JP2002059761A - Dashboard mounting device for tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify, lighten and stabilize a mounting constitution of a dashboard for a tractor. SOLUTION: The constitution of the dashboard mounting device for a tractor is characterized by that a lower part of a steering post 3 is mounted on a dome-shaped lower part base 2 fixed between right and left body frames 1, lower parts of side frames 4 are mounted to right and left outer side front parts of the lower part base 2, and these side frames 4 and the steering post 3 are connected by connecting members 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor dashboard mounting device, and more particularly to a tractor of a high-floor traveling type in which a working device such as a seedling plant, a seeding device, a fertilizer device, a cultivator, and a boom sprayer is mounted. it can.

[0002]

In a tractor body having a clutch housing, a floor covering the upper side of the clutch housing is supported on the vehicle body via a damper or the like, and a steering post or a front side is mounted on the floor. In this configuration, the front wall plate and the like are mounted to partition the front engine room from the engine room on the front side. In particular, small and lightweight tractors often do not form a vehicle body component such as the clutch housing, and the support structure such as the steering post, front wall plate, dashboard, etc. must be simple and stable. It is necessary to.

[0003]

According to the first aspect of the present invention, a lower portion of a steering post 3 is mounted on a lower base 2 in the form of a dome which is fixed between left and right body frames 1, and a left and right outer front portion is provided. The lower part of the side frame 4 is attached to the portion, and the side frame 4 and the steering post 3 are connected by a connecting member 5 to constitute a tractor dashboard mounting device.

A second aspect of the present invention is characterized in that a control box 7, a relay 8 and the like are mounted on the back side of a front wall plate 6 provided between the left and right side frames 4.

[0005]

According to the first aspect of the present invention, the lower base 2 in which the steering post 3 and the side frame 4 are connected in a dome shape between the left and right body frames 1 is provided.
Since the upper portion is connected to each other by the connecting member 5, the dashboard, the front wall plate 6 and the like can be mounted between the upper and lower portions. The interconnection between the frame 4 and the steering post 3 enables a stable and rigid structure to be achieved, and the weight can be reduced.

According to the second aspect of the present invention, since the control box 7 and the relay 8 are mounted on the front wall plate 6 connecting the left and right side frames 4, a stable mounting structure can be achieved. The inside of the board can be used effectively. When the meter panel is mounted so as to cover the upper part, maintenance of the control box 7 and the like can be facilitated by attaching and detaching the meter panel.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a tractor body, a front axle bracket 9 is provided at a front end of a pair of left and right body frames 1, an engine 10 is mounted above the front axle bracket 9, and a front axle housing 11 is provided at a lower part. It is supported, and a transmission case 12 is arranged on the rear side. An axle housing 13 is supported on the rear part of the body frame 1, and a driver's seat 14 is mounted on the upper part. The front wheels 1 at both ends of the front axle housing 11 pass through the transmission mechanism of the transmission case 12 when the engine 10 is driven.
5 and the rear wheels 16 at both ends of the rear axle housing 13 are transmitted to achieve a four-wheel drive mode. From the transmission case 12, the rear PTO
The PTO shaft 18 of the case 17 can be transmitted.

Further, the front wheel 15 and the rear wheel 16 can be steered through the power steering 21 by steering the steering handle 20 of the steering shaft 19 which is supported by the steering post 3. Reference numeral 22 denotes a hood that covers the upper side of an engine room 23, 24 denotes a front grill that covers the front side, and 25 denotes a lift arm that is turned up and down at the rear end of the body frame 1 by expansion and contraction of a lift cylinder 26, and a work machine is mounted on a hitch 27. You can go up and down.

The vehicle body frame 1 has a rectangular tube shape, and has a pair of left and right vertical frame portions extending in parallel from the front axle housing 11 to the rear axle housing 13. This is a form in which appropriate portions such as the front and rear intermediate portions are connected by a horizontal frame portion. In the lower part of the steering post 3 in the body frame 1, the left and right ends of the lower base 2 are fixedly connected.
The lower base 2 has a configuration in which a central portion of the left and right width is bulged upward to form a tunnel shape or a dome shape, and covers the upper side of the transmission case 12 located between the left and right body frames 1 so as to straddle left and right. I have.

A steering bracket 28 is provided on the center of the lower base 2. The steering bracket 28 is formed in a tower shape or a trapezoid shape, and a lower end is integrally fixed to the lower base 2. With this configuration, the lower base 2
Stiffness is further increased. On this upper side, a round tube-shaped steering post 3 is attached and supported. The steering shaft 19 is rotatably supported within the steering post 3, and has a lower end linked to a power steering 21 having a hydraulic valve disposed inside a steering bracket 28. Therefore, a power steering case constituting the power steering ring 21 and a valve mechanism related thereto are attached to the steering bracket 28.

The lower end of the side frame 4 is connected to the front portions of the left and right sides of the lower base 2 via a mounting bracket 29 by bolting or the like. This side frame 4
It is formed in a U-shape in cross section, and the dashboard 3
As a form along the outer surface of the dashboard 1, this dashboard 31
Can be attached with bolts 32. A connection member 5 connects the upper portions of the side frame 4 to the steering post 3 and the steering bracket 28.
These connecting members 5 connect the upper end portions of the left and right side frames 4 with the upper connecting member 30, and
It can be fixed to zero. Also, the connecting member 5 can be attached to the front wall plate 6 attached between the left and right side frames 4.

Both ends of the front wall plate 6 are connected between the left and right side frames 4 by welding, screwing, bolting or the like to partition the front engine room 33 from the dashboard 31. A control box 7, a relay 8 and the like are mounted on the rear side surface of the front wall plate 6. The steering bracket 28 and the steering post 3 are connected by a mounting bracket 34, and the mounting bracket 34 and the side frame 4 are connected by a connecting member 5. A main transmission lever 35, an auxiliary transmission lever 36, and the like are mounted and supported on the mounting bracket 34 by a lever shaft 40, and a steering post cover 37 is mounted.

The steering bracket 28 and the steering post 3 integrated on the lower base 2 are integrated.
And the side frame 4 whose lower part is connected to the lower base 2 by the front wall plate 6 and which is connected by the connecting frame 5 has a high rigidity. It is supported stably. In addition, the power steering 21 disposed on the steering bracket 28 is also compactly mounted, so that a stable mounting form can be achieved.

The dashboard 31 is configured to cover the side frames 4 and the rear side of the front wall plate 6. At the center of this dashboard 31, the steering post 3
The steering post cover 37 is attached so as to cover the rear portions of the steering post 3 and the steering bracket 28. And the gearshift levers 35 and 36 are projected.

At the front of the engine room 33, a gate-shaped hood stay 38 is provided with a front axle bracket 9
The upper and lower ends of the front and rear hood stays 38 and the side frame 4 are connected by a connecting rod. The hood 22 and the side cover 39 are attached to the hood stay 3.
8 and the rear side frame 4 so as to be openable and closable.

Reference numeral 41 denotes a side floor, and reference numeral 42 denotes a center floor formed on the rear side of the lower base 2 at the center. A meter panel 43 is detachably attached to the upper surface of the dashboard 31 with screws 44. The meter panel 43 includes a display monitor 45 and steering buttons 46 to 4.
By arranging 9 and the like, the steering mode can be selected. On the upper side of the steering post cover 37, an accelerator lever 51, a combination switch 50, a tachometer 53 and the like are disposed in addition to the speed change levers 35 and 36, and a main key is provided on the upper right side of the steering post cover 37. The switch 52 is mounted.

The steering buttons 46 to 49 include an automatic switch 46, a 4WS switch 47, an FWS switch 48,
And the RWS switch 49, the automatic switch 46 is turned on when steering and turning in the automatic steering mode, and any one of the mode switches 47, 48, 49
May be turned ON. When the 4WS switch 47 is pressed,
By detecting a constant steering angle of the steering wheel 20, the front wheels 15 and the rear wheels 16 can be automatically steered and turned. When the FWS switch 48 is pressed, the vehicle is turned by the automatic steering of only the front wheels 15. Also, the RWS switch 49
When the button is pressed, the vehicle is turned by steering only the rear wheel 16.

By providing the steering buttons 46 to 49 on the meter panel 43 as described above, the operability can be enhanced by being concentrated on the lower portion of the steering handle 20 and the specification can be easily changed using the meter panel 43. it can. The mounting configuration of the combination switch 50 will be described mainly with reference to FIGS. The steering post cover 37 is made of a synthetic resin, and has a mounting hole 55 in which the switch base 54 is fitted. Locking pieces 56 are provided before and after the switch base 54.
A ring plate 57 made of sheet metal is superimposed on the lower side of the mounting hole 55 to form a locking piece 56 fitted in the mounting hole 55.
And the switch base 54 can be attached.

The ring plate 57 has the mounting holes 5
A hole 58 having substantially the same form as that of the hole 5 is formed.
Is formed. Further, a support piece 60 which is bent to one side is formed at three places on the outer peripheral portion of the ring plate 57, and the support piece 60 is brought into contact with the back surface of the steering post cover 37 to be engaged with the notch 59. The locking piece 56 is elastically pulled downward to maintain the mounting posture of the switch base 54.

As the combination switch 50, a flasher knob 61 is provided on the outer peripheral portion so as to be freely rotatable.
A lighting knob 62 is provided on the inside so as to be freely rotatable, and a horn knob 63 in the form of a push button is provided at the center thereof. A harness 64 is connected to a lower center portion of the switch base 54, and a connector 65 at the tip can be connected to the control box 7. When removing the combination switch 50, the locking piece 56
Can be pushed inward and removed from the notch 59.

The attachment structure of the key switch 52 to the steering post cover 37 will be described mainly with reference to FIGS. The steering post cover 37 is made of synthetic resin and has a switch mounting hole 66 formed therein. On the back side of the switch mounting hole 66, a ring plate 70 forming a cylinder hole 69 for fitting a key head 68 of a key cylinder 67 is overlapped, and the cylinder hole 69 of the ring plate 70 and the switch mounting hole 66 are formed. The key switch 52 for the diesel engine can be attached by screwing and tightening the nut 71 to the key head 68 which is fitted to and protrudes outward. Reference numeral 72 denotes a rotating piece formed on a part of the ring plate 70, which makes contact with a bent surface 73 of the steering post cover 37. 7
Reference numeral 4 denotes a non-rotating protrusion projecting from the cylinder hole 69 of the ring plate 70 for preventing the key cylinder 67 from rotating. it can.

Reference numeral 75 denotes a ring plate used when a key switch for a gasoline engine is mounted. The ring plate 75 has a cylinder hole 76 smaller in diameter than the cylinder hole 69.
Reference numeral 77 denotes a detent groove for fitting a projection formed around the key cylinder. Depending on the specifications of the diesel engine and gasoline engine, the key switch 52
Often, the diameter of the key cylinder 67 differs. Steering post cover 37 and dashboard 3 of the same standard
By using the ring plates 70 and 75 having different hole diameters by sharing the first and the like, the key switch 52 of any specification can be easily and inexpensively mounted.

[Brief description of the drawings]

FIG. 1 is a rear view of a steering post.

FIG. 2 is a side view thereof.

FIG. 3 is a perspective view of the side frame portion and a perspective view of a part thereof.

FIG. 4 is a side view of the tractor.

FIG. 5 is a plan view of the meter panel unit.

FIG. 6 is a plan view showing another embodiment.

FIG. 7 is a plan view of the combination switch mounting portion.

FIG. 8 is a side view thereof.

FIG. 9 is a plan view thereof.

FIG. 10 is a side view thereof.

FIG. 11 is a rear view of the steering post cover.

FIG. 12 is a side view thereof.

FIG. 13 is a side view of the key switch mounting portion and a rear view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Lower base 3 Steering post 4 Side frame 5 Connecting member 6 Front wall plate 7 Control box 8 Relay

Claims (2)

[Claims] 1. A lower portion of a steering post 3 is mounted on a dome-shaped lower base 2 fixed between left and right body frames 1, and a lower portion of a side frame 4 is mounted on a left and right outer front portion. A tractor dashboard mounting device, wherein a side frame 4 and a steering post 3 are connected by a connecting member 5. 2. The tractor dashboard mounting according to claim 1, wherein a control box, a relay, and the like are mounted on the back side of the front wall plate provided between the left and right side frames. apparatus.