Abstract: A rubber crawler having a metal core which comprises metal core extensions formed at predetermined intervals along the lengthwise direction of the metal core of the rubber crawler, thereby avoiding the phenomenon of wheel separation which occurs during crawler operation Wherein the metal core extensions are assembled on the mutually opposite surfaces of which are inclined at a predetermined angle, and the overlapped portion (center portion) surfaces of the metal core extensions are formed to have an angle of inclination to each other, thereby supporting the X axis, Y axis, and Z axis displacements.

Abstract: An apparatus for controlling tension of a track, and more particularly to an apparatus for preventing a track wheel from separating due to an uneven road surface and obstacles on the road surface by minimizing space between a moving idler and roller when controlling the tension of the track, and for supporting the weight of a machine more safely by maximizing the space between a rear roller and a front roller. To this end, the present invention is characterized by: a track frame structure in which the idler and the front roller move together when controlling the tension of the track; and a damping member for absorbing external shock, wherein the idler is fixed in an idler frame, the front roller is fixed in a roller frame, and the buffer member is positioned between the idler frame and the roller frame.

Abstract: The present invention relates to a rubber crawler having a metal core for improvement of wheel separation and durability, and comprises metal core extensions formed at predetermined intervals along the lengthwise direction of the metal core of the rubber crawler, thereby avoiding the phenomenon of wheel separation which occurs during crawler operation, and minimizing lug breakage due to foreign objects, bend fatigue of a metal core, metal core exposure and breakage of a tread portion, so that the durability performance is enhanced.

Abstract: The present invention relates to an apparatus for controlling tension of a track, and more particularly to an apparatus for preventing a track wheel from separating due to an uneven road surface and obstacles on the road surface by minimizing space between a moving idler and roller when controlling the tension of the track, and for supporting the weight of a machine more safely by maximizing the space between a rear roller and a front roller. To this end, the present invention is characterized by: a track frame structure in which the idler and the front roller move together when controlling the tension of the track; and a damping member for absorbing external shock, wherein the idler is fixed in an idler frame, the front roller is fixed in a roller frame, and the buffer member is positioned between the idler frame and the roller frame.

Abstract: The present invention employs a multi-link to an excavator for the first, and restricts a relative movement of the center frame (10) and the roller frame (20) using a multi-link bridge (30) in relation to an undercarriage system of vehicle body structures of the excavator. According to the present invention, in an undercarriage system in which the center frame 10 and the roller frame 20 are independently from each other, a plurality of links is added to rotate up and down by a predetermined angle in a vertical direction and a longitudinal direction of the roller frame (20) and thus the overturning can be prevented and also operator's feeling of riding can be enhanced by preventing an inclination of the center frame (10) due to condition of an uneven road surface, and a service life of the track can be increased as the partial wear is prevented.

Abstract: Disclosed is an undercarriage having a shock absorption function, including a pair of roller frames facing each other, each roller frame having a plurality of vibration-proof rollers inside thereof, at a lower portion thereof, a main frame disposed between the roller frames and provided with a turn table at a center portion thereof, and a shock absorption bridge for connecting the main frame to the roller frame. According to the present invention, vibration-proof rollers are installed inside a roller frame instead of conventional rollers and the shock absorption bridge is fixed between the main frame and the roller frame, thereby absorbing an external shock in two steps and thus enhancing ride comfort.

Abstract: Disclosed is an undercarriage having a shock absorption function, including a pair of roller frames facing each other, each roller frame having a plurality of vibration-proof rollers inside thereof, at a lower portion thereof, a main frame disposed between the roller frames and provided with a turn table at a center portion thereof, and a shock absorption bridge for connecting the main frame to the roller frame. According to the present invention, vibration-proof rollers are installed inside a roller frame instead of conventional rollers and the shock absorption bridge is fixed between the main frame and the roller frame, thereby absorbing an external shock in two steps and thus enhancing ride comfort.

Abstract: The present invention relates to an undercarriage equipped with a non-steel type rubber crawler using chain action, particularly to an undercarriage of a track system for a skid loader in which an auxiliary sprocket axis and an auxiliary sprocket are equipped to solve load concentration at the contact of a non-steel type rubber crawler, which is adopted to reduce total load of a vehicle, and cogs of a sprocket and a gearchain is equipped surrounding a main sprocket axis and the auxiliary sprocket axis, so that it receives the load dispersed over the large contact area of the non-steel type rubber crawler, thereby relieving internal stress concentration at the sprocket and the non-steel type rubber crawler and significantly improving life cycle of the non-steel type rubber crawler.