JP2004275930A - Boom sprayer - Google Patents

Abstract

A liquid medicine can be sprayed on a side frame on a side where an obstacle is present, with a minimum required ground clearance that does not interfere with the obstacle.
A spraying device is provided at a front portion of a traveling body and a power spray device is provided at a rear portion. The spraying device extends in the left-right direction and can be raised and lowered substantially horizontally by lifting and lowering means. A boom, side booms attached to the left and right end portions of the center boom, which can be tilted up and down by tilting means, and a plurality of chemical liquid spray nozzles attached to these booms. In a boom sprayer in which the position can be freely changed between a use position in which the liquid medicine is sprayed by lying down substantially horizontally and a storage position in which it is flipped upward in an inclined manner, the side boom is raised in a substantially vertical plane. The position of use can be changed within a substantially vertical plane by making it freely tiltable.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a boom sprayer.
[0002]
[Prior art]
BACKGROUND ART Conventionally, as one form of a boom sprayer, there is a type in which a spraying device is disposed at a front portion of a traveling body and a power spray device is disposed at a rear portion (for example, see Patent Document 1).
[0003]
The spraying device extends in the left-right direction and can be raised and lowered substantially horizontally by the lifting and lowering means, and a side mounted on the left and right end portions of the center boom so as to be able to be raised and lowered by the lowering means. A boom and a plurality of nozzles for spraying a chemical solution attached to these booms are provided. The side boom is used in a position where the side boom is laid down substantially horizontally to spray the chemical solution, and the side boom is inclined upward and rearward. The position can be freely changed between the storage positions.
[0004]
[Patent Document 1]
JP-A-2002-45741
[0005]
[Problems to be solved by the invention]
However, in the above-described boom sprayer, the use position of the side boom is limited to a position where the side boom is laid down substantially horizontally, so that there is a slope on the side of the field, in the case of a rice terrace, or in the field. When there are obstacles to the side boom, such as when there is a protrusion, the center boom is raised to raise the side boom to a position where it does not interfere with the obstacle, and these There is a need to spray the chemical solution from a plurality of chemical solution spray nozzles attached to the boom.
[0006]
In this case, in order to raise the center boom, both the side booms attached to the left and right sides of the center boom, that is, both the side boom on the side where the obstacle exists and the side boom on the side where the obstacle does not exist are provided. Is raised, the height above the nozzles attached to these booms increases, and the chemicals sprayed from these nozzles are swept away by the wind, which may cause spray spots.
[0007]
In addition, there is a possibility that the chemical solution blown by the wind is applied to the operator.
[0008]
[Means for Solving the Problems]
Therefore, in the present invention, a dispersing device and a power spraying device are arranged on the traveling body, and the dispersing device extends in the left-right direction and can be raised and lowered substantially horizontally by an elevating means. Equipped with side booms attached to the left and right end portions, which can be tilted up and down by tilting means, and a plurality of nozzles for spraying a chemical solution attached to these booms, and the side booms are laid down substantially horizontally. In a boom sprayer in which the position can be freely changed between a use position in which a chemical solution is sprayed and a storage position in which the chemical solution is sprung upward in a rearward direction, the side boom can be turned up and down in a substantially vertical plane. A boom sprayer characterized in that a use position can be changed in a substantially vertical plane.
[0009]
In addition, the present invention is also characterized by the following configurations.
[0010]
(1) The center boom is coaxially connected to a fixed-side boom forming body fixed to the left and right ends of the fixed-side boom forming body and fixed to the left and right directions, and is rotatable around its axis. And a side boom attached to a side end of the rotating-side boom forming body is provided between the fixed-side boom forming body and the rotating-side boom forming body. In a state in which the side boom is raised and raised, the rotation range of the turning-side boom forming body is regulated between the substantially vertical upright position and the rearwardly inclined position of the side boom, and the substantially vertical upright position and the backwardly inclined position. A rotation range restricting / fixing means for fixing at any of the positions is provided.
[0011]
(2) The rotation range restricting / fixing means provides a fixed-side flange on the fixed-side boom forming body, provides a rotating-side flange on the rotating-side boom forming body, and joins the two flanges by bringing them into surface contact. A pivoting range boom is formed in one of the flanges, and a regulating pin is provided in the other flange, and the regulating pin is inserted into the pivoting range regulating elongate hole to rotate the boom. The rotation range of the formed body is restricted between the substantially vertical upright position and the rearwardly inclined position, and a fixing pin insertion hole for the substantially vertical upright position and the rearwardly inclined position is formed on one of the flanges, and the other is formed. A fixing pin is provided on the flange of the base so as to be able to advance and retreat, and the fixing pin is advanced and inserted into one of the fixing pin insertion holes so that the two flanges are fixed at either the substantially vertical standing position or the rearwardly inclined position. What you did.
[0012]
(3) An elevating means is interposed between the rotating-side boom forming body and the side boom.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0014]
That is, the boom sprayer according to the present invention has, as a basic structure, a dispersing device disposed at the front of the traveling body and a power spray device disposed at the rear, and the dispersing device extends in the left-right direction and moves up and down. A center boom that can be raised and lowered substantially horizontally by means, a side boom that is attached to the left and right ends of the center boom, and that can be raised and lowered by raising and lowering means, and a plurality of chemical solutions attached to these booms The side boom can be freely changed in position between a use position where the side boom is laid down substantially horizontally to spray a chemical solution and a storage position where the side boom is inclined upward and rearward.
[0015]
And as a characteristic structure, the side boom can be turned upside down in a substantially vertical plane, and the use position can be changed in the substantially vertical plane.
[0016]
That is, the center boom is coaxially connected to the fixed-side boom forming body fixed with the axis line oriented in the left-right direction and the left and right ends of the fixed-side boom forming body, and is rotatable around its axis. And a side boom attached to a side end of the rotating-side boom forming body, between the fixed-side boom forming body and the rotating-side boom forming body. In the state of flipping up and standing, the side boom regulates the turning range of the turning-side boom forming body between the substantially vertical upright position and the rearwardly inclined position, and the approximately vertical upright position and the rearwardly inclined position. A rotation range restricting / fixing means for fixing at any position is provided.
[0017]
And the rotation range regulating / fixing means, while providing the fixed side flange on the fixed side boom formation body, providing the rotation side flange on the rotation side boom formation body, and bringing both flanges into surface contact and joining, A turning range regulating long hole is formed in one of the flanges, and a regulating pin is provided in the other flange, and the regulating pin is inserted into the turning range regulating long hole to form a turning side boom. The rotation range of the body is restricted between the substantially vertical upright position and the rearwardly inclined position, and fixed pin insertion holes for the substantially vertical upright position and the rearwardly inclined position are formed in one of the flanges, and the other is formed. A fixing pin is provided on the flange so as to be able to move forward and backward, and the fixing pin is advanced and inserted into one of the fixing pin insertion holes so that both flanges are fixed at either the substantially vertical standing position or the rearwardly inclined position. ing.
[0018]
The raising / lowering means is interposed between the rotating-side boom forming body and the side boom.
[0019]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
A shown in FIGS. 1 and 2 is a boom sprayer A according to the present invention. The boom sprayer A has a spraying device 2 arranged at a front portion of a traveling body 1 and a power spray device 3 arranged at a rear portion. Has been established.
[0021]
As shown in FIGS. 1 and 2, the traveling body 1 is provided with a motor unit 5 at a front part on a body frame 4, an operating unit 6 is provided at a rear position of the motor unit 5, and a rear position of the operating unit 6 is provided. On the other hand, a pair of front wheels 9 and 9 is provided at a lower front portion of the body frame 4 via a front axle case 8 and a left and right front wheel 9 and 9 are provided at a lower rear portion of the body frame 4 via a rear axle case 10. A pair of rear wheels 11, 11 are provided.
[0022]
As shown in FIGS. 1 and 2, the body frame 4 includes a pair of left and right front and rear extension pieces 4 a, 4 a extending in the front and rear direction, and left and right extension pieces 4 b installed between the front ends of the front and rear extension pieces 4 a, 4 a. Is provided.
[0023]
As shown in FIGS. 1 and 2, the engine unit 5 has an engine E and the like mounted on a body frame 4, and the engine E and the like are covered with a bonnet 12.
[0024]
The driving section 6 has a dashboard 13 connected to the rear end of the hood 12, a handle post 14 erected in the dashboard 13, and an upper end of a handle support shaft 15 inserted into the handle post 14. The steering handle 16 is attached to the vehicle.
[0025]
A driver's seat 17 is provided at a position behind the steering handle 16. The driver's seat 17 is disposed in a driver's seat arrangement recess 18 formed in the front of the chemical solution tank 7. The chemical tank 7 also functions as a support for the driver's seat 17.
[0026]
As shown in FIGS. 1 and 2, the spraying device 2 attaches a boom body 21 to the body frame 4 via an elevating means 20, and disposes a large number of chemical solution spraying nozzles 22 on the boom body 21. The nozzles 22 are attached at regular intervals in the direction, and these nozzles 22 are connected to the power spray device 3 via a chemical liquid pipe 23.
[0027]
The elevating means 20 includes a pair of left and right elevating arms 24, 24 formed by extending in the front-rear direction as an elevating link mechanism at front portions of a pair of left and right front-rear extension pieces 4 a, 4 a forming a part of the body frame 4. While the ends are pivotally supported, connecting pieces 25 extending in the left-right direction are provided between the distal ends of the two lifting arms 24, 24, and the front portions of the respective lifting arms 24, 24 and the front and rear extending pieces 4a, 4a. The motorized lifting cylinders 27, 27 are interposed between the cylinder stays 26, 26 attached to the motor.
[0028]
In this way, the connecting piece 25 can be moved up and down at a position in front of the motor unit 5 via the two lifting arms 24, 24 by extending and retracting the two lifting cylinders 27, 27.
[0029]
As shown in FIG. 2, the boom body 21 extends in the left-right direction and is connected to the connection piece 25 of the lifting mechanism 20 so as to be able to move up and down substantially horizontally, and the left and right sides of the center boom 30. The front end is pivotally connected and connected to the end via the elevating shafts 58, 58 to extend rearward, and from a pair of left and right side booms 32, 32 which can be turned upside down by the elevating means 31. Has formed.
[0030]
As shown in FIGS. 2 and 3, the raising / lowering means 31 is provided at one end of a swing lever 50 pivotally supporting a middle part at the outer end of the center boom 30 and at the inner end of the side boom 32. A lifting cylinder 52 is interposed between the connecting bracket 51 and the connecting bracket 51, and a tension spring 54 is provided between the other end of the swing lever 50 and a spring connecting piece 53 provided in the middle of the center boom 30. Is interposed. 55 is a lever pivot, 56 is a cylinder pivot pin, and 57 is a spring locking pin.
[0031]
In this manner, by extending and retracting the tilting cylinder 52, the side boom 32 is laid down substantially horizontally and the chemical solution is sprayed, and the use position (a) (see FIG. 9) is inclined upward and backward. The position can be freely changed between a storage position (b) (see FIG. 11) which is raised along the side of the body.
[0032]
As shown in FIGS. 1 and 2, the power spraying device 3 extends rearwardly from a pair of left and right front and rear extension pieces 4 a, 4 a forming a part of the body frame 4 from rear ends thereof. The spray pump P is placed between the two extension pieces 4c, 4c, and the chemical solution in the chemical solution tank 7 is pumped through the chemical solution pipe 23 to the nozzles 22 by the spray pump P. A chemical solution can be sprayed from 22.
[0033]
In the above-described configuration, the gist of the present invention resides in that the side boom 32 can be turned upside down in a substantially vertical plane, and the use position (a) can be changed in the substantially vertical plane. .
[0034]
That is, as shown in FIGS. 3 and 4, the center boom 30 is coaxial with the fixed-side boom forming body 33 fixed with its axis directed in the left-right direction and the left and right ends of the fixed-side boom forming body 33. , And rotatable boom formers 34, 34 rotatable about the axis thereof, and between the fixed boom former 33 and the rotatable boom formers 34, 34. Is provided with rotation range regulating / fixing means 35.
[0035]
Here, the fixed-side boom forming body 33 and the rotating-side boom forming bodies 34, 34 are formed in a cylindrical shape having the same diameter, and are protruded outward from both ends of the fixed-side boom forming body 33. The fitting projections 36, 36 are respectively removably fitted to the inner ends of the rotating boom forming bodies 34, 34, and the rotating boom forming bodies 34, 34 are inserted through the fitting projections 36, 36, respectively. Is rotatable about its axis.
[0036]
Further, between the fixed-side boom forming body 33 and the rotating-side boom forming body 34, the tension spring 54 forming a part of the raising / lowering means 31 is provided as described above. The elastic biasing force prevents the turning-side boom forming body 34 from coming out of the fixed-side boom forming body 33 outward.
[0037]
As shown in FIGS. 3 to 6, the rotation range restricting / fixing means 35 is provided with a fixed side flange 37 at an outer end of the fixed side boom forming body 33, while an inner end of the rotating side boom forming body 34 is provided. A flange 38 is provided on the fixed flange 37 so that the flanges 37 and 38 are brought into surface contact with each other and joined to each other. 38, a restricting pin 40 is provided, and the restricting pin 40 is inserted into the turning range restricting elongated hole 39 to tilt the turning range of the turning-side boom forming body 34 to a substantially vertical standing position (a) and tilt backward. It is regulated between the position (b).
[0038]
Here, the rotation range regulating long hole 39 is formed in an arc shape along the rotation locus of the regulation pin 40, and the regulation pin 40 is smoothly moved along the rotation range regulating long hole 39. It can be slid.
[0039]
In the present embodiment, the rotation range regulating long hole 39 is formed in the fixed side flange 37 and the regulating pin 40 is provided in the movable side flange 38. However, the present invention is not limited to this. It is also possible to provide the restriction pin 40 on the fixed side flange 37 while forming the movement range restricting elongated hole 39.
[0040]
Further, fixing pin insertion holes 41 and 42 for a substantially vertical standing position and a rearwardly inclined position are respectively formed in the rotating side flange 38, and a fixing pin 43 is provided in the fixed side flange 37 so as to be able to advance and retreat. 43 is advanced and inserted into one of the fixing pin insertion holes 41, 42, and the flanges 37, 38 are fixed at either the substantially vertical standing position (a) or the rearwardly inclined position (b). I can do it.
[0041]
Here, the fixing pin 43 is disposed so as to be able to advance and retreat slidably in a cylindrical advance / retreat guide body 44 attached to the fixed side flange 37, and the one end opening 44 a of the advance / retreat guide body 44 is fixed to the fixed side flange 37. While the opening is made on the outer side surface, the base end of the fixing pin 43 is extended outward from the other end opening 44b of the movement retreating guide 44, and the fixing releasing operation body 45 is attached to the base end of the fixing pin 43. At the same time, the pressing spring 46 is wound around the outer peripheral surface of the stepped small diameter portion 43 a formed in the middle of the fixing pin 43, and the distal end 43 b of the fixing pin 43 is fixed to the fixed side flange by the elastic urging force of the pressing spring 46. 37 to project outward. Reference numeral 47 denotes a protrusion regulating piece of the fixing pin 43.
[0042]
Then, by pulling the fixing release operation body 45 against the elastic biasing force of the pressing spring 46, the distal end portion 43 b of the fixing pin 43 can be stored in the advance / retreat guide body 44.
[0043]
Further, the fixing pin insertion holes 41 and 42 are formed along the rotation locus of the fixing pin 43, and when the distal end 43 b of the fixing pin 43 matches one of the fixing pin insertion holes 41 and 42, It is advanced and inserted by the elastic urging force of the pressing spring 46.
[0044]
In this manner, since the use position (a) of the side boom 32 can be changed in a substantially vertical plane, when there is an obstacle to the side boom 32, for example, as shown in FIG. If the slope N exists on the side of the field G, only the side boom 32 on the side where the slope N exists is raised to a height that does not interfere with the slope N to change the use position (a). be able to.
[0045]
Therefore, the center boom 30 and the side boom 32 on the side where no obstacle is present can spray the chemical solution while maintaining the required height above the ground, and the side frame 32 on the side where the obstacle is present also has an obstacle. Since the chemical solution can be sprayed with the minimum ground clearance that does not interfere with the air, the occurrence of problems such as spraying of the chemical solution caused by the wind of the chemical solution and the occurrence of spray spots on the operator is minimized. can do.
[0046]
Here, as shown in FIGS. 10 and 11, when the position of the side boom 32 is changed between the substantially vertical standing position (a) and the rearwardly inclined position (b), the rotation range regulating / fixing means is used. By pulling the fixing release operation body 45 provided on the 35 against the elastic biasing force of the pressing spring 46, the distal end 43 b of the fixing pin 43 is stored in the advance / retreat guide 44, and the fixing pin insertion hole 41, By keeping the rotation-side boom formation 34 fixed to the state where the rotation-side boom formation 34 is removed from the rotation-side boom formation 34, the rotation-side boom formation 34 is rotated within the range of the rotation range regulating long hole 39. be able to.
[0047]
In addition, a regulating pin 40 protruding from the rotating flange 38 is inserted into the rotating range regulating long hole 39, and the regulating pin 40 contacts an end of the rotating range regulating long hole 39. The side boom 32 is moved rearward from the substantially vertical upright position (a) in order to restrict the rotation range of the rotating side boom forming body 34 between the substantially vertical upright position (a) and the rearward tilting position (b). When the position is changed to the tilting position (b), even if the operator slides his hand and the side boom 32 is separated from the hand, the rotation of the side boom 32 is restricted at the rearward tilting position (b). In addition, it is possible to prevent an accident in which the side boom 32 collides with the airframe or the operator, and as a result, the airframe or the operator can be protected.
[0048]
Further, when the swing-side lever 50 is turned around the axis of the swing-side boom forming body 34 in a direction in which the swinging lever 50 is in a substantially vertically upright state, as shown in FIG. The distal end portion 43b of the fixing pin 43 provided in the rotation range restricting / fixing means 35 advances and inserts into the fixing pin insertion hole 41 for the substantially vertical upright position by the elastic biasing force of the pressing spring 46. 43 allows the turning-side boom forming body 34 to be easily and reliably fixed to the fixed-side boom forming body 33.
[0049]
When the swing-side lever 50 is turned around the axis of the swing-side boom forming body 34 in the direction in which the swinging lever 50 is tilted rearward, as shown in FIG. The distal end portion 43b of the fixing pin 43 provided in the regulating / fixing means 35 advances and penetrates into the fixing pin insertion hole 42 for the rearwardly inclined position by the elastic biasing force of the pressing spring 46, and is rotated by the fixing pin 43. The side boom forming body 34 can be easily and securely fixed to the fixed side boom forming body 33, and the side boom 32 can be moved up and down by operating the raising / lowering cylinder 52 in the same state.
[0050]
As a result, the position of the side boom 32 can be smoothly and reliably changed between the use position (a) and the storage position (b).
[0051]
In the present embodiment, the rotation range regulating long hole 39 is formed in the fixed side flange 37, and the fixing pin 43 is provided so as to be able to move forward and backward. The fixed pin insertion holes 41 and 42 for the upright position and the rearwardly inclined position are respectively formed, but the present invention is not limited to this, and either one of the fixed side flange 37 and the turning side flange 38 is provided with a turning range regulating long hole. In addition to forming 39, a regulating pin 40 can be provided on the other flange, and fixing pin insertion holes 41 and 42 can be formed on one of the flanges, and a fixing pin 43 can be provided on the other flange.
[0052]
Further, in the present embodiment, since the raising / lowering means 31 is interposed between the rotating-side boom forming body 34 and the side boom 32, the rotating-side boom forming body 34 is When the is rotated, the raising / lowering means 31 does not hinder.
[0053]
In this embodiment, as shown in FIGS. 12 to 15, the chemical solution tank 7 has the following features.
[0054]
That is, recesses 60 for avoiding interference such as elbows are formed on the left and right upper portions of the driver seat disposing recess 18 formed in the chemical liquid tank 7.
[0055]
Here, when the operator sits on the driver's seat 17 arranged in the driver's seat arrangement concave portion 18 and performs a steering operation or the like, when the height of the chemical liquid tank 7 is increased to increase the internal volume, The operator's both elbows and the like may interfere with the side wall of the driver's seat arrangement concave portion 18. However, by forming the interference avoiding concave portions 60 and 60, the operator can easily operate the steering wheel and the like. Can be.
[0056]
A chemical solution inlet 62 is formed in the ceiling 61 of the chemical solution tank 7, and the upper surface of the portion of the ceiling 61 located around the chemical solution inlet 62 has a downwardly sloped rearward shape and a rearward slope. A plurality of discharge vertical grooves 64 extending in the vertical direction are formed on the wall 63 at intervals in the horizontal direction.
[0057]
In this way, when the chemical liquid is injected into the chemical liquid inlet 62, if the chemical liquid spills on the upper surface of the ceiling 61, the spilled chemical liquid moves downward and rearward along the upper surface of the inclined ceiling 61. And quickly descends along a plurality of discharge vertical grooves 64 formed in the rear wall 63.
[0058]
Therefore, it is possible to prevent the chemical solution from staying or remaining attached to the ceiling 61 or the like, and it is possible to reduce dirt on the surface of the chemical solution tank 7.
[0059]
In addition, the plurality of vertical grooves 64 for discharge function as ribs of the chemical liquid tank 7, and the rigidity of the chemical liquid tank 7 can be increased.
[0060]
Therefore, even when the chemical liquid tank 7 is filled with the chemical liquid, the deformation of the chemical liquid tank 7 can be prevented.
[0061]
Further, stay mounting recesses 65, 65 as stay mounting seats are formed on the left and right sides of the ceiling 61 of the chemical liquid tank 7.
[0062]
As shown in FIG. 1, FIG. 2, and FIGS. 16 to 18, a step 66 for getting on and off is vertically provided in a middle part of the longitudinally extending piece 4 a of the body frame 4. A pair of front and rear upper and lower extension pieces 66a, 66a and step pieces 66b, 66c extending in the front and rear direction are formed between the middle and lower ends of the upper and lower extension pieces 66a, 66a.
[0063]
A stay 67 is attached to the stay attachment recess 65 formed on the ceiling surface of the chemical liquid tank 7, and a handle 68 extending vertically is interposed between the stay 67 and the upper portion of the rear vertically extending piece 66a. are doing. 69 is a mounting bracket provided on the vertical extension piece 66a of the step 66 for getting on and off, 70 is a mounting piece provided on the lower end of the handle 68, and the mounting piece 70 is attached to the vertical extension piece via the mounting bracket 69. The mounting bolt 71 is attached to the mounting 66a. Reference numeral 72 denotes a U-shaped attachment piece attached to the upper end of the handle 68, and is attached to the stay 67 by the attachment bolt 73 via the U-shaped attachment piece 72.
[0064]
Since the handle 68 is provided in this way, getting on and off can be performed easily despite the relatively high height of the machine.
[0065]
At this time, a stay 67 for supporting the upper end of the handle 68 is attached to a stay attachment recess 65 formed on the side of the ceiling 61 of the chemical liquid tank 7, and the chemical liquid tank 7 has a driver seat as described above. Since the 17 is provided, the operator can easily get on and off the driver's seat 17 via the handle 68.
[0066]
【The invention's effect】
(1) According to the first aspect of the present invention, a spraying device and a power spraying device are arranged on a traveling body, and the spraying device extends in the left-right direction and can be raised and lowered substantially horizontally by a lifting / lowering means. And a side boom attached to the left and right ends of the center boom, which can be tilted up and down by tilting means, and a plurality of nozzles for spraying a chemical solution attached to these booms. In a boom sprayer that can change its position between a use position where it is laid down substantially horizontally and sprays a chemical solution, and a storage position where it is flipped up and tilted backward and upward, the side booms fall up and down in a substantially vertical plane The position of use can be freely changed within the substantially vertical plane.
[0067]
In this way, the use position of the side boom can be changed in a substantially vertical plane, so that there is a slope on the side of the field, in the case of a terraced rice field, or in the case where a projection exists in the field. In the case where there is an obstacle to the side boom, for example, the use position can be changed by raising only the side boom on the side where the obstacle exists to a height that does not interfere with the obstacle. .
[0068]
Therefore, the center boom and the side boom on which the obstacle does not exist can spray the chemical solution while maintaining the required height above the ground, and the side frame on the side where the obstacle exists does not interfere with the obstacle. Since the chemical solution can be sprayed with the minimum required ground clearance, the occurrence of malfunctions such as spraying of the chemical solution caused by the wind in the wind and the occurrence of spray spots and operator involvement should be minimized. Can be.
[0069]
(2) According to the second aspect of the present invention, the center boom is coaxially connected to the fixed-side boom forming body fixed with the axis directed in the left-right direction and the left and right ends of the fixed-side boom forming body. And a turning-side boom forming member rotatable around its axis, and a side of the turning-side boom forming member is provided between the fixed-side boom forming member and the turning-side boom forming member. In a state in which the side boom attached to the end is flipped up and raised, the rotation range of the rotation-side boom forming body is regulated between the substantially vertical upright position of the side boom and the rearwardly inclined position, and And a rotation range restricting / fixing means for fixing at any one of the substantially vertical standing position and the rearwardly inclined position.
[0070]
In this way, the turning side boom forming body is fixed to the substantially vertical upright position by the turning range restricting / fixing means, and the side boom is turned up and down by the turning means in the same state, so that the side boom is required. Can be reliably set at the use position.
[0071]
Then, the turning-side boom forming body is fixed to the rearwardly inclined position by the turning range restricting / fixing means, and the side boom is turned up and down by the elevating means in the same state, so that the side boom is moved to the use position and the storage position. And the position can be changed smoothly and reliably.
[0072]
In addition, when the side boom is repositioned between the substantially vertical standing position and the rearwardly inclined position, the rotation range of the rotation side boom forming body is regulated by the rotation range regulating / fixing means. Even when the operator slides his hand and the side boom moves away from his / her hand, the side boom is restricted from rotating at the rearwardly inclined position to prevent an accident that the side boom collides with the airframe or the operator. Can protect the fuselage and the operator.
[0073]
(3) According to the third aspect of the present invention, the rotation range restricting / fixing means provides the fixed-side boom forming body with the fixed-side flange and the turning-side boom formed body with the turning-side flange. The flanges are brought into surface contact with each other and joined together, and a rotation range restricting elongated hole is formed in one of the flanges, and a restricting pin is provided on the other flange. The boom-forming body is inserted into the flange to restrict the range of rotation of the rotating-side boom forming body between the substantially vertical upright position and the rearwardly inclined position. In addition to forming the insertion holes respectively, a fixing pin is provided on the other flange so as to be able to advance and retreat, and the fixing pin is advanced and inserted into one of the fixing pin insertion holes, and the two flanges are substantially vertically raised and the rearwardly inclined position. I will fix it in any position of It has to.
[0074]
In this manner, when fixing the turning-side boom forming body to the substantially vertical upright position, the fixing pin provided on the rotation range regulating / fixing means is advanced into the fixing pin insertion hole for the substantially vertical upright position. By inserting the fixed-side boom-forming member, the turning-side boom-forming member can be easily and reliably fixed to the fixed-side boom-forming member by the fixing pin.
[0075]
Then, when fixing the turning-side boom forming body to the rearward tilting position, the fixing pin provided in the rotation range restricting / fixing means is advanced and inserted into the fixing pin insertion hole for the rearward tilting position, The turning pin-shaped boom forming body can be easily and reliably fixed to the fixed-side boom by the fixing pin.
[0076]
Further, when the position of the side boom is changed between the substantially vertical standing position and the rearward tilting position, the fixing pin provided on the rotation range restricting / fixing means is retracted, and the side boom is removed from the fixing pin insertion hole. By doing so, the restricting pin inserted into the turning range restricting elongated hole restricts the turning range of the turning-side boom forming body between the substantially vertical upright position and the rearwardly inclined position. Even if the operator slides his hand and the side boom moves away from his / her hand, the side boom is restricted to rotate at the backward tilt position to prevent an accident that the side boom collides with the aircraft or the operator. And protect the aircraft and the operator.
[0077]
(4) According to the fourth aspect of the present invention, the raising / lowering means is interposed between the rotating-side boom forming body and the side boom.
[0078]
In this way, it is possible to prevent the raising / lowering means from hindering the rotation of the turning-side boom forming body with respect to the fixed-side boom forming body.
[Brief description of the drawings]
FIG. 1 is an explanatory side view of a boom sprayer according to the present invention.
FIG. 2 is a plan view of the boom sprayer.
FIG. 3 is a front view of a rotation range restricting / fixing unit.
FIG. 4 is a partially cutaway plan view of the rotation range restricting / fixing means.
FIG. 5 is a front view of a fixed side flange.
FIG. 6 is a front view of a rotation side flange.
FIG. 7 is a cross-sectional front view of a fixed-side flange at a substantially vertical upright position.
FIG. 8 is a cross-sectional front view of a fixed side flange at a rearwardly inclined position.
FIG. 9 is an explanatory front view of a use position of the boom body.
FIG. 10 is a side view of the boom body in a substantially vertical upright position.
FIG. 11 is a side view of the boom body at a rearward inclined position.
FIG. 12 is a side view of a chemical solution tank.
FIG. 13 is a front view of the chemical solution tank.
FIG. 14 is a plan view of the chemical solution tank.
FIG. 15 is a rear view of the chemical solution tank.
FIG. 16 is a front view of the handle.
FIG. 17 is a plan view of the handle.
FIG. 18 is a cross-sectional plan view of a mounting portion of the handle.
[Explanation of symbols]
A boom sprayer
1 traveling aircraft
2 Spraying device
3 Power spray device
4 Airframe
5 Engine unit
6 Operation section
7 Chemical tank
8 Front axle case
9 Front wheel
10 Rear axle case
11 Rear wheel

Claims (4)

Spreading device and power spray device are installed on the traveling aircraft,
The spraying device has a center boom that extends in the left-right direction and can be raised and lowered substantially horizontally by a lifting means, and a side boom that is attached to the left and right ends of the center boom and can be raised and lowered by the lifting means. Comprising a plurality of nozzles for spraying a chemical solution attached to these booms,
The side boom is a boom sprayer that can be freely changed in position between a use position where the side boom is laid down substantially horizontally to spray a chemical solution and a storage position where the side boom is flipped up and inclined upward and rearward.
A boom sprayer characterized in that the side boom can be tilted up and down in a substantially vertical plane so that a use position can be changed in the substantially vertical plane. The center boom is coaxially connected to the left and right ends of the fixed-side boom forming body and the fixed-side boom forming body fixed with the axis directed in the left-right direction, and is rotatable about its axis. And a rotating-side boom former.
Between the fixed-side boom forming body and the turning-side boom forming body, the side boom attached to the side end of the turning-side boom forming body is flipped up to stand up. A turning range restricting / fixing means for restricting the turning range of the turning-side boom forming body between the vertical upright position and the rearward tilting position, and fixing the turning range at one of the substantially vertical upright position and the rearward tilting position. The boom sprayer according to claim 1, wherein a boom sprayer is provided. The rotation range restricting / fixing means, while providing a fixed side flange on the fixed side boom forming body, providing a rotating side flange on the rotating side boom forming body, and bringing both flanges into surface contact and joining,
A turning range regulating long hole is formed in one of the flanges, and a regulating pin is provided in the other flange, and the regulating pin is inserted into the turning range regulating long hole to form a turning side boom. Restricting the range of rotation of the body between a substantially vertical standing position and a rearwardly inclined position,
A fixing pin insertion hole for a substantially vertical standing position and a rearward tilting position is formed on one of the flanges, and a fixing pin is provided on the other flange so as to be able to advance and retreat, and the fixing pin is inserted through one of the fixing pins. 3. The boom sprayer according to claim 2, wherein the flanges are advanced and inserted into the holes so that both flanges are fixed at one of a substantially vertical upright position and a rearwardly inclined position. The boom sprayer according to claim 2 or 3, wherein a raising / lowering means is provided between the rotating-side boom forming body and the side boom.

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