JPS6341353B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rubber crawler used, for example, in the traveling device of a combine harvester.

The above-mentioned rubber crawler has the back side of its ground-contacting part supported by metal wheels, but since the metal and rubber come into contact, the rubber has the disadvantage of being extremely fatigued and unable to withstand long-term use. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rubber crawler that has high strength against the rolling wheels of the rubber crawler and has other excellent effects.

According to this invention, a metal rolling surface that contacts the rolling wheels is formed on the back side of the rubber crawler, so the rubber crawler does not come into direct contact with the rolling wheels, so compressive fatigue is extremely low and there is no peeling phenomenon. The lifespan is extended, and the rubber crawler can be made thinner.

Furthermore, since the rolling wheels roll on metal rolling surfaces, there is little friction and wear, and the rolling of the rolling wheels is continuous and smooth, resulting in good running with little vibration.

In addition, sprockets can be engaged without forming through holes in the rubber crawler as in the past, eliminating damage to the rubber crawler due to cracks from the through holes and improving durability. To provide a rubber crawler with good running performance by preventing the rubber crawler from coming off due to mud clogging through holes.

An embodiment of the present invention having such characteristics will be described in detail below with reference to the drawings.

The drawings show one embodiment of this invention, and in the first figure, 1 is a sprocket, 2 is an idler, 3...
is a roller, 4 is a guide roller, and an endless rubber crawler 5 is tensioned on these.The tension thereof is adjusted by a tension mechanism supporting an idler 2, so that the sprocket 1 receives driving force from the transmission 6. The rubber crawler 5 is rotated by.

In FIGS. 2 to 4, the rubber crawler 5 described above is mainly made of a rubber material, and a plurality of core cords 7 are buried in the endless length direction in the center, and on the ground surface side. It is provided with appropriately shaped lugs 8. A large number of rolling members 9 made of metal are buried in the back side of the rubber crawler 5 in correspondence with the meshing pitches of the sprocket 1 described above.

The above-mentioned rolling member 9 has a buried portion 10, an upright portion 11,
The buried part 10 is made up of a link part 12, and the rubber crawler 5 is placed in such a state that its lower surface approaches the core cord 7.
A pair of upright parts 11 are erected on the upper surface side of the buried part 10 in symmetrical positions at appropriate intervals, and a link part 12 is connected to the upper end of the upright part 11 by the length of the rubber crawler 5. forming a rectangular shape long in the direction, the center point of the length direction coincides with the center point of the upright portion 11 (symmetrical in the length direction),
Furthermore, the length is set such that the adjacent link portions 12 overlap with each other, and both ends are formed in an arc shape.

The upper surface side of the link part 12 is the adjacent link part 1.
2 forms a rolling surface 13 by continuing,
This rolling surface 13 contacts the aforementioned rolling wheel 3.

As shown in FIG. 3, the above-mentioned link parts 12, 12 are provided so that adjacent ones are alternately on the outside and on the inside, and two rolling surfaces 13 on the left and right are provided for the rolling wheels 3... , 13 are in contact.

As shown in FIG.
A pin 14 that engages with the sprocket 1 described above is inserted through the intermediate portion of the sprocket 2, and a seal 1 is inserted into this pin 14.
A collar 16 is inserted through 5 and 15.
One end of the pin 14 is press-fitted into the link portion 12, and the other end is provided in a loosely fitted state, so that the pin 14 can be removed and the collar 16 can be replaced. Note that pin 1
4 may be attached to the link portion 12 with bolts or the like so as to be removable, or may be made removable by other means.

The rolling surfaces 13, 13 configured in this way rotate when the rubber crawler 5 is driven by the sprocket 1, and the rolling wheels 3...
It will roll on a rail-shaped surface formed by
Provides smooth rotation.

Note that when the rolling surface 13 is curved as shown in FIG. 6, the overlapping of the adjacent link parts 12, 12 is only deepened, and the rolling wheel 3 rotates smoothly.
Furthermore, as shown in FIG. 7, even if the rubber crawler 5 runs on a stone or the like, the end of the link part 12 is arc-shaped, so the rolling wheels 3 can cross the link part 12 without impact. Further, there is no interference between the link portion 12 and the back surface of the crawler 5.

Note that both ends of the link portion 12 may be formed into inclined surfaces as shown by the imaginary lines in FIGS. 6 and 7.

Further, as shown in FIG. 8, the link part 12 may have a stepped part formed on one end side, and the other end side of the adjacent link part 12 may be arranged so as to overlap this step part. In this case, the rolling member 9 can be formed from the same parts.

Furthermore, as shown in FIG. 9, the link part 12 may be formed separately from the upright part 11 and fixed thereto with bolts 17 or rivets 18.

Further, the link portion 12 is L as shown in FIG.
The L-shaped member 19 may be connected to the upper end thereof, and the lower side of the L-shaped member 19 may be fixed to the buried portion 10 with bolts 20.

In addition, when constructed as shown in FIGS. 9 and 10, the link portion 12 and the collar 16 can be easily replaced, and the material of the wheel 3 can be changed to increase durability.

Furthermore, when the link part 12 is made into an assembly type as mentioned above, when the rubber crawler is molded, the link part 1
2 will no longer be an obstacle.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the traveling device, Fig. 2 is a partial side view of the rubber crawler, Fig. 3 is a plan view thereof, Fig. 4 is a sectional front view, and Fig. 5 is a side view of the traveling device. The figures are partially enlarged cross-sectional front views, Figures 6 and 7.
8 is a back plan view showing another embodiment, FIG. 9 is a side view showing another embodiment, and FIG. 10 is a sectional front view showing another embodiment. be. 3... Rolling wheel, 5... Rubber crawler, 9... Rolling member, 10... Buried part, 11... Standing part, 12...
... Link part, 13 ... Rolling surface.

Claims (1)

[Claims] 1 On the back side of the endless rubber crawler,
Metal link parts are installed on the left and right at intervals in the longitudinal direction, and the upper parts of adjacent link parts overlap each other when viewed from the side, and are provided so that they can be moved toward and away from each other so that the overlapping margin above each link part can be changed. A rubber crawler characterized in that a rolling surface in contact with a rolling wheel is formed on the upper surface of each link part, and a collar for engaging a sprocket is fitted to a pin mounted between the left and right link parts.