Pivot bearing assembly having a pivot pin and having at least one bearing block and assembly method therefor

{
  "publication_number": "US10781851B2",
  "country": "US",
  "kind": "B2",
  "title": "Pivot bearing assembly having a pivot pin and having at least one bearing block and assembly method therefor",
  "abstract": "A pivot bearing assembly includes a pivot pin and at least one bearing block, in which a bearing bush having a bearing bore is accommodated. The pivot pin is slidingly supported in the bearing bore. In order to create an improved pivot bearing assembly, the bearing bush has a rounded outer surface, which is inserted into a negatively rounded inner surface in order to orient the bearing bush.",
  "claims": [
    "1. A pivot bearing assembly comprising: a pivot pin and at least one bearing block with a bearing bush having a bearing bore received in the at least one bearing block, and wherein the pivot pin is slidingly supported in the bearing bore; wherein the bearing bush has a spherical outer surface which is inserted into a negatively rounded inner surface in order to orient the bearing bush relative to the negatively rounded inner surface; and wherein the bearing bush, after being oriented, is rotationally fixed in the bearing block relative to the negatively rounded inner surface.",
    "2. A pivot bearing assembly as claimed in claim 1, wherein the bearing block is welded to a strap frame.",
    "3. A pivot bearing assembly as claimed in claim 2, wherein the negatively rounded inner surface is formed in a bearing block bore.",
    "4. A pivot bearing assembly as claimed in claim 3, wherein the bearing bush is adhered directly into the bearing block.",
    "5. A pivot bearing assembly as claimed in claim 2, wherein the negatively rounded inner surface is formed in an intermediate ring which is inserted into the bearing block bore.",
    "6. A pivot bearing assembly as claimed in claim 5, wherein the bearing bush is adhered into the intermediate ring.",
    "7. A pivot bearing assembly as claimed in claim 1, wherein the negatively rounded inner surface is formed in a bearing block bore.",
    "8. A pivot bearing assembly as claimed in claim 7, wherein the bearing bush is adhered directly into the bearing block.",
    "9. A pivot bearing assembly as claimed in claim 1, wherein the negatively rounded inner surface is formed in an intermediate ring which is inserted into the bearing block bore.",
    "10. A pivot bearing assembly as claimed in claim 9, wherein the bearing bush is adhered into the intermediate ring.",
    "11. A pivot bearing assembly as claimed in claim 10, wherein the intermediate ring is adhered or pressed into the bearing block bore.",
    "12. A pivot bearing assembly as claimed in claim 9, wherein the intermediate ring is adhered or pressed into the bearing block bore.",
    "13. A pivot bearing assembly as claimed in claim 1, wherein the at least one bearing block includes two bearing blocks, wherein the bearing blocks are spaced apart from one another and support a common pivot pin.",
    "14. A pivot bearing assembly as claimed in claim 13, wherein the two bearing bushes, after being oriented, are fixed in the bearing block such that, as seen in a longitudinal direction of the pivot pin, the bearing bores of the bearing bushes are aligned with one another.",
    "15. A pivot bearing assembly as claimed in claim 1, wherein the bearing bore is cylindrical.",
    "16. A pivot bearing assembly as claimed in claim 1, wherein the bearing bush is produced from synthetic material.",
    "17. A mobile crane comprising a pivot bearing assembly as claimed in claim 1, wherein at least one chosen from a first said pivot bearing assembly is arranged between a superstructure and a base of a jib, a second said pivot bearing assembly is arranged between the superstructure and a luffing cylinder [and/or] and a third said pivot bearing assembly is arranged between the jib and the luffing cylinder.",
    "18. A mobile crane as claimed in claim 17, wherein the at least one bearing block is welded to the superstructure or the jib.",
    "19. A method of assembling a pivot bearing assembly, comprising: a pivot pin and at least one bearing block with a bearing bush having a bearing bore is received in the at least one bearing block and wherein the pivot pin is slidingly supported in the bearing bore, wherein the bearing bush which has a rounded outer surface is inserted into a negatively rounded inner surface and the bearing bush is oriented, and the bearing bush, after being oriented, is rotationally fixed in the bearing block.",
    "20. A method as claimed in claim 19, wherein the bearing bush is adhesively fixed in the bearing block."
  ],
  "description_excerpt": "The invention relates to a pivot bearing assembly comprising a pivot pin and at least one bearing block, in which a bearing bush having a bearing bore is received and the pivot pin is slidingly supported in the bearing bore. The invention also relates to an assembly method for such a pivot bearing assembly. German laid-open document DE 2 136 464 discloses a pivot bearing assembly for a cantilevered and extendible jib of a travelling crane. The jib can typically be pivoted in the region of its base about a horizontal pivot pin by means of a luffing cylinder. The pivot pin is a component of the pivot bearing assembly, with which the jib is articulated to a centre pivot plate. The centre pivot plate has two mutually spaced apart and vertical side plates, on which in each case a bearing block of the pivot bearing assembly is arranged. The bearing blocks are each secured against rotation and receive a cylindrical bearing bush which is preferably made of bronze. The pivot pin for the pivot bearing of the jib is received by the two mutually aligned bearing bushes. In addition, the bushes have, on mutually facing sides, an annular flange which lies in each case against the jib. As a result, the bearing bushes are used not only for the pivot bearing of the jib but also for the lateral guidance thereof.\n\nIn order to ensure that the pivot bearing can move freely and to minimise wear of the bearing bush made of bronze on the pivot pin made of e.g. steel, the bearing bushes are lubricated with grease.",
  "cpc": [
    "F16C 11/045",
    "B66C 23/62",
    "F16C 2226/40",
    "F16C 23/045",
    "F16C 2326/00",
    "F16C 2350/26",
    "F16C 33/08",
    "F16C 35/02",
    "Y10T 403/32893"
  ],
  "ipc": [
    "B66C 23/62",
    "F16C 11/04",
    "F16C 23/04",
    "F16C 33/08",
    "F16C 35/02"
  ],
  "assignees": [
    "TEREX GLOBAL GMBH"
  ],
  "inventors": [
    "HEINTZ ROLF"
  ],
  "filing_date": "2016-05-31",
  "publication_date": "2020-09-22",
  "grant_date": "2020-09-22",
  "priority_date": "2015-06-02",
  "application_number": "US-201615578497-A",
  "family_id": "56097103",
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  ]
}