JPS6220380Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention is a combine harvester crawler in which a pre-reaping section, which is narrower in width than the overall width of the left and right crawlers, is connected to the front part of a traveling machine equipped with left and right crawlers with equal longitudinal lengths, and is offset to one side of the machine. Regarding traveling equipment. Generally, the basic reaping mode of the combine harvester with the above configuration is to travel with the side where the reaping pre-processing section is deviated as the uncut side, and the frequency of turning to the side where the reaping pre-processing section is deviated is on the opposite side. is higher than that to. The crawler running device of the combine is equipped to prevent the machine from sinking in wet fields, but in extremely soft or viscous wet fields, mud can become clogged between the lugs protruding from the outer surface of the crawler. ,
The soil may be sheared and a so-called slip phenomenon may occur, making it impossible to obtain sufficient thrust.In particular, when the drive of one crawler is cut off and steering is performed using only the thrust of the other crawler, and long crawlers are used in the front and rear. When making a turn by moving sideways, the propulsion resistance during the turn is considerably greater than when moving straight, so as mentioned above, the reduction in thrust due to mud clogging will significantly reduce turning performance. It was hot. In addition, as a means of increasing the thrust of the crawler traveling device, it has been considered to form notches at an appropriate pitch on the side edges of the crawler, but as the crawler travels in wetlands, it is considered that the crawler may penetrate into the inner circumferential surface of the crawler through these notches. There is a phenomenon in which mud adheres and grows and becomes a large clod, which rolls out of the crawler. If such a thrust increasing function is given to the crawler corresponding to the uncut side, the rolled-out clod can cause the uncut stem culm to fall. Another problem arises in that it may be pushed over or become an obstacle during the next process of reaping. The present invention focuses on this point, and by rationally configuring the side edges of the crawler in an uneven shape, the above-mentioned troubles can be suppressed and the crawler running can obtain good propulsion and turning performance. The purpose is to provide equipment. Next, embodiments of the present invention will be described based on the drawings. As shown in Fig. 1, a threshing device 3 is mounted on a traveling machine 1 equipped with a crawler traveling device 1 and a control section 2, and a threshing device 3 is mounted on the front of the machine to raise the stems and culms planted in the field. A reaping pre-processing section 5 that transports the reaped stem culms to the feed chain 4 of the threshing device 3 at the rear of the machine body is connected in a vertically movable manner, and this reaping pre-processing section 5 is connected to the left and right crawlers 1a and 1b. It is made narrower than the overall width and is offset to one side of the machine on the opposite side from the control section 2, so that The combine harvester is configured so that the basic reaping mode is circular mowing or reciprocating mowing with the left side being the uncut field side. As shown in FIGS. 1 and 2, the crawler traveling device 1 includes a drive wheel body 7, a driven wheel body 8, and a plurality of guide wheels 9, which are mounted on a pair of left and right track frames 6. Rubber crawlers 1a, 1b having propulsion lugs 10 protruding from the contact surface at appropriate pitches in the longitudinal direction were wound around the rubber crawlers 1a, 1b, and the pre-reaping treatment parts 5 of the left and right crawlers 1a, 1b were deviated. Both side edges A and B of one of the crawlers 1a on the side are formed into straight side edges, respectively, and the other crawler 1b has a notch 1c formed in only the outer edge D so that the sum of the notch areas is relatively large. It is constructed with uneven side edges formed at appropriate pitches in the length direction, and when driving on soft ground, the propulsive force is generated through the cooperation of the uneven side edges D that penetrate into the ground and the propulsion lug 10. In addition, it improves the leftward turning performance in the basic cutting mode in which the machine runs with the uncut stem culm along the left side of the machine, and also improves the ability to turn to the left due to the uneven side edge D as the machine runs. The structure is designed to prevent lumps from falling onto the uncut land side. As shown in FIG. 3, a relatively large notch 1c is cut into the outer edge A of one of the crawlers 1a on the side from which the reaping pre-processing section 5 is displaced so that the sum of the notch areas is relatively small. An uneven side edge formed with a rough pitch in the length direction, an inner edge B formed in a straight line, and both side edges C and D of the other crawler 1b are uneven side edges with a relatively large sum of notch areas. Configure it to
It may be configured to significantly improve the propulsion force and turning performance while suppressing troubles caused by lumps of mud on the uncut land side. In addition, this invention improves propulsion while
As a result, mud enters the inner peripheral surface of the crawler winding, and the mud that enters gradually grows as it travels and falls to the outside of the left and right crawlers, pushing down uncut stems or moving to the next process of reaping equipment. As a means of suppressing the occurrence of troubles associated with muddy soil, such as jamming, it is possible to adopt a combination of side edge shapes of the left and right crawlers 1a, 1b as shown in the following table.

【table】

[Table] In addition, A is the outer edge of one of the crawlers 1a on the side where the reaping pretreatment part is deviated, B is the inner edge of the crawler 1a, C is the inner edge of the other crawler 1b, and D is the other crawler. Indicates the outer edge of 1b, O is a linear side edge shape without unevenness, S is an uneven side edge shape where the sum of the notch areas is relatively small, and L is an uneven side edge shape where the sum of the notch areas is relatively large. It shows the shape of the side edge. Further, as a means for configuring the sum of the notch areas into relatively small uneven side edges, relatively small notches 1c may be formed with small pitches, as shown in FIG. As is clear from the above description of the embodiments, the structural features of the present invention devised to solve the problem are as follows: , a linear side edge, or an uneven side edge with a smaller total notch area formed on the side edge than the outer edge D of the other crawler 1b, and both side edges of each crawler. The point is that the sum of the areas of the notches formed in the other crawler 1b is larger than that of the one crawler 1a, and this characteristic configuration produces the following effects. In other words, the outer edge A of the crawler 1a located on the side to which the reaping pre-processing section 5 is deviated, that is, on the uncut land side.
By configuring the side edge shape to have an uneven or linear side edge shape with a relatively small sum of notches, it is possible to reduce the intrusion of mud from the notches and its growth as described above, and prevent problems caused by clods. While suppressing this, it is now possible to obtain good propulsive force and turning performance even with the uneven side edges formed on the other crawler 1b. 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 crawler traveling device for a combine harvester according to the present invention, and FIG. 1 is an overall side view of the combine, FIG. 2 is a schematic plan view of the combine, and FIG.
4 and 4 are schematic plan views showing the deformed structure. 1a, 1b... Crawler, 1c... Notch, 5
...Reaping pre-processing section, 11...Traveling machine, A, D...
... Crawler outer edge, B, C... Crawler inner edge.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of left and right crawlers 1a with equal front and rear lengths,
In the crawler traveling device of a combine harvester, in which a pre-reaping treatment section 5 having a width smaller than the entire width of the left and right crawlers 1a and 1b is connected to the front part of a traveling device 11 equipped with a traveling device 1b, which is offset to one side of the vehicle, One crawler 1a on the side where the processing section 5 is displaced
The outer edge A of the other crawler 1b is formed into a linear side edge or an uneven side edge with a smaller total notch area formed on the side edge than the outer edge D of the other crawler 1b, and each A crawler traveling device characterized in that the sum of the notch areas formed on both side edges of the crawler is larger in one crawler 1b than in the other crawler 1a. 2. The uneven side edge A of the one crawler 1a is formed by forming relatively large notches 1c with a coarse pitch.Claim 1 of Utility Model Registration
The crawler traveling device described in section. 3. The uneven side edge A of the one crawler 1a is formed by forming relatively small notches 1c with small pitches.Claim 1 of Utility Model Registration
The crawler traveling device described in section. 4. The crawler traveling device according to any one of claims 1 to 3, wherein the other crawler 1b has only an outer edge D formed into an uneven side edge. 5 The other crawler 1b has inner and outer edges C, D
A crawler traveling device according to any one of claims 1 to 3, wherein the crawler traveling device has uneven side edges. 6. The crawler traveling device according to any one of claims 1 to 5, wherein the inner edge B of the one crawler 1a is formed into an uneven side edge.