A preloaded double-acting chemical expansion bolt and its installation method
A chemical expansion, double-acting technology, applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problems of corrosion connection strength, easy to be affected by temperature, easy to enter water, etc.
Active Publication Date: 2021-09-14
YIZHONG CONSTR GRP CO LTD
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Problems solved by technology
[0002] During the construction of construction projects, occasions where anchor bolts need to be installed are often encountered. The existing anchor bolts are generally fixed by chemical anchor bolts or fixed by expansion bolts, and chemical anchor bolts need to be placed with chemical hoses when they are used. The curing time of the agent is long, it is easily affected by the temperature, and the operation is cumbersome; the expansion bolt is usually expanded and fixed by the expansion cylinder and the expansion head. Although the fixing speed is faster than that of the chemical anchor bolt, the overall expansion force is relatively concentrated. There are gaps between them, and it is easy for water to cause corrosion and affect the connection strength
Method used
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[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0036] refer to Figure 1 to Figure 4 ,Such as Figure 1 to Figure 4 A preloaded double-acting chemical expansion bolt shown includes a bolt body 10, on which the bolt body 10 is sequentially provided with a threaded section 11, a tie rod section 12 and an expansion head 13 along its axial direction, and the tie rod section 12 An expansion sleeve 20 is set on the top, and an expansion nut 111 is provided on the threaded section 11. The end of the expansion head 13 facing away from the tie rod section 12 is provided with a crushing stirring head 14, and the crushing stirring head 14 and the tie rod section 12 A main discharge groove 131 is provided on the outer cone wall ...
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The present invention provides a pre-compression type double-acting chemical expansion bolt, which includes a bolt body, wherein a thread section, a pull rod section and an expansion head are sequentially arranged on the bolt body along its axial direction, and an expansion sleeve is sleeved on the pull rod section. The threaded section is provided with an expansion nut, the end of the expansion head facing away from the tie rod section is provided with a crushing and stirring head, and a main discharge is provided on the outer cone wall of the expansion head between the crushing and stirring head and the tie rod section. The outer cylindrical wall of the tie rod section is provided with a helical groove that is helically opened along its axial direction; the end of the threaded section is provided with a torsion part with a diameter smaller than that of the threaded section; it also includes a torsion part sleeved on the bolt body and located at the end of the threaded section. a sealing sleeve between the expansion sleeve and the expansion nut, the outer cylindrical wall of the sealing sleeve is provided with a sealing ring, and the end of the sealing sleeve facing the expansion nut is provided with a gasket against the end face of the expansion nut; further comprising: Chemical tube. The invention has the advantages of fast installation speed, immediate use after installation, and higher fixing firmness than the existing expansion bolts.
Description
technical field [0001] The invention relates to the construction field, in particular to a preloaded double-acting chemical expansion bolt and an installation method thereof. Background technique [0002] During the construction of construction projects, occasions where anchor bolts need to be installed are often encountered. The existing anchor bolts are generally fixed by chemical anchor bolts or fixed by expansion bolts, and chemical anchor bolts need to be placed with chemical hoses when they are used. The curing time of the agent is long, it is easily affected by the temperature, and the operation is cumbersome; the expansion bolt is usually expanded and fixed by the expansion cylinder and the expansion head. Although the fixing speed is faster than that of the chemical anchor bolt, the overall expansion force is relatively concentrated. There are gaps between them, and it is easy for water to cause corrosion and affect the connection strength. Contents of the inventi...
Claims
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IPC IPC(8): F16B13/06
CPCF16B13/066
Inventor 潘一中范继群潘隐燕苏立财马晨晨
Owner YIZHONG CONSTR GRP CO LTD