adjusting plate to which the end of the operating rod is detachably connected and which is rotated by the rotational movement of the scanning lever are provided. At least two adjusting holes are provided on a virtual circle centered on the end of the rod near the shutter drive system, and one of them is arranged near the center of rotation of the adjusting plate. Is.

【Example】

Hereinafter, an embodiment in which the present invention is applied to a self-propelled granule spreader will be described with reference to the accompanying drawings. In these drawings, reference numeral 11 denotes a vehicle body, two wheels 12 are arranged in the width direction, a transmission 12B for transmitting power is provided at a central portion of the axles 12A, and a rear end of the vehicle body 11 in a traveling direction is provided. Two grips 13A of the handle 13 are provided on the part so that the grip 13A of the handle 13 can be gripped by an operator walking and walking while running. A running engine 14 is mounted on the vehicle body 11 between the handles 13, and its output is supplied to the transmission 12B by a transmission shaft (not shown) in the connecting pipe 14A to drive the wheels 12. Has become. An extension frame 15 is provided on the front portion of the vehicle body 11, in other words, on the side opposite to the handlebar, an auxiliary wheel 15A is provided below the extension frame 15, and an engine 16 is provided on the extension frame 15. It is equipped with a driven blower 16A. A duct 16B extends from the blower 16A toward the self-propelled vehicle body 11 side and is continuous with the injection pipe 16Y via a flexible duct 16X. Further, on the vehicle body 11, the fertilizer, adjacent to the blower 16A,
A granule tank 17 for filling and containing granules such as medicines is mounted, and the granules can be dropped and supplied to the communication pipe 17B via the funnel portion 17A. The communication pipe 17B is equipped with an opening / closing mechanism 20 described later for adjusting the opening area of the conduit, and the lower end of the communication pipe 17B communicates with the duct 16B. An operation grip 18A of the recoil starter operation string 18 of the engine 16 is arranged near the grip portion 13A of the handle 13, and an operation lever 22 for operating the operation rod 21 of the opening / closing mechanism 20 is arranged. A crank arm 31 serving as a drive source for rocking the injection pipe 16Y is provided at the shaft end of the axle 12A, and the connecting rod 32 is connected to the crank arm 31 via a universal joint 31A.
, And the end of the connecting rod 32 is connected to the end of the swing arm 33 via a universal joint 32A. The swing arm 33 is attached to one end of a swing support rod 34 extending from the central portion of the vehicle body 11 along the side surface to near the injection pipe 16Y, and the swing arm 33 includes two pairs of arms 33A and 33B. Is connected to the end by a pin 33X, and the end of the connecting rod 32 is connected to this portion. Of the arms 33A and 33B, the boss portion 33 of the arm 33A
A'is fixed to the rocking support rod 34, and the boss portion 33B 'of the arm 33B is slidable with respect to the rocking support rod 34. Therefore, the swing arm 33 is fixed to the swing support rod 34 in the swing direction. Further, the arms 33A and 33B are respectively provided with a female screw portion 33Y and a free-running shaft support portion 33Y ′, and the female screw portion 33Y is provided with a screw rod.
35A is screwed, and the end of the screw rod 35 is a connecting rod 35A that is in the middle folded state.
Crank handle as swing angle adjustment handle via
It is connected to 35B. Further, the base portion 36A of the injection pipe support arm 35 is fixed to the other end of the swing support rod 34, and the injection pipe support arm 36 supports the injection pipe 16Y via a suspension rod 36B. The connecting rod 32 has threaded portions 32X and 32Y at both ends, and the substantial length can be selected by adjusting the amount of screwing into the universal joints 31A and 32A with the nut 32Z, and the swing center of the swing support rod 34 can be selected. It is designed to determine the slope of the line. The opening / closing mechanism 20 has the following configuration, and the end portion 21A of the operating rod 21 is provided with the base portion 22A of the operating lever 22 with respect to the operating lever 22 provided near the grip portion 13A of the handle 13.
It is connected via an adjusting plate 23 fixed to the control lever 22 and is allowed to rotate together with the operating lever 22 with respect to the support shaft 22B of the operating lever 22. The support shaft 22B is fixed to a support plate 22X provided on the handle 13, the support plate 22X and the adjustment plate 23 are located in a parallel plane, and the arm plate 22Y extends from the support plate 22X in a right angle direction. The operation guide 22Z of the operation lever 22 is fixed to the end portion. The connection between the adjusting plate 23 and the end 21A of the operating rod 21 is a pivotal connection by a pin, and an adjusting hole formed in the adjusting plate 23.
Select either 23X or 23Y to select the degree of fine adjustment of shutter opening / closing described later. The adjustment holes 23X, 23Y are located above the imaginary line P connecting the centers of the support shaft 22B and the other end 21B on the imaginary circle S drawn around the other end 21B of the operating rod 21, that is, the shutter 2
The adjustment hole 23Y is located on the side where the 4 is opened, and is close to the support shaft 22B of the operation lever 22. The other end 21B of the operation rod 21 is connected via a crank arm 26 to a shutter drive shaft 24A that penetrates a casing 25 of an opening / closing mechanism 20 that houses a shutter 24. The casing 25 has a shaft hole 25A through which the shutter drive shaft 24A is inserted.
A fan-shaped recessed space 25B is formed in a fan shape around A, allowing a partial rotational movement of the shutter drive arm 24B and slightly deeper than the thickness of the shutter drive arm. A recessed space which becomes the air pressure supply chamber 25X is formed continuously with the recessed space 25B, and an intake hole 25Y for leading a part of the pressured air from the blower 16A is formed in the air pressure supply chamber 25X. The air pressure feed chamber 25X is a space that allows the shutter 24 to slide, extends to the granule supply path 25M and communicates therewith. A plate-shaped upper casing 27 is covered with respect to the casing 25, and a concave space 27A which accommodates the shutter 24 and allows only its linear movement is formed so as to be open on the side facing the casing 25. . An air pressure feeding chamber 27B having the same shape as the air pressure feeding chamber 25X is formed on the upper inner surface of the concave space 27A, and the air pressure feeding chamber 27B allows the shutter 24 to slide and communicates with the communication pipe 17B to the supply path 27Y. It extends and is in communication with it. And, the air feeding chamber 25X is always open, and the shutter 2
Even if 4 is in the fully open state, in other words, even if the shutter 24 is accommodated in the deepest part of the pneumatic feeding chambers 25X and 27B, the shutter 24 does not overlap the intake hole 25Y. . Next, a spraying operation using the device for adjusting the supply opening degree of the medicine of the sprayer according to the present invention will be described. First, the engines 14 and 16 are started to prepare for running, and the blower 1
6A is prepared for operation, and its opening degree is determined in relation to the granules to be sprayed by opening / closing adjustment of the opening / closing mechanism 20, and the amount sprayed and sprayed from the spray pipe 16Y in the field is determined. Then, the end 21A of the operation rod 21 is adjusted to the adjustment hole 2 of the adjustment plate 23.
When 3X is selected and connected, the shutter 24 is supplied to the supply paths 27Y and 25 by one stroke of the operation lever 22 (fully closed T to fully open K).
It can be slid over the entire area of M. In other words, it is possible to operate from the fully closed state to the fully opened state. Further, when the adjustment hole 23Y is selected and the end portion 21A of the operation rod 21 is connected to the adjustment plate 23, it is not necessary to adjust the length of the operation rod 21. The shutter 24 in the stroke (fully closed T to fully open K) moves from the fully closed state to the half open state, and the supply path 27
Half of the opening area of Y, 25M is closed. In other words, the adjustment lever 23X and the adjustment hole 23Y
The distance in response to one stroke from fully closed T to fully open K of 22 is doubled, and the shutter 24 slides at twice the speed in terms of time, especially when a small amount is sprayed. It facilitates fine adjustment of the opening by 24. Since the opening / closing motion of the shutter 24 is performed by the operation rod 21, the operation of the operation rod 21 drives the shutter drive arm 24B via the crank arm 26 and the shutter drive shaft 24A, and the pin 24C is rotated in the long hole 24X. The shutter 24 is linearly moved in the concave space 27A. A part of the compressed air from the blower 16A is introduced into the air pressure chambers 25X and 27B through the intake holes 25Y, and the compressed air is released by the shutter 24
Blow through the supply channels 25M, 27Y along the upper and lower surfaces of the shutter 24 in the air pressure feed chambers 25X, 27B that are spaces that accommodate the residual granules from the end of the shutter 24 to the side surface thereof. This prevents the granules from being caught when the shutter is fully closed. In addition, traveling in the field is performed by driving the wheels 12 with the output of the engine 14, so that the operator does not use the steering wheel.
Grip the grip portion 13A of 13 and follow the walking movement to perform the steering operation. As the wheels 12 rotate, the crank arm 31
Moves the crank rod linearly in the longitudinal direction, and the end of the connecting rod 32 is connected to the swing arm 33 formed by the arms 33A and 33B via the universal joint 32A. Swing motion in a vertical plane. Since the base portion of the swing arm 33 is fixed to the swing support rod 34, the swing motion of the swing arm 33 is the rotation swing of the swing support rod 34, and the injection pipe support arm 36 fixed to the other end portion. Like the swing arm 33, the swing arm 33 is swung in a vertical plane. The oscillating movement of the spray tube support arm 36 changes the elevation angle of the spray of granules in the spray tube 16Y, so that the area where the granules reach the field is far from near the sprayer, and far from near. It changes and moves, and uniform spraying is performed. The spraying area of the granule is determined by the elevation angle of the injection pipe 16Y, but blower 1
Blower 16A, which is also determined by the relationship with the amount of air blown from 6A.
The output of the blower 16A is determined by adjusting the throttle opening of the engine 16 that drives the engine. The elevation angle of the injection pipe 16Y, which determines the granule spraying region, is arbitrarily selected at the hand of the worker who follows the walking. That is, by appropriately rotating the crank handle 35B, the screw rod 35 is rotated through the connecting rod 35A, and the distance between the screwed ends of the arms 33A and 33B forming the swing arm 33, in other words, the arm 33B.
By moving along the swing support rod 34, the effective length of the swing arm 33 can be changed. For example, if the threaded ends of the arms 33A and 33B with the screw rod 35 become large, the swing arm
Although the effective length of 33 becomes short and the swinging arc length rotated by the connecting rod 32 becomes short, the fan-shaped central angle of the swinging motion becomes large on the contrary, and the jet tube support arm 36 is swung at a large angle to cause the grain to move. The agent spray area is wide. Conversely, if the effective length of the swing arm 33 is increased by rotating the crank handle 35B in the opposite direction to the front, the center angle of the swing fan-shaped locus drawn by the swing support rod 34 becomes smaller, and the injection pipe support The locus of the swinging motion of the arm 36 becomes smaller,
The reach of granules becomes smaller. Therefore, when the effective length of the swing arm 33 is determined by the rotation of the crank handle 35B as the swing angle adjusting handle of the injection pipe 16Y, the swing arm 33 rotates as the wheels 12 rotate.
A fan-shaped motion corresponding to the effective length of 33 is applied to the injection pipe 16Y and is sprayed while changing the spraying area of the granules. In the above explanation, the example applied to the self-propelled granule spreader was given, but it can also be applied to the backpack type power spreader and the operation lever
It is useful to position 22 at the worker's hand.

[Effect of device]

As is clear from the above description, according to the supply opening degree adjusting device for the medicine of the spreader of the present invention, the granule supply path is opened and closed by the movement of the shutter, and the opening and closing of the shutter is operated. Rotate the operating lever through the rod to select the connecting point between the operating rod and the operating lever from multiple holes drilled in advance with different distances between the operating lever support shaft and change the connecting point. Since it is configured to determine the operating length of the rod, the opening area of the supply path by the shutter can be freely selected even with the same operating stroke of the operating lever, and the concentration and the fertilizer with a rough application amount In addition, with a herbicide that adversely affects crops if the spraying amount is not strict, the operation width of the shutter during opening adjustment can be optimized and the length can be adjusted when changing the operating rod. Is not required, there is an effect, such as the handling is easy.

[Brief description of drawings]

FIG. 1 is a side view of a self-propelled granule spraying machine, FIG. 2 is a rear view of the same, and FIG. 3 is FIG.
III-III plan view, FIG. 4 is FIG. 1 IV-IV rear view,
5 is a partially cutaway side view taken along the line VV in FIG. 1, FIG. 6 is a partially cutaway side view of the opening adjustment mechanism, and FIG. 7 is an exploded perspective view of the shutter portion. 11 …… Body 12 …… Wheels, 12A …… Axle, 12B …… Transmission 13 …… Handle, 13A …… Grip part 14 …… Running engine, 14A …… Connection pipe 15 …… Extension frame, 15A …… Auxiliary Wheel 16 …… Engine, 16A …… Blower, 16B …… Duct, 16X
...... Flexible duct, 16Y …… Spray tube 17 …… Particle tank, 17A …… Rot part, 17B …… Communication tube 18 …… Recoil starter operation string 20 …… Opening and closing mechanism, 21 …… Operation rod, 21A, 21B ...... End 22 …… Control lever 23 …… Adjustment plate, 23X, 23Y …… Adjustment hole 24 …… Shutter, 24A …… Shutter drive shaft, 24B …… Drive arm, 24C …… pin, 24X …… Oval hole 25 ... Casing, 25A ... Shaft hole, 25B ... Recessed space, 25X
...... Pneumatic feed chamber, 25Y …… Intake hole, 25Z …… Concave groove, 25M…
… Supply path 26 …… Crank arm 27 …… Upper casing, 27A …… Recessed space, 27B …… Air supply chamber, 27Y …… Supply path 30 …… Injection tube drive mechanism, 31 …… Crank arm, 31A, 32A
...... Universal joint, 32 ...... connecting rod, 32X, 32Y ...... screw part, 32Z ...... nut, 33 ...... swing arm, 33A, 33B ...
… Arm, 33X… Pin, 33Y… Female screw part, 34… Rotating support rod, 35… Screw rod, 35A… Connecting rod, 35B… Crank handle, 36 …… Injection tube support arm, 36A… … Base, 36B
...... Hanging rod

Claims (1)

[Scope of utility model registration request] 1. A sprayer provided with an opening / closing mechanism for spraying and spraying the granules in a granule tank from a jet tube by blower air from a blower, and an opening / closing mechanism for adjusting the opening area in the supply passage leading to the granules. A shutter that can slide across the
An operating rod extending to the operator's hand for sliding the shutter and an adjusting plate to which the end of the operating rod is detachably connected and which is rotated by the rotational movement of the operating lever are provided. Dispersion characterized in that at least two adjusting holes are provided on a virtual circle centered on the end of the rod near the shutter drive system, and one of them is located near the center of rotation of the adjusting plate. A device for adjusting the opening of the supply opening for chemicals in machines.