Patent ID: 8499455

Claim:
A method for installing a land wind power generator by using lead rails, the method comprising: a step (S 10 ) of providing on the ground a lower support 10 having an insertion protrusion 11 formed at the top end thereof and a horizontal stepped surface 12 extended horizontally from the lower portion of the insertion protrusion 11 ; a step (S 20 ) of providing a pair of posts 61 of a tower crane 60 and a cage 62 for each post at the both sides of the horizontal stepped surface 12 of the lower support 10 , and ascending a nacelle assembly 40 having a support frame 44 having an overhead crane 44 - 1 , a nacelle base 43 connected to the pair of posts 61 of the tower crane 60 , and a nacelle 41 disposed at the top portion thereof; a step (S 30 ) of fixedly coupling an intermediate support 20 connected to an outside crane 70 to the insertion protrusion 11 of the lower support 10 , and locating a pair of horizontal support stands 21 connected to the posts 61 at the both sides of the intermediate support 20 ; a step (S 40 ) of locating the lead rails 80 along the ground and the front surface of the intermediate support 20 , ascending the nacelle assembly 40 , ascending an upper support 30 connected to the overhead crane 44 - 1 along the lead rails 80 in such a manner as to be coupled to the top end of the intermediate support 20 , and locating a pair of horizontal support stands 31 connected to the posts 61 at the both sides of the upper support 30 ; a step (S 50 ) of descending the nacelle assembly 40 so as to insert the upper support 30 into a support groove formed at the bottom portion of the center of the nacelle 41 and locating the nacelle 41 at the upper support 30 ; a step (S 60 ) of separating the nacelle 41 and the nacelle base 43 from each other, descending the nacelle base 43 and the support frame 44 , and disassembling the horizontal support stands ( 21 and 31 ), the lead rails 80 , the nacelle base 43 , the support frame 44 , and the posts 61 ; and a step (S 70 ) of locating a roller inside a rotary part 42 of the nacelle 41 , lifting a plurality of propellers 45 connected to a lifting line by means of a winch 71 , and inserting the propellers 45 into a plurality of coupling grooves 42 - 1 formed on the rotary part 42 .