290HC Mast Section Working conditions, construction requirements and safety inspection items of tower crane climbing operation
(1) climbing operation shall be carried out in daytime. When the wind force exceeds level 5, the operation shall be stopped.
290HC Mast Section：
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(2) when climbing, strengthen the connection between the upper and lower floors, and the connection between the upper floor and the lower floor. In case of any fault and abnormal situation, stop the machine for inspection immediately. Do not continue climbing without troubleshooting.
(3) during climbing, it is forbidden to lift, rotate, change amplitude and other actions.
(4) after the tower crane climbs to the specified height, the supporting beam or leg of the tower body base shall be pulled out immediately, and fixed on the floor through the climbing frame to bear the vertical load transmitted from the upper part of the tower crane.
(5) the tower crane is attached to the floor slab through the guide device, wedge and climbing frame. Therefore, the guide device shall be tightened or wedged immediately after climbing to bear the horizontal load. Generally, the attachment distance of internal climbing tower crane shall not be less than 3 floors.
(6) for floors with climbing frame, the bottom of each floor slab shall be temporarily strengthened with columns. Two floors below the floor where the tower crane base supporting beam is used shall be temporarily strengthened with columns.
(7) after each climbing, the holes left on the floor must be closed with reinforced concrete immediately.
290HC Mast Section：
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(8) after the tower crane completes the climbing operation, it is necessary to check whether the attachment is firm, whether the climbing frame is fixed, whether the base support is tight, whether the temporary support of the floor is proper, etc., and confirm that there are no remaining problems, then the lifting operation can be carried out at the height of another floor.
290HC Mast Section：
http://www.towercranesupply.com/product/290hc-mast-section-liebherr-tower-crane
