JPH053254Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention relates to the structure of the driving part of a chemical spraying vehicle such as a speed sprayer that sprays chemicals on fields. hand,
The present invention relates to a driving unit structure of a chemical spraying vehicle that can reduce the turning radius of the front corner of the vehicle body when turning.

[Conventional technology]

FIG. 3 is a side view of the speed sprayer 10 as a chemical spraying vehicle. speed sprayer 10
The speed sprayer 10 has a frame 16 that is supported by front wheels 12 and rear wheels 14 so as to be self-propelled, and the frame 16 of the speed sprayer 10 includes, in order from the front, a driving section 18, a chemical tank 20, and an engine room 2.
2, a jet head 24, and a blower 26 are arranged. The front wheels 12 function as steering wheels.

Figure 4 shows the structure of the conventional operating section (eg.
29869). The driving section 18 is
The speed sprayer 10 is provided at a front corner of a vehicle body 28, and includes a driver's seat 30 and a control device section 32 facing the driver's seat 30. The steering device section 32 includes a clutch pedal 34 operated by the driver with the left foot, a left brake pedal 36 and a right brake pedal 38 that are operated with the right foot to brake the left and right rear wheels 14, respectively, and a brake pedal 38 that acts as a steering wheel. A steering wheel 40 for controlling the steering angle of the front wheels 12 is provided. Left and right rear wheels 14
The reason why the wheels are braked separately by the left brake pedal 36 and the right brake pedal 38 is to shorten the turning radius of the speed sprayer 10 by braking only the rear wheels 14 on the inside of the turning radius when the speed sprayer 10 turns. It is. Center lines 42, 44, and 46 are center lines of vehicle body 28, driver seat 30, and control equipment section 32, respectively.

In the conventional driving section structure, center lines 42, 44, 4
6 extend in the front-rear direction of the speed sprayer 10 and are parallel to each other. Since the speed sprayer 10 is often operated in narrow fields, it is advantageous for the maximum steering angle of the front wheels 12 as steering wheels to be large. However, this maximum steering angle is
If the speed sprayer 10 is a four-wheel drive, it is limited by the structure of the link mechanism of the tie rod and the knuckle arm, and by the maximum bending angle of the universal joint that transmits the driving force to the front wheels 12 as steering wheels, so the maximum steering of the front wheels 12 is limited. It is becoming difficult to reduce the turning radius due to an increase in angle. To deal with this, as shown in FIG.
2 toward the centerline 42 of the vehicle body 28 with respect to the centerline 44 of the driver's seat 30, thereby changing the contour of the front corner of the vehicle body 28 from A to B.
When turning, the front corner on the outside of the turning radius draws a trajectory toward the inside of the turning radius.

[The problem that the idea attempts to solve]

In the driving section structure shown in FIG. 4, the turning radius at the outermost part of the vehicle body 28 when turning is shortened, but the center line 46 is largely deviated from the center line 44. It becomes difficult for the driver of the vehicle to operate the steering wheel 40, etc.
The rotational operating force of the steering wheel 40 and the pressing force of the left brake pedal 36 and the right brake pedal 38 may become insufficient.

The purpose of this invention is to provide a driving section structure for a chemical dispersion vehicle that can increase the narrowing of the vehicle body without reducing the operating force of the driver vehicle.

[Means to solve the problem]

This invention will be explained using reference numerals in the drawings that correspond to the embodiments.

In claim (1), the driver section 18 is disposed at the front corner of the vehicle body 28 in the chemical spray vehicle. The driving section 18 is arranged so that its front side is directed diagonally toward the inside of the vehicle body 28.

In the driving section structure of the drug dispersing vehicle according to claim (2), the driving section 18 further includes a driver's seat 30 and a control device section 32 facing the driver's seat 30, and is aligned with the centerline 44 of the driver's seat 30. It almost coincides with the center line 46 of the control equipment section 32.

〔Example〕

The present invention will now be described with reference to the embodiments shown in the drawings. In Fig. 1 and Fig. 2, the same reference numerals are used to designate the same parts as Fig. 3 and Fig. 4.

FIG. 1 is a diagram showing the structure of the operating section 18 together with the turning state of the speed sprayer 10. Driving section 1
8 is arranged so that its front side faces diagonally toward the inside of the vehicle body 28. That is, the center line 44 of the driver's seat 30 and the center line 46 of the control device section 32 are directed toward the front of the vehicle body 28 and toward the front range of the center line 42 of the vehicle body 28. , 46 are parallel to each other. In the illustrated embodiment, centerline 46 is
Although the centerline 46 is slightly offset toward the centerline 42 relative to the centerline 44, the centerline 46 may be aligned with the centerline 44. By directing the front of the driving section 18 diagonally inward, the operating device section 32 is largely moved toward the center of the vehicle body 28, and the front corner of the vehicle body 28 is moved inwardly from the conventional B.
It becomes possible to draw it from the position to the position C. Since the center line 44 of the driver's seat 30 is also directed forward and diagonally inward in accordance with the center line 46 of the control equipment section 32, the center line 44 and the center line are 46
The amount of deviation between driver seat 30
Since the amount of deviation between the center line 44 and the center line 46 is small, the driver who operates the control device section 32 while sitting in the seat has a natural operating posture, and the driver operates the clutch pedal 34 and the left brake pedal 36 of the control device section 32 in a natural manner. , sufficient operating force can be applied to the right brake pedal 38 and the steering wheel 40.

In FIG. 1, O is a speed sprayer 10
Pi and Po are the turning trajectories of the left and right front wheels 12, respectively, Pc and Pb are the turning trajectories of C and B of the front corner of the vehicle body 28, respectively, Ro
and Rc are the turning radius of the right front wheel 12 and point C, respectively. The front corner of the vehicle body 28 was replaced with the conventional B
As a result of being able to draw from C to C,
The turning radius of the outermost point of the turning radius of the vehicle body 28 is shortened by r.

FIG. 2 shows the amount of displacement of the left brake pedal 36 and the right brake pedal 38 when the driving section 18 is directed forward and diagonally inward. Driver seat 30 with respect to the direction of steering wheel 40
The distance from the center of the left brake pedal 36 to the center of the right brake pedal 38 is l1 (example: l1 = 600
~800mm), from the direction in which the center line 44 is parallel to the center line 42 of the vehicle body 28, the center line 44
When the center line 44 is rotated by α (e.g. α=5°) so that the front side of the brake pedal faces diagonally toward the inside of the vehicle body 28, the left brake pedal 36 and the right brake pedal 3
8 is l2 toward the inside of the car body 28 (example: l2 = 50 to 70 mm)
Moving. It is possible to narrow the front corner of the vehicle body 28 inward by an amount equivalent to this amount of movement l2.

[Effect of idea]

In the device of claim (1), the driving section is arranged so that its front side faces diagonally inward of the vehicle body, so that the front corner of the driving section is largely shifted toward the center line of the vehicle body, and this As a result, the narrowing of the front corner of the vehicle body can be increased, and the turning radius at the outermost portion of the vehicle body can be reduced. Since the entire driver's seat is oriented diagonally, the driver's seat as well as the driver's seat are oriented diagonally, reducing the deviation between the center line of the driver's seat and the center line of the driver's seat. Sufficient operating force can be applied to the equipment section.

In the invention of claim (2), the driver's seat and the control device section are arranged so that their center lines substantially coincide with each other, so that the operability of the control device section in the driver section is further improved.

[Brief explanation of the drawing]

Fig. 1 shows the structure of the operating section in this invention along with the turning situation of the speed sprayer, and Fig. 2 shows the displacement of the left and right brake pedals when the operating section is directed forward and diagonally inward. 3 is a side view of the speed sprayer, and FIG. 4 is a plan view of the conventional operating section structure. 10...Speed sprayer (chemical spraying vehicle),
18...Driving section, 28...Vehicle body, 30...Driving seat, 32...Control equipment section, 42, 44, 46...
center line.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a chemical spraying vehicle in which the driving section 18 is disposed at the front corner of the vehicle body 28, the driving section 18
A driving unit structure of a chemical spraying vehicle, characterized in that the driving unit is disposed so that its front side is directed diagonally toward the inside of the vehicle body 28. (2) The driver's section 18 includes a driver's seat 30 and a control device section 32 facing the driver's seat 30, and the center line 44 of the driver's seat 30 and the center line 46 of the control device section 32 are approximately parallel to each other. The drive unit structure of a chemical spraying vehicle according to claim 1, characterized in that they are identical to each other.