A compressed-air height-adjustable safety helmet for building construction
A technology for building construction and safety helmets, which is applied in the field of safety helmets and can solve the problems of not being able to withstand the impact of large blocks and occupying space.
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[0037] Such as figure 1 , 2 As shown, it includes rolling ball 1, first cap shell 2, trigger mechanism 3, driving mechanism 4, mounting ring 5, moving hole 6, first spring 7, sliding chamber 8, second cap shell 9, third cap shell 10. Spherical hole 16, first circular hole 17, T-shaped slot 18, second circular hole 19, fixed post 20, sliding ring 21, T-shaped block 38, cooling hole 39, fixed arc plate 41, such as Figure 9 , 13 As shown, wherein the arc inner wall of the third cap shell 10 is uniformly provided with four cooling holes 39 in the circumferential direction; as Figure 13 As shown, four T-shaped blocks 38 are evenly installed on the outer circumference of the third cap shell 10 in the circumferential direction; as Figure 15 As shown, there are four non-through T-shaped slots 18 uniformly opened on the inner surface of the mounting ring 5 in the upper direction; Figure 14 As shown, six first circular holes 17 are evenly opened on the upper surface of the mount...
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