Expansion cylinder with limiting device

• Main Authors: LIU XIANGSHUN, XU WEI, CHEN WENLI
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2020
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model belongs to the technical field of hole plugging. The problem that an existing expansion cylinder sinks during plugging is solved. The utility model discloses an expansion cylinder with a limiting device. The expansion cylinder comprises an expansion cylinder body and a limiting device, scales are arranged on the outer surface of the expansion cylinder body; the limiting device comprises a U-shaped lock catch arranged on the expansion cylinder body in a sleeving mode, the U-shaped lock catch comprises a first side plate and a second side plate, lock holes are formed in the first side plate and the second side plate, and the limiting device comprises a quick-opening screw and a nut which penetrate through the lock holes to be fixed. The lower end of the limiting device andthe preset scales are located on the same horizontal line. The expansion cylinder has the advantage of being accurate in positioning. 本实用新型属于开孔封堵技术领域，为了解决现有膨胀筒在封堵时出现下沉的问题，本实用新型公开了一种带有限位装置的膨胀筒，包括，膨胀筒本体和限位装置，所述的膨胀筒本体外表面设有刻度，所述的