When the construction of the internal climbing tower crane is carried out, special attention should be paid to the preparation of the installation work. The truck crane with appropriate hoisting performance should be selected for auxiliary installation. The range, hook height and lifting weight should meet the needs of erecting the internal climbing tower crane in the foundation pit.

The installation sequence of the internal climbing tower crane is as follows: the base and base section of the internal climbing tower crane - climbing system? Standard joints for all towers - bearings, slewing bearings, turntable and slewing mechanism? Top of tower, driver's cab - balance arm? Hoist boom? Balance weight. The climbing frame and related accessories can also be installed at the climbing hole of the corresponding floor before the climbing starts.

The internal climbing tower crane is composed of tower body, tower cap, lifting boom, balancing boom and climbing mechanism. It is featured that it is installed in the inside of the building (special compartments such as elevator shaft or stairwell). The construction surface is round. This is because, this kind of tower machine by the inner climbing jacket frame, the inner climbing guide frame, the ladder, the embedded box composed of a jacket climbing system; The central jacking mechanism is composed of inner climbing joint, inner climbing joint, upper beam and jacking beam. This greatly increased the scope of operation of tower crane.

Compared with the attached tower machine, the internal climbing tower machine has the characteristics of large effective construction capacity, low manufacturing cost, low usage cost, high safety and small floor space of the tower machine component materials. However, the base of the internal climbing tower crane is located on the body of the building.

After the use of the tower crane, it often means the completion of the main part of the building, into the interior decoration stage. At this time, the demolition of the tower crane, the preparation for the new work has become the tower crane driver, crane repairman and commander of the primary responsibility. However, this process is often a high incidence of accidents. The main reason is that the tower crane workers because of the completion of the task, lax thinking, and some construction personnel are not familiar with the technology, do not follow the relevant procedures.

1. Put down the hook, remove the fixed end of the lifting rope, and the reel shall be recovered by the wire rope.

2. The hoisting trolley is pulled back to the boom and fixed. The luffing rope is pulled back to the reel and the luffing mechanism cable is removed.

3. Remove 3 pieces to balance the weight.

4. Remove lifting arm.

5. Remove the last balance weight.

6. Remove the balance arm.

7. Dismantle the driver's cab.

8. Remove the top of the tower.

9. Remove the fixed joints of the upper turntable and the rotary mechanism.

10. Remove the fixed joints of the turntable and the rotary mechanism.

11. Dismantle the tower: dismantle the tower according to the reverse procedure of erecting the tower.

12. Dismantle the tower crane underframe.

13. After dismantling the tower crane parts, decompose them as required and transport them away from the site.