S69J Basic Mast Tower Crane Masts

Products Specification

Type , Model:

S69J Basic Mast Tower Crane Masts

S69J Base Masts

L69 Base Masts

Size: 2mx2mx7.5m 

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.

S69J Basic Mast Tower Crane Masts

S69J Base Masts

L69 Base Masts

Tower Crane Knowledge sharing：

Analysis of the structure of the hydraulic system of the tower crane and the steps of the hydraulic overhead connection
Tower crane, it with towering posture, pulling out thousands of tons of goods for construction, transportation and transportation. However, how can the tower crane "carry" these heavy things up to a height? It also starts with the tower hoist hydraulic system.
As we all know, tower hoists are divided into the following major components-metal components, such as lifting arms, tower bodies, turntables, supports, balance arms, bottom frames, spires, etc。

Parts and components, such as wire rope, variable amplitude car, pulley, rotary support, hook and brake Working organization, such as lifting mechanism, changing amplitude mechanism, car traction mechanism, rotary mechanism and large car walking mechanism(walking tower crane)

S69J Basic Mast Tower Crane Masts

S69J Base Masts

L69 Base Masts

Safety devices, such as limit switches, overload insurers, Buffer stop devices, wire rope detaching devices, anemometers, emergency safety switches, and safety protection sound signaling machines, etc., are the hydraulic systems of Tower cranes.
The main components of the tower crane hydraulic system are hydraulic pumps, hydraulic cylinders, control elements, tubing and pipe joints, fuel tanks and hydraulic oil filters.
Among them, the tower suspension hydraulic pump and hydraulic motor are the most complex parts of the hydraulic system. The hydraulic pump inhales the oil and transmits it through the pipeline to the hydraulic cylinder or hydraulic motor, and the hydraulic cylinder is the hydraulic system's execution element.

Hydraulic pump can be seen as hydraulic and heart, hydraulic energy source. The hydraulic pumps used in the Chinese tower lifting hydraulic overhead system are mostly CB-G gear pumps, CB does not have the code name of gear, and Hegelong G is a fixed axial gap with a working pressure of 12. 5 ~ 16 MPa.
The entire process of a hydraulic top elevation can be divided into 7 major steps. They are
1. The balance of movement is heavy, so that the tower body is not subject to unbalanced moments, the lifting arm is in place, the orientation is the same as the introduction orbit and locked, and a standard section of the tower body is placed on the ferry car

S69J Basic Mast Tower Crane Masts

S69J Base Masts

L69 Base Masts

2. Peak
3. The positioning pin is in place and locked, the piston rod is lifted, and the introduction space is formed in the sleeve
4. Introduction of standard sections
5. Raise the standard festival and launch the ferry car
6. Place the standard section in place and install connection bolts
7. Slightly rise upwards, pull out the positioning lock to make the transition section and the tower tower that has been attached to the tower are integrated.

S69J Basic Mast Tower Crane Masts

S69J Base Masts

L69 Base Masts