Геккон-лифт

Expansion bolt is a special threaded connector used to fix the pipe support/hanger/bracket or equipment on the wall, floor or column. Name Elevator expansion bolts Sleeve Enhanced Type Expansion Anchor Bolts Expansion bolt Standard GB /T 22795 Size M6～M24 Length 40mm～300mm Grade 4.8 5.8 6.8 8.8 Material (1) Bolt materials commonly used materials: carbon steel Q195, Q235, 35K and 45# steel, for important or special purpose thread joints, can choose alloy steel with higher mechanical properties, or choose stainless steel material (2) The allowable stress of the thread connection is related to the load nature (static and variable load), whether the connection is tightened, whether the pretightening force needs to be controlled, and the material, structure and size of the thread connection. Surface Electric galvanizing, hot galvanizing, Dacro Description Expansion bolt is a special threaded connector used to fix the pipe support/hanger/bracket or equipment on the wall, floor or column. The expansion bolt is composed of countersunk head bolt, expansion tube, flat washer, spring washer and hexagonal nut. Construction operation technology When used, must first use the impact drill (hammer) in the fixed body to drill out the corresponding size of the hole, and then the bolt, tube expansion into the hole, screw the nut can make the bolt, tube expansion, installation and fixed body between the expansion into one. Tighten the expansion of the will, bolt tail has a big head, bolt set outside a slightly larger than the diameter of a bolt circle tube, and the tail part that there are a few openings, when after the bolt tightening, the bulk of the tail was brought to the opening of the pipe, the pipe burst, achieve the purpose of expansion, and then put the bolt fixed on the ground or walls, achieve the purpose of rooting. Principle of construction operation Principle OF FIXATION OF EXPANSION SCREWS: THE fixation OF EXPANSION screws is achieved BY USING a DEFLECTION to cause THE expansion to produce a frictional holding force. One end of the screw is threaded and one end has vertebrae. Coated steel sheet, iron sheet drum half number of incision, put them together into a good hole in the wall, then lock nut and the screw nut to pull, pull vertebral degrees into the steel cylinder and steel cylinder is rolling out, then firmly fixed on the wall, commonly used in fence, rain loose, air conditioning and other fastening on material such as cement, brick. But its fixation is not very reliable, if the load has a large vibration, may occur loose, so it is not recommended for the installation of ceiling fans. The principle of the expansion bolt is to hit the expansion bolt to the ground or wall hole, tighten the nut on the expansion bolt with a wrench, the bolt goes out, but the metal sleeve does not move, so the big head of the bolt under the metal sleeve opened, so that it is full of th