L68B1 Mast Section For Tower Crane Masts

Products Specification

Type , Model: L68B1 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.

L68B1 Mast Section For Tower Crane Masts

Tower Crane Knowledge sharing：

analyze the cause of hydraulic jacking system failure of tower crane and judge the fault location

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.

L68B1 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.

L68B1 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. The purpose of the hydraulic system testing from the above analysis

In order to make the hydraulic jacking system can work normally, in addition to control the hydraulic oil pollution way, but also in time to find those hydraulic components have decreased efficiency.

When repairing and maintaining the tower crane hydraulic jacking system, connect the components and pipes of the whole system, install the test valve, start the motor and run the whole system

L68B1 Mast Section For Tower Crane Masts

By observing the system generated by the various phenomena, analysis can determine a drop in the efficiency of hydraulic components to observe the change of the pressure gauge readings, and compared with normal。

By analyzing the pressure is too low, too high, and causes of the instability, can determine the cause of abnormal pressure hydraulic components, such as relief valve, pump, hydraulic cylinder, etc.

Observe the piston rod telescopic movement speed changes, compared to the normal value, if the speed is lower than the normal value, can determine the abnormal speed of the hydraulic components, such as the lock valve, gear pump, etc..

Observe whether the action of the actuator is slow, irregular or the mechanism crawling state, check the sequence of action and stroke control, can determine the cause of abnormal action of the hydraulic components, such as manual reversing valve, hydraulic cylinder piston.

Observe whether the whole system has abnormal vibration, noise, oil leakage, oil temperature is too high, can be analyzed to determine the cause of abnormal parts and treatment, such as pipe joints, filter, sealing ring.

Through the fault analysis and detection of the hydraulic jacking system, the early diagnosis and elimination of the fault can be achieved, which can effectively reduce the probability of system fault, and can be convenient and timely detection of hydraulic components with reduced efficiency, to ensure the safe use of the tower crane

Inspection and scrap standard of used tower crane parts

In recent years, as the construction industry continues to boom, the demand for tower cranes is increasing, the second-hand tower crane trading business is also very hot, became the market hot goods.

Some of the tower cranes that have already reached the scrapping standard have been decorated and then put on the market.

This creates a huge security risk. In fact, behind the frequent tower crane accidents in recent years, we can see the shadow of the overdue use of second-hand tower cranes.

Therefore, the industry association reminds, in the rental and purchase of second-hand tower crane, do according to the requirements to replace the tower crane equipment, tower crane accessories.

First, the second-hand tower crane brake is particularly important to check, once found cracks, brake block friction pad wear up to 50 of the thickness of raw materials.

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