Upper bracket structure of tower crane and tower crane

Abstract

The invention discloses an upper bracket structure of a tower crane and the tower crane. The upper bracket structure comprises a box body 2 and two slewing mechanisms 1 mounted on the box body 2, wherein the two slewing mechanisms 1 are arranged on the same side of an upper bracket. According to the upper bracket structure, the two slewing mechanisms are arranged on the same side of the upper bracket, so that space usage is reduced, the platform layout is compact and reasonable, the blanking area of an upper bracket cover plate is reduced, and the material utilization efficiency is increased; and the slewing mechanisms are arranged on one side of the upper bracket, and a cab platform is arranged on the other side of the upper bracket, so that weight distribution is reasonable, and the working stability and reliability of the tower crane are improved.

Description

technical field [0001] The invention relates to a connecting structure of a boom of a flat-top tower crane, in particular to an upper support structure of a tower crane, and belongs to the technical field of booms of a flat-top tower crane. Background technique [0002] As an important component of the tower crane, the upper support is mainly used to connect the lower support, tower cap, balance arm and boom. The existing upper support structure is as follows: figure 1 As shown, the whole is a box-type structure, which is mainly composed of a box body 2, a rotary mechanism 1 installed on the box body 2, and an upper support cover plate. Among them, the slewing mechanism 1 is composed of a slewing motor, a slewing reducer, etc., and the two slewing mechanisms are distributed on both sides of the upper support, and are meshed with the slewing support to realize the slewing motion of the upper support and the tower crane. But in actual use, there are the following problems ...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the slewing mechanism is distributed on both sides, the material utilization rate of the upper support cover plate is low;

[0004] 2. If figure 2 As shown, the upper support takes up a lot of space, the platform layout is not compact, and it is inconvenient to install and transport. For example, the installation position of the protruding slewing mechanism limits the layout of the maintenance platform and the cab platform 3; and the side of the upper support is a slewing mechanism. The other side is the slewing mechanism and the driver's cab. The weight distribution is unreasonable, and it will be biased to the side of the driver's cab, which affects the stability and reliability of the tower crane.

Images