Bases Fixing Angles For L68B3 Mast

Products Specification

Type , Model: Bases Fixing Angles For L68B3 Mast

Size: 2M

Use for : L66A1, L66A3 ,L 68A1, L68A3, L68B1, L68B2 , L68B3  mast section , P20A  R20A, P21A  R21A  ,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.

Bases Fixing Angles For L68B3 Mast

Tower Crane Knowledge sharing：

Safety operation rules of tower crane: safety inspection before and after operation, personnel management, operation precautions

(17) tower crane machinery must operate in accordance with the prescribed lifting performance of tower cranes, and items of unknown weight shall not be lifted under excessive load. Under special circumstances, when the over-load is needed, it must be checked and calculated,.

there must be technical measures to ensure safety, approved by the technical person in charge of the enterprise, and there must be a special person on site to supervise the lifting, but the lifting shall not exceed 10% of the load limit.

Bases Fixing Angles For L68B3 Mast

(18) it is strictly prohibited to lift heavy objects and hang them in the air for a long time. In case of any sudden failure during operation, measures shall be taken to land the heavy objects in a safe place and turn off the motor or cut off the power for maintenance.

In case of sudden power failure, all controllers should be immediately set to zero, disconnect the main power switch, and take measures to reduce the weight to the ground safely.

(19) it is strictly prohibited to use tower cranes for cable-pulling, inclined lifting and lifting heavy objects buried underground or condensed on the ground. The concrete components or formwork cast on site must be all loose before lifting.

(20) when lifting heavy objects, tie them firmly and firmly. Do not pile or hang loose objects on the heavy objects. Sporadic materials and objects must be tied with a cage or wire rope firmly before lifting.

Objects marked with the lashing position or mark shall be lapped according to the indicated position. Binding wire rope and shall not be less than 300 ° Angle of the object.

Bases Fixing Angles For L68B3 Mast

(21) in case of severe weather such as gale-force 6 or above, heavy rain, heavy snow and fog, the tower crane shall be stopped from operating in the open air.

After the rain and snow or rain and snow in the operation, should first pass the test, confirm that the brake is sensitive and reliable before the operation.

(22) when the lifting load reaches 90% or more of the rated lifting weight of the tower crane, the crane shall first lift the heavy object 20 ~ 50cm above the ground to stop lifting and carry out the following inspections: stability of the crane, reliability of the brake, stability of the heavy object and firmness of binding.

Confirm and then continue to lift. For heavy objects that are subject to shaking, a pull rope must be used.

(23) the lifting and landing speed of the weight should be even, and no quick, slow or sudden braking is allowed. Left and right turning movement must be stable, when the rotation has not stopped before the reverse movement must not be made. Non - gravity drop tower crane, do not drop freely with load.

Bases Fixing Angles For L68B3 Mast

(24) the minimum distance from the top of the tower crane hook device to the bottom of the trolley frame: 1000mm for the upper rotary type 2 times, 700mm for the 4 times

It is 800mm for downward turning type 2 multiplier. When the multiplier is 400mm, the lifting shall stop immediately.

(25) during operation, when the operator leaves the operation room temporarily, the power must be cut off and the rail clamping device must be locked.

After the completion of the work, the tower crane should be parked in the middle of the track, the lifting boom should be turned downwind direction, and loose the rotary brake.

the car and balance weight should be placed in the non-working state, the hook should be lifted to the top of the lifting boom 2 ~ 3m.

Bases Fixing Angles For L68B3 Mast