JP4005283B2 - Agricultural chemical spray vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an agrochemical application vehicle.
[0002]
[Prior art]
Conventionally, as a form of agricultural chemical spraying vehicle, on the body frame with front and rear wheels, the prime mover part is placed at the foremost part, the driving part is placed immediately after it, and the chemical tank is placed immediately after that There is one that has been placed, and a chemical spraying part is placed immediately after that.
In such a pesticide spraying vehicle, the chemical solution in the chemical tank is pumped to the chemical solution spraying portion by the chemical solution spray pump provided in the prime mover while the vehicle is traveling, and the chemical solution is sprayed around from the chemical solution spraying portion. ing.
[0003]
[Problems to be solved by the invention]
However, in the agrochemical spray vehicle described above, since the operation part and the chemical solution spraying part are arranged close to each other with the chemical solution tank in between, the chemical liquid sprayed from the chemical solution spraying part may adhere to the driving part. Yes, it may interfere with operation due to the attached chemicals.
[0004]
In addition, since the prime mover part is arranged immediately before the driving part, there is a problem that the forward visibility and the operability are not good for an operator who sits on the driving part and performs a work operation.
[0005]
In addition, because the driving part is adjacent to the prime mover part, there is a problem that it is difficult to work comfortably due to the noise and vibration generated by the prime mover part.
[0006]
[Means for Solving the Problems]
Therefore, in the present invention, on the vehicle body frame including the front and rear wheels, the driving unit is disposed at the frontmost position, while the chemical solution spraying unit is disposed at the rearmost position. In a pesticide spray vehicle in which a chemical tank and a prime mover are disposed between the front steering mechanism for steering the pair of left and right front wheels, the rear steering mechanism for steering the pair of left and right rear wheels, A steering system switching mechanism that is interposed between steering mechanisms and switches a steering system, and a steering operation mechanism that includes a steering wheel that is linked to the steering system switching mechanism. An auxiliary guard body is detachably interposed between the arranged switching mechanism guard body and the front bell crank support shaft provided in the front steering mechanism, and the auxiliary guard body is a guard body main body. A front end is attached to the front bell crank spindle, and the guard body is formed below a swing case that forms part of the steering system switching mechanism and a pinion rotation motor that swings integrally with the swing case. The rear end edge of the guard body can be attached to the switching mechanism guard body so that the pinion rotation motor can swing integrally with the swing case. The present invention provides a pesticide sprayer characterized by covering and protecting the lower part of the pinion rotation motor over its swinging range while securing a space .
[0007]
The present invention is also characterized by the following configurations.
[0009]
(1) Provided on the left and right sides of the driving unit are front fenders that respectively cover the front upper part of the front wheels, and provided on each front fender a visual window for visually confirming the steering operation of the front wheels.
[0010]
(2) The driving unit is provided with a seat, and the seat is disposed between a pair of left and right front fenders, and the steering operation of each front wheel is performed through a visual window provided on each front fender in a posture seated on the same seat. Was made visible.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0012]
That is, the agricultural chemical spray vehicle according to the present invention has a driving part disposed at the frontmost position on the body frame having front and rear wheels, and a chemical spraying part disposed at the rearmost position. A chemical tank and a prime mover unit are disposed between the unit and the chemical spraying unit.
[0013]
In this way, the operating unit is arranged at the foremost part on the vehicle body frame, while the chemical solution spraying unit is arranged at the rearmost part on the vehicle body frame, so that the chemical solution sprayed from the chemical solution spraying unit is placed in the driving unit. Adhesion is reduced, and troubles due to the attached chemical solution can be eliminated.
[0014]
In addition, since the operating section is placed with a chemical tank between it and the prime mover, the effects of noise and vibration generated from the prime mover can be reduced, and the working environment in the operating section can be reduced. It can be ensured satisfactorily.
[0015]
In addition, the relatively heavy chemical tank and prime mover are located near the center of the body frame, so that the stability of the body can be ensured and the driving performance is improved. be able to.
[0016]
In addition, a front steering mechanism that steers the pair of left and right front wheels, a rear steering mechanism that steers the pair of left and right rear wheels, and a steering system switching that switches between the two steering mechanisms. A steering mechanism having a mechanism and a steering wheel linked to the steering system switching mechanism, a switching mechanism guard body disposed immediately below the steering system switching mechanism, and a front bell provided on the front steering mechanism An auxiliary guard body is detachably interposed between the crank spindle and the crank support shaft.
[0017]
In this way, by interposing the auxiliary guard body between the switching mechanism guard body and the front bell crank support shaft, the switching mechanism guard body and the front bell crank support shaft can be reinforced by the auxiliary guard body, respectively. It is possible to secure a good strength and to prevent the occurrence of a problem that the steering system switching mechanism collides with a ground projection such as a stone and is damaged. Can be secured satisfactorily.
[0018]
Moreover, since the auxiliary guard body is detachably attached, when performing maintenance or the like of the steering system switching mechanism, the maintenance work can be smoothly and reliably performed by removing the auxiliary guard body.
[0019]
In addition, front fenders that respectively cover the front upper part of the front wheels are provided on the left and right sides of the driving unit, and a viewing window for visually confirming the steering operation of the front wheels is provided on each front fender.
[0020]
In this way, when the operator performs a steering operation, it is excellent in visibility that the state of the steering operation of the front wheels can be easily seen through the viewing window. Incorrect operation can be prevented and safety can be improved.
[0021]
Moreover, since the viewing window is provided, the field of view of the operator is widened, and the operator can be afforded a sense of safety and security. In this respect, safety can be improved.
[0022]
In addition, a seat is provided in the driving section, and the seat is disposed between a pair of left and right front fenders, and the steering operation of each front wheel is performed through a viewing window provided in each front fender in a posture seated on the same seat. Visible.
[0023]
In this way, the operator can visually recognize the steering operation of each front wheel through the visual window provided on each front fender in the posture seated on the seat, so that it can be easily viewed while performing other driving operations. Therefore, the visual recognition operation does not interfere with other driving operations, and the operability and safety can be ensured satisfactorily.
[0024]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0025]
A shown in FIG. 1 is a pesticide spraying vehicle according to the present invention. The pesticide spraying vehicle A is provided on a body frame 1 having a pair of left and right front wheels 6,6 and a pair of left and right rear wheels 7,7. The operation unit 2 is disposed at the frontmost position, while the chemical solution spraying unit 5 is disposed at the last position, and the chemical solution tank 3 and the motor unit 4 are disposed between the operation unit 2 and the drug spraying unit 5. It is arranged.
[0026]
The prime mover unit 4 includes an engine E and a chemical spray pump 8.
[0027]
In this way, the pesticide spraying vehicle A feeds the chemical stored in the chemical tank 3 to the chemical spraying unit 5 by the chemical spraying pump 8 while running the vehicle body, and the surroundings from the chemical spraying unit 5 The chemical solution is sprayed on.
[0028]
At this time, since the driving unit 2 is disposed at the foremost part on the vehicle body frame 1, the chemical solution spraying unit 5 is disposed at the rearmost part on the vehicle body frame 1, so that the chemical solution sprayed from the chemical solution spraying unit 5 Adhering to the operation part 2 is reduced, and troubles due to the adhered chemical solution can be eliminated.
[0029]
Moreover, since the relatively heavy chemical tank 3 and the prime mover unit 4 are disposed near the center of the body frame 2, the stability of the vehicle body can be ensured well, and traveling performance is improved. Can be improved.
[0030]
The driving unit 2 has a cabin 9 disposed at the front of the vehicle body frame 1, an operation column 10 is erected at the front end of the vehicle body frame 1 in the cabin 9, and a steering wheel is installed at the upper end of the operation column 10. 11 is attached via a wheel support shaft 12, and a seat 13 is disposed immediately behind the steering wheel 11. A steering operation mechanism 14, which will be described later, is linked to the steering wheel 11.
[0031]
Here, as shown in FIGS. 2 and 3, the pair of left and right front wheels 6 and 6 are provided with a pair of left and right front axle cases 16 and 16 attached to a front differential device 15 disposed at the front of the body frame 1. On the other hand, the pair of left and right rear wheels 7, 7 are linked to the rear differential device 17 disposed at the rear of the vehicle body frame 1 via the pair of left and right rear axle cases 18, 18, and both differential devices are connected. Between 15 and 17, a transmission case 19 linked to the engine E is arranged, and the transmission case 19 and the differential devices 15 and 17 are linked and linked via front and rear transmission shafts 20 and 21. is doing.
[0032]
Further, as shown in FIG. 2, the steering operation mechanism 14 is connected to a pair of left and right front wheels 6 and 6 with a front steering mechanism 22 for steering the two front wheels 6 and 6, while A rear steering mechanism 23 for steering the rear wheels 7 and 7 is linked to the rear wheels 7 and 7, and a steering system switching mechanism 24 for switching the steering system is interposed between the steering mechanisms 22 and 23. The steering system switching mechanism 24 is configured to be interlocked with the steering wheel 11.
[0033]
The front steering mechanism 22 includes a front bell crank 25, a pair of left and right front tie rods 26 and 26, and a pair of left and right front knuckle arms 27 and 27, and 28 is a front bell crank support shaft.
[0034]
The rear steering mechanism 23 includes a rear bell crank 29, a pair of left and right rear tie rods 30, 30, and a pair of left and right rear knuckle arms 31, 31, 32 is a rear bell crank support shaft. .
[0035]
The steering system switching mechanism 24 is formed by extending in a circular arc shape in the left-right width direction, and a swing case 33 pivotally supported around the axis in the vertical direction, and a swing for swinging the swing case 33. A hydraulic cylinder 34 for movement, a rack 35 slidably disposed in the swing case 33, a pinion gear 36 meshing with the rack 35, a pinion rotation motor 37 for rotating the pinion gear 36, and the swing case 33, a front relay rod 38 that connects the right side portion of 33 and the front bell crank 25, and a rear relay rod 39 that connects the center portion of the rack 35 and the rear bell crank 29.
[0036]
The swing hydraulic cylinder 34 is connected to the steering wheel 11 via a control valve (not shown) constituting the power steering device.
[0037]
Further, the swing case 33 of the steering system switching mechanism 24 is supported by a top-opening box-shaped support body 40 suspended from the vehicle body frame 1, and swings with the axis line directed vertically in the bottom of the support body 40. A movable support shaft 41 is erected, and a swing case 33 is pivotally supported on the swing support shaft 41.
[0038]
In addition, the support 40 is formed to extend in the left-right width direction to protect the swing case 33 from below.
[0039]
In this way, when the steering wheel 11 is turned, the swing hydraulic cylinder 34 expands and contracts in conjunction with it, and the swing case 33 swings in the front-rear direction in conjunction with it, and the front relay rod 38 is moved. Thus, the front steering mechanism 22 is slid in the left-right direction so that the front wheels 6, 6 can be steered.
[0040]
At this time, when the rack 35 is arranged at the center portion in the swing case 33, the rear wheels 7, 7 are kept in the straight traveling state, and the front two-wheel steering system using only the front wheels 6, 6 is adopted.
[0041]
Further, the rear wheels 7 and 7 can be steered to either the same phase or the opposite phase as the front wheels 6 and 6 by sliding and biasing the rack 35 left and right via the pinion gear 36 by the pinion rotation motor 37. It becomes a four-wheel steering system that can.
[0042]
In the configuration as described above, the gist of the present invention is that the support body 40 as a switching mechanism guard body disposed immediately below the steering system switching mechanism 24 and the front bell crank support shaft 28 provided in the front steering mechanism 22. The auxiliary guard body 43 is detachably attached between them.
[0043]
That is, as shown in FIGS. 4 and 5, the auxiliary guard body 43 attaches the front end portion 43b of the guard body main body 43a to the attachment piece 44 attached to the front bell crank support shaft 28 with the attachment bolt 45, and rearwardly downward. The left and right widths are gradually widened and extended substantially horizontally rearward from the position directly below the front end of the pinion rotation motor 37, and the rear end edge 43c is superposed on the support body 40 from below, and the same. The rear edge 43c is attached with a mounting bolt 45.
[0044]
In this way, the auxiliary guard body 43 has a swing range below the pinion rotation motor 37 while securing a space in which the pinion rotation motor 37 can swing integrally with the swing case 33. It is covered and protected.
[0045]
In this embodiment, as shown in FIG. 6, front fenders 47 and 47 that cover the front upper portions of the front wheels 6 and 6 are provided on the left and right sides of the driving unit 2, respectively. Visual windows 48, 48 for visually confirming the steering operation of the front wheels 6, 6 are provided.
[0046]
That is, the front fender 47 includes a front low rear high (backward tilted) inclined surface portion 47a to cover the front upper portion of the front wheel 6, and an upper surface portion extending substantially horizontally rearward from the rear end edge of the inclined surface portion 47a. The viewing window 48 has an opening 47c extending from the front position of the inclined surface portion 47a to the front position of the upper surface portion 47b, and an acrylic transparent body 48a is attached to the opening portion 47c with a mounting bolt. It is formed by detachably attaching with 48b and stretching.
[0047]
The seat 13 of the driving unit 2 is arranged between a pair of left and right front fenders 47, 47, and an operator seated on the seat 13 has a viewing window 48, provided on each front fender 47, 47 in a seated position. Through 48, the steering operation of each front wheel 6, 6 can be visually confirmed.
[0048]
Further, when the transparent body 48a is scratched or soiled, the transparent body 48a can be replaced as appropriate.
[0049]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0054]
(1) In the present invention described in claim 1 , on the vehicle body frame having the front and rear wheels, the driving unit is disposed at the frontmost position, while the chemical solution spraying portion is disposed at the rearmost position. In a pesticide spray vehicle in which a chemical tank and a prime mover unit are arranged between the driving unit and the chemical spraying unit , after steering the front steering mechanism for steering the pair of left and right front wheels and the pair of left and right rear wheels A steering operation mechanism comprising a side steering mechanism, a steering system switching mechanism that is interposed between both steering mechanisms, and a steering wheel that is linked to the steering system switching mechanism. An auxiliary guard body is detachably interposed between the switching mechanism guard body arranged directly below the switching mechanism and the front bell crank support shaft provided in the front steering mechanism. A front end of the main body is attached to the front bell crank spindle, and the guard body is formed as a swing case forming a part of the steering system switching mechanism and a pinion swinging integrally with the swing case. The rear end edge of the guard body is attached to the switching mechanism guard body, and the pinion rotation motor swings integrally with the swing case by the guard body. The space below the pinion rotation motor is covered and protected over the swinging range while a space that can be moved is secured .
[0055]
In this way, by interposing the auxiliary guard body between the switching mechanism guard body and the front bell crank spindle, the switching mechanism guard body and the front bell crank spindle can be reinforced by the auxiliary guard body, respectively. It is possible to secure a good strength and to prevent the occurrence of a problem that the steering system switching mechanism collides with a projection on the ground such as a stone and is damaged. Can be secured satisfactorily.
In particular, the auxiliary guard body has a front end portion of the guard body main body attached to the front bell crank spindle, and the guard body main body is integrated with the swing case and the swing case forming part of the steering system switching mechanism. The rear end edge of the guard body is attached to the switching mechanism guard body, and the pinion rotation motor swings by the guard body. Since the space below the pinion rotation motor is covered and protected over the swing range while ensuring a space capable of swinging integrally with the case, the swing case and the pinion rotation motor are It is possible to prevent the occurrence of a problem of being damaged by colliding with a projection on the ground such as a stone, and to ensure the functions of the swing case and the pinion rotation motor satisfactorily.
[0056]
Moreover, since the auxiliary guard body is detachably attached, when performing maintenance or the like of the steering system switching mechanism, the maintenance work can be smoothly and reliably performed by removing the auxiliary guard body.
[0057]
(2) In the present invention according to claim 2, in order to visually recognize the steering operation of the front wheel on each front fender while providing the front fender covering the front upper part of the front wheel on the left and right sides of the driving unit, respectively. A viewing window is provided.
[0058]
In this way, when the operator performs a steering operation, it is excellent in visibility that the state of the steering operation of the front wheels can be easily seen through the viewing window. Incorrect operation can be prevented and safety can be improved.
Moreover, since the viewing window is provided, the field of view of the operator is widened, and the operator can be afforded a sense of safety and security. In this respect, safety can be improved.
[0059]
(3) In the present invention according to claim 3 , the driver is provided with a seat, and the seat is disposed between the pair of left and right front fenders, and is provided in each front fender in a posture seated on the seat. The steering operation of each front wheel is visible through the window.
[0060]
In this way, the operator can visually recognize the steering operation of each front wheel through the visual window provided on each front fender in the posture seated on the seat, so that it can be easily viewed while performing other driving operations. Therefore, the visual recognition operation does not hinder other driving operations, and the operability and safety can be ensured satisfactorily.
[Brief description of the drawings]
FIG. 1 is a side view of an agrochemical spray vehicle according to the present invention.
FIG. 2 is a side explanatory view of the steering operation mechanism of the agricultural chemical spray vehicle.
FIG. 3 is an explanatory plan view of the steering operation mechanism of the agricultural chemical spray vehicle.
FIG. 4 is a side view of an auxiliary guard body.
FIG. 5 is a bottom view of the auxiliary guard body.
FIG. 6 is an explanatory plan view of a viewing window.
[Explanation of symbols]
A Agricultural chemical spray vehicle 1 Body frame 2 Driving unit 3 Chemical solution tank 4 Motor unit 5 Chemical solution spraying unit 6 Front wheel 7 Rear wheel 8 Chemical solution spray pump 9 Cabin

Claims (3)

On the vehicle body frame (1) having the front and rear wheels (6, 6, 7, 7), the driving part (2) is arranged at the frontmost position, while the chemical spraying part (5) is located at the rearmost position. In a pesticide spraying vehicle in which a chemical tank (3) and a prime mover unit (4) are disposed between the driving unit (2) and the chemical spraying unit (5) ,
Front steering mechanism (22) that steers the pair of left and right front wheels (6, 6) , rear steering mechanism (23) that steers the pair of left and right rear wheels (7, 7) , and both steering mechanisms a steering mode switching mechanism for switching the steering system and interposed between the (22, 23) (24), the steering mode switching mechanism (24) in conjunction linked steering wheel (11) and the steering operation mechanism having a has a (14),
The auxiliary guard body (43) is disposed between the switching mechanism guard body (40) disposed immediately below the steering system switching mechanism (24) and the front bell crank spindle (28) provided on the front steering mechanism (22 ). And detachably installed,
The auxiliary guards (43), the front end of the guard body (43a) and (43 b), mounted on the front side bell crank shaft (28), the same guard body (43a), the steering mode switching mechanism (24 ) some integrally extension was cast to the rear at the lower position of the motor pinion turning to rock (37) and the pivot case to form (33) and DoYurado case (33) of, the guard body ( 43a) The rear edge (43c) is attached to the switching mechanism guard body (40) , and the guard body (43a) causes the pinion rotation motor (37) to swing integrally with the swing case (33). A pesticide sprayer characterized by covering and protecting the lower part of the pinion rotation motor (37) over its swinging range while securing a movable space . Front fenders (47, 47) for covering the front upper part of the front wheels (6, 6) are provided on the left and right sides of the driving unit (2), and the front wheels (6, 6) are provided on the front fenders (47, 47). , viewing window (claim 1 pesticides vehicle, wherein the provision of the 48, 48) for viewing the steering operation of 6). The driving section (2) is provided with a seat (13), and the seat (13) is arranged between a pair of left and right front fenders (47, 47), and each front side is seated on the seat (13). The agrochemical application vehicle according to claim 2, wherein the steering operation of each front wheel (6, 6) is made visible through a visual window (48, 48) provided in the fender (47, 47).

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