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2021
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What is the purpose of the vibration damping bolts?
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【Summary】Shock-absorbing bolt; consisting of a screw, a rubber column, said screw has a screw head larger than its diameter, said screw head of the screw is embedded in the two ends of the rubber column, the end face of the screw head near the thread is flush or slightly convex with the end face of the rubber column, and the screws at both ends of the rubber column are coaxial.
Shock-absorbing bolt; consisting of a screw, a rubber column, said screw has a screw head larger than its diameter, said screw head of the screw is embedded in the two ends of the rubber column, the end face of the screw head near the thread is flush or slightly convex with the end face of the rubber column, and the screws at both ends of the rubber column are coaxial.
The advantages of the utility model are: equivalent to the shock-absorbing rubber pad and the bolt into one, without increasing the number of parts; rubber column can be large or thick enough to enhance the axial and radial shock absorption effect on instruments and meters; the softness and let of the rubber column can reduce the installation accuracy requirements of the bolt; the structure is simple and can be widely used for the connection support of instruments and meters.
1, a shock-absorbing bolt, including a screw, rubber column, said screw has a screw head larger than its diameter, characterized in that: the screw head (2) of said screw (1) is embedded in the rubber column (3) at both ends, the end face of the screw head (2) near the threads and the end face of the rubber column (3) flush or slightly convex, the screw (1) at both ends of the rubber column (3) coaxial.
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Strength grades are classified according to mechanical properties. According to the relevant standards, the bolt performance grade is divided into 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 and more than 10 grades, of which 8.8 and above bolts made of low-carbon alloy steel or medium carbon steel and heat treatment (quenching, tempering), commonly known as high-strength bolts, the rest are commonly known as ordinary bolts. The bolt performance grade number has two parts consisting of numbers, which indicate the nominal tensile strength value of the bolt material and the flexural strength ratio. For example.
MORE +The first is the punching of the head, where the head of the screw is punched out of the wire and the wire is cut. The second is thread rolling, where two files are used to thwart the threads on top of the previous process.
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The bolt performance grade is composed of two numerical parts, which indicate the nominal tensile strength value and the flexural strength ratio of the bolt material.
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Generally we use most of the fasteners belong to the type of general-purpose parts, its standard type is still quite high, the common fastener parts are the following 12 kinds:
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