SR48JR Basic Mast Tower Crane Masts

Products Specification

Type , Model:

SR48JR Basic Mast Tower Crane Masts

SR48JR Base

L48A1 Basic Masts

Size: 1.6mx1.6mx5m 

Materials: Q345B

Within: Pins, bolts, Ladder, Platform

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.

SR48JR Basic Mast Tower Crane Masts

SR48JR Base

L48A1 Basic Masts

Tower Crane Knowledge sharing：

When the steel rope of a tower has one of the following characteristics, it is necessary to take scrap measures
The steel rope of the tower is responsible for lifting heavy objects, and the tension force of the wire rope is very large. Therefore, the maintenance of steel wire rope tower hanging should be careful, especially in accordance with the regulations, strict implementation of the scrap standards of steel wire rope tower hanging. Under what circumstances should the steel rope of the tower be scrapped? According to the characteristics of the tower hanging steel wire rope summarized as follows, when the tower hanging steel wire rope has one of the following characteristics, it is necessary to take scrap measures.

SR48JR Basic Mast Tower Crane Masts

SR48JR Base

L48A1 Basic Masts

1. Number of broken wires
If the wire rope is scrapped, then the number of wires broken by the wire rope 6 × 19-d(D wire rope diameter) exceeds 5 in the 6D length and the number of wires broken in the 30D length exceeds 10.
2. Generating deformities
Steel rope scrap will lose its normal shape and produce deformities, such as waves, cage-like distortions, rope extruding, wire extruding, rope diameter partial enlargement, twisted knot, rope diameter partial reduction, part compressed, bending.
3. Wear
Although there is no broken wire at the end of the wire rope, the wire rope wears 40 % of its diameter, or when the wire rope decreases by 7 % or more relative to the nominal diameter, or the wire rope is obviously bent.

Four Important Points for Safe Operation of Heavy Tower Suspension
Tower crane is a large lifting equipment, its safety can not be underestimated. There are not a few tower hanging accidents caused by improper operation of Tower lifting. The operation of heavy tower crane should strictly observe the safety operation rules of tower crane.on the heavy tower crane work safety operation of the four major matters discussed below.

SR48JR Basic Mast Tower Crane Masts

SR48JR Base

L48A1 Basic Masts

1. There shall be sufficient working space for the lifting of the tower, no obstacles within the lifting and landing radius of the lifting boom, and adequate lighting equipment for night operations.
2. Before operation, you must have a comprehensive understanding of the surrounding environment, driving roads, overhead wires, buildings, and the weight and distribution of components at the work site.
3. Safety protection devices such as variable-amplitude indicators, torque limiters, and various stroke limiters for tower cranes must be complete, sensitive, and reliable, and must not be arbitrarily adjusted and removed. It is strictly forbidden to use the limiting device instead of the operating mechanism for downtime.
4. It is forbidden to lift some overloaded objects, and it is strictly forbidden to use tower cranes for sloping, sloping, and lifting weights that are buried underground or condensed on the ground. Concrete components on the construction site must all be loose before lifting.

SR48JR Basic Mast Tower Crane Masts

SR48JR Base

L48A1 Basic Masts