Clawler Without Steel Cores
The present invention relates to a crawler without steel cores (hereinafter referred to as “coreless crawler”), which is used for transporting means of caterpillar vehicles for construction, civil engineering, agricultural use or the like. More particularly, this invention relates to a coreless crawler, in which a first and second separation preventing cables, having the same but opposite directional oblique angle, form a unitary layer by being woven, thereby improving the flexibility and increasing binding forces between the cables, so that separation of the crawler can be effectively prevented.
1 . A crawler without steel cores, comprising:
main cables( 4 ) repetitively wound many times inside a crawler body( 2 ) in the direction of driving;
first and second separation preventing cables( 5 , 6 ) inserted inside the crawler body so as to be layered on the main cables( 4 ); and
lateral tension reinforcing cables( 7 ) inserted inside the crawler body( 2 ) so as to be layered on the first and second separation preventing cables( 5 , 6 ) so that they are across the crawler's driving direction,
whereby the first and second separation preventing cables( 5 , 6 ) are woven so that they form a same layer integrally.
2 . The crawler according to claim 1 , wherein the respective first and second separation preventing cables ( 5 , 6 ) are grouped into a plurality of cables arranged at equal intervals and forming a predetermined width (L), and a group of the first separation preventing cables ( 5 ) and a group of the second separation preventing cables ( 6 ) are woven alternately.
3 . The crawler according to claim 2 , wherein a first group of second separation preventing cables ( 6 ) is disposed on a first group of first separation preventing cables ( 5 ) so as to overlap with one end portion thereof, a second group of first separation preventing cables ( 5 ) is disposed on a first group of second separation preventing cables ( 6 ) so as to overlap with a central portion thereof, and a second group of second separation preventing cables ( 6 ) is disposed on a second group of first separation preventing cables ( 5 ) so as to overlap with one end portion thereof, and
wherein a structure that a third group of first separation preventing cables ( 5 ) is disposed on the second group of second separation preventing cables ( 6 ) so as to overlap with a central portion thereof, and simultaneously on the first group of second separation preventing cables ( 6 ) so as to overlap with an opposite end portion thereof, and a structure that a third group of second separation preventing cables ( 6 ) is disposed on the third group of first separation preventing cables ( 5 ) so as to overlap with one end thereof, are alternately woven into a unitary layer structure.
4 . The crawler according to claim 2 , wherein a first group of second separation preventing cables ( 6 ) is disposed beneath a first group of second separation preventing cables ( 6 ) so as to overlap with a central portion thereof, and a second group of first separation preventing cables ( 5 ) is disposed beneath the first group of second separation preventing cables ( 6 ) so as to overlap with one end thereof, and
wherein a structure that a second group of second separation preventing cables ( 6 ) is disposed beneath the second group of first separation preventing cables ( 5 ) so as to overlap with a central portion thereof, and simultaneously on the first group of first separation preventing cables ( 6 ) so as to overlap with an opposite end portion thereof, and a structure that a third group of first separation preventing cables ( 5 ) is disposed beneath the second group of second separation preventing cables ( 5 ) so as to overlap with one end thereof, are alternately woven into a unitary layer structure.
5 . The crawler according to any one of claims 1 to 4 , wherein the first and second separation preventing cables ( 5 , 6 ) have the same oblique angle in the opposite direction.
6 . The crawler according to any one of claims 1 to 4 , wherein the first and second separation preventing cables ( 5 , 6 ) have the oblique angle within the range of 30 to 80° with regard to an axial line of the crawler's driving direction.