JP2809242B2 - Combine crawler traveling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine crawler traveling device.

[0002]

2. Description of the Related Art The conventional crawler traveling device is configured such that a lower contact surface portion is substantially straight over substantially the entire area, and a substantially lower lower contact surface is in a flat hard disk contact state. The distance from the center of gravity to the front end of the contact portion is set to be about 40 to 45% of the entire length of the contact portion. For example, 63-1
No. 80481).

[0003]

In the above-mentioned conventional structure, the front side of the fuselage is likely to be lifted up due to the traveling driving reaction force when traveling in a wet field. This is to ensure the stability of the posture during running. However, in the combine,
A grain tank for storing grains is provided at the rear of the machine, and as the grains are stored in the tank as the mowing travels, the weight increases and the rear weight becomes too heavy, and the rear of the machine greatly sinks. And the running stability may be degraded. In particular, the above problem is remarkable in a soft wet field or when an attachment such as a heavy stirrer binding device is attached to the rear of the machine. An object of the present invention is to solve the above disadvantages by rational improvement.

[0004]

According to a feature of the present invention, a first distance from a position below the center of gravity of the machine to the rear end of the crawler traveling device is defined as a front end of the crawler grounding portion in a flat hard disk grounding state from the position below the center of gravity of the crawler. And a third distance from the position below the center of gravity of the crawler to the rear end of the crawler contact portion, and the third distance from the position below the center of gravity of the machine to the front end of the crawler contact portion. The distance is set to be approximately 1.5 times the two distances, and the ratio of the magnitude of the first distance based on the third distance is the ratio of the magnitude of the third distance based on the second distance. The point is that the rear side of the lower surface side of the crawler traveling device with respect to the crawler ground contact portion is formed to have a gentle upward slope.

[0005]

The first distance L from the position below the center of gravity to the rear end
1 is a second distance L2 from the position below the center of gravity of the aircraft to the front end.
Is set to be at least twice as long as the total distance that the crawler traveling device can contact the ground, so that it is possible to suppress sinking into the mud, and the second distance L2: the third distance L3
Is set to 1: 1.5, the lifting of the front part of the body during forward running can be reduced without impairing the turning performance, and the first distance L1 based on the third distance L3 can be reduced.
Is set so as to be larger than the ratio of the size of the third distance L3 based on the second distance L2, so that the contact length of the crawler traveling device is not greatly increased. Even if the rear part of the wetland is submerged near the hard plate in the mud by reducing the amount of protrusion to the rear, the aircraft inclination angle can be suppressed to a small value compared to the amount of subsidence . In particular, since the rear portion of the lower surface side of the crawler traveling device is formed in a gently inclined shape that rises rearward, muddy soil can easily escape from the clearance of the rearward rising portion when turning in a field, and the driving force at the time of turning operation Can be suppressed as small as possible, and the positional relationship of the center of gravity of the machine with respect to the crawler ground contact portion in the flat hard ground contact state can be set to the same pre-balance state as in the past, so that traveling on relatively hard fields or roads In this case, the driving feeling is the same as the conventional one, and the driving safety is ensured.

That is, considering turning performance on dry fields and roads, the ratio of the second distance L2: third distance L3 is ideally 1: 1 from the viewpoint of reducing the resistance during turning, but in the present invention, the ratio is 1: 1. : 1.5 so as to effectively receive the driving reaction force in the direction in which the front part of the aircraft is lifted during forward movement without impairing the turning performance. Also, considering driving in wetlands,
Increasing the value of the second distance L2 + the first distance L1 as much as possible reduces the degree of subsidence. However, considering turning in wetlands, the first distance L1 from the surface of resistance from wetlands is considered.
Cannot be increased so much. Therefore, in the present invention, as described above, the ratio of the magnitude of the first distance L1 based on the third distance L3 is determined by the third ratio based on the second distance L2.
By setting the ratio larger than the ratio of the distance L3, it is possible to suppress the settlement of the crawler traveling device without impairing the turning performance.

[0007]

Therefore, good turning can be performed on both wet and dry fields in consideration of the difference in turning characteristics between the wet and dry fields within a limited contact length range, and a desired settlement resistance can be obtained in the wet field. Thus, a crawler traveling device capable of traveling the aircraft in a state where the attitude of the aircraft is stabilized was rationally configured.

[0008]

Embodiments will be described below with reference to the drawings. FIG.
Shows a combine crawler traveling device. This crawler traveling device is configured by winding an endless rubber crawler belt 4 around each of a front driving wheel 1, a rear tensioning wheel 2, and a plurality of ground contact guide wheels 3. Each of the wheel bodies 1, 2, 3 is supported by a track frame 6 connected to a body frame 5 for mounting and supporting a body (not shown),
The grounding guide wheel 3 has a plurality of core metal projections 7 protruding from the inner surface of the belt.
To prevent the crawler belt 4 from coming off.

The first distance L1 from the position X below the center of gravity G of the machine to the rear end of the crawler traveling device is the second distance L2 from the position X below the center of gravity of the machine to the front end of the crawler grounding unit 8 in the flat hard disk grounding state. The distance L2 is set to be at least twice the distance L2, and the third distance L3 from the position X below the center of gravity of the machine to the rear end of the crawler contact portion 8 is set to the position X below the center of gravity of the machine.
From the front end of the crawler contact portion 8 to the front end of the crawler contact portion 8
And the ratio of the magnitude of the first distance L1 based on the third distance L3 to the magnitude of the third distance L3 based on the second distance L2. And a portion 9 on the lower surface side of the crawler traveling device, which is rearward of the crawler contact portion 8, is formed to have a gently inclined shape that rises rearward. For example, when a combine for five-row cutting is shown as a specific numerical value, for example,
Distance from the front end of the crawler contact portion 8 to 600
When the distance is set to millimeters, the distance from the lower center of gravity X to the rear end of the crawler traveling device is set to about 1200 mm or more, and the distance from the lower center of gravity X to the rear end of the crawler grounding unit 8 is: About 900 millimeters. Therefore, the total length of the crawler ground contact portion 8 is about 1500 mm, and the front-rear length on the lower surface side of the crawler traveling device is about 1800 mm or more. With this configuration, as shown in FIGS. 2 and 3, assuming that the thickness H of the mud surface is constant, the downward inclination angle caused by the rear sinking of the fuselage is smaller than that of the conventional configuration.
It will be small. Further, at the time of the turning operation, the muddy soil can escape from the gap S on the lower surface side of the crawler traveling device, and it is possible to suppress an increase in the driving reaction force.

[0010] In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a side view of a crawler traveling device.

FIG. 2 is a side view of the crawler traveling device showing a muddy surface submerged state.

FIG. 3 is a side view showing a submerged mud surface in a conventional structure.

[Explanation of symbols]

 8 Crawler ground contact part L1 First distance L2 Second distance L3 Third distance X Lower position of machine body weight center

Claims (1)

(57) [Claims] 1. A first distance (L1) from a position below the center of gravity of the machine (X) to a rear end portion of the crawler traveling device is defined by a distance between the position below the center of gravity of the machine (X) and the ground contact portion of the crawler (8) in a flat hard disk grounding state. The second distance (L2) to the front end is set to be twice or more, and the third distance (L3) from the position below the center of gravity of the machine to the rear end of the crawler contact portion (8) is set to the position below the center of gravity of the machine ( X) is set to be approximately 1.5 times the second distance (L2) from the front end of the crawler contact portion (8),
Also, the first distance based on the third distance (L3)
The ratio of the size of (L1) is based on the second distance (L2).
Greater than the ratio of the size of the third distance (L3) based on the standard
The crawler traveling device of the combine, wherein the rear surface of the crawler traveling device is set so as to be slightly inclined so as to rise rearward on the lower surface side of the crawler traveling portion (8).