An adjustable support for a tower crane

Abstract

The invention provides an adjustable bracket for a tower crane, which relates to the technical field of brackets and includes a No. 1 A-frame and a No. 2 A-frame. The outer surface of the No. 1 A-frame is connected to a No. There is a limit groove on one side wall of the outer surface of the frame, the inner wall of the limit groove is slidingly connected with the second block, and the tops of the first block and the second block are fixedly installed with mounting columns, and the two mounting columns are respectively far away from the first block And one end of the No. 2 block is fixedly installed with a mounting plate. In the present invention, the rebound force of the limit spring makes the movement more stable when the No. 2 block drives the bracket to fine-tune. Since the fixed positions of the No. 1 A-frame and the No. 2 A-frame and the bracket are adjustable, they can be moved and adjustment to adapt to the position of the root section of the arm, so that the two can collide correctly, and effectively impact the anti-collision main chord of the root section of the arm, avoiding the occurrence of dislocation collisions and deterioration of working conditions caused by force, and improving the support practicality.

Description

technical field [0001] The invention relates to the technical field of supports, in particular to an adjustable support for a tower crane. Background technique [0002] In the prior art, the integral anti-backbracket is used, which is connected to the A-frame through a pin shaft. This connection will cause the integral anti-backbracket to be unable to adjust and move along the direction of the A-frame, resulting in the integral anti-backbracket After the back tilt bracket is installed, there is a misalignment between it and the boom, so that it cannot effectively impact the anti-collision main chord of the root joint of the boom, forming a misalignment collision, and the stress condition deteriorates. [0003] In order to solve this problem in the prior art, it is necessary for the workshop to weld the A-frame, the integral anti-tilt support and the jib root joint together. In addition, the height of the A-frame of some types of tower cranes exceeds the operating height of t...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the integral anti-backbracket is used, which is connected to the A-frame through a pin shaft. This connection will cause the integral anti-backbracket to be unable to adjust and move along the direction of the A-frame, resulting in the integral anti-backbracket After the back tilt bracket is installed, there is a misalignment between it and the boom, so that it cannot effectively impact the anti-collision main chord of the root joint of the boom, forming a misalignment collision, and the stress condition deteriorates

[0003] In order to solve this problem in the prior art, it is necessary for the workshop to weld the A-frame, the integral anti-tilt support and the jib root joint together. In addition, the height of the A-frame of some types of tower cranes exceeds the operating height of the workshop. It will lead to difficult operation in the workshop. Even if it is assembled and welded, there is still the problem that the integral anti-backbracket cannot be interchanged, and it is not convenient for customers to replace the integral anti-backbracket after it is damaged.

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