JP3779130B2 - Liquid sprayer and liquid spraying method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid sprayer and a liquid spraying method.
[0002]
[Prior art]
As a kind of liquid spreader, a liquid spray nozzle and a hose reel are mounted on the traveling machine body, and the traveling machine body is reciprocated along the field while spraying liquid such as agricultural chemicals from the liquid spray nozzle. There has been proposed one in which the hose reel is idled to feed out the spray liquid hose, and in the return path, the hose reel is driven to wind up the spray liquid hose (for example, JP-A-8-309244). See the official gazette). According to this, it is said that there is an advantage that an operator's excessive labor is not required for feeding and collecting the spray liquid hose in the liquid spraying work.
[0003]
[Problems to be solved by the invention]
However, according to the conventional configuration, since the liquid spray nozzle is attached to the traveling machine body in a fixed posture, for example, when the traveling road surface of the traveling machine body has irregularities, the nozzle of the liquid spray nozzle There is a problem that the mouth moves up and down irregularly, the dispersion distance of the sprayed liquid varies irregularly, and the residue remains.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a liquid spraying device and a liquid spraying method that do not leave any residue even when the traveling road surface of the traveling machine body is uneven.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a liquid spreader according to the present invention is provided for hand-held spraying that includes at least two nozzle ports having different liquid reach distances on the tip end side of a rod-shaped nozzle tube and jets liquid in a straight line. A nozzle up-and-down swing mechanism in which a liquid jet nozzle is detachably mounted on a traveling machine body, and the rod-shaped nozzle tube is swung up and down regularly so that the at least two nozzle ports swing up and down regularly. (Claim 1).
[0006]
In the present invention, while traveling the traveling machine body along the 圃 field, and, by regularly rocking the nozzle tube of the rod-shaped vertically by the action of the nozzle vertical movement mechanism, wherein the liquid material injection while swinging the nozzle opening of the nozzle up and down to inject straight to liquids toward the field from the nozzle opening. Since the nozzle port swings up and down regularly, the reach distance of the liquid to be ejected can be widened, so that the traveling path of the traveling machine body is uneven, and the traveling machine body moves up and down. Even so, leftovers are prevented as much as possible.
[0007]
In addition, since the at least two nozzle ports have different liquid reach distances, it is possible to spray a wide width at a time and improve the spraying efficiency. Furthermore, since the operator can remove the liquid jet nozzle from the traveling machine body and perform hand-held spraying as necessary, it is possible to perform appropriate spraying according to the situation of the spraying site.
[0008]
Further, as one embodiment of the present invention, the nozzle vertical swing mechanism may be provided with nozzle swing stop operation means for stopping the vertical swing of the rod-shaped nozzle tube as necessary. (Claim 2 ). When the traveling path of the traveling machine body along the farm field is paved and the surface has no irregularities that adversely affect the dispersibility by the nozzles, the nozzle swing stop operating means is operated, Stops the vertical swing of the nozzle opening. Thereby, the spraying method according to the condition of the traveling path of the traveling machine body can be selected, and it is possible to appropriately cope with the case where the traveling path of the traveling machine body is flat.
[0009]
Furthermore, the liquid injection nozzle may be provided with a detachable with one touch to the traveling machine body provided with a grip portion (claim 3). In this way, the hand-held state of the rod-shaped nozzle tube is stabilized, so that hand-held spraying can be performed easily and the liquid ejecting nozzle can be quickly attached and detached.
[0010]
The nozzle up-and-down swing mechanism may be driven by a unique drive source. However, if the travel drive prime mover of the travel aircraft body is used as the drive source (Claim 4 ), the travel aircraft body Since the weight is reduced, the vehicle can travel smoothly even on soft ground, and the steering operation of the traveling machine body is facilitated, which is more preferable. In this case, furthermore, it is possible to make it possible to stop the vertical swing of the rod-shaped nozzle tube independently of the stop of the traveling machine body (Claim 5).
[0011]
As another embodiment of the present invention, the traveling machine body is a machine body frame that is supported by a single driving front wheel and a pair of left and right caster-type steering rear wheels that can freely change directions. And a steering handle extending rearward from the machine body frame (claim 6).
[0012]
Also, the spray solution hose having one end and the other end while being detachably connected to the discharge side of the travel start point the liquid spray pump which is placed in the vicinity of the traveling machine body is connected before Symbol liquid body injection nozzle, wherein A hose reel that unwinds the spray liquid hose in accordance with the traveling speed in the traveling stroke of the traveling machine body and automatically winds the spray liquid hose in accordance with the traveling speed in the return stroke of the traveling machine body, It may be assumed that it is mounted on an airframe (claim 7).
[0013]
In this way, the spray liquid hose is automatically unwound and wound up by the hose reel according to the traveling speed of the traveling machine body. There is an advantage that does not require excessive labor of the person.
[0014]
On the other hand, in the liquid spraying method according to the present invention, a hand-sprayed liquid jet nozzle having at least two nozzle ports having different liquid reach distances on the tip side of a rod-shaped nozzle tube is mounted on a traveling machine body, Injecting liquid straightly from the at least two nozzle ports toward the field while causing the traveling machine body to travel along the field and swinging the rod-shaped nozzle tube up and down regularly. (Claim 8).
[0015]
According to the method of the present invention, since the reach distance of the liquid to be ejected can be widened by swinging the nozzle port up and down, the traveling path of the traveling machine body is uneven, and the traveling machine body is moved up and down. Even if it moves, it is prevented as much as possible. The front Symbol liquid body injection nozzle, since it is mounted on the traveling machine body, there is an advantage that the work effort than hand sprayed is reduced.
[0016]
One embodiment of the present invention method, the traveling machine body, equipped with a spray solution hose for sending towards the spray solution in a spray solution tank which is placed outside the vehicle body to the front Symbol liquid body injection nozzle, The spray liquid hose can be fed out according to the traveling speed in the traveling stroke of the traveling machine body, and the spray liquid hose can be automatically collected according to the traveling speed in the return stroke of the traveling machine body. (Claim 9).
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of the invention will be described with reference to the accompanying drawings.
[0018]
FIG. 1 is a right side view of a liquid spreader according to an embodiment of the present invention, and FIG. 2 is a plan view schematically showing a drive system of the liquid spreader of FIG.
[0019]
As shown in FIG. 1, the liquid spreader 1 according to the present embodiment is of a type that the operator M steers while walking, and the body frame 3 of the traveling machine body 2 includes drive wheels 4. The steering wheels 5 and 5 are supported so as to be able to travel forward and backward. The airframe 3 is formed by combining steel pipe materials from the viewpoint of reducing the weight of the traveling airframe 2. In the present embodiment, one front wheel 4 is used as the driving wheel, and a pair of left and right caster-type idle wheels 5 and 5 each of which can be freely changed in direction is used as the steering wheel. A pair of left and right steering handles 6, 6 fixed to the body frame 3 extend toward the rear of the body frame 3.
[0020]
The worker M stands at a rear position of the traveling machine body 2 and grips the pair of left and right steering handles 6 and 6 with his / her hands to steer the traveling machine body 2. The worker M performs the steering operation of the traveling machine body 2 while following the traveling machine body 2 when the traveling machine body 2 moves forward (when traveling to the right in FIG. 1). When the traveling machine body 2 moves backward (when traveling to the left in FIG. 1), the steering operation of the traveling machine body 2 is performed while leading the traveling machine body 2 backward in the traveling direction. . When the worker M applies a force in the horizontal direction to the pair of left and right steering handles 6 and 6 while the traveling machine body 2 is traveling forward and backward, the pair of left and right caster type play is correspondingly applied. Since the direction of the rear wheels 5 and 5 changes instantly, coupled with the fact that the front driving wheel 4 is a single wheel, the traveling direction of the traveling machine body 2 can be easily controlled with a small force.
[0021]
As shown in FIG. 2, the axle 7 of the driving front wheel 4 has an internal combustion engine 8 mounted on the traveling machine body 2 as a prime mover, and pulleys 9, 10 and a V belt 11 as transmission means, and a forward / reverse switching function. It is rotationally driven via the mission device 12 that it has.
[0022]
In the present embodiment, a belt tension type is adopted as the traveling clutch 13. As shown in FIG. 1, the worker M grips the traveling clutch lever 14 pivotally supported by one of the left and right steering handles 6 and 6 toward the steering handle 6. When operated, the operating force is transmitted to the tension pulley 16 via the Bowden cable 15, and the tension pulley 16, which is always provided with a restoring force to the power disconnection position away from the V belt 11, The power is transmitted from the internal combustion engine 8 to the front axle 7 by displacing the belt 11 to a power transmission position that gives tension to the belt 11. The traveling direction of the traveling machine body 2 is switched by controlling the transmission device 12 by swinging a forward / reverse switching lever 17 attached to the traveling machine body 2.
[0023]
Wherein the traveling machine body 2, in addition to the internal combustion engine 8, a liquid body injection nozzle 18, the spray solution hose 19 for feeding the spray liquid to the liquid injection nozzle 18, the front and rear of the traveling machine body 2 A hose reel 20 for feeding and winding the spray liquid hose 19 according to the advance speed is mounted. The liquid feed downstream end 19a of the spray solution hose 19 (see FIG. 3) is connected before Symbol liquid body injection nozzle 18. On the other hand, the liquid supply upstream end 19b of the spray liquid hose 19 is, as will be described later with reference to FIG. 4, a liquid spray pump 21 that is fixed in the vicinity of the traveling start point of the traveling machine body 2 at the spraying work site. The discharge port 22 is detachably connected via a one-touch coupler (not shown) or the like.
[0024]
As shown in FIG. 2, the hose reel 20 is driven by the front axle 7 via an intermediate shaft 29 by sprockets 23, 24, 25, 26 and chains 27, 28 as transmission means. A one-way clutch 30 is interposed in the drive system of the hose reel 20, and when the traveling machine body 2 moves forward (when traveling to the right in FIG. 2), the traveling machine body 2 rotates. The spray liquid hose 19 is pulled by the traveling machine body 2 and is fed out as the vehicle travels. On the other hand, when the traveling machine body 2 moves backward (when traveling to the left in FIG. 2), the axle 7 side The spray liquid hose 19 can be automatically wound by the driving force of.
[0025]
In addition, a torque limiter device 31 of an appropriate type known per se is interposed between the intermediate shaft 29 and the hose reel 20, and the traveling speed of the traveling machine body 2 during reverse travel and the spray liquid hose 19 The winding speed is synchronized with the hose reel 20 so that the spray liquid hose 19 can be reliably wound without loosening.
[0026]
Furthermore, the winding position of the spray liquid hose 19 is adjusted in synchronization with the hose winding speed of the hose reel 20 so that the spray liquid hose 19 is orderly wound within the hose winding width of the hose reel 20. A hose aligning and winding device 32 known per se is provided for reciprocal movement.
[0027]
Next, with reference to FIG. 3, described before Symbol liquid body injection nozzle 18. FIG. 3 is a rear view of the main part of the liquid spreader of FIG.
[0028]
Before SL liquid body injection nozzle 18 is of the type capable of straightforward inject spray liquid L to far. The liquid jet nozzle 18 according to the present embodiment includes two nozzle ports 34 and 35 having different liquid reach distances D1 and D2 (see FIG. 4) on the distal end side of a long rod-shaped nozzle tube 33. ing. For example, the spray liquid L1 sprayed from the one nozzle port 34 reaches about 5 m ahead, pours down to the ground in the entire range, and the spray liquid L2 sprayed from the other nozzle port 35 is about 15 m ahead. And the entire range from the liquid jet nozzle 18 down to the ground within a range of 15 m ahead and from the liquid jet nozzle 18 to the 15 m ahead of the liquid jet nozzle by simultaneous jetting from the two nozzle ports 34 and 35. In addition, the spray liquid can be distributed evenly.
[0029]
The number of the nozzle openings 34 and 35 may be two or three or more, but it is assumed that at least two nozzle openings having different liquid reach distances D1 and D2 are provided as in the present embodiment. Then, by traveling the traveling machine body 2 while spraying liquid toward the left or right outward with respect to the traveling direction of the traveling machine body 2, it becomes possible to spread a wide range at a time and improve the spraying efficiency. Therefore, it is preferable.
[0030]
The liquid jet nozzle 18 includes grip portions 36 and 37 for hand-held spraying at the rear end portion and the middle portion of the nozzle tube 33, and the downstream end portion 19a of the spray liquid hose 19 is connected thereto. The inlet pipe 38 is provided with an open / close cock lever 39.
[0031]
The liquid ejection nozzle 18 is configured so that the spray liquid L is ejected either leftward or rightward with respect to the traveling direction of the traveling machine body 2, in this embodiment, toward the left outward. , 35 are attached to the upper frame 3a of the aircraft frame 3 with the traveling vehicle body 2 facing left outward and obliquely upward.
[0032]
The nozzle ports 34 and 35 of the liquid jet nozzle 18 are regularly and continuously swung up and down within a range of, for example, about 20 degrees by the action of the nozzle up-and-down swing mechanism 40 during the spraying operation. It comes to be moved. This is because the nozzle openings 34 and 35 are intentionally swung up and down relatively large, so that a predetermined width is formed in advance in the reach distance of the sprayed liquid L to be sprayed, and the travel path of the traveling machine body 2 This is to prevent the sprayed liquid L from being left behind as much as possible even when the traveling machine body 2 moves up and down during traveling due to unevenness. It is desirable that the vertical swing speed of the liquid jet nozzle 18 is set to be moderately faster than the travel speed of the traveling machine body 2.
[0033]
As shown in FIGS. 1 and 3, in the present embodiment, the nozzle vertical swing mechanism 40 includes a nozzle support column 41 erected on the upper frame 3 a and the nozzle support column 41 with respect to the nozzle support column 41. A nozzle tube pivot pin 42 that pivotally supports the nozzle tube 33 so as to swing up and down, and an eccentric cam mechanism 43 that drives the nozzle tube 33 to swing up and down. The eccentric cam mechanism 43 includes a nozzle vertical swing drive sprocket 44 rotatably supported by the upper frame 3a, an eccentric shaft 45 attached to the nozzle vertical swing drive sprocket 44, and the eccentric shaft. A connecting arm 48 for connecting the connecting pin 46 on the nozzle tube 33 side spaced apart from the shaft 45 to each other via ball joints 47 and 47 is provided.
[0034]
In the present embodiment, the internal combustion engine 8 for driving is used as a drive source for the nozzle vertical swing mechanism 40. In other words, in the present embodiment, the nozzle up-and-down swing driving sprocket 44 is driven by the nozzle driving chain 50 wound around the nozzle driving output sprocket 49 of the mission device 12.
[0035]
When the nozzle vertical swing mechanism 40 is provided with nozzle swing stop operation means for stopping the vertical swing of the nozzle openings 34 and 35 as necessary, the travel path of the traveling machine body 2 is provided. When the nozzle openings 34 and 35 do not need to be swung up and down, such as when the pavement is flat, etc., traveling spraying can be performed with the up and down swing of the nozzle openings 34 and 35 stopped. And more preferable. As in this embodiment, the eccentric shaft 45 is detachably attached to the nozzle up-and-down swing driving sprocket 44, and is attached to the nozzle up-and-down swing driving sprocket 44 in an attachable and detachable manner. The shaft 45 can be used as the nozzle oscillation stop operating means, and for example, a tension clutch can be provided by using a belt transmission system for the vertical oscillation drive system of the liquid jet nozzle 18 instead of the chain transmission. You can also.
[0036]
Also, remove the previous SL liquid body injection nozzle 18, if Seshimere detachable from the traveling machine body 2, in addition to spraying mounted to the traveling machine body 2, the liquid injection nozzle 18 from the traveling machine body 2 It is possible to perform hand-held spraying, and an appropriate spraying method can be selected according to the situation of the spraying work site. For example, with respect to the nozzle tube support member 51 that is swung up and down by the action of the nozzle up-and-down swing mechanism 40, the liquid ejecting nozzle 18 can be detachably attached by an appropriate means known per se such as a hand tightening screw. Can be worn. It is more preferable that the liquid jet nozzle 18 is detachable from the nozzle tube support member 51 with one touch.
[0037]
The liquid spreader 1 according to the present embodiment configured as described above is used as shown in FIG.
[0038]
First, the liquid spreader 1 is carried on, for example, a truck 52 or the like on the farm road A of the starting end Rs of the shore R extending along the paddy field F serving as a site for spraying chemicals or the like. The truck 52 includes a spray liquid tank 53, a high-pressure liquid spray pump 21 that pumps the spray liquid L in the spray liquid tank 53, and a pump-driven internal combustion engine as a drive source of the pump 21. 54 etc. are mounted. It is more preferable that the operation of the internal combustion engine 54 for driving the pump and the liquid spraying pump 21 can be remotely controlled by a radio control.
[0039]
The operator M lowers the chemical sprayer 1 from the truck 52 and arranges the chemical sprayer 1 at the start end Rs of the shore R as the travel start point of the traveling machine body 2, and the upstream end 19 b of the spray liquid hose 19. Is connected to the discharge port 22 side of the liquid spraying pump 21. Then, with the open / close cock lever 39 of the liquid jet nozzle 18 being operated to the cock closing position, the pump driving internal combustion engine 54 is driven, and the liquid spraying pump 21 is driven.
[0040]
The operator M operates the open / close cock lever 39 of the liquid ejecting nozzle 18 to a position when the cock is opened, and the liquid ejecting nozzle 18 causes the traveling machine body 2 to travel forward along the shore R. A wide spread of the spray liquid L is performed. The spray liquid hose 19 is fed out from the hose reel 20 which is idled by the advancement of the traveling machine body 2.
[0041]
In the embodiment shown in FIG. 4, the spray liquid L sprayed from the liquid spray nozzle 18 is sprayed on a half width region of the paddy field F, and on the other half region, the opposite side R Spread from '.
[0042]
In conjunction with the traveling of the traveling machine body 2, the liquid jet nozzle 18 swings up and down with a predetermined amplitude, so that a predetermined width is formed in the reach distance of the spray liquid L from the nozzle ports 34 and 35. For this reason, even if the traveling machine body 2 moves up and down during the spraying operation due to irregularities on the surface of the shore R of the traveling machine body 2, it is possible to prevent a region where the sprayed liquid L does not sufficiently spread.
[0043]
When the traveling machine body 2 reaches the terminal end Re of the shore R, the worker M stops traveling of the traveling machine body 2 and operates the opening / closing cock lever 39 of the liquid jet nozzle 18 to perform the spraying. The spraying of the liquid L is stopped, and the forward / reverse switching lever 17 is swung to switch the traveling machine body 2 to backward traveling. Then, the hose reel 20 winds the spray liquid hose 19 in accordance with the reverse speed of the traveling machine body 2.
[0044]
It should be noted that the direction of the liquid jet nozzle 18 can be freely changed on both the left and right sides of the traveling machine body 2 so that the traveling machine body 2 can be moved backward while spraying on the opposite side of the field in the return stroke. It may be.
[0045]
In addition, when necessary, such as when the outer peripheral shape of the field is complicated, the liquid ejecting nozzle 18 is removed from the traveling machine body 2 and the worker M enters the paddy field F, for example, to perform hand-held spraying. It can also be done.
[0046]
As described above, when the one-spreading operation including the forward stroke and the return stroke of the traveling machine body 2 is completed, the liquid spreader 1 is loaded onto the truck 52, moved to the next shore, and Similarly, the next spraying operation is started.
[0047]
The spraying work performed using the liquid sprayer 1 can be performed by the worker M alone. In addition, there is an advantage that it is possible to perform a reliable spraying operation with little effort and without leaving any residue.
[0048]
Further, since the spray liquid hose 19 is automatically fed and wound by the hose reel 20, there is an advantage that the spray liquid hose 19 is not dragged and its life is extended.
[Brief description of the drawings]
FIG. 1 is a right side view of a liquid spreader according to an embodiment of the present invention.
FIG. 2 is a plan view showing an expanded drive system of the liquid spreader of FIG.
FIG. 3 is a rear view of the main part of the liquid spreader of FIG. 1;
4 is a plan view showing an example of a liquid spraying method using the liquid sprayer of FIG. 1. FIG.
[Explanation of symbols]
2 traveling machine body 3 machine body frame 4 driving front wheel 5, 5 idle-rotating rear wheel 6, 6 steering wheel 8 driving motor (internal combustion engine)
18 liquid body injection nozzle 19 spray liquid hose 19a and the other end (feeding downstream end)
19b One end (end part on the upstream side)
20 Hose reel 21 Liquid spray pump 22 Discharge port
33 Nozzle pipe 34, 35 Nozzle port
36, 37 Grip part 40 Nozzle vertical swing mechanism 45 Nozzle swing stop operation means (detachable eccentric shaft)
53 Spray liquid tank D1, D2 Liquid reach distance F Farm (paddy field)
L Liquid (spraying liquid)
Rs starting point

Claims (9)

At least two nozzle ports (34, 35) having different liquid reach distances (D1, D2) on the tip end side of the rod-shaped nozzle tube (33), and a liquid jet nozzle for hand-held spraying that jets the liquid straight. (18) is detachably mounted on the traveling machine body (2), and the rod-like nozzle pipe (33) is regularly arranged so that the at least two nozzle ports (34, 35) swing up and down regularly. A liquid spreader provided with a nozzle vertical swing mechanism (40) that swings up and down. The nozzle vertical swing mechanism (40) is provided with nozzle swing stop operating means (45) for stopping the vertical swing of the rod-shaped nozzle tube (33) as necessary. Item 2. A liquid spreader according to Item 1 . Before SL liquid body injection nozzle (18) is, together with the provided grip portion (36, 37) are detachable with one touch to the traveling machine body (2), a liquid spray according to claim 1 or 2 Machine. The liquid sprayer according to claim 1, 2 or 3 , wherein the driving motor (8) for driving the traveling machine body (2) serves as a drive source for the nozzle up-and-down swing mechanism (40). The liquid sprayer according to claim 4, wherein the vertical swing of the rod-shaped nozzle tube (33) can be stopped independently of the stop of the traveling machine body (2).   The traveling machine body (2) is a machine body supported by a single drive front wheel (4) and a pair of left and right caster-type steerable rear wheels (5, 5) that can freely change directions. The liquid according to any one of claims 1 to 5, comprising a frame (3) and a steering handle (6, 6) extending from the fuselage frame (3) toward the rear thereof. Spreader. One end (19b) is detachably connected to the discharge port (22) side of the liquid spraying pump (21) placed in the vicinity of the traveling start point (Rs) of the traveling machine body (2) and the other end (19a). the traveling but a dusting liquid hose (19) connected before Symbol liquid body injection nozzle (18), wherein with feed the spray liquid hose (19) in accordance with the moving speed in the forward stroke of the traveling machine body (2) A hose reel (20) that automatically winds up the spray liquid hose (19) according to the traveling speed in the return stroke of the airframe (2) is mounted on the traveling airframe (2). The liquid spreader as described in any one of 1 thru | or 6. A traveling body includes a liquid spray nozzle (18) for hand-held spraying comprising at least two nozzle ports (34, 35) having different liquid reach distances (D1, D2) on the tip end side of the rod-shaped nozzle tube (33). Mounted on (2), while traveling the traveling body (2) along the field (F) and swinging the rod-shaped nozzle tube (33) up and down regularly, the at least two A liquid spraying method in which liquid is jetted straight from the nozzle opening (34, 35) toward the field (F). Wherein the traveling machine body (2), the traveling machine body (2) spraying solution for sending towards the spray liquid in the stationary been sprayed liquid tank to the outside (53) of (L) before SL liquid body injection nozzle (18) A hose (19) is mounted, and the spray liquid hose (19) is fed out in accordance with the traveling speed in the travel stroke of the traveling aircraft body (2), and in response to the traveling speed in the return stroke of the traveling aircraft body (2). The liquid spraying method according to claim 8, wherein the spraying liquid hose (19) is automatically recovered.

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