L46A2 Mast Section For Tower Crane Masts

Products Specification

Type , Model: L46A2 Mast Section For Tower Crane Masts

Size: 1.6mx1.6mx3m 

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.

L46A2 Mast Section For Tower Crane Masts

Tower Crane Knowledge sharing：

Tower crane hydraulic jacking system fault analysis and testing, maintenance, maintenance

There are many tower crane accidents, half of them are caused by improper disposal of the system failure, in order to avoid major equipment accidents, how to prevent the hydraulic jacking system failure has become an urgent problem to be solved.

Through the comprehensive statistics of the hydraulic jacking system faults, it is found that most of the system faults are sudden faults and wear faults, and the causes of these faults are mainly caused by hydraulic oil pollution.

The main causes of hydraulic oil pollution are water, dust and air mixed with hydraulic oil in the process of use and maintenance.

 Metal chips, sand grains and other impurities remaining in the system during the manufacturing process of hydraulic components; Metal abrasive grains and rust from oil tank in use of hydraulic components.

L46A2 Mast Section For Tower Crane Masts

Hydraulic jack-up system is a closed loop system,the pollution of hydraulic oil, through gear pump, its rigid particulate contamination could increase the relative sliding parts wear and wear of the chip with the system back to oil into the tank, with the constant circulation of oil。

More and more into the pump in the dirt, dirt particle size is more and more thin, wear for hydraulic components is more and more serious, the relative movement of parts clearance increases gradually, internal leakage, results in the decrease of system efficiency, the oil temperature rising.

Hydraulic oil is the power transmission medium of the hydraulic jacking system, which is easy to oxidize and deteriorate under the influence of temperature, pressure and pollution.

Moreover, after oxidation, the oil film will not lubricate, making the metal surface of relative moving parts contact with each other and accelerating the wear of parts. Finally, the internal leakage will reduce the system's working efficiency and fail to reach the working pressure.

L46A2 Mast Section For Tower Crane Masts

In addition, in the hydraulic jacking system of the overflow valve, lock valve and other parts are controlled by the oil pressure and action, but when the dirt stuck between the valve core and the valve body or plug the valve core damping hole, will make the valve action is not working properly and cause the system can not work normally, resulting in the sudden failure of the system.

Preventing hydraulic oil from being polluted is the key to preventing hydraulic jacking system from failure

Therefore, to cut off the way of pollution, the first to control the hydraulic tank water. Through many years of observation, although the hydraulic pump station is equipped with rainproof device, but the use of a long time, or through the bolt hole, motor connection and other places into the tank

Therefore, it is necessary to use combination gasket, special sealant and other forms to seal the parts prone to water ingreation, and timely repair the damaged rainproof device; Release separated water from tank bottom before each system operation. Control hydraulic oil quality.

L46A2 Mast Section For Tower Crane Masts

In addition to the regular replacement of specified brand hydraulic oil according to the requirements of use, also need to regularly check the quality of hydraulic oil, if found in the oil droplets, foam or become milky white, timely replacement of hydraulic oil。

Including the remaining oil in the hydraulic cylinder, to avoid repeated pollution; When filling hydraulic oil, it shall be strictly filtered, and the appliance used shall be kept clean to prevent fine particles from entering the hydraulic system.

Is in the work to prevent the oil temperature too high. First, before the hydraulic jacking system works, check the oil level, and add the hydraulic oil in time to maintain the normal oil level of the oil tank。

So that the system has enough circulating cooling conditions, and can prevent the oil level is too low and make the air into the system; The second is the timely replacement of hydraulic components resulting in system efficiency decline.

Inspection of tower crane hydraulic jacking system