Abstract: A crawler pad to be mounted on the tread board of a crawler track shoe includes an elastic pad body (1) and a metal core (2) buried in the elastic pad body (1). The metal core (2) includes a locking member (4) movably inlaid therein, a fixed hook (6) rigidly secured to its one end, and a detachable hook (5) detachably secured to its other end. The locking member (4) and the detachable hook (5) have ratchet teeth (4a), (5a) on their mutual surfaces which are inclined to permit the detachable hook (5) to slide in its inserting direction and intermesh with one another in its withdrawing direction, thereby allowing the detachable hook (5) to be locked. The detachable hook (5) has preferably a groove (5b) for inserting a releasing pin (9) on its surface where the ratchet teeth are formed. The releasing pin (9) is operable to unlock intermeshing between the ratchet teeth of the locking member and the detachable hook (5).

Abstract: A road surface protection cover for covering the metal blade of a crawler track shoe. The cover comprises a main body (1) and a pair of fixtures 3 and 4 to be fixed on the left and right ends of the main body of the cover. In the interior of the main body 2 of the cover, there are embedded steel pipes 7 and 8 on the sides of fixture 3 and 4, there are side boards 3a, 3b and 4a, 4b, there are female screw threads 7a, 7b and 8a, 8b in the pipes 7 and 8. Through these bolts 9, 10 and 11,12 penetrate holes 3a, 3b and 4a, 4b for screwing purpose. On the faces of the ends there are depression 3e, 3f and 4e, 4f to conceal the best threads. In addition, the side boards 3c and 4c have their interior faces 3g and 4g formed in taper shape.