JP2001246971A - Cab part structure for traveling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fender structure 5 for a traveling vehicle that has increased rigidity and can appreciably prevent the intrusion of dust and the like onto a transmission case 3. SOLUTION: A cab part structure for a traveling vehicle is so constructed that a seat 2b positioned on a travel frame 1c with front wheels 1a and rear wheels 1b is installed via mounting parts 6 and 6a surface-mountable on the transmission case 3, the fender 5 is an integrated combination of wheel cover parts 50 covering the right and left rear wheels 1b and a case cover part 51 covering the transmission case 3, and the case cover part 51 is provided with mounting-part holes 8 and 8a opened for the arrangement of the mounting parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a control section structure of a traveling vehicle such as a tractor or a construction work vehicle.

[0002]

2. Description of the Related Art Hitherto, a tractor fender has been known in which a wheel cover for covering left and right rear wheels, a wheel cover and a case cover for covering a transmission case are integrally formed of synthetic resin. .

In a tractor having such a fender, a driver's seat can be adjusted in the front-rear direction by a mounting frame installed on a transmission case, and the driver's seat can be adjusted forward and backward. Is rotated. And, on the rear bottom surface of the seat, there is provided an anti-vibration rubber to be brought into contact with the mounting frame, and when installing such a mounting frame on the transmission case, a case cover portion of the fender is largely cut off on the transmission case. It has a configuration.

[0004]

However, the tractor having the above-mentioned conventional structure has a structure in which a case cover portion of a fender made of a thin synthetic resin is cut into a large hole above a transmission case. Are weaker as a whole, tend to bend or deform, and have the drawback that dust and rainwater easily enter the transmission case through a widely opened cutout. In addition, since a large-sized mold having a complicated shape is required to form the cut portion, there is a problem in that the production cost of the fender increases.

Further, since the seat uses the mounting frame, there are problems that the structure of the mounting frame is complicated and the sitting posture is increased by the amount of the mounting frame.

[0006]

SUMMARY OF THE INVENTION A control structure of a traveling vehicle according to the present invention is provided to solve the above-mentioned conventional problems, and has a front wheel 1a and a rear wheel 1b. Attachments 6, 6a that allow seats 2b installed on body 1c to be directly attached to transmission case 3.
The fender 5 is formed by integrally forming a wheel cover that covers the left and right rear wheels 1b and a case cover that covers the transmission case. The holes 8, 8a are opened.

Further, a vibration isolating member 7 for supporting the seat 2b in a vibration isolating manner with respect to the transmission case 3 is mounted on the transmission case 3 side.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

Reference numeral 1 denotes a tractor as an embodiment of a traveling vehicle, which mounts an engine (not shown) covered with a bonnet 10 from the front on a traveling body 1c having left and right front wheels 1a and rear wheels 1b. , Rear handle 2a
And a control unit 2 including a seat 2b, various operation levers 2c, and the like, and a work unit to which a tilling device (not shown) can be mounted at the rear of the body 1c.

The tractor 1 has a traveling body 1c.
A transmission case 3 for driving the traveling speed change and the working machine is installed between the left and right rear wheels 1b immediately below the seat 2b, and the rear wheel 1b is supported so as to be capable of transmitting power. The upper part of the wheel 1b and the transmission case 3 is detachably covered with the traveling body 1c by a fender 5 integrally formed by the following configuration.

The fender 5 includes a wheel cover 50 that covers the left and right rear wheels 1b and the transmission case 3
And a case cover 51 having mounting holes 8 and 8a for the seat 2b, which will be described later, that cover the space between the seats 2b.

[0012] The body frame 11 (FIG. 1) for connecting the transmission case 3 and the engine side in front of the seat 2b is covered in a downward U-shape while the rear end of the bonnet 10 is positioned from the base side of the handle 2a. A fuselage cover 52 covering the periphery is formed, and a step cover 53 serving as a step of the control unit 2 is integrally formed with the fuselage cover 52 extending from the lower side to both sides.

Note that the fender 5 in this embodiment is
Is molded from a synthetic resin using a metal mold, but it can also be produced by FRP molding, and in some cases, can also be produced by iron plate processing or the like.

Further, the fender 5 is also provided with the hood 10 and the body cover 52 or the step cover 53.
It is also possible to form a series up to. Further, the body cover 52 and the step cover 53 are connected to the bonnet 1.
0 and the case cover 51 may be divided.

Next, the seat 2 constituting the control unit 2 will be described.
The mounting structure of b will be described.

As shown in FIGS. 3 and 4, the front bottom of the seat 2b is pivotally supported by a mounting portion 6 provided at the front of the transmission case 3, and the rear bottom of the transmission case 3 is It is configured to be supported by the mounting portion 6a provided on the upper surface.

The front mounting portion 6 has a mounting shaft 6 protruding from the front center portion of the transmission case 3.
1 is opened laterally, and the mounting shaft 61 is inserted into the shaft hole 62 and the other bracket 63 side from one bracket 63 side projecting from both sides of the bottom of the seat 2b. The structure is such that the seat 2b is directly attached to the transmission case 3 directly.

As shown in FIG. 3, the bracket 63 in the illustrated example has a plurality of shaft support holes 65 opened in front and rear, so that the plurality of shaft support holes 65 can be selectively selected and mounted. By pivotally supporting the seat 61, the position of the seating position of the seat 2b in the front-rear direction can be easily adjusted.

The transmission case 3
As shown in FIG. 4, a transmission case 3a formed in two right and left divisions is fixed by abutment, and a two-part projection 60 is formed on each joint end side. Can be easily performed, and since the two projections 60 are combined, the shaft hole 62 can be formed long, and the mounting shaft 61 can be supported stably. It has the advantage that it can be done.

On the other hand, as shown in FIG.
The vibration isolating members 7 made of a rubber material or the like are fitted into mounting holes 66 formed in the left and right protruding portions of the upper surface of the transmission case 3 and fixed by the stopper ribs 67.

Therefore, at any of the seating positions where the seat 2b is moved back and forth on the upper surface of the transmission case 3, the left and right bottom surfaces can be stably supported. In the illustrated example, a stopper rib 67 is formed in which the upper edge of the mounting hole 66 is slightly protruded from the inner periphery of the hole, and can be easily fixed by press-fitting the vibration isolating member 7 into the mounting hole 66. In addition, since it is possible to easily escape by squeezing strongly upward, it is possible to replace the anti-vibration member 7 with a different hardness.

Then, as shown in FIGS. 3 and 2, the mounting portions 6, 6a are inserted into mounting portion holes 8, 8a opened before and after a case cover portion 51 of the fender 5 that covers immediately above the transmission case 3. At the same time, the mounting portion holes 8 and 8a are opened as small as possible in installing the mounting portions 6 and 6a, and the opening ratio of this portion to the fender 5 is reduced.

The fender 5 having the mounting structure for directly attaching the seat 2b configured as described above to the transmission case 3 has the left and right wheel cover portions 50 attached to the mounting portion 6.
Mounting holes 8a for mounting two mounting portions 6a
Are separately formed, and are integrally formed continuously by the case cover portion 51 having an opening area as small as possible.

Therefore, the rigidity and strength of the fender 5 can be configured without damaging the conventional fender having a large notch for attaching the seat 2b, and the fender 5 can be prevented from being twisted or deformed. With
In the molding process, there is no need to form a large opening as in the conventional case using a mounting frame for fixing the seat 2b. As a result, a mold for forming a cutout hole is not required, and a simple molding mold is used. Can be used to reduce the production cost.

The case cover portion 51 having the opening area as small as possible as described above can be easily formed integrally with the wheel cover portion 50 with a smooth shape. Since the upper part of the transmission case 3 can be covered well with a large area, it is possible to accurately prevent dust and rainwater from entering between the transmission case 3 and the rear wheel 1b. Since the intrusion is also prevented, there is an advantage that the car washing operation can be easily performed without complication.

In the seat 2b having the above-described mounting structure, the front mounting portion 6 and the rear mounting portion 6a are formed in the transmission case 3, and the vibration isolating member 7 is directly mounted on the mounting portion 6a. Therefore, a mounting frame is not required, so that a low sitting posture can be taken, and stable operation can be performed.

The mounting of the anti-vibration member 7 for supporting the rear side of the seat 2b is easy.
Is rotated forward about the front mounting shaft 61,
There is an advantage that the vibration isolating member 7 can be left so as to close the mounting portion hole 8a. Further, since the vibration isolating member 7 is fixed to the transmission case 3 side, the seat 2b only needs to form a flat receiving surface.
There is also an effect that the structure of b can be simplified.

[0028]

As is clear from the above description, in the fender structure of the traveling vehicle according to the present invention, the seat 2b is attached from the transmission case 3 to the case cover portion 51 of the fender 5 by directly attaching the seat 2b. Since the mounting hole for installation was opened, the fender 5
Can be manufactured at low cost while increasing the rigidity, and the intrusion of dust, water, etc. into the transmission case 3 can be satisfactorily prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a tractor.

FIG. 2 is a plan view of the tractor of FIG.

FIG. 3 is a side sectional view showing a main structure of a seat and a fender.

FIG. 4 is a front sectional view showing the structure of a front mounting portion of the seat.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tractor (running vehicle) 2 Driver's seat 2b Seat seat 3 Transmission case 5 Fender 6, 6a Attachment part 7 Anti-vibration member 8, 8a Attachment part hole 50 Wheel cover part 51 Case cover part 52 Body cover part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuya Kijima 667 Idai-cho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. 667 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (reference) 3B087 CC02 3D003 AA01 AA07 AA18 BB13 CA54 CA56 DA08 DA19

Claims (2)

[Claims] 1. A traveling body 1 having a front wheel 1a and a rear wheel 1b.
c, the seat 2b is attached to the transmission case 3 via the attachment portions 6, 6a which can be directly attached to the transmission case 3, and the wheel cover 50 covers the left and right rear wheels 1b and the case cover 51 covers the transmission case 3.
And a fender 5 integrally formed, and mounting portion holes 8, 8a for simply mounting a mounting portion on the case cover portion 51.
The operating section structure of a traveling vehicle with an opening. 2. The steering section structure for a traveling vehicle according to claim 1, wherein a vibration isolating member 7 for supporting the seat 2b with vibration isolation from the transmission case 3 is mounted on the transmission case 3 side.