Anchor Frame Collar For L66A3 Mast

Products Specification

Type , Model: Anchor Frame Collar For L66A3 Mast

Size: 2m for 2M L type mast

Materials: Q345B

Process: Blasting derusting, 

Painting:  Under painting , Middle painting, Surface painting.

Our factory produce and supply almost all famous brand tower crane :Mast section, Anchor Frame, Fixing angle ,Adaptor and so on as good quality and price.

Anchor Frame Collar For L66A3 Mast

Tower Crane Knowledge sharing：

Standard for replacement of tower crane hooks

Tower crane hook is used to hook items in the construction site to and fro transportation, is an important tower crane accessories, must ensure its reliable quality. So, what is the standard for scrapping the tower crane hooks? Under what circumstances should the tower crane hooks be replaced

One of the most important is that the tower crane hook is prohibited from welding, and there is one of the following circumstances should be scrapped

Anchor Frame Collar For L66A3 Mast

(1) observe surface cracks and cracks with a 20-fold magnifying glass

(2) the hook tail and thread parts and other dangerous sections and the hook bar have permanent deformation

(3) the wear amount of the section at the rope suspension exceeds 10% of the original height

(4) the wear amount of the mandrel exceeds 5% of its diameter

(5) the opening degree is 15% higher than the original size.

Erection procedure and preparation of tower crane standard section jacking

Preparation for jacking of standard section of tower crane

(1) the jacking operation of the standard section of the tower crane must be carried out under wind force of less than grade 4.

(2) check the mechanical system, electrical system, structural part and hydraulic system of the tower crane.

(3) check the jacking part of the cylinder, cylinder beam, standard lug plate and bearing, and adjust the sleeve roller and tower body main chord clearance, etc..

(4) before jacking, all standard joints for height connection shall be adjusted to the front of the introducing beam of the jacket frame with the lifting mechanism within the range of 10 meters, and the lifting boom

(5) shall be rotated to the direction of the introducing standard joint.

(6) during jacking, do not turn the tower.

Jacking operation procedure of standard section of tower crane

Anchor Frame Collar For L66A3 Mast

(1) using jack-up special wire rope buckle will lift a standard section to turn down the introduction of the amount of the upper section introduced the four roller card axis insert link set inside, and rotate it 90 degrees that the lower part of introduction of roller card board under the standard section of the lower horizontal CHS

Then put on the introduction of beam, the other lift a standard section, adjustment range of the car to the appropriate position, make the top part of the weight in balance, the balance of the tower is not the moment to a minimum.

(2) start the hydraulic jacking system and put the lugs on both ends of the cylinder beam into the lug jacking groove on the upper part of the support section. When jacking, pay attention to retract the support shaft.

(3) check set between the tower and accessibility, in the ministries and correct, down the tower and the turntable 8 each link bolt, then handle up top point set operation, integrated back into the bearing, the positioning of the turntable and standard section caused by convex platform 20 mm apart

Anchor Frame Collar For L66A3 Mast

Observe whether the positioning convex sets and the turntable of concave hole is, in the event of a deviation must adjust the position of the range of the car for.

(4) when operating the handle, the oil cylinder jacks up the upper structure to raise a step, extend the supporting shaft, bear it at the lifting lug plate at the lower part of the standard section, put the lugs on both ends of the lifting beam of the oil cylinder into the lug plate groove, slightly jacking up the sleeve frame and retraction the supporting shaft.

Anchor Frame Collar For L66A3 Mast

(5) and then to the second step of the jack-up, to be the height of the oil cylinder stroke more than a standard section out of supporting shaft, and will be placed on the introduction of the standard on the beam section within the artificial introduction set, aim at the section below, pay attention to the top of the ear plate plan consistent with the following sections

A jacking point set, retract a supporting shaft, and slowly down set operating handles section to make a new standard in place, and good with the original standard section link below eight strong connection bolt.

Anchor Frame Collar For L66A3 Mast

(6) extend the supporting shaft, but above the lifting lug plate on the upper part of the standard segment, retracted the piston rod of the oil cylinder, put the lug plates on both ends of the lifting beam into the groove of the lifting lug plate on the upper part of the standard segment, and prepare for the next working cycle.

(7) if you need to continue raising the tower, with a hook to lift one day with four introduce wheel standard on the introduction of beam section, first, must pay attention to in hoisting standard tower between turntable under the each main limbs and should be for at least a high strength bolt, and the range of the car can run within 10 meters range

Adjust the range of the car position, keep the upper top of weight balance, to tear down and turn down the connecting bolt, go to the next cycle, until the height of the tower height reach need.

(8) after the jacking is completed, the high-strength bolts between the standard section of the tower body and the down-turning shall be installed, and then the high-strength bolts shall be fully tightened to reach the preset tightening force

Anchor Frame Collar For L66A3 Mast