JP3876342B2 - Wind shield for speed sprayer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wind spray device for a speed sprayer that closes a part of an air outlet formed in a body of a speed sprayer as necessary, and blocks an air current from the part of the air outlet. is there.

  As a sprayer for efficiently spraying medicinal solutions etc. over a wide range in orchards, etc., it has a large number of spray nozzles along an arc-shaped air outlet formed in the aircraft, and the spray particles sprayed from the spray nozzles There is known a speed sprayer that can diffuse and disperse at a wide angle and far away.

  By the way, in the field of edible crop cultivation such as vegetables and fruits, between a group of crops that are cultivated adjacent to each other, a specific type of chemical solution is sprayed only on one of the crop groups, In some cases, it is necessary to avoid scattering of certain types of chemicals. For example, when the pesticide that is permitted to be used for the one crop group but is prohibited to be used for the other crop group, or the crop is premised on the use of the pesticide. However, the other crop group is a crop grown without agricultural chemicals. In addition, even when there is a house adjacent to the farmland, it is necessary to avoid spraying chemicals toward the house.

In the speed sprayer, as a conventional technique for preventing the chemical solution from splashing in a specific direction, for example, a slide cover that opens and closes a part of the air outlet along the front-rear direction of the aircraft is provided for each of the upper and left and right groups. By arranging each of the plurality of spray nozzle groups capable of controlling the spraying and sliding each slide cover back and forth along a guide rod attached to the machine body so as to extend in the front-rear direction, There has been proposed a structure in which a part of the air outlet is closed to partially block the air blowing from the air outlet (see Patent Documents 1, 2, and 3).
Japanese Utility Model Publication No. 63-51673 Utility Model Registration No. 2562852 Japanese Utility Model Publication No. 4-5262

  However, the conventional device moves the slide cover back and forth along the guide rod, so that when the slide cover is not used, that is, the entire air outlet is opened. Even when the spraying operation is performed, the slide cover is exposed to the outside of the machine body. For this reason, when the body is run so as to sew under the branches of trees in the orchard, there is a problem that the slide cover is easily caught on the branches of the trees and the trees and fruit trees are easily damaged.

  Further, in the conventional device, the slide cover moves back and forth along the airframe. Therefore, from the viewpoint of preventing damage to the outer peripheral surface of the airframe, between the slide cover and the outer peripheral surface of the airframe. A predetermined gap was inevitably provided between them. For this reason, even if a part of the air outlet is closed by the slide cover, the wind leaks from the predetermined gap, and it cannot be said that the wind shielding effect is sufficient.

  In addition, in order to make the wind shielding effect sufficient, in Patent Document 3, it is also proposed that the front and rear end surfaces of the slide cover are folded back toward the air outlet, but the slide cover is mounted along the airframe. Since there is no change in moving back and forth, the predetermined gap is not completely removed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wind shield device that does not get in the way when not in use and can provide a good wind shield effect.

In order to solve the above-described problems, a windshield device for a speed sprayer according to the present invention includes a windshield cover that is displaceable so as to close the left and right vents formed in the airframe. The windshield cover includes a left-hand use position that closes at least a portion of the left vent, a right-use position that closes at least a portion of the right vent, and a lower portion of the fuselage. A storage position that extends in the left-right direction, and has a deformability that can be displaced, and the length in the displacement direction of the windshield cover is a length that can close each of the left air outlet and the right air outlet, and The housing is provided with a transmission connecting member for connecting the both ends of the windshield cover in the displacement direction to a length that can be accommodated within the left and right width of the body when stored in the lower part of the body (Claim 1).

According to the present invention, the windshield cover can be displaced to each use position and the storage position in a state where both ends thereof are connected to each other by the transmission connecting member. When the wind shield cover is in each of the use positions, it closes at least a part of each of the air outlets and blocks the air flow discharged therefrom. Meanwhile, the air shielding when not in use the cover, shielding style cover because it is retract and to stowed position extending horizontally along the bottom of the machine body, does not interfere when not in use. In addition, since the windshield cover is provided with a deformability that can be displaced to the use position and the storage position, the windshield cover and the fuselage have good adhesion, and the shield. Smooth displacement of the wind cover.

As a preferred embodiment, the wind pressure acting on the windshield cover from the inside of the airframe presses the edge of the windshield cover at each use position to the air outlet defining edge of the airframe. (Claim 3). In this way, the wind pressure that inevitably acts on the windshield cover further enhances the adhesion between the windshield cover and the airframe, which is preferable because the windshield effect is further improved.

As a preferred embodiment, the air outlet defining edge portion may also serve as a guide member for guiding the displacement of the windshield cover (Claim 3 ). In this way, the wind guide cover can be smoothly displaced by the guide action of the air outlet defining edge, and a single member performs a plurality of functions. is there.

As a preferred embodiment, the windshield cover can be displaced to the left side use position and the right side use position via the storage position (Claim 4 ). ).

The position change of the windshield cover can be performed manually. However, as a preferred embodiment, a driving source for displacing the windshield cover to the use position and the storage position is provided (Claim 5 ), and the displacement operation of the windshield cover is performed as described above. If the driving force of the driving source is used, it is preferable that the work for changing the position of the windshield cover can be saved labor.

As a form of preferred embodiment, the guide member for guiding the wind shielding cover it can be assumed that also serves as a guide member for guiding the transmission coupling member (claim 6). In this way, since one member performs a plurality of functions, it has a rational configuration and is preferable.

As a preferred embodiment, the control operation member of the drive source may be provided in a control section of the aircraft (Claim 7 ). In this way, since the position change control operation of the windshield cover can be performed from the control section, it is convenient for the operator of the aircraft, and the air blowing work is interrupted when the position of the windshield cover is changed. Therefore, the workability is not deteriorated, which is preferable.

As a preferred embodiment, an automatic stop mechanism that operates due to the displacement of the windshield cover and prevents the displacement of the windshield cover beyond the allowable displacement range may be provided. 8 ). In this way, since the displacement of the windshield cover to the outside of the allowable displacement range is automatically prevented, the position change control operation of the windshield cover by the operator is easy and suitable.

As a preferred embodiment, a position display means for displaying the position of the windshield cover may be provided in the control section of the airframe (Claim 9 ). This is suitable because the current position of the windshield cover can be confirmed by the control unit.

As a preferred embodiment, a nozzle cock that opens and closes each spray nozzle disposed at each of the air outlets is provided, and the nozzle cock is interlocked with a displacement operation of the windshield cover to each use position. Can be closed sequentially, and the nozzle cock can be opened sequentially in conjunction with the displacement operation of the windshield cover to the storage position (claim 10 ). In this way, since it is not necessary to perform the spray control operation from the spray nozzle separately from the position change operation of the windshield cover, there is a concern that the spray control operation from the spray nozzle may be forgotten. In addition, the operability is good and suitable.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

Figure 1 is a right side view of the scan peak dos player provided with a wind device shielding according to an embodiment of the present invention. The speed sprayer is a traveling type liquid spraying apparatus suitable for efficiently performing large-scale spraying of a control liquid or the like in an orchard or the like.

  In FIG. 1, a speed sprayer 1 according to the present embodiment is supported by a pair of left and right steering front wheels 3 and 3 and a pair of left and right driving rear wheels 4 and 4 so as to run freely. The speed sprayer 1 includes a steering unit 5 including a steering handle 5, various operation levers (not shown), a driver's seat 6 and the like, and a large-capacity tank for storing a spray liquid such as a chemical solution from the front to the rear. 8, the drive part 9, and the ventilation spray part 10 are equipped in order.

  The air spray unit 10 includes an air outlet 11 formed in an arc shape when viewed in the advancing direction F of the speed sprayer 1 as an airframe, and the upper and left and right sides of the speed sprayer 1 in the air outlet 11. A plurality of spray nozzles 12 arranged in an arc shape toward (L, R), an axial blower 13 as a means for creating an air flow for diffusing spray particles sprayed from the spray nozzle 12, A wind tunnel 15 that houses the axial blower 13 therein. When the axial blower 13 is rotationally driven, air is sucked from the air inlet 16 at the rear of the wind tunnel 15 and becomes a high-speed air current from the air outlet 11 above and to the left and right sides (L, R) is discharged radially. For this reason, the spray particles sprayed upward from each spray nozzle 12 and toward the left and right sides (L, R) of the speed sprayer are diffused more widely and farther toward the leaves of trees. I'm damned.

  The drive unit 9 includes, for example, an internal combustion engine 14 such as a gasoline engine or a diesel engine as a driving motor for driving. The internal combustion engine 14 includes a pair of left and right driving rear wheels 4, 4, a liquid spraying pump 17 that pumps the sprayed liquid in the tank 8 toward the spray nozzle 12, via a transmission device (not shown). The axial blower 13 is driven.

Next, with reference to FIGS. 2-7, will be described wind shielding device 18 according to an embodiment of implementation of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIGS. 4 and 5 are cross-sectional views showing a modification corresponding to FIG. FIG. 7 is an explanatory view showing a windshield cover position display means and a control operation member, and FIG.

  The wind shield device 18 is for blocking a part of the air outlet 11 as necessary, and blocking the ejection of airflow from the part of the air outlet 11. The spray from the spray nozzle 12 in the area closed by the wind shield cover 19 constituting the wind shield device 18 in the air outlet 11 is divided into nozzle tubes 20 each having a large number of the spray nozzles 12. Each spray nozzle 12 is automatically stopped by the liquid supply path control operation of the driver for each (see FIG. 2) or in conjunction with the displacement operation of the wind shield cover 19. Due to the partial stop of spraying and the wind-shielding action by the wind-shielding cover 19, it is possible to prevent scattering of the chemical solution or the like in a direction in which spraying is not desired.

  As shown in FIG. 2, in the wind shield device 18, the wind shield cover 19 slides up and down along the air outlet 11 to close a part of the air outlet 11 when in use A, It is possible to displace B and a retracted position C where the air outlet 11 is fully opened by retreating to the bottom of the vehicle body of the speed sprayer 1. In the present embodiment, the air outlet 11 includes a left air outlet 11a on the left side L in the traveling direction of the speed sprayer 1 and a right air outlet 11b on the right side R in the traveling direction of the speed sprayer 1. One windshield cover 19 passes through the lower part of the vehicle body of the speed sprayer 1, and a left-hand use position A that closes the left air outlet 11a; a right-hand use position B that closes the right air outlet 11b; Further, it can be displaced along an arcuate outer peripheral surface around the front-rear axis of the speed sprayer.

  The wind shield cover 19 is a belt-like cover having a front-rear width that can properly cover up to the left and right half of the air outlet 11 and a length in a displacement direction thereof, and extends along the outer peripheral surface of the speed sprayer 1. Deformability according to the displacement to the use position A, B and the storage position C is provided. That is, the windshield cover 19 is made of, for example, a large number of narrow and narrow plate-like members, such as a bath lid that can be rolled or folded, with flexibility at each joint, The plate-like members are formed by joining in the width direction. The windshield cover 19 can be formed of a material such as metal or plastic having strength necessary for windshield and good chemical resistance.

  The length of the wind shield cover 19 is such that each of the left air outlet 11a and the right air outlet 11b can be closed, and when the speed sprayer 1 is stored in the lower part of the vehicle body, The length can be within the width W. When the wind shield cover 19 is not used, the wind shield cover 19 is stored in the storage position C that is positioned along the lower surface of the vehicle body of the speed sprayer 1.

  The wind shield cover 19 does not necessarily need to be used so as to close all of the left air outlet 11a or the right air outlet 11b, and the lower side of the left air outlet 11a depending on the situation of the spraying place. Only a part or the lower part of the right air outlet 11b is closed, and the wind shield cover 19 is used with a part of the wind shield cover 19 positioned along the lower surface of the body of the speed sprayer 1 as shown in FIG. You can also.

  Next, the displacement guide structure and drive structure of the windshield cover 19 will be described.

  As is clear from FIG. 1 and FIG. 2, the front and rear edges of the air outlet 11 are defined along the upward arcuate outer peripheral surface of the speed sprayer 1 when the speed sprayer 1 is viewed from the front-rear direction. A pair of front and rear upward arc-shaped rail members 21 and 21 are fixed as the air outlet defining edge. The cross-sectional shape of the rear rail member 21 among the rail members 21 and 21 is bent at a right angle toward the front F of the speed sprayer 1, as shown in FIG. On the contrary, the cross-sectional shape of the front rail member 21 is bent at a right angle toward the rear of the speed sprayer 1.

  As shown in FIG. 2, the pair of front and rear rail members 21 and 21 are arranged on the inner side of the pair of front and rear rail members 21 and 21 along the outline of the rail members 21 with an appropriate space between them. A large number of guide rollers 22 are arranged as guide members for guiding the displacement of the windshield cover 19 together with the rail members 21 and 21. In FIG. 2, the rear rail member 21 and the plurality of guide rollers 22 on the rear side are shown, but the mutual relationship between the rail member 21 on the front side and the many guide rollers 22 on the front side is also This is almost the same.

  Each guide roller 22 is rotatable about a rotation axis extending in the front-rear direction of the speed sprayer 1. The windshield cover 19 has both front and back both sides of the front and rear edge portions 19a in contact with the bent portions 21a of the pair of front and rear rail members 21 and 21 and the plurality of guide rollers 22, respectively. While being guided by the guide roller 22, it slides along the inner peripheral surface of the bent portion 21 a of the pair of front and rear rail members 21, 21.

  As shown in FIG. 2, both end portions 19e, 19e in the displacement direction of the windshield cover 19 are connected to each other by a chain 23 as a transmission connecting member. The speed sprayer 1 includes an electric motor that can rotate forward and backward as a drive source for driving the chain 23 and displacing the windshield cover 19 to the use position A, B and the storage position C. 24 is arranged. For example, as shown in FIGS. 1 and 2, the electric motor 24 can be arranged at the center of the upper part of the speed sprayer 1 in the left-right direction. As shown in FIG. 2, a sprocket 25 as a transmission member is fixed to the output shaft of the electric motor 24. The sprocket 25 meshes with the chain 23 and transmits the driving force of the electric motor 24 in the forward / reverse direction to the chain 23.

  In the present embodiment, as shown in FIG. 3, the small diameter of the stepped guide roller 22 for guiding the windshield cover 19 by arranging the chain 23 inside the rear rail member 21. The chain 23 is guided by the portion 22a. In this way, since both the chain 23 and the windshield cover 19 are guided by a common member, a rational configuration is obtained. However, the present invention is not limited to this, and the following modifications may be employed.

  For example, as shown in FIGS. 4 and 5, guide rollers 26 and 27 are disposed on the windshield cover 19 side, and the guide rollers 26 and 27 are arranged on the roller rail formed on the rear rail member 21. Rollers 30 and 31 for guiding the chain 23 can be provided separately from the guide rollers 26 and 27 by rolling along the moving surfaces 28 and 29.

  Further, as shown in FIG. 5, the cross-sectional shape of the rear rail member 21 is changed from the example of FIGS. 3 and 4, and the inner and outer peripheral surfaces of the bent portion 21 b of the rear rail member 21 are changed. It is also possible to make the windshield cover 19 slidable along the rail member 21 so as to be sandwiched between the front and rear edges 19 b of the windshield cover 19 and the guide roller 27.

  The electric motor 24 operates using, for example, a battery 32 (see FIG. 1) mounted on the speed sprayer 1 and charged by the internal combustion engine 14 as a power source. As shown in FIG. 1, a switch lever 33 as a control operation member of the electric motor 24 is disposed in the control unit 7.

  As shown in FIG. 6, if position indicator lamps 34, 35, and 36 are provided as means for displaying the position of the windshield cover 19 on the control unit 7, the current position of the windshield cover 19 is operated. It is preferable that a person can know exactly at the driver's seat 6.

  The position display lamps 34, 35, 36 are automatically controlled to be turned on by a signal from a contact type or non-contact type detection means that operates due to the displacement operation of the windshield cover 19, for example. Can be. For example, when the switch lever 33 is in the center neutral position, the windshield cover 19 is in the storage position C along the lower surface of the vehicle body of the speed sprayer 1, and the lower storage is correspondingly performed. The hour position display lamp 34 is lit. When the driver tilts the switch lever 33 from the neutral position to the left L, the windshield cover 19 is displaced from the stored position C to the left use position A that covers the left vent 11a. Thus, the left-side use position display lamp 35 is turned on. Conversely, when the driver tilts the switch lever 33 from the neutral position to the right R, the windshield cover 19 moves from the stored position C to the right use position B that covers the right vent 11b. The right-side use position display lamp 36 is lit.

  Further, as shown in FIG. 2, an automatic stop mechanism 37 that operates due to the displacement of the windshield cover 19 and prevents the displacement of the windshield cover 19 beyond the allowable displacement range may be provided. As the automatic stop mechanism 37, for example, when the windshield cover 19 reaches the predetermined left-hand use position A or the right-hand use position B, the limit that operates by contacting the windshield cover 19 respectively. Contact type detection means such as a switch 38 and non-contact type detection means such as an optical sensor may be provided, and the operation of the electric motor 24 may be stopped by a signal from these detection means.

  Further, as shown in FIG. 7, a nozzle cock 39 for opening and closing each spray nozzle 12 disposed in the air outlet 11 is provided, so that the windshield cover 19 is displaced to the use positions A and B. In conjunction with this, the nozzle cocks 39 of the spray nozzles 12 to be covered by the windshield cover 19 are sequentially closed, and the windshield cover 19 is moved to the storage position C in conjunction with the displacement operation. The nozzle cock 39 can be opened sequentially. In the example of FIG. 7, cock lever drive claws 41 that contact the cock levers 40 of the respective nozzle cocks 39 to open and close the spray nozzles 12 are provided at the both end portions 19 e of the windshield cover 19. . In this case, since it is not necessary to separately perform the spray control operation from the spray nozzle 12 as an operation different from the position change operation of the windshield cover 19, control of the spray from the spray nozzle 12 is performed. In addition to not worrying about forgetting to operate, the operability is good, which is preferable.

  In the above configuration, when the windshield cover 19 is displaced to the use positions A and B, the liquid supply to the spray nozzle 12 in the region covered with the windshield cover 19 is also automatically stopped. . For this reason, neither spraying nor blowing is performed outside the windshield cover 19. On the other hand, spraying from the spray nozzle 12 and discharging of high-speed air current are performed from the open port portion 42 (see FIG. 2) that is not covered with the windshield cover 19 among the discharge ports 11. Therefore, by closing the discharge port 11 in a direction where it is not desired to spray, the wind shield cover 19 can prevent spraying in an unnecessary direction and scattering of the chemical solution.

  As shown in FIG. 2, in the present embodiment, since the wind shielding cover 19 is disposed inside the front and rear rail members 21, 21, the force of the high-speed air flow created by the axial flow fan 13 is used. As a result, the front and rear edge portions 19a and 19a of the windshield cover 19 at the use positions A and B are brought into close contact with the front and rear rail members 21 and 21, respectively. For this reason, there is no air leakage from between the front and rear edge portions 19a, 19a of the windshield cover 19 and the front and rear rail members 21, 21, and the windshield effect by the windshield cover 19 is good. Become.

  The high-speed air flow blocked by the wind shield cover 19 from flowing outward flows along the inner surface of the wind shield cover 19 and is jetted outward at a high speed from the upper end portion 19e side of the wind shield cover 19. This jet of airflow becomes an air curtain, effectively preventing the spray particles discharged into the atmosphere from the opening 42 from floating and moving to the side covered with the windbreak cover 19. To prevent. In this embodiment, since the sealing effect of the discharge port 11 by the wind shield cover 19 is great, the screen effect by the air curtain is also ensured.

  Further, in the present embodiment, since the wind shield cover 19 is displaced up and down along the air outlet 11, the vertical angle of the wind shield region can be selected by arbitrarily selecting the stop position of the wind shield cover 19. The range can be set to any size according to the situation at the work site.

Is a right side view of the scan peak dos player provided with a wind device shielding according to an embodiment of the present invention. It is an II-II arrow line view of FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. It is sectional drawing which shows the modification corresponding to FIG. It is sectional drawing which shows the other modification corresponding to FIG. It is explanatory drawing which shows the position display means and control operation member of a windshield cover. It is an enlarged view of the VII arrow part of FIG.

Explanation of symbols

1 Aircraft (Speed Sprayer)
7 Control part 11a Left air outlet 11b Right air outlet 12 Spray nozzle 19 Wind shielding cover 19a Edge part 19e, 19e of wind shielding cover
22 Guide member (guide roller)
23 Transmission connecting member (chain)
24 Drive source (electric motor)
33 Control operation member of the drive source (switch lever)
34, 35, 36 Position display means 37 Automatic stop mechanism 39 Nozzle cock A, B In-use position C In-housing position F Machine direction W W

Claims (10)

A speed spray windbreak device including a windshield cover (19) that is displaceable so as to close a left air outlet (11a) and a right air outlet (11b) formed in an airframe (1). The wind cover (19) includes a left-hand use position (A) that closes at least a portion of the left vent (11a), and a right-use position (B) that closes at least a portion of the right vent (11b). And a retractable position (C) extending in the left-right direction along the lower part of the fuselage (1), and the length of the wind-shielding cover (19) in the displacement direction is set to the left-side discharge. A length that can close each of the air outlet (A) and the right air outlet (B), and a length that can be accommodated within the left-right width (W) of the airframe (1) when stored in the lower part of the airframe (1). And both ends (19e) in the displacement direction of the windshield cover (19). The 19e) comprises transmission coupling member (23) connecting to each other, the wind device shielding for speed sprayer. By wind pressure acting on the the inner wind shielding cover (1 9) of the machine body (1), each used for position (A, B) the air shielding edge of the cover (1 9) in (19a) is the characterized in that it is pressed against the吐風mouth image Naruen portion (2 1) of the fuselage (1), wind shielding device for speed sprayer of claim 1. The wind shield device for a speed sprayer according to claim 2 , wherein the air outlet defining edge (21 ) also serves as a guide member for guiding the displacement of the wind shield cover ( 19) . The windshield cover (19) is displaceable to the left-hand use position (A) and the right-hand use position (B) via the storage position (C) . 4. A windshield device for a speed sprayer according to 2 or 3 . The wind shielding cover (19) of the respective use for position (A, B) and the storage time of the position (C) and a drive source allowed to displacement and a (24), any one of claims 1 to 4 A wind shield device for a speed sprayer as described in 1. The speed sprayer according to any one of claims 1 to 5 , wherein the guide member (22) for guiding the wind shielding cover (19) also serves as a guide member for guiding the transmission connecting member (23) . Wind shield device. The speed sprayer wind-shielding device according to claim 5 , wherein the control operation member (33) of the drive source (24) is provided in a control section (7) of the airframe (1). The automatic stop mechanism (37) according to claim 5 , further comprising an automatic stop mechanism (37) that operates due to the displacement of the windshield cover (19) and prevents the displacement of the windshield cover (19) exceeding an allowable displacement range. Wind shield for speed sprayer . The steering portion of the fuselage (1) (7), wherein the air shielding and a covering position display means for displaying the position of (19) (34, 35, 36), any one of claims 1 to 8 A wind shield device for a speed sprayer as described in 1. A nozzle cock (39) for opening and closing each spray nozzle (12) disposed at each of the air outlets (11a, 11b) is provided, and the wind shielding cover (19) to each of the use positions (A, B) is provided. The nozzle cock (39) is sequentially closed in conjunction with the displacement operation of), and the nozzle cock (39) is sequentially interlocked with the displacement operation of the wind shield cover (19) to the storage position (C). The windshield device for a speed sprayer according to any one of claims 1 to 9 , wherein the windshield device is opened.

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