Arrangement of fastening and safety devices for threaded connections
By introducing a safety device arrangement structure with threaded sleeves and protective arms into the fastening device, the risk of bolt breakage and installation complexity are solved, achieving both safety and simplified installation.
CN114833561BActive Publication Date: 2026-06-26弗兰克·霍曼 +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 弗兰克·霍曼
- Filing Date
- 2022-01-30
- Publication Date
- 2026-06-26
Smart Images
Figure CN114833561B_ABST
Abstract
The invention relates to an arrangement of a fastening device for a threaded connection and a safety device assigned to the fastening device. The threaded connection comprises a bolt and a nut placed on a backing. The fastening device comprises a cylindrical housing, a hydraulically driven piston arranged in the cylindrical housing so as to be movable along an axis (A), a replaceable sleeve which can be carried by the piston on the axis and can be fastened to the bolt (1B), and a carrier which can be connected to the nut by a force- or form-locking connection. In order to prevent the fastening device from jumping off in the event of a bolt breakage by means of a safety device, the components of the safety device are a threaded sleeve and a protective arm. The threaded sleeve is arranged outside the cylindrical housing and is constructed with an internal thread for engaging on a bolt (1C) adjacent to the bolt (1B). The protective arm is attached to the threaded sleeve and extends above the cylindrical housing of the fastening device.
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