JPS6025860A - Body of tractor - Google Patents

Abstract

PURPOSE:To eliminate the danger of the collision of front wheels with right and left frames even if front wheels are steered sufficiently large, and makes the turning radius small by a method wherein the front of right and left frames are formed so as to be in a higher position than the front wheels. CONSTITUTION:The right and left frames 1, which are extended from front to rear, are formed in a bent shape so that forward parts 1a are situated higher than rear parts 1b. And the lower surface of the forward parts are situated higher than right and left front wheels 19, and forward parts are connected to each other with a forward member 2, and each rear member 3 is secured at the rear of the right and left frames 1. Futhermore, a car body 9 is formed by attaching rear members 3 to the right and left rear accelerator housings 5, which are connected to the right and left rear of a transmission case 4 and also by attaching a reinforcement plate 7 with bolts 8 to the right and left frames 1 so as to cover the lower part of the transmission case 4.

Description

[Detailed description of the invention] This invention relates to a single tractor.

In order to obtain a small tractor with low horsepower and a turning radius as small as possible, it is necessary to make the tread as narrow as possible, but the left-right width of the engine is determined by horsepower, and this width prevents narrowing the tread. Since the horse speed is determined by the required plowing width, if a predetermined plowing width is not ensured, the left and right width of the engine and the tread will become wider, making it impossible to make small turns. If the tread is narrowed regardless of the horizontal width of the engine, the engine will be mounted higher, resulting in an unstable tractor with a high center of gravity.

Therefore, in this invention, the tread is narrowed and the tread is small, and the center of gravity is low, making it a highly stable tractor, and the following technical means are provided.

In other words, the front parts (Ia) (la) of the left and right frames f+) (11, which are elongated in the front and back, are moved upward with respect to the rear part (Ib) (lb) so that they are at a higher position than the front wheels f11 (1!l). Left and right frames (IXI) formed in a bent shape and supported by dropping the lower part of the engine Cl31
The above-mentioned front parts (la) (la) of the above are bridged and connected with the front axle bracket aω, and the left and right frames (J) (
The rear part (lb) of 1) is connected to the body of a tractor by a rear axle housing (5).

With this configuration, the present invention has the following technical effects. That is, the front parts (la) (Ia) of the left and right frames (1) (1) are connected to the front vehicle 4i1i! 1+1tl
Since it is formed to be at a higher position than the front wheel (1'J (19)), even if the steering wheel is turned with a sufficiently large pressure, the front wheel fllt19 will collide with the left and right frame fl (1). There was no danger of this happening, and the turning radius became significantly smaller.Also, since the lower part of the engine was supported so as to drop between the left and right frames (1) fl), the lower part of the engine [K] was supported and the center of gravity was lowered. It became a good tractor with low stability.

In addition, in the second invention, the front and rear of the 70-point axle bracket αQ and the left and right frames (1) (+1 are
+1! Since the reinforcing member (Kasumi+281 t fJI) GD is located laterally inward than the maximum turning position of J(In), the left and right frames (+, )fl) are connected to each other. Front axle bracket O9
And, the front part (la) (la) is firmly connected by the reinforcing member @@, (llc311, and the rear part (lb) of the left and right frame (J) (1) is firmly connected by the rear axle housing (5) (5) ( lb) are connected to form a strong vehicle body (9).Then, the reinforcing member 12
1r<s, C (IIC311 is the front part (la) of the front axle bracket 4 and the left and right frames (1) (+)
) The vertical bending property of (la) is particularly strengthened by its bridge-like mounting, and for example, when a working machine such as a front loader is attached to this front part (la), it is possible to By installing the front axle bracket (to) cl, C4N+),
The mounting rigidity for the left and right frames of the field is strengthened, making it possible to provide sufficient lci for the use of such working equipment. Also, reinforcing member (c) +28), C3
+1C (11H car in front M (1 (jtti) inward [Atte,
I was able to perform the sono-turning motion without any problems.

Next, a practical example of this invention will be explained. As shown in Fig. 1 as a side view of the tractor and as shown in Fig. 2 as a plan view, the left and right frames (1) (1), which are long in the front and back, are connected to the front part (la).
(la) is formed into a bent shape so that it is at a higher position than the rear (lt)) (Fb), and the left and right front wheels CI 1
(The lower surface of this front part (-1a) (la) should be in a higher position than 19, and the front end member (2) which is the front end of the sled)
The rear end member (3) + 3 is connected to each other at the side view path.
Left and right rear axle housings f5)+5)[, rear members (3) (3) are fixed to the rear parts of the left and right frames (1) (1), respectively, and are connected to the left and right rear parts of the transmission case (4), respectively. Attach with bolts (6)..., and install the left and right frames (1) (1) K reinforcing plate (7) with bolts (8) so as to cover the lower part of the transmission case (4). It is configured on the vehicle body (9). Left and right frames (1
) (1) As the material, use a steel material having a rectangular box-shaped cross section as shown in the illustration, or a mouth-shaped, ■-shaped, or I-shaped cross section.

Front axle bracket (11 is the 6th bracket in the illustrated example)
The main body part Uυ of the bracket is shown in perspective in the figure, and the pivot receiving part tla shown in FIG. 7 is formed separately. However, the bracket body part aD has a mounting part (13a) equipped with a half-cylindrical concave part (13a) as shown in FIG.
Extend the inclined plate part 04)+1 (a) which has a cross-shaped character in front view from + to the left and right, and make the inclined plate part (outside part of
051 is fixed to the left and right frames (1, 11). The pivot receiving part (12 refers to the mounting part Oe with the half-cylindrical convex part (16a) is the mounting part (13) of the old bracket main body part).
from below, align the bolt holes (16b)... with the female threaded holes (13b)... of the mounting part 13), and connect the bracket main body (1υ) with the holes (17)... Attach the pivot receiver 07J, attach the head (211) at the center of the left and right of the front axle housing I:JJ that supports the front wheel (1!Jil!*) to the pivot receiver (1!
Pivot holes (12a) (1
2a) and the pivot hole (c) of the head eυ and are inserted through these holes (centerbin R24), so that the vehicle body (9) rotates around this centerbin C24). This front axle bracket 0 may be formed by integrally pressing and molding the bracket living body part (lυ) and the pivot receiving part (12).

And the front part (1=) of the left and right frame +11 (1) (
Ia) are connected by the horizontal rod, and the brackets (B) fixed on the left and right sides of the horizontal rod (C) and the bracket main part (1υ
Mounting part (13 front left and right brackets @ (2)
Bolt (to) the reinforcing member (2) (to) bridged between
..., and a bridge was created between the brackets (to) (to) installed on the rear left and right sides of the mounting part side of the bracket living body part aυ and the front parts (la) (Ia) of the left and right frames (1) (1). Reinforcement member 3υ circle, Pol) G3;! 5..., and in the installed state, the reinforcing member (to) and Mll are positioned inward in the left-right direction from the maximum turning position of the front wheel 119αl, so that the mounting position in the left-right direction is determined. The reinforcing members (18, +311) may be of any type as long as they have the above-mentioned functions, and may have various shapes.

As shown in Fig. 4, the engine (to) is inserted between the front parts (la) and (la) of the left and right frames (1) + 1), and the lower part of the engine (towards) is inserted into the front part (la) through the anti-vibration device. (l
The bearing body (to) of the clutch housing (c), which is supported on a) and attached to the rear of the engine (to), is fixed to the rear (Ib) (lb) Ic bridge of the left and right frames (1) (1). It is supported on the horizontal rod G71 via a vibration isolator □□□.

The example shown is the front vibration isolator 1341 G341 & the mounting decoy t4 (1) attached to the left and right sides of the engine (bolts) and the front part (la) of the left and right frames (I) (1).
(la) The anti-vibration rubber (421 (42) is sandwiched between the bracket (41) (4υ) fixed to the bracket (la), and the movement is stopped with bolt lA3. (
Although not shown, the front vibration isolator may be fixed to the inclined plate part (41) of the bracket main body part (
[4) Pressure between G4) and the left and right sides of the engine may be provided, and the shape of the vibration isolator may be 0J! You may use any of the following.

In addition, the rear vibration isolator (to) shown in the example is a pole between the bearing bodies.
(The mounting bracket 4 → installed with 441c and the horizontal rod (pol on top of 3θ) The bracket installed with t4Gl (with anti-vibration rubber H interposed between ) is fixed to the bracket (4η), and the legs (, f, I) (45a) provided at the front and rear of the fixture (4c9) are fitted with anti-foam rubber (double). The vibration isolator ■ can also be used in various shapes.

The output of the engine (G) is input from the main clutch housed in the clutch housing to the input shaft 15+ of the transmission mechanism via the universal joint shaft (41), which is supported by the bearing (to). Since the engine C is supported at a sufficiently low position, it is lower than the output shaft of the main clutch (11 is the input shaft 51 of the transmission mechanism). The support position of the tractor is lowered, and the center of gravity of the tractor is lowered.
Further, the visibility ahead as seen from the driver's seat 6a is improved. And the rear part (11) of the left and right frame (1111))
(lb) is at a lower position than the front part (Ia) (la), so if the rear part (lb) (lb) K is provided with a step, for example, it will be convenient for getting on and off. The bearing body (2), the output shaft ((I), the space between the universal joint shafts, etc. are covered with a saddle-shaped cover Q.

Further, in the illustrated example, power from a power take-off shaft 6a at the front lower part of the transmission case (4) is used to drive the front wheel u1 via a universal joint shaft 69. Further, the symbol ■ is a radiator, and the symbol 6D is an oil pan.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view of the tractor, Fig. 2 is a plan view, Fig. 3 is an enlarged view of the main part of Fig. 1, and Fig. 4 is a partially cutaway side view of the tractor. Main Parts Figure 7 is a perspective view of the pivot receiver, and Figure 8 is a perspective view of the main parts of the front axle housing. Code explanation (1)...Left and right frame (Ia)...Front (]I
b...Rear (5)...Rear axle housing t
m...Front axle bracket/front wheel @6B...Reinforcement member Q...Engine patent applicant Iseki Agricultural Machinery Co., Ltd.

Claims (2)

[Claims] (1) The front parts of the left and right frames, which are long in the front and back, are bent upwards from the rear so that they are at a higher position than the front wheels, and the lower part of the engine is dropped to support the left and right frames. A tractor body in which the front part of the frame is bridged and connected by a front axle bracket, and the rear parts of the left and right frames are connected by a rear axle housing. (2) The front parts of the left and right frames, which are elongated from front to back, are bent upwards from the rear so that they are one neck higher than the front wheels, and the lower part of the engine is dropped into the support structure. The front parts of the left and right frames are bridged and connected with a front axle bracket, and the rear parts of the left and right frames are connected with a rear axle housing. A tractor body characterized in that the vehicle body is connected by a reinforcing member located laterally inward than the vehicle body.