JPS6228536Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rubber crawler of a crawler type traveling device that is mainly installed in a combine harvester.

In recent years, such rubber crawlers have been developed by reducing the amount of protrusion of the propulsion lug on the ground side of the crawler as much as possible to suppress running vibrations when running on the road and reduce mud pushing resistance when turning in wet fields. In order to obtain sufficient propulsion force, as shown in FIG. A recess 11 that opens both vertically and laterally outwardly, or as shown in FIG. A recess 12 has been developed that opens downward and laterally outward at the rotational part of the earth contact, but in the case of the former, the soil that has entered the recess is smoothly pushed out as it touches the ground. Although it is possible to always obtain a strong propulsive force due to the reliable soil scraping action of these recesses, the large amount of soil pushed out from the recesses toward the inner circumferential surface of the crawler belt may form lumps. Especially in the case of combine harvesters, if the clods of soil roll down to the uncut side, it can easily cause problems such as uneven cutting height and damage to the cutting blades during the next cutting. Also, in the latter case,
Since the soil that has entered the recess is not pushed out toward the inner peripheral surface of the crawler belt, it is possible to avoid the occurrence of travel as described above. However, the soil that has entered the recess does not easily escape, and insufficient propulsion There is a problem with not being able to gain power.

In view of the above-mentioned circumstances, the purpose of the present invention is to suppress the growth of clods inside the crawler belt as much as possible while exerting sufficient propulsion force. At the side edge of the crawler belt, a first type recess that opens vertically and laterally outwardly and a second type recess that opens downwardly and laterally outwardly at the ground rotation portion of the crawler belt are installed. They are characterized in that they are formed at different positions in the rotation direction.

In other words, by forming a combination of a type 1 recess from which soil can be smoothly discharged and a type 2 recess from which dirt does not push out toward the inner peripheral surface of the crawler belt on the side edge of the crawler belt, both of these can be achieved. While exerting sufficient propulsive force through the soil scraping action in the seed recess, it is possible to reduce as much as possible the amount of infiltrated soil extruded toward the inner peripheral surface of the crawler belt, and this extruded soil It has now been possible to avoid the above-mentioned troubles caused by growth in large clumps.

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, the crawler traveling device installed in a combine harvester consists of a drive wheel 2 using a sprocket that is pivotally supported diagonally above the front end of a truck frame 1, and a drive wheel 2 that uses a sprocket and is attached to the rear end of the truck frame 1. A rubber crawler A is suspended over a driven wheel 4 which is pivotally supported so that its position can be adjusted and fixed back and forth via a tension adjustment operation mechanism 3, and the inner circumferential surface of the crawler portion on the ground contact rotation side of the rubber crawler A. A plurality of rolling wheels 5 are rotatably supported by the track frame 1 while being in contact with the track frame 1.

As clearly shown in FIGS. 2 and 3, the rubber crawler A is positioned at a central position in the width direction of the crawler belt 6 at a constant interval in the crawler rotating direction for engagement and driving by the drive wheel 2. A rubber reinforcement having a pair of left and right protrusions 8, 8 for preventing derailment that protrudes toward the inner circumferential surface of the crawler belt 6, respectively, between adjacent holes 7 for engaging and driving. The core metals 9 are buried at a constant pitch, and lug protrusions 10 projecting outward are integrally formed on the outer circumferential surface of the crawler belt 6 at locations corresponding to the buried core metals 9.

First-class propulsion recesses 1 are provided on both sides of the crawler belt 6 in the width direction, respectively, and open upwardly and downwardly and laterally outwardly at the ground-contact rotating portion thereof.
1 and second type propulsion recesses 12 opening downward and laterally outward are formed so as to be alternately located at predetermined intervals in the crawler rotation direction, and the first type recesses 11... The width in the crawler rotation direction of the adjacent core metals 9 is approximately equal to the opposing interval between the adjacent core metals 9, 9..., and the width of the crawler rotation direction of the second type recess 12... is the same as the width of the adjacent core metals 9 in the crawler rotation direction. ,9...
The second type concave portions 1 in the crawler belt 6
The ceiling wall portions 6a of 2... are bulged out so as to protrude toward the inner circumferential surface side of the crawler belt 6 than the upper surface of the main body central portion 6b which is continuous thereto.

The width, shape, formation position, etc. of both types of recesses 11, 12 in the crawler rotation direction may be appropriately designed depending on various conditions.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the rubber crawler according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view of main parts, Fig. 3 is a cross-sectional view taken along the - line in Fig. 2, Fig. 4, Fig. FIG. 5 is a plan view of the main parts of a conventional rubber crawler. 6... Crawler belt, 11... First class recessed part, 1
2...Type 2 recessed part.

Claims (1)

[Claims for Utility Model Registration] 1. On the side edge of the crawler belt 6, a first-class recess 11 that opens both vertically and laterally outward at the ground-contact rotating portion thereof, and a first-class recess 11 that opens downwardly and laterally outwardly. A rubber crawler characterized in that type 2 recesses 12 are formed at different positions in the rotational direction of the crawler belt. 2. The rubber crawler according to claim 1, wherein the two types of recesses 11, 12 are formed to be alternately located in the rotational direction of the crawler belt.