Fixing Angles SR48JR Basic Mast

Products Specification

Type , Model: Fixing Angles SR48JR Basic Mast

Size: 1.6M

Use for : L48A1, L48A3 mast section , P20A P20E, R20A, R20E

R16E , 1.6m 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.

Fixing Angles SR48JR Basic Mast

Tower Crane Knowledge sharing：

Tell you a technical method how to maintain the balance of the tower crane

How to maintain the balance of the tower crane is an unavoidable problem in the design, manufacture and use of the tower crane. Here, the tower crane factory tells you a technical method of how to maintain the balance of the tower crane.

Every student of basic mechanics knows that a lever consists of three parts -- a power arm, a resistance arm, and a support point.

The length of the power arm times the force applied to it is equal to the length of the resistance arm times the resistance encountered, which is equal torques at both ends, and the balance of the lever is maintained.

The structure of the tower crane is very complicated, but as a whole, it can be regarded as a lever. The counteracting force between the weight and the lifting object on the crane is the two forces applied to the lever.

Fixing Angles SR48JR Basic Mast

However, different from the general lever, the balance weight of the tower crane, when carrying out different lifting tasks, the common center of gravity of the crane, the weight and the balance weight will not exceed the range of the base platform (or the rail supported by wheels), because the gravity line of the object must be within the support surface of the support.

 Therefore, in the tower crane or other cranes installed on the platform used in the construction site, there is always a mechanism to adjust the distance between the balance weight and the supporting point, so as to achieve a balance of torque, so as to successfully lift a very heavy object, there is no tipping.

 It is worth mentioning that if this condition is not met, for example, the lifting weight is overweight or the balancing weight is not heavy enough, so that the center of gravity of the crane after the load goes beyond the platform, the tower crane will fall, resulting in a dangerous situation.

Fixing Angles SR48JR Basic Mast

Generally speaking, there are two fixed pulleys and a movable pulley (pulley block) on the upper part of the tower crane to pull down the cable with an electric winch. One end pulls up the weight.

The other end adjusts and balances the distance of the weight according to the gravity condition of the weight. In this way, both ends are of one heart and one mind, and the building materials are lifted to the height.

Novice easy to meet the problem, how to do a good job of tower crane hook movement

How does ability do tower crane to stabilize the action of hook? Is the new tower crane operators often encounter a problem, the factory according to the experience of the tower crane production, test on this question has carried on the simple summary, reference for open tower crane's friends,

if you have not the right place, welcome to correct

1. The most important thing in the basic operation of tower crane is the starting and stopping of the tower crane big arm. The acceleration and deceleration should be even.

2. In the operation of tower crane, it is mainly to speed up and decelerate step by step. Do not overstep the gear. 2 to 3 seconds between each shift; Second, we should learn to follow the car, just like we used the wire pendant, use inertia, you will understand.

When condole hook is thrown before, toward before with, the length distance that follows namely should master, the friend that depreciation needs to open tower crane understands car run speed, of course, time grew, practice can make perfect.

3. If the lifting object swings back and forth in the air when the tower crane is opened, you can try to push the trolley operating rod to the back and then immediately empty it, and then push it to the front and then empty it, so that the cycle is also very effective.

Fixing Angles SR48JR Basic Mast

4. If the tower crane is opened, will the big arm still swing in that direction when the rotation arm stops suddenly? Encounter this kind of circumstance, you can block after coming out empty, answer big arm to opposite direction again a block, come out again empty, gimmick wants fast, practice can make perfect.