percussion type back bolt
A back bolt and lock head technology, applied in the direction of bolts, connecting components, screws, etc., can solve major accidents, back bolt falling off and other problems, and achieve the effect of eliminating accidents and preventing loosening.
Active Publication Date: 2018-09-18
镇江力点锚固有限公司
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AI Technical Summary
Problems solved by technology
[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a percussion type back bolt to solve the problem that in the prior art, when the back bolt enters into the reverse taper hole of the sheet material and contacts with a planar shape, the undercut action cannot be performed. A problem that may cause the back bolt to fall off and cause a serious accident
Method used
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Embodiment Construction
[0017] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0018] see Figure 1-Figure 2 , the present invention provides a percussion type back bolt: its structure includes a hexagonal concave hole 1, a lock head 2, a welding head 3, a percussion surface layer 4, a hexagonal nut 5, a circular gasket 6, and an undercut gasket 7 , plum blossom pad 8, open sleeve 9, tapered screw head 10, rod head line 11, model hole 12, screw rod 13, described lock head 2 is arranged on the top of welding head 3, described welding head 3 below A percussion surface layer 4 is provided, and the percussion surface layer 4 is arranged on the top of the hexagonal nut 5, and the hexagonal nut 5 is connected with the circular gasket 6, and the circular gasket 6 is movable Connect the undercut gasket 7, the undercut gasket 7 is c...
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The invention discloses a knocking type back bolt which structurally comprises a hexagonal concave hole, a tapered end, a welding head, a knocking surface layer, a hexagon nut, a circular gasket, an upturned gasket, a plum mat, an open type sleeve, a conical screw rod head, a rod head line, a model hole, a screw rod, an extrusion layer, a tear opening and an expansion block. The tapered end is arranged above the welding head, the knocking surface layer is arranged below the welding head and arranged above the hexagon nut, and the hexagon nut is connected with the circular gasket. The knocking type back bolt has the beneficial effects that in order to prevent the back bolt from being loosened after the back bolt is used for a long time, when the arranged upturned gasket enters a plate inverted cone hole to make contact with a face, expansion is carried out through the tear opening, upturning is formed, the back bolt is effectively prevented from being loosened, and accidents produced by back bolt looseness are completely eradicated.
Description
technical field [0001] The invention relates to a percussion type back bolt, which belongs to the field of back bolts. Background technique [0002] The back bolt is made of high-quality stainless steel, and there are corresponding anchor bolts for different plate thicknesses and specifications of the back bolt. [0003] The prior art discloses a percussion-type back bolt with the application number of CN201520835813.2, especially a percussion-type back bolt for hanging stone materials. The technical scheme adopted in the present invention is: knocking type back bolts, including flat bottom bolts and nuts, expansion rings are provided on the conical jacking parts of the root of the flat bottom bolts, and filling sleeves and washers are sequentially provided on the upper part of the expansion rings, so that The expansion ring is in the shape of a quincunx ring, which includes an annular bottom and a plurality of juxtaposed protrusions extending downward from the annular bott...
Claims
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IPC IPC(8): F16B39/24
CPCF16B39/24
Inventor 王恒忠
Owner 镇江力点锚固有限公司