|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||180/944 ; 180/95 ; 305/16|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 8 인용 특허 : 0|
A crawler vehicle, e.g. a drill rig, has a main frame that is carried by two crawler assemblies having frames that are journal-mounted to the main frame. A transverse pivotable beam is coupled between the crawler frames by means of journal bearings that are obliquely inwardly directed so that the axes of the four bearings intersect each other at a single point. The transverse beam supports the main frame by means of a journal bearing, the axes of which lie in a vertical longitudinal plane through said point of intersection. All the journal bearings have ...
A crawler vehicle comprising: a main frame; two substantially parallel crawler assemblies with respective frames; and means for pivotally mounting the crawler assembly frames to the main frame, said crawler assembly frames being pivotable relative to each other about axes transverse to the crawler frames; said pivotal mounting means including respective journal bearing devices connecting the main frame with each of the crawler frames, each of said journal bearing devices comprising a journal, a bearing box receiving the journal therein and an elastic ele...