Novel climbing ladder for internal-climbing tower crane

Abstract

The invention discloses a novel climbing ladder for an internal-climbing tower crane. The novel climbing ladder comprises an internal-climbing nesting frame girder, a climbing ladder connecting plate, a first climbing ladder section, a second climbing ladder section, a third climbing ladder section and a fourth climbing ladder section, wherein the climbing ladder connecting plate is fixed on the internal-climbing nesting frame girder; and pin holes are formed on the climbing ladder connecting plate, the first climbing ladder section, the second climbing ladder section, the third climbing ladder section and the fourth climbing ladder section. By using the climbing ladder, a user can swing back and forth and move right and left in the process of climbing the internal-climbing tower crane, the climbing claws of upper and lower beams can be hydraulically jacked and accurately positioned, and the situation that the climbing ladder interferes with the girder of an internal climbing base is avoided. The climbing ladder has a rational design, a simple structure and low cost.

Description

Technical field: [0001] The invention relates to a climbing accessory of a tower crane, in particular to a new type of climbing ladder used for an inner climbing tower crane. Background technique: [0002] The Chinese patent No. 02245259.1 discloses a new type of internal climbing tower crane. On the basis of the original internal climbing tower crane, a series of improvements have been made in the whole set of technologies from installation, climbing, use to disassembly. The whole process of internal climbing of the tower crane has been mechanized and automated. The main feature of the machine is the central lifting mechanism composed of inner climbing section, inner climbing lower section, upper beam and jacking beam; it consists of inner climbing sleeve frame, inner climbing guide frame, ladder, inner climbing base and embedded box The frame climbing system composed of the frame; the sprocket lifting mechanism composed of the lifting standard section, the lifting beam,...

AI Technical Summary

Problems solved by technology

However, in practice, it is still found that there are still some problems. For example, during the climbing process of this new type of internal climbing tower crane, the climbing ladder can neither swing back and forth nor move left and right, resulting in inaccurate positioning of the jacking claws and making the Interference between the ladder and the girder of the inner climbing base

[0003]In order to solve the above problems, a ladder passage was set on the main beam of the inner climbing base, but it is not ideal

In particular, during the climbing process of super-large internal climbing tower cranes, the lower two ladders can only be removed first, and then reinstalled after the tower crane has climbed to the right position, which is laborious and time-consuming

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