The invention discloses a telescopic arm frame and engineering machinery comprising the same. The telescopic arm frame comprises an outer arm, an inner arm, a roller device and one or more sliding blocks, wherein the roller device comprises a roller and a support shaft; the roller provides support for the lower surface of the inner arm; the sliding blocks are arranged between the upper surface of the lower wall of the outer arm and the lower surface of the lower wall of the inner arm and are positioned on the outer side of the roller device in the extending and retraction direction of the inner arm; when the inner arm is in a retraction state, gaps exist between the sliding blocks and the upper surface of the lower wall of the outer arm or between the sliding blocks and the lower surface of the inner arm; and when the inner arm is in an extending state, no gaps exist and the inner arm is supported on the outer arm through both the sliding blocks and the roller device. According to the telescopic arm frame, the rolling support and the sliding support manners are adopted to realize that the inner arm is supported by the outer arm, a bran-new support mode is provided, large expansion length can be realized and large torque can be borne.
Telescopic arm frame and engineering machinery comprising same
2015-08-19
Patent
Electronic Resource
English
IPC: | F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile / B66C Krane , CRANES |
Multi-stage telescopic mechanism and engineering machinery
European Patent Office | 2022
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