JP2006026490A - Chemical spraying mechanism for speed-sprayer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid reliably scattering of a chemical over areas for which the scattering is undesirable, e.g. houses and fields for fertilizer-free culture, and permit easy and low-cost avoidance of undesirable scattering with a simple structure. <P>SOLUTION: In configuring a chemical spraying mechanism 1 of a speed-sprayer M spraying a chemical D on a specified area A over the right-hand, left-hand and upward spraying directions, disposed are a shielding member 2 controlling spraying of the chemical D by shielding a partial area An(Ae) of the area A and a shifting means 3 positioning selectively the shielding member 2 at the service position Xs for shielding the partial area An(Ae) or the release position Xr releasing the shielding. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a chemical spraying mechanism for a speed sprayer that sprays a chemical in a predetermined radial range including the right side, the left side, and the upper side.

  Conventionally, a speed sprayer provided with a chemical spraying mechanism for spraying a chemical in a predetermined range in the radial direction is known from Japanese Patent Application Laid-Open No. 2000-4760.

In the speed sprayer disclosed in the publication, a main pipe for supplying a chemical solution is arranged on each of the left and right side surfaces of the vehicle body along the opening edge of the rectifying unit, and a plurality of movable branch pipes communicating with the main pipe are arranged on the axis of the vehicle. Disposed from the center of the flow path of the main pipe in the front-rear direction of the main body and arranged at predetermined intervals in the main pipe direction, each movable branch pipe is provided with a nozzle communicating with the main pipe, and the end of each movable branch pipe One end of the link arm is fixed to the other, the other end of the link arm of the adjacent movable branch pipe is linked by a link rod, and the axis is rotated by pushing the link rod and swinging the link arm. It is equipped with a drive mechanism that rotates the movable branch tube as the center, so that depending on the state of the spraying place, such as the edge of the field with fruit trees only on one side, the growing state (height state) of fruit trees, or sloping ground To change the injection direction of the chemical It is possible.
JP 2000-4760

  However, the above-described conventional speed sprayer (chemical solution spray mechanism) has the following problems to be solved.

  First, even if the injection direction of the chemical liquid is changed, it is not possible to reliably prevent the chemical liquid from being scattered in the direction in which the chemical liquid dispersion is desired to be avoided. Therefore, it is not possible to sufficiently avoid the scattering of chemicals to private houses and agricultural fields without agricultural chemicals.

  Secondly, in order to avoid the chemical solution splashing in a specific direction, it is possible to cope with the nozzle corresponding to the specific direction by providing an open / close valve. Therefore, a large avoidance means is disadvantageous in terms of cost effectiveness.

  An object of the present invention is to provide a chemical spray mechanism for a speed sprayer that solves the problems existing in the background art.

  In order to solve the above-described problem, the present invention provides a solution spray mechanism 1 of a speed sprayer M that sprays a solution D in a predetermined range A in the radial direction including the right side, the left side, and the upper side. A blocking member 2 that blocks the partial range An (Ae) and restricts spraying of the chemical solution D, and a use position Xs that blocks the blocking member 2 from the partial range An (Ae) or a non-use position that releases the blocking. It is characterized by comprising storage means 3 that is selectively positioned at Xr.

  In this case, according to a preferred aspect of the present invention, the blocking member 2 can be an integrally formed blocking plate 2p, and the inner surface of the blocking plate 2p is forward and / or protruded from the inner surface. Auxiliary blocking surfaces 2s and 2t for preventing the chemical solution D from scattering backward can be provided. On the other hand, the storage means 3 can be a guide rail mechanism 4 that supports the blocking member 2 in a slidable manner and selectively displaces it to the use position Xs or the non-use position Xr. The guide rail mechanism 4 can be provided with operation driving means 6 for displacing the blocking member 2 to the use position Xs or the non-use position Xr by the operation part 6s of the driver seat 5. On the other hand, the other storage means 3 includes a first attaching / detaching mechanism portion 7s for attaching / detaching the blocking member 2 to / from the use position Xs and a second attaching / detaching mechanism portion 7r for attaching / detaching the blocking member 2 to / from the non-use position Xr. Can be used. The first attaching / detaching mechanism portion 7s and the second attaching / detaching mechanism portion 7r can be configured by locking mechanism portions 7ss, 7rs and fixing mechanism portions 7sc, 7rc arranged at spaced positions, respectively. The second attaching / detaching mechanism 7r can be provided on the upper surface 8u of the wind tunnel cover 8 that covers the blower 9.

  According to the chemical spray mechanism 1 of the speed sprayer M according to the present invention having such a configuration, the following remarkable effects can be obtained.

  (1) Since the blocking member 2 blocks the partial range An (Ae) in the predetermined range A and regulates the spraying of the chemical solution D, the chemical solution scatters in the direction where it is desired to avoid the spraying of the chemical solution in a private house or an agrochemical-free field. It can prevent more reliably.

  (2) It is sufficient to provide a blocking member 2 for blocking a partial range An (Ae) in the predetermined range A and a storage means 3 for positioning the blocking member 2 at the use position Xs or the non-use position Xr. It can be implemented easily and at low cost.

  (3) According to a preferred embodiment, if the blocking plate 2p formed integrally as the blocking member 2 is used, a highly rigid blocking member that can sufficiently withstand the wind pressure can be easily obtained, and can be easily formed using only one metal panel material. This can contribute to further cost reduction.

  (4) According to a preferred embodiment, if the auxiliary blocking surfaces 2s and 2t are provided on the inner surface of the blocking plate 2p so as to prevent the chemical solution D from scattering forward and / or backward by protruding from the inner surface, Unnecessary chemical splashing to other workers or the like located on the driver's seat 5 side or behind can be prevented.

  (5) If the guide rail mechanism 4 that supports the blocking member 2 in a slidable manner and selectively displaces to the use position Xs or the non-use position Xr is used in the storage means 3 according to a preferred embodiment, the storage means 3 The blocking member 2 can be easily and reliably displaced with respect to the use position Xs or the non-use position Xr.

  (6) If the operation driving means 6 for displacing the blocking member 2 to the use position Xs or the non-use position Xr by the operation part 6s of the driver's seat 5 is provided in the guide rail mechanism part 4 according to a preferred embodiment, the speed sprayer M Even during the operation, the blocking member 2 can be displaced to the use position Xs or the non-use position Xr, and the work efficiency and convenience can be improved.

  (7) According to a preferred embodiment, the storage means 3 causes the first attaching / detaching mechanism portion 7s to attach / detach the blocking member 2 to / from the use position Xs, and the second attaching / detaching mechanism to attach / detach the blocking member 2 to / from the non-use position Xr. If the first attaching / detaching mechanism portion 7s and the second attaching / detaching mechanism portion 7r are configured by the locking mechanism portions 7ss, 7rs and the fixing mechanism portions 7sc, 7rc, respectively, which are spaced apart from each other, the configuration is simplified. As a result, the cost can be further reduced, and the use of small parts is sufficient, so that the troubles that obstruct them can be avoided.

  (9) By providing the second attaching / detaching mechanism portion 7r on the upper surface 8u of the wind tunnel cover 8 that covers the blower 9 according to a preferred aspect, the dead space can be effectively used as a storage place for the blocking member 2, and if necessary, The added value and the multi-functionality can be enhanced by using the blocking member 2 for a container or the like.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, in order to clarify the present invention, a schematic configuration of a speed sprayer M including the chemical spray mechanism 1 according to the present embodiment will be described with reference to FIG.

  In the speed sprayer M, reference numeral 10 denotes a chassis, which has a pair of left and right front wheels 11 on the front side of the chassis 10 and a pair of left and right rear wheels 12 on the rear side. On the other hand, the body 13 on the chassis 10 is provided with a driver's seat 5 at the front, and the front panel 14 in front of the driver's seat 5 is provided with necessary vehicle equipment such as lights such as headlights and a rearview mirror. . On the other hand, a chemical liquid tank 15 is provided behind the driver's seat 5, and a chemical liquid spray mechanism 1 according to the present embodiment is provided behind the chemical liquid tank 15.

  Next, the configuration of the chemical spray mechanism 1 according to the present embodiment will be specifically described with reference to FIGS.

  The chemical spray mechanism 1 includes a blower unit 16 having a blower 9 (see FIG. 4) covered with a wind tunnel cover 8 at the rear end of the body 13, and an injection between the blower unit 16 and the chemical solution tank 15. The injection space S includes a flow straightening cylinder 17 and a number of injection nozzles that do not appear in the drawing arranged along the flow straightening cylinder 17. Thereby, the chemical | medical solution D injected from an injection nozzle is sprayed from the injection space S by the ventilation from the ventilation part 16 to the predetermined range A (refer FIG. 4) of the radial direction including right side, left side, and upper direction. Reference numeral 18 denotes a suction hose connected to a water supply pump (jet pump).

  The chemical spray mechanism 1 includes a blocking member 2 that blocks a partial range An in the predetermined range A and restricts spraying of the chemical D, and uses the blocking member 2 at a use position Xs that blocks the partial range An. Alternatively, the storage means 3 is provided which is selectively positioned at the non-use position Xr for releasing the blocking. Since the illustrated blocking member 2 regulates spraying to the right of the speed sprayer M as a partial range An, a blocking plate that blocks a part around the injection space S so that the partial range An can be regulated. 2p is used. As shown in FIGS. 1 and 2, the blocking plate 2 p is formed in a shape that allows a part or all of a single strip-shaped metal panel material to follow the injection space S and shield the periphery. To do. By the way, since the wind pressure from the injection space S in the radial direction reaches a considerable level, the shielding plate 2p is required to have mechanical strength that can withstand this wind pressure. In the present embodiment, since the single blocking plate 2p formed integrally is used without the blocking member 2 having a combined configuration of a plurality of members, a highly rigid blocking member that can sufficiently withstand wind pressure can be easily obtained. For example, it can be easily formed with only one metal panel material, which contributes to cost reduction. In addition, 21 ... is the rib part for reinforcement bulged and formed in the several position of the interruption | blocking board 2p.

  Further, a pair of front and rear auxiliary plates 22s and 22t protruding in a direction perpendicular to the inner surface is fixed to the inner surface of the blocking plate 2p (see FIGS. 9 and 10). The auxiliary plates 22s and 22t are provided along the vertical direction of the blocking plate 2p. Thereby, each auxiliary plate 22s, 22t is located between the inner surface of the shielding plate 2p and the outer surface of the chemical solution tank 15 and the inner surface of the shielding plate 2p and the outer surface of the wind tunnel cover 8 when the shielding plate 2p is positioned at the use position Xs. The side of the driver's seat 5 that functions as auxiliary blocking surfaces 2s and 2t that closes the gap formed between them and prevents the chemical solution D hitting the inner surface of the blocking plate 2p from splashing forward and backward during chemical spraying. Or while preventing unnecessary chemical | medical solution dispersion | distribution with respect to the other worker who exists in the back, the further mechanical reinforcement with respect to the shielding board 2p can be aimed at. A handle 23 is attached to the rear auxiliary plate 22t.

  On the other hand, the storage means 3 is constituted by a guide rail mechanism section 4 that slidably supports the blocking plate 2p and selectively displaces to the use position Xs or the non-use position Xr. The guide rail mechanism section 4 includes a pair of upper and lower guide rails 27 and 28 that are installed in a horizontal direction via fixing brackets between the side surface of the chemical liquid tank 15 and the side surface of the wind tunnel cover 8 so as to straddle the injection space S. Also, a pair of upper and lower horizontal bearing sleeves 25 and 26 are fixed to positions on the inner surface of the shielding plate 2p that are spaced apart from each other, and the bearing sleeves 25 and 26 are slidable with respect to the guide rails 27 and 28. To load.

  Next, the usage method (function) of the chemical | medical solution spray mechanism 1 which concerns on this embodiment is demonstrated with reference to FIGS.

  First, when using the blocking plate 2p, by pushing the blocking plate 2p at the non-use position Xr indicated by the phantom line in FIG. 1 forward (rightward in the drawing) and moving along the guide rails 27 and 28, It is set at a use position Xs indicated by a solid line in FIG. In addition, when moving, the handle 23 can be utilized. Thereby, when spraying the chemical solution D, the right side of the speed sprayer M is blocked by the blocking plate 2p, so that the spraying of the chemical solution D on the partial range An is regulated as shown in FIG. Further, it is possible to more reliably prevent the chemical solution from being scattered in the direction in which the spraying of the chemical solution D in the agricultural field without agricultural chemicals is desired. Further, at this time, the auxiliary plates 22s and 22t are operated in front of each other in order to close gaps formed between the inner surface of the shielding plate 2p and the outer surface of the chemical liquid tank 15 and between the inner surface of the shielding plate 2p and the outer surface of the wind tunnel cover 8. Unnecessary chemical splashing to other workers on the side of the seat 5 or behind is prevented. In addition, since the single shield plate 2p formed integrally is used as the shield plate 2p, it can sufficiently withstand the strong wind pressure at this time.

  On the other hand, when the blocking plate 2p is not used, the blocking plate 2p at the use position Xs indicated by the solid line in FIG. 1 is pushed rearward and moved along the guide rails 27 and 28, so that the non-use position indicated by the phantom line Located at Xr. Thereby, the blocking plate 2p is stored in the non-use position Xr. Since the blocking plate 2p is located at the non-use position Xr, the entire range of the injection space S is opened without being blocked by the blocking plate 2p, and the chemical solution D is sprayed over the normal predetermined range A. . The blocking plates 2p at the use position Xs and the non-use position Xr are held by a stopper (not shown). As such a stopper, a simple stopper such as a lock pin or a known stopper such as a magnet can be used.

  Therefore, the chemical spray mechanism 1 according to the present embodiment includes the blocking plate 2p that blocks the partial range An in the predetermined range A and the guide rail mechanism unit 4 that positions the blocking plate 2p at the use position Xs or the non-use position Xr. It is sufficient if it is provided, and it can be implemented easily and at low cost with a simple configuration. In particular, since the blocking plate 2p formed integrally as the blocking member 2 is used, a highly rigid blocking member that can sufficiently withstand the wind pressure can be easily obtained, and can be easily formed by using only one metal panel material. This can contribute to cost reduction. Further, since the guide rail mechanism 4 is used as the storage means 3, the storage means 3 can be realized with a relatively simple configuration, and the blocking plate 2p is easily and reliably displaced with respect to the use position Xs or the non-use position Xr. Can be made. The method using the guide rail mechanism 4 shown in FIGS. 1 to 3 (the same applies to FIGS. 5 to 7) is applied to a relatively large speed sprayer M in which the blocking plate 2 is large and heavy. It is suitable for use.

  Next, the chemical spraying mechanism 1 according to various modified embodiments of the present invention will be described with reference to FIGS.

  The modified embodiment shown in FIGS. 5 and 6 is different from the embodiment of FIG. 1 in that the side of the chemical tank 15 is configured in a double structure, and the accommodating portion 31 for storing the blocking plate 2p is provided. The point that the shield plate 2p can be stored in the part 31, the point where the guide rails 27 and 28 are also arranged in the accommodating part 31, the drive cylinder (air cylinder, hydraulic cylinder or electric cylinder) 32 etc. The driving unit 33 is different in that it is moved. For this reason, the driver's seat 5 is provided with, for example, a changeover switch 34 that controls the control valve 33v provided in the drive unit 33 to move the blocking plate 2p to the use position Xs or the non-use position Xr. The changeover switch 34 constitutes an operation unit 6 s, and the changeover switch 34 and the drive unit 33 constitute an operation drive unit 6.

  Thus, even when the speed sprayer M is in operation, the switching switch 34 is switched and the drive unit 33 is controlled, so that the blocking plate 2p is positioned at the non-use position Xr indicated by the phantom line in FIG. Can be stored in the accommodating portion 31, and part of the injection space S can be blocked by projecting from the accommodating portion 31 and being located at the use position Xs indicated by the solid line in FIG. And convenience can be improved. Other configurations and functions are basically the same as those of the embodiment shown in FIG. Therefore, in FIGS. 5 and 6, the same parts as those in FIGS. 1 to 3 are denoted by the same reference numerals to clarify the configuration, and detailed description thereof is omitted.

  Further, the modified embodiment shown in FIG. 7 differs from the modified embodiments of FIGS. 5 and 6 in that a remote operation unit 35 is provided instead of the drive unit 33, and this remote operation unit 35 is an operation drive means. 6 is configured. The remote operation unit 35 moves the operation lever unit 36 (operation unit 6s) provided in the driver's seat 5, the operation wire 37 connecting the operation lever unit 36 and the blocking plate 2p, and the blocking plate 2p to the rear (use position Xs). It is constituted by springs 38 urging to the side).

  Thus, when the operation lever portion 36 is not operated, the blocking plate 2p is urged by the springs 38 to move to the use position Xs indicated by the solid line in FIG. 7 and moves the operation lever 36 in the direction of the arrow Fr (rearward). ), The operation wire 37 and the blocking plate 2p are pulled forward against the urging force of the springs 38, so that the blocking plate 2p is moved to the non-use position Xr indicated by the phantom line in FIG. Can be made. Therefore, the same effect as that of the modified embodiment of FIGS. 5 and 6 that the blocking plate 2p can be positioned at the use position Xs or the non-use position Xr even during the operation of the speed sprayer M can be obtained. In the seventh modified embodiment, since no power is used, there is an advantage that the configuration can be simplified and the cost can be reduced. Other configurations and functions are basically the same as those of the modified embodiment shown in FIGS. Therefore, in FIG. 7, the same parts as those in FIGS. 5 and 6 are denoted by the same reference numerals to clarify the configuration, and detailed description thereof is omitted.

  Further, the modified embodiment shown in FIGS. 8 to 12 is different from the embodiment shown in FIG. 1 in the storage means 3, and the first attaching / detaching mechanism for attaching / detaching the blocking plate 2p to / from the use position Xs. The point which is provided with the part 7s and the 2nd attachment / detachment mechanism part 7r which attaches / detaches the interruption | blocking member 2 with respect to the non-use position Xr differs from embodiment shown in FIG. Therefore, the shielding plate 2p used for the storage means 3 according to this modified embodiment is different from the shielding plate 2p in FIG. 1 in that there are no bearing sleeves 25 and 26, and the shapes of the auxiliary plates 22s and 22t are different. Basically, the same shielding plate 2p can be used except that the handle 23 is provided on the outer surface of the shielding plate 2p.

  In the storage means 3 according to the modified embodiment, the first attaching / detaching mechanism portion 7s includes a locking mechanism portion 7ss arranged on one side and a fixing mechanism portion 7sc arranged on the other side, as shown in FIGS. To do. The locking mechanism portion 7ss includes a pair of L-shaped hook portions 41 attached to the outer surface of the chemical liquid tank 15 and the outer surface of the wind tunnel cover 8 via fixing brackets, as shown in the enlarged view of FIG. 8 and FIG. 42 and locking hole portions 44 and 45 formed in the locking plate 43 fixed to the inner surface of the blocking plate 2p. In this case, the tips of the L-shaped hook portions 41 and 42 are upward. Further, as shown in FIG. 9, the fixing mechanism portion 7sc includes an I-shaped pin portion 46 attached to another position on the outer surface of the wind tunnel cover 8 via a fixing bracket, and a locking hole portion provided in the blocking plate 2p. 47 and a lynch pin 48. In this case, the I-shaped pin portion 46 includes a pin main body portion 46m, a locking flange portion 46f provided at an upper intermediate position of the pin main body portion 46m, and a pin main body positioned on the upper end side of the locking flange portion 46f. It has a lynch pin insertion hole 46h formed in the radial direction of the portion 46m and extending in the vertical direction. It has a combined ring 48r.

  Thus, when the blocking plate 2p is attached to the first attaching / detaching mechanism portion 7s, first, as shown in FIG. 8, the hook portions 41 and 42 are inserted into the locking holes 44 and 45 of the blocking plate 2p. Thereafter, as shown in FIG. 9, the I-shaped pin portion 46 is inserted into the locking hole portion 47 of the blocking plate 2p, and the linch pin 48 is inserted into the linch pin insertion hole 46h from above. It can be fixed (mounted) at the use position Xs. In this case, since the blocking plate 2p is not slid unlike the embodiment shown in FIG. 1, the auxiliary plates 22s and 22t are provided on the outer surface of the chemical tank 15 and the wind tunnel cover 8 on the inner side of the injection space S. It can be accommodated up to an inner position from the outer surface, and the chemical liquid D can be more reliably prevented from being scattered forward and backward. On the other hand, when detaching the blocking plate 2p from the first attaching / detaching mechanism portion 7s, an operation reverse to that at the time of mounting, that is, first, the lynching pin 48 is removed from the lynching pin insertion hole 46h, and the locking hole portion of the blocking plate 2p is removed. After the 47 is detached from the I-shaped pin portion 46, the locking holes 44 and 45 of the blocking plate 2p may be further detached from the hook portions 41 and 42.

  On the other hand, as shown in FIG. 12, the second attaching / detaching mechanism portion 7 r is configured by a locking mechanism portion 7 rs disposed on one side and a fixing mechanism portion 7 rc disposed on the other side, and the upper surface of the wind tunnel cover 8 covering the blower 9. 8u is provided. In this case, the basic configuration of the locking mechanism portion 7rs is the same as that of the locking mechanism portion 7ss, and the basic configuration of the fixing mechanism portion 7rc is the same as that of the fixing mechanism portion 7sc. Therefore, when attaching the blocking plate 2p to the second attaching / detaching mechanism portion 7r, first, the hook portions 41 and 42 of the locking mechanism portion 7rs are inserted into the locking hole portions 44 and 45 of the blocking plate 2p, and this Thereafter, the I-shaped pin portion 46 of the second attaching / detaching mechanism portion 7r may be inserted into the locking hole portion 47 of the blocking plate 2p, and the linch pin 48 may be inserted into the linch pin insertion hole 46h from above. Thereby, as shown in FIG. 12, the blocking plate 2p can be fixed (attached) to the upper surface 8u of the wind tunnel cover 8 which is at the non-use position Xr. In addition, what is necessary is just to perform reverse operation, when removing the shielding board 2p from the 2nd attachment / detachment mechanism part 7r.

  By the way, the auxiliary plates 22s and 22t provided on the blocking plate 2p have shown the case where a separately formed plate material is fixed by welding or the like, but as shown in FIG. 11, at one place or a plurality of places of one plate material. A bulge forming portion 51 bulged on the inner surface side may be provided by press molding or the like, and the standing surface portions 51s and 51t in the bulge forming portion 51 may be used as the auxiliary blocking surfaces 2s and 2t. Thus, the auxiliary plates 22s and 22t are not necessary. Moreover, since the recess 52 is formed in the blocking plate 2p by forming the bulge, it can be used as a container by attaching an openable cover (lid) or the like if necessary. Value and multifunction can be increased.

  According to the chemical solution spray mechanism 1 according to the modified embodiment shown in FIGS. 8 to 12, the first attaching / detaching mechanism portion 7 s that causes the storage means 3 to attach / detach the blocking member 2 to the use position Xs, and the blocking member. The second attaching / detaching mechanism portion 7r that attaches and detaches 2 to / from the non-use position Xr is used, and the first attaching / detaching mechanism portion 7s and the second attaching / detaching mechanism portion 7r are disposed at positions separated from each other. And the fixing mechanism portions 7sc and 7rc, the cost can be further reduced by the simplification of the configuration, and the use of small parts is sufficient, so that the troubles that obstruct them can be avoided. In addition, since the second attaching / detaching mechanism portion 7r is provided on the upper surface 8u of the wind tunnel cover 8 that covers the blower 9, it is possible to effectively use the dead space as a storage place for the blocking member 2, and the blocking member 2 can be used as a storage case if necessary. There is an advantage that it can be used to enhance added value and multi-functionality. 8 to 12 is suitable for use in a relatively small speed sprayer M in which the shielding plate 2 is small in size and light in weight.

  Although the best embodiment has been described in detail above, the present invention is not limited to such an embodiment, and departs from the gist of the present invention in the detailed configuration, shape, material, quantity, numerical value, and the like. It can be changed, added, or deleted as long as it is not.

  For example, in any of the embodiments, the blocking plate 2p is attached to the right side surface of the speed sprayer M to block a partial range An on the right side. However, the blocking plate 2p is attached to the left side surface of the speed sprayer M, As shown in FIG. 4, the partial range Ae on the left side can be cut off basically in the same manner except that the configuration is symmetrical. At this time, in the case of the embodiment using the guide rail mechanism portion 4, it is necessary to provide all the configurations of the guide rail mechanism portion 4 and the shielding plate 2p provided on the right side on the left side. In the embodiment using the attachment / detachment mechanism portions 7s and 7r, there is an advantage that a single blocking plate 2p can be used. Moreover, although the auxiliary | assistant interruption | blocking surfaces 2s and 2t showed the case where it provided in both the front side and rear side in the interruption | blocking board 2p, you may provide only in either the front side or the rear side.

The right view which shows the principal part of the chemical | medical solution spray mechanism which concerns on the best embodiment of this invention, A rear view showing the main part of the chemical spray mechanism, Right side view of a speed sprayer equipped with the chemical spray mechanism, Action explanatory diagram of the chemical spray mechanism, The right view which shows the principal part of the chemical | medical solution spray mechanism which concerns on the modified embodiment of this invention, A rear view showing the main part of the chemical spray mechanism, The right view which shows the principal part of the chemical | medical solution spray mechanism which concerns on other modified embodiment of this invention, The front view of the 1st attachment / detachment mechanism part containing the extraction enlarged view of the principal part of the chemical | medical solution spray mechanism which concerns on other modified embodiment of this invention, and a locking mechanism part, The top view seen from the diagonal direction of the fixed mechanism part in the chemical solution spray mechanism, Right side view showing the main part of the chemical spray mechanism, Plan sectional drawing which shows the example of a change of the shielding board in the chemical solution spray mechanism, Rear view of the second attachment / detachment mechanism part of the chemical spray mechanism,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chemical spray mechanism 2 Blocking member 2p Blocking board 2s Auxiliary blocking surface 2t Auxiliary blocking surface 3 Storage means 4 Guide rail mechanism part 5 Driver's seat 6 Operation drive means 6s Operation part 7s First attachment / detachment mechanism part 7r Second attachment / detachment mechanism part 7ss Stop mechanism part 7rs Locking mechanism part 7sc Fixing mechanism part 7rc Fixing mechanism part 8 Wind tunnel cover 8u Top face of the wind tunnel cover 9 Blower A Predetermined range An Partial range Ae Partial range D Chemical solution M Speed sprayer Xs Usage position Xr Non-use position

Claims (8)

  In a chemical spray mechanism of a speed sprayer that sprays a chemical solution in a radial range including the right side, the left side, and the upper side, a blocking member that blocks a partial range in the predetermined range and restricts the spraying of the chemical solution, and this blocking A chemical spray mechanism for a speed sprayer, comprising storage means for selectively positioning a member at a use position for blocking the partial range or a non-use position for releasing the block.   2. The chemical spraying mechanism for a speed sprayer according to claim 1, wherein an integrally formed blocking plate is used as the blocking member.   3. The chemical spraying mechanism for a speed sprayer according to claim 2, wherein the inner surface of the blocking plate has an auxiliary blocking surface that protrudes from the inner surface to prevent the chemical liquid from scattering forward and / or backward.   2. The chemical spray of a speed sprayer according to claim 1, wherein the storage means includes a guide rail mechanism that slidably supports the blocking member and selectively displaces the blocking member to the use position or the non-use position. mechanism.   5. The chemical spray mechanism for a speed sprayer according to claim 4, wherein the guide rail mechanism unit includes an operation driving unit that displaces the blocking member to the use position or the non-use position by an operation unit of a driver's seat.   The said storage means is equipped with the 1st attachment / detachment mechanism part which attaches / detaches the said interruption | blocking member with respect to the said use position, and the 2nd attachment / detachment mechanism part which attaches / detaches the said interruption | blocking member with respect to the said non-use position, It is characterized by the above-mentioned. 1. A chemical spray mechanism for a speed sprayer according to 1.   7. The chemical spraying mechanism for a speed sprayer according to claim 6, wherein each of the first attaching / detaching mechanism part and the second attaching / detaching mechanism part includes a locking mechanism part and a fixing mechanism part arranged at spaced apart positions.   The chemical spray mechanism for a speed sprayer according to claim 6, wherein the second attaching / detaching mechanism portion is provided on an upper surface of a wind tunnel cover that covers the blower.

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