JPH072063Y2 - Self-propelled sprayer - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled spreader vehicle used for spraying chemicals in a field, and more particularly to a self-propelled spreader vehicle in which a blower can be omitted.

[0002]

2. Description of the Related Art In a speed sprayer for spraying chemicals in a field, the wind from a blower is used to convey the spray from a nozzle, and the leaves of a tree as an object to be sprayed are shaken so that the chemicals are generally spread over the leaves. The blower is indispensable. The blower consumes a large amount of energy for operation and also serves as a noise source. If it can be omitted, it is preferable.

On the other hand, according to Japanese Utility Model Publication No. 43-5576, the swing arm is attached to the nozzle at the upper end thereof, and is joined to the crank at the lower end to rotate the crank, thereby performing the chemical spraying operation. , It is disclosed that the direction of the nozzle is variously changed. In this spraying device, the spraying angle of the chemical agent can be variously changed to allow the chemical agent to adhere to the entire leaf without shaking the leaf of the tree by the wind from the blower.

[0004]

[Problems to be solved by the device] Jitsuko Sho 43-5576
In the spraying device of the publication, it is possible to simultaneously swing one nozzle or a plurality of nozzles within a narrow angular range in the circumferential direction, but a large number of nozzles arranged over a wide angular range are commonly driven. It is difficult to move with the device. Further, in this spraying device, it is not possible to change the spraying angle of the spray by rotating the nozzle while maintaining the inclination angle of the center line of the nozzle with respect to a predetermined straight line, and the change of the spraying angle is small.

It is an object of the invention of claim 1 to spray the spray on the object to be scattered while omitting the blower, and to dispose a plurality of sprays arranged in a relatively wide angular range in the circumferential direction. An object of the present invention is to provide a self-propelled spreading vehicle in which the nozzles can be simultaneously swung by a common front-back drive device and a common circumferential drive device to simplify the structure. It is an object of the invention of claim 2 to provide a self-propelled spraying vehicle capable of achieving the necking movements of a plurality of nozzles by a common rotary drive device so that the spraying angle can be further varied. Is.

[0006]

The present invention will be described with reference to the reference numerals of the drawings corresponding to the embodiments. The self-propelled spraying vehicle (10) which is the premise of claim 1 includes a spray discharge portion (20) opening toward the surroundings. The self-propelled spraying vehicle (10) according to claim 1 has the following components (a) to (d). (A) A vehicle body that is disposed in the spray discharge part (20) and is swingable in the circumferential direction of the spray discharge part (20) and in the front-back direction of the self-propelled spreader vehicle (10).
Nozzle support frame (40) supported by (24) (b) A plurality of nozzles (22) (c) spraying work arranged in the circumferential direction of the spray discharge part (20) and attached to the nozzle support frame (40) Inside, the front-back direction drive device (36) for swinging the nozzle support frame (40) in the front-back direction of the spray of the self-propelled spraying vehicle (10) (d) During the spraying work, the nozzle support frame (40) is moved to the spray discharge part (20). ) Circumferential drive device (46) that swings in the circumferential direction

In the self-propelled spreading vehicle (10) according to claim 2, each nozzle is
The shaft part (78) of (22) is supported by the nozzle support frame (40) via the universal bearing (80), and the axis of the shaft part (78) is tilted with respect to the center line of the universal bearing (80) during the spraying work. The shaft part (7
A rotating means (58) for rotating the base end portion of (8) is provided for each nozzle (22). The rotating means (58) receives rotational power from the common rotary drive device (50) via the endless member (56).

[0008]

According to the first aspect of the present invention, during the spraying operation, the nozzle support frame (40) is sprayed by the front-rear drive unit (36) and the circumferential drive unit (46) in the front-rear direction and the spray of the self-propelled spraying vehicle (10), respectively. The discharge part (20) is swung in the circumferential direction. As a result, the plurality of nozzles (22) attached to the common nozzle support frame (40) move integrally with the nozzle support frame (40) to move in the front-rear direction of the self-propelled spraying vehicle (10). Spray emission part (20)
Swings in the circumferential direction. As a result, the spraying direction of the spray from the nozzle (22) also swings in the front-back direction of the self-propelled spraying vehicle (10) and the circumferential direction of the spray discharge part (20), and the sprayed target sprays the spray at various angles. Sprayed from.

In the invention of claim 2, each rotating means (58) is
Rotational power is transmitted from the common rotation drive device (50) through the endless member (56), and the base end portion of the shaft portion (78) of each nozzle (22) is rotated. As a result, the nozzle (22) rotates while the axis of the shaft portion (78) keeps the inclination with respect to the center line of the universal bearing (80), so that each nozzle (22) performs a turning motion, and the nozzle (22) rotates. The spraying angle of the spray on the object to be sprayed changes.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will be described below with reference to the embodiments of the drawings. FIG. 8 is a schematic side view of the self-propelled spreading vehicle 10. The self-propelled spraying vehicle 10 can be self-propelled by front, rear, left and right tires 12, has a driver's seat 14, a chemical tank 16, an engine section 18 and a spray discharge section 20 in order from the front to the rear, and has a normal speed sprayer. The blower equipped in is omitted. The spray discharge unit 20 is open not only at the rear but also at the left and right sides and above, and the plurality of nozzles 22 are provided.
Are arranged in the spray emitting portion 20 in a circumferential arrangement of the spray emitting portions 20 so as to be directed outward in the radial direction.

1 and 2 are detailed views of a left half portion and a right half portion of the spray discharge portion 20. The spray discharge part 20 has a substantially symmetrical structure in the left and right, and the vehicle body or a pair of main frames 24 as the vehicle body extend in parallel in the front-rear direction. The cradle 26 is
It extends in the left-right direction and is connected to the main frame 24 at both ends.

FIG. 3 shows a self-propelled spraying vehicle 10 below the spray discharge section 20.
FIG. 4 is a side view of FIG. 4, and FIG. 4 is a view on arrow V4 of FIG. The left and right beams 28 are fixed to the upper surface of the pedestal 26, respectively, at the rear end portion and the front end portion. The two pillars 30 extend vertically
The bracket 32 is fixed at the lower end. The bracket 32 is connected to the front end portion and the rear end portion of each of the left and right beams 28 via a vertical pin 34, and is rotatable about the axis of the pin 34. Electric cylinder for swinging back and forth 36
Has a projecting rod 38 and is arranged in a horizontal plane,
The beam 28 is rotatably connected to the end of the beam 28 on the pedestal 26 side and the bracket 32. The bracket 32 swings around the pin 34 as the amount of protrusion of the rod 38 in the front-back swing electric cylinder 36 increases or decreases. The pair of limit switches 39 are
The bracket 32 is fixedly mounted, and comes into contact with both ends of the bracket 32 as the bracket 32 swings, and is turned on and off. That is, as the protrusion amount of the rod 38 increases, the left and right brackets 32 swing in one direction, and the left bracket 32 comes into contact with one of the limit switches 39. When the protrusion amount of the rod 38 of the front-back swing electric cylinder 36 is switched from increase to decrease, then the left and right brackets 32 swing in the other direction, and the left bracket 32 comes into contact with the other limit switch 39, A control unit (not shown) switches the protrusion amount of the rod 38 of the left and right electric cylinders 36 for swinging back and forth from decrease to increase. Thus, the post 30 continues its rocking motion about the pin 34.

In FIGS. 1 and 2, the fan-shaped left and right nozzle support frames 40 are symmetrically arranged with respect to the horizontal center line of the spray discharge portion 20, and the pin 44 in the front-rear direction is provided at the apex portion 44.
It is rotatably connected to the upper end of each column 30 about 42.
The plurality of nozzles 22 are attached to the nozzle support frame 40 in an array at appropriate intervals in the circumferential direction of the spray discharge unit 20.
In addition, the range (pin 42
The distance between the nozzles 22 may be made narrower in a range of about 45 ° downward from the vertical line). The electric cylinder 46 for swinging in the circumferential direction has a projecting rod 48, is arranged in the vertical plane, and is rotatably coupled to the top portion 44 and the lower end portion of the column 30 at the upper and lower ends. Electric cylinder for circumferential swing
The support frame 40 for each nozzle swings around the pin 42 in the circumferential direction of the spray discharge portion 20 due to the increase or decrease in the amount of protrusion of the rod 48 at 46. The electric motor 50 is fixed to the lower radial portion of the support frame 40 for each nozzle, and has a drive sprocket 52 attached thereto. The driven sprocket 54 is provided corresponding to each nozzle 22, and the chain 56 is commonly mounted on one driving sprocket 52 and a plurality of driven sprockets 54, and the rotational power of the driving sprocket 52 is driven by each driven sprocket 52. Transmission to sprocket 54.

FIG. 5 is a detailed view of the nozzle 22 and its rotating means 58. In the rotating means 58, the rotating shaft 60 is integrally and rotationally connected to the driven sprocket 54, and the ball bearing 64
Is inserted into the bearing case 62 and rotatably supports the rotary shaft 60 on the bearing case 62. Oil seal 66
Is fitted into the bearing case 62 outside the ball bearing 64 to prevent the lubricant of the ball bearing 64 from leaking from the bearing case 62. The bearing case 62 is fixed to the inner arc portion 68 (FIGS. 1 and 2) of the nozzle support frame 40. The head 70 is fixed to the tip of the rotary shaft 60, and the arm 72 is fixed to the tip of the head 70 at the base end and projects in the direction perpendicular to the axis of the rotary shaft 60. The stay 74 is rotatably coupled to the tip of the arm 72 via a ball joint 76 on the base end side,
It is fixed to the base end of the pipe part 78 of the nozzle 22 on the tip side. The center of the ball joint 76 is located at a distance L from the center line of the rotating shaft 60. The universal bearing 80 is attached to the tip of the nozzle 22.

FIG. 6 is a vertical sectional view of the universal bearing 80, and FIG. 7 is a view of the universal bearing 80 as viewed from the tip side of the nozzle 22. The pair of hemispheres 82 are fitted to the pipe portion 78 from both sides on the inner peripheral side, and the cases 84 and 86 are fitted on the outer peripheral side. Two
The individual bolts 88 are inserted into the case 84 and then screwed into the case 86 to tighten the cases 84 and 86 to each other, whereby the pair of hemispheres 82 are appropriately pressed inward in the radial direction, and the pipe portion 78. Cling to. The pair of hemispheres 82 rotate integrally with the pipe portion 78, and rotate relative to the inner peripheral surfaces of the cases 84 and 86 on the outer peripheral surface side.

Returning to FIG. 5 , the case 8 of the universal bearing 80 is shown.
4, 86 are fixed to the outer arc portion 90 (FIG. 1) of the nozzle support frame 40 such that the axis of the pipe portion 78 of the nozzle 22 is inclined by θ ° with respect to the center line of the universal bearing 80. . With the rotation of the driven sprocket 54, the rotating means 58 rotates, and the center of the ball joint 76 rotates on an arc having a radius L from the center line of the rotating shaft 60. Since the base end side of the pipe portion 78 is rotated by the stay 74, the nozzle 22 rotates while the axis of the pipe portion 78 maintains the inclination of θ ° with respect to the center line of the universal bearing 80.

The operation of the embodiment will be described. During the spraying work, the limit switch 39 and the like cause the forward / backward swing electric cylinder 36 and the circumferential swing electric cylinder 46 to expand and contract at a predetermined cycle. As a result, the pillar 30 moves in the vertical pin 34 along with the expansion and contraction movement of the front-back swing electric cylinder 36.
The nozzle support frame 40 rotates around the pin 34 by rotating integrally with the pillar 30, and the nozzle 22 swings in the front-rear direction of the self-propelled spreading vehicle 10. Further, the nozzle support frame 40 rotates around the pin 42 in the front-rear direction along with the expansion and contraction motion of the electric cylinder 46 for swinging in the circumferential direction,
The nozzle 22 swings in the circumferential direction of the spray discharger 20. As a result, the spraying direction of the spray from the nozzle 22 also swings in the front-back direction of the self-propelled spraying vehicle 10 and the circumferential direction of the spray discharge part 20, and the sprayed object such as a tree leaf sprays the spray from various angles. Attached.

On the other hand, the rotational power of the electric motor 50 attached to each nozzle support frame 40 is driven by a drive sprocket.
It is transmitted to each driven sprocket 54 via 52 and the chain 56, and each rotating means 58 rotates the base end portion of the pipe portion 78 of the nozzle 22 via the stay 74. This allows the nozzle
The nozzle 22 rotates while the axis of the pipe portion 78 keeps the inclination of θ ° with respect to the center line of the universal bearing 80, so that each nozzle 22 performs a necking motion and sprays the object to be sprayed. The spray angle changes.

[0019]

According to the first aspect of the invention, a plurality of nozzles are mounted in a circumferential array on a nozzle support frame which is swingable in the front-rear direction of the self-propelled scatterer and in the circumferential direction of the spray discharge part. Since the nozzle support frame swings in the front-back direction of the self-propelled spraying vehicle and in the circumferential direction of the spray discharge part by the front-back direction drive device and the circumferential direction drive device, the nozzle support frame is arranged in a relatively wide angular range in the circumferential direction of the spray discharge part. The nozzle can be swung back and forth, up and down, and left and right by a common front and rear direction driving device and a common circumferential direction driving device. Therefore, it is possible to simplify the drive structure for swinging the plurality of nozzles all at once, and the objects to be sprayed such as the leaves of the tree are not shaken by the wind from the blower and can be moved from various directions. Since the spray can be sprayed, it is possible to omit the blower from the self-propelled sprayer.

According to the second aspect of the present invention, in each nozzle, the base end portion of the shaft portion is rotated by the rotating means while the axis line of the shaft portion maintains the inclination with respect to the center line of the universal bearing for supporting the shaft portion. Perform a neck rotation exercise. Therefore, the spray angle can be further varied, and the adhesiveness of the spray to the entire object to be sprayed is improved. Further, since each rotating means receives the rotary power from the common rotary drive device via the endless member, the drive structure for the nozzle turning movement is simplified.

[Brief description of drawings]

FIG. 1 is a detailed view of a left half portion of a spray discharge unit.

FIG. 2 is a detailed view of the right half of the spray discharge unit.

FIG. 3 is a view showing the lower part of the spray discharge unit from the side of the self-propelled spraying vehicle.

FIG. 4 is a view on arrow V4 in FIG.

FIG. 5 is a detailed view of a nozzle and its rotating means.

FIG. 6 is a vertical sectional view of a universal bearing.

FIG. 7 is a view of the universal bearing as viewed from the tip side of the nozzle.

FIG. 8 is a schematic side view of a self-propelled spreading vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Self-propelled spraying vehicle 20 Spray discharge part 22 Nozzle 36 Electric cylinder for front-back swing (front-back direction drive device) 40 Support frame for nozzle (nozzle support frame) 46 Electric cylinder for circumferential swing (circumferential drive device) 50 Electric motor (rotation) Drive device) 56 Chain (endless member) 58 Rotating means 78 Pipe part 80 Universal bearing

Claims (2)

[Scope of utility model registration request] 1. A spray discharge part (20) opening toward the periphery
In the self-propelled spreading vehicle (10), the spray discharge part (20)
A nozzle support frame (40) which is disposed inside and is swingably supported by the vehicle body (24) in the front-back direction of the self-propelled spraying vehicle (10) and in the circumferential direction of the spray discharge part (20), A plurality of nozzles (22) arranged in the circumferential direction of the spray discharge part (20) and attached to the nozzle support frame (40), and during the spraying operation, the nozzle support frame (40) is attached to the self-propelled spray vehicle ( (10) front-rear direction drive device (36) for swinging in the front-rear direction, and a circumferential drive device (46) for swinging the nozzle support frame (40) in the circumferential direction of the spray discharge part (20) during spraying work. ) And a self-propelled spreading vehicle. 2. A shaft bearing (78) of each nozzle (22) is a universal bearing.
(80) is supported by the nozzle support frame (40),
During the spraying operation, the rotating means (58) for rotating the base end portion of the shaft portion (78) while maintaining the inclination of the shaft portion (78) with respect to the center line of the universal bearing (80) includes the nozzles. (22) is provided for each, the rotating means (58) is a common rotary drive device (50)
The self-propelled spreading vehicle according to claim 1, wherein the self-propelled spreading vehicle receives rotational power from the endless member (56).