JP2001314792A - Motor vehicle for spraying - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of a dead space in the application of a liquid chemical at the corner of a ridge 38 inside the turning direction when a liquid chemical automatic spraying vehicle 10 enterss from an entrance mounding ground 36 to each passage between the ridges to turn. SOLUTION: A gear box 22 supports freely rotatably front wheels 12 at the left and right end parts and is jointed to a spreading car main body 11 freely rotatable around the vertical line with a hanging member 14. A front side extending plate 23 is fixed to the gear box 22 and extends to the front side of the spreading car main body 11. A support 24 is fixed to the front side extending plate 23 at the lower end and to a nozzle pipe 25 at the upper end. A nozzle 26 is arranged at a prescribed height of the nozzle pipe 25 and sprayss the liquid chemical toward the side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled spraying vehicle such as an automatic chemical spraying vehicle for spraying a chemical solution to a crop on a ridge in a house, and more particularly to a self-propelled spraying vehicle capable of suppressing unevenness in spraying. It is.

[0002]

2. Description of the Related Art FIG. 5 shows a state in which a conventional automatic dispensing vehicle 70 for a chemical liquid enters a ridge passage 39 from an entrance headland 36.
The blind spot area of the chemical solution spraying at the end of the ridge 38 is shown. The same elements as those of the embodiment of the present invention described later are designated by the same reference numerals, and the description thereof will be omitted, and only the main points will be described. In the conventional automatic chemical spraying vehicle 70, the nozzle pipe 25 to which the nozzle 26 is attached is fixed to the front side of the main body of the spraying vehicle. Therefore, the direction of each nozzle pipe 25 with respect to the spraying vehicle main body is fixed both when the automatic chemical solution spraying vehicle 70 is running straight and when turning. When the chemical liquid automatic spray vehicle 70 enters the ridge passage 39 from the entrance headland 36, the steering wheel is steered and the traveling direction is about 90 °.
change. Lines B1, B2, and B3 with arrows in FIG. 5 indicate the injection of the chemical liquid from the nozzle 26 toward the inside in the turning direction at the start of the turn, during the turn, and at the end of the turn. In FIG. 5, the direction of the nozzle 26 is the chemical liquid automatic spraying vehicle 10.
Is assumed to be 90 ° with respect to the center line of the spraying vehicle main body.
During the turning of the automatic chemical spraying car 70, the spray direction of the chemical from the nozzle 26 is maintained parallel to the left-right direction of the spraying car main body, but the nozzle 26 is larger in the front-back direction than the center of the spraying car main body. Due to the bias, an area without spraying or a small amount of spraying (hereinafter referred to as a “blind spot area A on spraying”) such as A shown by oblique lines in FIG. , It is necessary to perform manual spraying on the blind spot area A on the spray.

Japanese Patent Publication No. 5-45303 discloses a speed sprayer in which a jet head is rotatably supported about a vertical line and the jet head is rotated in accordance with a steering angle. Then, the speed sprayer rotates the jet head with respect to the vehicle body during turning, so that the liquid from the jet head is sprayed toward the center of the turning direction during turning,
This prevents the formation of a blind spot area for liquid spraying during turning. The spout swirl structure in the speed sprayer disclosed in Japanese Patent Publication No. 5-45303 is large and complicated,
It is difficult to apply to a small-sized automatic chemical solution spraying vehicle 70 as shown in FIG.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a self-propelled dispersing vehicle which can prevent dispersal unevenness caused by turning by a simple structure.

[0005]

SUMMARY OF THE INVENTION A self-propelled spreader according to the present invention.
(10) has the following. A steering swivel member (22) coupled to the spreader vehicle body (11) so as to be rotatable about a vertical swivel axis, and rotatably supported by left and right ends of the steering swivel member (22); Turning member for steering (2
2) The left and right steered wheels (12) whose steering angle is controlled by turning, the fixed member (23) fixed to the steering turning member (22), and the side of the steering turning member (22). Equipped with a nozzle (26) for injecting liquid toward
A nozzle attachment member (24) attached to (23).

[0006] The self-propelled spray vehicle (10) includes, for example, a chemical liquid automatic spray vehicle (10) that turns to spray the spray liquid to the crop on each ridge (38) in the house. Self-propelled spreader
(10) is not limited to the unmanned driving vehicle, but also includes a traveling vehicle driven by an operator. Self-propelled spreader
The spray liquid sprayed by (10) is, for example, a chemical solution, a fertilizer solution, or water. The steering turning member (22) is, for example, an axle housing or a gear box (22).

[0007] The direction of the nozzle (26) is the self-propelled spreader (10).
May not be in the direction of being directly beside while traveling straight ahead, for example, may be diagonally forward with respect to beside.

[0008] By rotating the steering turning member (22) around the turning axis, the directions of the left and right steered wheels (12) are changed, and steering is performed. The direction of the nozzle (26) is the sprayer body
In a self-propelled spray vehicle fixed to (11) (hereinafter, referred to as "conventional self-propelled spray vehicle Z"), the position of the nozzle (26) is set so that the position of the spray vehicle body (11) in the front-rear direction is changed. If it is far away from the center, the nozzle (2)
The spray liquid from 6) does not go toward the turning center, but goes to a position deviated from the turning center, and an area of uneven spraying occurs in a range including the turning center. On the other hand, in the self-propelled spreader (10), the fixing member (23) is attached to the self-propelled spreader (1).
As the steering wheel (12) rotates integrally with the turning of (0),
Since the spray liquid from the nozzle (26) travels in the left-right direction of the fixed member (23), that is, toward the turning center of the self-propelled spray vehicle (10), the generation of uneven spray such as a blind spot area on the spray is suppressed. it can.

In this self-propelled spreader (10), the fixing member (2)
3) is simply fixed to the steering turning member (22) without interposing a link mechanism between the steering turning member (22) and the structure is simplified.

According to the self-propelled spreader (10) of the present invention, the ridge
The extending direction and the width direction of (38) are defined as the vertical direction and the horizontal direction, respectively, and a plurality of ridges (38) are arranged in the horizontal direction, and each ridge (38) is common on one side in the vertical direction. Headlands (3
Adjacent to 6), the self-propelled spreader (10) changes the traveling route so as to make a turning movement between the lateral traveling on the headland (36) and the longitudinal traveling on the ridge passage (39). It is specified.

The vehicle travels along a furrow passage (39) in a field,
In a self-propelled spraying vehicle (10) for spraying a spray liquid to a crop on a plurality of ridges (38), a common headland (36) and a plurality of ridge passages are provided.
It is necessary to repeatedly move between (39) and (3), and at the time of the movement, it is necessary to steer the traveling direction from the vertical direction to the horizontal direction and vice versa. In that case, the conventional self-propelled spreader Z
In each of the ridges (38), uneven spraying is likely to occur in a corner portion corresponding to the inner side in the turning direction of the self-propelled spreader (10). In this self-propelled spraying vehicle (10), it is possible to omit the spraying operation for removing the uneven spraying of the corner portion in each ridge (38) later, and it is possible to greatly improve the efficiency.

According to the self-propelled spreader (10) of the present invention, the self-propelled spreader (10) is mounted on the headland (36) in the furrow passage (39).
When traveling in the direction away from the vehicle, the forward and backward directions of the traveling direction are defined as the forward direction and the backward direction of the self-propelled spreader (10), respectively.
It is deployed in front of (11).

The spraying of the spray liquid from the nozzle (26) is performed only when the self-propelled spraying vehicle (10) is traveling forward or only when traveling backward. It is possible to do it in Regarding dispersion unevenness,
The nozzle (26) may be arranged on either the front side or the rear side of the sprayer main body (11). However, when the area of the headland (36) is reduced as much as possible and the area of the ridge (38) is increased, the self-propelled spreader is disposed on one side in the longitudinal direction of the ridge (38).
Although the headland (36) having a necessary area is secured in the traveling of (10), the area of the headland (36) is reduced on the other side, and as a result, the front end of the self-propelled spreader (10) is reduced. The other headland (3
Inability to fully enter 6) occurs. If this is the case, if the nozzle (26) is
If provided behind 1), it would be difficult or inadequate to apply the spray liquid to the other end of each ridge (38). In this self-propelled spreader (10), the nozzle (26) is arranged in front of the main body (11) of the spreader car.
The front end of (10) does not protrude longitudinally into the headland (36) on the other side from the other end of the ridge (38), that is, even if it just reaches the position of the other end of the ridge (38), ) Can be appropriately applied to the other end.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are a side view and a plan view of the automatic chemical liquid dispersion vehicle 10. Chemical sprayer 10
, The spraying vehicle body 11 has a pair of front and rear left and right wheels 12 and 13 at the front and rear, respectively.
Are both steering wheels and driving wheels.
The front and rear gear boxes 22 (in FIG. 1, only the gear box 22 on the front wheel 12 side is shown by a broken line, and the gear box 22 on the rear wheel 13 side is not shown). The upright member 15 is erected, and the hanging members 14 and 15 are rotatably connected to the lower portion of the spraying car main body 11 around a vertical line. This allows each gear box 22 to be pivotable about the center line of the depending members 14,15. A pair of front wheels 12 and a pair of rear wheels 13 are rotatably supported at left and right ends of each gear box 22. The automatic chemical spraying vehicle 10 is equipped with a battery (not shown) and a motor which can be rotated forward and backward by electric power from the battery, and rotational power from the motor is transmitted by a transmission shaft (not shown) in the hanging members 14 and 15. ) And a bevel gear and an axle (not shown) in the gear box 22 to the front wheels 12 and the rear wheels 13. The steering of the automatic chemical liquid dispenser 10 is controlled by controlling the turning angles of the front wheels 12 and the rear wheels 13 through the control of the turning angles of the hanging members 14 and 15 around a vertical line. The automatic chemical liquid dispersion vehicle 10 is a four-wheel drive four-wheel steering, and the four-wheel steering is also an anti-phase four-wheel steering. The main body operation panel section 19 is provided at the rear end of the upper surface of the spraying car main body 11,
A predetermined operation member is provided. The front overhang plate 23
The rear end portion is fixed horizontally to the front gear box 22 and is protruded forward of the spreader vehicle body 11 at the front end. The front overhang plate 23
It rotates integrally with the gear box 22 around the center line of the hanging member 14. The support column 24 is fixed to the center in the left-right direction of the upper surface of the front end of the front overhanging plate 23 at the lower end, and extends in a straight line in the vertical direction to the vicinity of the upper portion of the spreader vehicle body 11. The nozzle pipe 25 extends in the vertical direction in parallel with the column 24, and is fixed to an upper end portion of the column 24 at an intermediate portion in the longitudinal direction. The pair of nozzles 26 are directed to the left and right, respectively, and are attached to each height of the nozzle pipe 25 so that a total of four pairs of nozzles 26 are arranged at equal intervals in the vertical direction. A spray hose (not shown) extends from the rear end of the automatic chemical spraying vehicle 10, and a chemical solution is supplied from a pump (not shown) via the spray hose to the automatic chemical spraying vehicle 10.
Supplied to

Here, the turning angle α of the gear box 22 and the direction β of the nozzle 26 with respect to the front extension plate 23 are defined. α is a planar view of the chemical liquid automatic spraying vehicle 10,
The inclination angle of the left and right center line C2 of the gear box 22 with respect to the left and right center line C1 of the spreader vehicle body 11 extending in the front-rear direction (since the counterclockwise direction is a positive value of α in plan view, α is relative to C1 It is positive when it is on the left and negative when it is on the right.) α corresponds to the steering angle of the front wheels 12. β is the jetting direction of the nozzle 26 with respect to the straight line C2 in the plan view of the chemical liquid automatic spraying vehicle 10 (since the counterclockwise direction in the plan view is β positive, β is when the front of the jetting direction is on the left side with respect to C2. Is positive and negative when it is on the right.) The unit of α and β is “°”.
Assuming that the absolute value of β is | β |, when | β | = 90, the nozzle 26 faces directly beside the sprayer main body 11 when the automatic chemical liquid sprayer 10 is traveling straight. For β, 0 <| β
| <180, and in this chemical liquid automatic spraying vehicle 10, 0 <
| Β | <90, and | β | is approximately 80. The direction of the front overhanging plate 23 with respect to the spraying car main body 11 is α + β, and when the automatic chemical solution spraying car 10 is traveling straight ahead, α = 0, and therefore β.

FIG. 3 is a schematic view of a field in a house where the automatic chemical liquid spraying vehicle 10 performs a spraying operation. In the field, the longitudinal direction and the width direction of the ridge 38 are defined as a longitudinal direction and a lateral direction, respectively, for convenience of explanation. The field is composed of an entrance headland 36, a ridge region 37, and a back headland 40 in order in the vertical direction. In the ridge region 37, a plurality of ridges 38 are arranged in the lateral direction, and an inter-ridge passage 39 is formed between the ridges 38 in the lateral direction. The ridge passages 39 at both ends in the lateral direction are provided on only one side.
8 are present and are not strictly ridge-to-ridge passages, but are functionally identical to other ridge-to-ridge passages, and will be referred to as ridge-to-ridge passages. The guidance transmitter 44 is provided at one end in the lateral direction at the entrance headland 36. The electromagnetic induction wire 45 is
One end is connected to the induction transmitter 44, is buried at a predetermined depth in the ground, and extends to each ridge passage 39 through the entrance headland 36. Electromagnetic induction wire 45
At the entrance headland 36, a headland portion straight portion 50 extending in the lateral direction while being close to one end of the ridge 38, and diagonally branching off from the headland portion straight portion 50 to enter each ridge passage 39. And an oblique approach line portion 51 that goes down. A plurality of electromagnetic induction wires 45 are bundled in the headland straight portion 50. Each electromagnetic induction wire 45 is connected to a common horizontal return line 46 on the back headland 40 side, and the horizontal return line 46 is
Extending in the horizontal direction at the back headland 40, the vertical return line 47
The longitudinal return line 47 extends in the longitudinal direction through the furrow passage 39 closest to the induction oscillator 44 in the arrangement of the furrow passages 39 and reaches the induction oscillator 44.

The sensor plate 57 includes a headland straight portion 5
At 0, the diagonal approach line 51 is laid on the ground surface at a position slightly closer to the guide transmitter 44 than at the branching position and at a position of the end of the inter-ridge passage 39 on the back headland 40 side. In FIG. 3, there are a total of four straight lines of the electromagnetic induction wire 45 in each ridge passage 39, and these are numbered # 1, # 2, # 3, and # 4 from the straight line farther from the induction transmitter 44. Attach. In the spraying operation, the chemical spraying vehicle 10 travels from the electromagnetic induction wire 45 of # 1 to the electromagnetic induction wire 45 of # 4 in numerical order. And the first # 1 electromagnetic induction wire 4
At the point where the fifth and last # 4 electromagnetic induction wires 45 transition from the headland portion straight portion 50 to the oblique approach line portion 51, two sensor plates 57 are laid on the ground at a slight interval. In addition, the two oblique approach lines 51 related to # 4
Among them, one is hidden under the automatic chemical solution spraying vehicle 10 in FIG. The post 53 faces each oblique approach line portion 51,
It is installed at the corner of each ridge 38.

At the start and end of the spraying operation, the automatic chemical spraying vehicle 10 is located at the two sensor plates 57 associated with the electromagnetic induction wire 45 of # 4. The guidance transmitter 44
First, an alternating current of a predetermined frequency is caused to flow through the electromagnetic induction wire 45 related to # 1. The automatic chemical liquid spray vehicle 10 performs steering while detecting a guided radio wave from the electromagnetic induction wire 45, and travels along the # 1 electromagnetic induction wire 45. The chemical liquid automatic spraying car 10
Two sensor plates 5 related to # 1 electromagnetic induction wire 45
7, the spraying of the chemical solution from the nozzle 26 is started, and the ridge passage 39 related to the electromagnetic induction wire 45 of # 1.
To enter. Then, the chemical liquid is sprayed from the nozzle 26 to the crop on the ridge 38 while moving forward on the straight portion of the electromagnetic induction wire 45 of # 1. When the vehicle arrives at the sensor plate 57 on the back headland 40 side, the application of the chemical solution is stopped, the traveling direction is switched from forward to backward, and the vehicle travels backward.
And stops. The arrival of the automatic liquid spray vehicle 10 at each sensor plate 57 is sequentially notified to the guidance transmitter 44 by radio, and the guidance transmitter 44 is notified.
Then, the next instruction is transmitted to the automatic chemical liquid spray vehicle 10 by radio. Next, the induction transmitter 44 causes an alternating current to flow through the electromagnetic induction wire 45 of # 2, and the automatic dispensing vehicle 10 applies the electromagnetic current to the electromagnetic induction wire 45 of # 2 in the same manner as the electromagnetic induction wire 45 of # 1. Spreading work is performed while traveling along. Thus, the last # 4
The same control is repeated up to the electromagnetic induction wire 45.

FIG. 4 shows a state of spraying at the corners of the ridge 38 by the conventional automatic chemical liquid spraying vehicle 70 and the automatic chemical liquid spraying vehicle 10. In the conventional automatic dispensing car 70 (FIG. 4A), since the support column 24 is fixed to the front part of the main body 11 of the spraying car, the nozzle 2
The direction of 6 is β during turning as well as during straight running, and the uneven distribution area A is formed at the corner of the ridge 38. On the other hand, in the automatic chemical liquid spraying vehicle 10 (FIG. 4B), the front overhanging plate 23 rotates around the center line of the hanging member 14 integrally with the gear box 22, and as a result, The direction of the nozzle 26 is set to α + β, that is, when the chemical is sprayed inward in the turning direction, the chemical is directed toward the turning center of the automatic chemical liquid spraying vehicle 10,
Further, at the time when the nozzle 26 starts to enter the ridge passage 39, the front wheel 12 is in the gear box 2 while the sprayer main body 11 is still oblique with respect to the longitudinal direction of the ridge 38.
The turning of the ridge 38 makes the ridge 38 substantially parallel to the longitudinal direction of the ridge 38, so that it is possible to prevent the blind spot area A on the spray from being generated at the corner of the ridge 38 inside the turning direction.

[Brief description of the drawings]

FIG. 1 is a side view of a chemical liquid automatic spraying vehicle.

FIG. 2 is a plan view of a chemical liquid automatic spraying vehicle.

FIG. 3 is a schematic view of a field in a house where a chemical liquid automatic spraying vehicle performs a spraying operation.

FIG. 4 is a diagram showing, in comparison, a spraying state at a corner portion of a ridge by a conventional automatic dispenser for chemical liquid and an automatic dispenser for chemical liquid.

FIG. 5 is a view showing a blind spot area for spraying a chemical solution at an end of a ridge, which is generated when a conventional automatic chemical spraying vehicle enters a ridge passage from an entrance headland.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 Chemical liquid automatic spraying car (self-propelled spraying car) 11 Spraying car main body (spraying car main body) 12 Front wheel (steering wheel) 22 Gear box (steering turning member) 23 Front overhanging plate (fixing member) 24 Post (nozzle mounting member) 26 Nozzle 36 Entrance headland 38 Ridge 39 Ridge passage

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B043 AA04 AB02 AB15 BA08 BB08 EA35 EB03 EB08 EB15 ED02 2B121 CB06 CB13 CB25 CB35 CB42 CB47 CB51 4D074 AA05 BB06 CC04 CC22 CC54

Claims (3)

[Claims] 1. A steering turning member (22) coupled to a spreader vehicle body (11) so as to be turnable around a vertical turning axis, and rotatably mounted on left and right ends of the steering turning member (22). The steering pivot member (22) supported about the pivot axis;
The left and right steered wheels (12) whose steering angle is controlled by turning of the steering wheel (2), and a fixed member (2) fixed to the steering turning member (22)
3) and a nozzle (26) for injecting liquid toward the side of the steering turning member (22).
A nozzle attachment member (24) attached to (23),
The self-propelled spraying vehicle according to any one of the preceding claims, comprising: 2. An extending direction and a width direction of the ridge (38) are defined as a vertical direction and a horizontal direction, respectively, and a plurality of ridges (38) are arranged in a horizontal direction. Adjacent to a common headland (36) on one side, said self-propelled spreader (10)
Is characterized in that a traveling route is defined so as to make a turning travel between traveling in the lateral direction on the headland (36) and traveling in the vertical direction in the ridge passage (39). The self-propelled application vehicle according to claim 1. 3. The self-propelled spreader (10) is connected to the furrow passage.
In (39), when the vehicle is traveling in a direction away from the headland (36), the forward and backward directions of the traveling direction are defined as the forward direction and the backward direction of the self-propelled spreader (10), respectively. The self-propelled spray vehicle according to claim 2, wherein the nozzle (26) is disposed in front of the spray vehicle body (11).