| CPC F16M 11/28 (2013.01) [E04B 1/34305 (2013.01); E04H 12/182 (2013.01); H01Q 1/10 (2013.01)] | 9 Claims |
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1. A telescopic c mast with built-in belt ropes, the telescopic mast comprising:
a plurality of joint bodies having different outer diameters in a hollow tube structure;
a plurality of belt ropes connecting the plurality of joint bodies in order to operate the joint bodies simultaneously;
collar parts coupled to tops of the respective joint bodies, in which guide rollers that guide the movement of the belt ropes are embedded in one side and the other side on an opposite portion thereof;
a belt rope stator coupled to a bottom of a lowermost joint body having the largest diameter among the plurality of joint bodies, to which both ends of any one belt rope are fixed; and
belt rope guides coupled to bottoms of the respective joint bodies excluding the lowermost joint body, to which both ends of any one belt rope are fixed and the other belt rope is movably coupled,
wherein the plurality of joint bodies are assembled to overlap one another to constitute a telescopic structure whose length is adjustable,
wherein the remaining belt ropes excluding a lowermost belt rope among the plurality of belt ropes connect two joint bodies spaced apart from each other in an interlocking manner with one joint body in the middle therebetween, and
wherein the belt ropes connecting two joint bodies spaced apart from each other pass into a joint body positioned between the two joint bodies to be connected so as not to be exposed to the outside.
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