A crawler crane capable of hoisting with double hooks and its structural design method

Abstract

The invention relates to a crawler crane that can be hoisted by double hooks and a structural design method, wherein the crawler crane that can be hoisted by double hooks includes a main arm and an auxiliary arm, the arm end of the main arm is suspended from the main hook, and the arm end of the auxiliary arm is suspended As for the auxiliary hook, both the main hook and the auxiliary hook can be hoisted independently, or they can be hoisted simultaneously. The crawler crane provided by the invention can improve the operating efficiency of the crawler crane according to the special hoisting requirements of customers, and hang two hooks at the same time under the working condition of the jib, which can not only exert the hoisting capacity of the main arm and the jib, but also realize double hooks. At the same time, the hoisting operation fully expands the scope of use of the product and improves the market competitiveness of the product.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crawler crane capable of hoisting with double hooks and a structural design method. Background technique [0002] The operating conditions of crawler cranes are generally divided into main arm operating conditions and auxiliary arm operating conditions. The main arm of the crawler crane has a large lifting capacity, but its hoisting scope and seating height are limited. The jib (including fixed jib or tower jib) of crawler crane, as the key load-bearing structural part of the jib system of crawler crane, can greatly expand the scope of hoisting operation of crawler crane, and is one of the common working conditions for users. The jib system is generally composed of each jib section of the jib, jib bracket, jib front pull plate (cable), jib rear pull plate (cable) and jib anti-tilt device, and is installed on the top of the main jib. The installation is more complicated th...

AI Technical Summary

Problems solved by technology

The choice of hoisting conditions can only be made in advance. If it needs to be replaced, the boom can only be dropped on the ground again and installed in advance. Therefore, the interchange between crawler cranes must be dismantled. Installation, complex operation, low work efficiency

And in some special hoisting fields, such as: shield machine hoisting, hoisting of long chemical components, etc., it is necessary to lift two cranes at the same time, and the double hooks cooperate to realize the flipping action of the hoisted object (as shown in Figure 2 (a), Fig. 2(b), and Fig. 2(c)), the simultaneous lifting of two cranes requires the cooperation of different operators, which has certain difficulty in cooperation and low work efficiency

[0004] It can be seen that the actual engineering adaptability of the current crawler cranes is small, the limitations are large, the operation is complicated, and the work efficiency is low. Moreover, in the current crane design specifications, considering factors such as structural strength and overall machine stability, each Only one hook is allowed under working conditions

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