JPS6313988Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an elastic endless track belt installed on agricultural vehicles such as combine harvesters, or similar vehicles, and is particularly suitable for running on muddy terrain (hereinafter referred to as crawler). ).

Generally, a crawler has protruding lugs on its outer circumferential surface to increase traction force, and these lugs are formed in parallel at regular pitch intervals in the circumferential direction of the crawler. Such crawlers do not pose any particular problems when running on relatively hard roads, but when running on soft roads, wetlands, wet fields, etc., mud accumulates between the lugs, causing the crawler to form a so-called belt-like structure. This often causes the bicycle to slip and interfere with driving.

In order to avoid this, crawlers have been proposed in which the distance between the lugs is widened to facilitate the shedding of mud. However, on the other hand, the running surface of the running wheels becomes soft between the lugs, and the upper part of the lugs is stiffer. Because the aircraft is unbalanced, the wheels move up and down when driving on hard roads, causing vibrations in the aircraft.

To deal with such machine vibration, short auxiliary lugs may be placed between regular lugs placed every two pitches, or lugs slightly shorter than the crawler width may be placed alternately at every pitch in a staggered manner. Measures are being taken to prevent the wheels from falling. In this case, the spacing between the lugs is divided into a 2-pitch space and a 1-pitch space, and mud removal from the 2-pitch space on the sides of the crawler is good, but the mud in the center
There is still a drawback in that the mud is not easily removed in the pitch spaced areas, and sufficient traction force cannot be obtained.

The purpose of the present invention is to provide a lug arrangement that allows good mud removal at any location between the lugs, and the feature of the crawler of the present invention that achieves this purpose is that the lugs are ,
A pair of lugs that are divided at the center and reach the edges in the width direction of the endless band-shaped elastic body, and short lugs that are formed opposite to the central divided portion of the pair of lugs are alternately provided. It is in the fact that

The present invention will be described in more detail below with reference to the accompanying drawings.

FIG. 1 shows a part of the outer circumferential surface of a crawler according to a first embodiment of the present invention, which extends in the lateral direction of the drawing and is made endless. In the figure, 1 is made of an elastic material such as rubber. 2 is a core metal embedded in the elastic body at regular intervals in the circumferential direction; 3 is a sprocket hole provided between the core metals in the center of the elastic body; 4a and 4b are embedded core metals. These lugs are provided on the ground surface side of the elastic body in accordance with the positions. As shown in the figure, the lug 4a corresponding to a certain core bar 2 is formed separately and reaches the widthwise edge of the endless band-shaped elastic body, and further extends to approximately 1/3 of the crawler width in the central part. It has been interrupted,
Further, the short lug 4b corresponding to the adjacent core bar 2 is formed facing the above-mentioned interrupted range. Therefore, when looking at the lugs in the circumferential direction of the crawler, the two adjacent lugs 4a and 4b are arranged so that they do not substantially overlap. Therefore, as is clear from the figure, the distance between the lugs 4a, 4a or 4b, 4b adjacent to each other in the circumferential direction of the crawler is two pitches, and the mud caught between them easily falls off.

FIG. 2 shows a case where the separating lugs in FIG. 1 are replaced with bent and inclined lugs.

As described above, according to the present invention, since lugs are provided corresponding to each core metal, there is no significant difference in machine vibration caused by the vertical movement of the wheels compared to a normal crawler, and the spacing between the lugs is Since all the pitches are 2 pitches or more, mud is easily removed and driving performance in wet fields is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a part of the crawler according to the present invention, viewed from the outer peripheral surface side, and FIG. 2 is a plan view showing another embodiment of the present invention. The correspondence relationship between the main parts shown and the symbols is as follows. 1... Endless band-shaped elastic body, 2... Core bar, 4a...
...Divided lug, 4b...Short lug.

Claims (1)

[Scope of utility model registration request] In an elastic endless track belt in which lugs protruding toward the ground surface corresponding to the positions where the core metals are buried are provided on an endless belt-shaped elastic body having core metals buried at regular intervals in the circumferential direction, the lugs are separated at the center. a pair of lugs reaching the widthwise edges of the endless band-shaped elastic body;
An elastic endless track belt characterized in that short lugs are alternately formed to face the center dividing part of the pair of lugs.