The length of each strut of the structure of the attachment device of the fixed tower crane can be adjusted. Each strut should be kept in the same plane. Adjust the length of the top block and strut to make the axis of the tower vertical. Generally, after attachment, theodolite should be used to check and adjust the verticality of the axis line of the tower crane. The verticality of the tower below the attachment point should not be greater than 2/1,000, and the verticality above the attachment point should not be greater than 3/10,000. The adjustment of perpendicularity can be realized by adjusting the advance and retreat of bolts on the strut.

The attachment device of the fixed tower crane shall be installed in accordance with the requirements of the tower crane manual, and the attachment device shall not be set up at an arbitrarily long distance and the free height above the attachment point (the specific attachment point is allowed to be adjusted in the range of 1m according to the actual situation of the building). The super - long attached pole should be designed and checked for strength and stability.

The first attachment distance of the tower crane is 24 m from the foundation surface. As the addition of the tower crane increases, the corresponding attachment times will increase. The maximum cantilever height of the tower crane shall not exceed 27 m.

Constant tower crane attachment device installation, two and a half framework set in the standard section, rely on two framework between 16 M20 banding connecting bolts the standard section, and then through the poles to support the tower, the attached device through the pin shaft is connected with attached frame will be attached to one end of the poles, on the other end connected to the fixed on the building of embedded parts, to form a stable structure itself.

The frame sleeve (also known as ring beam sleeve) is made of Angle steel and steel plate welded together. When in use, the frame sleeve is on the standard section. The four corners are fastened by 8 adjusting bolts through the top block, and the attachment frame is positioned on the standard section by 4 holding hoops under the frame. The frame is connected with the building through 3 or 4 bracing rods. The connecting points between bracing rods and the building shall be selected on concrete columns or concrete ring beams. The embedded parts shall be combined with concrete, and the embedded parts or wall bolts shall be connected with the building structure.

It is very dangerous to use expansion bolts instead of embedded parts, or cable wind rope instead of attachment support, because the attachment device and its accessories, like the standard section, belong to the same manufacturer's products, the use of substitutes reduces the strength and stability of attachment device.