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Construcciones Y Tecnicas De Maquinaria sa
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Construcciones Y Tecnicas De Maquinaria sa
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Application filed by Construcciones Y Tecnicas De Maquinaria safiledCriticalConstrucciones Y Tecnicas De Maquinaria sa
Priority to ES1985291170UpriorityCriticalpatent/ES291170Y/en
Publication of ES291170UpublicationCriticalpatent/ES291170U/en
Application grantedgrantedCritical
Publication of ES291170YpublicationCriticalpatent/ES291170Y/en
Improved crane boom, of the telescopic type that is articulated at the end of a mobile column and preferably of the type incorporated in a frame coupled to the chassis of a vehicle, characterized essentially because parallel to the sections of the boom are provided two or more cylinders hydraulics, one of which fixes its body to the first section of the boom and the end of its stem to the intermediate section, while the other hydraulic cylinder fixes the front part of its body to the intermediate section of the boom and the end of its rod. To the next section and so on, determining the extension or collection of the corresponding telescopic sections according to a uniform advance or retraction in which the different hydraulic cylinders are successively moved along with the telescopic section in which they are seated. (Machine-translation by Google Translate, not legally binding)