Elevator gecko

Expansion bolt is a special threaded connector used to fix the pipe support/hanger/bracket or equipment on the wall, floor or column.

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Elevator expansion

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Description

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 the hole, at this time, the expansion bolt can not be removed.
Scope of application	1, drilling depth: it is better than the length of the expansion tube deep 5 mm or so 2, expansion bolt requirements on the ground is, of course, the harder the better, which also depends on the force you need to fix the object. Installed in concrete (C13-15), the force strength is five times that in brick. 3. After an M6/8/10/12 expansion bolt is correctly installed in concrete, its optimal maximum static force is 120/170/320/510 kg respectively. (Note that vibration will loosen the bolt)

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Elevator gecko

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