Scaling ladder engineering machinery and ladder assembly of scaling ladder engineering machinery

Abstract

The invention discloses a ladder assembly of scaling ladder engineering machinery. The ladder assembly comprises at least two sections of knuckle arms, wherein each knuckle arm comprises an upper chord component, a lower chord component and a web member; each web member is used for connecting each upper chord component and the corresponding lower chord component; one of the two adjacent knuckle arms is provided with a slide groove; the other one of the two adjacent knuckle arms is provided with a slide rail glidingly matched with the slide groove; and the slide rail is formed on the lower chord component. The oppositely gliding slide groove between the adjacent knuckle arms is formed by the lower chord component; compared with the prior art, the ladder assembly has the advantages that the slide groove is formed in the lower chord component and is formed without the matching of the lower chord component and other components; the factors influencing the smoothness of the slide groove are greatly reduced; the smoothness of the slide groove can be improved; the hidden danger of clamping stagnation can be reduced; the slide groove is formed in the lower chord component, so that the distance between the two knuckle arms can be reduced to a certain degree; the improvement of the utilization rate of the cross section is facilitated; the optimization on the arrangement of other components in the ladder assembly is facilitated; and the integral optimal arrangement is facilitated.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an aerial ladder engineering machinery and a ladder frame thereof. Background technique [0002] The aerial ladder construction machinery is a main fire-fighting assembly for fire fighting and rescue. It mainly includes a chassis and a ladder frame. The ladder frame is installed on the chassis. The expansion and contraction of the ladder frame realizes the high-altitude operation function of the working platform at the top of the ladder frame. [0003] As the main load-bearing part of the aerial ladder construction machinery, the ladder frame mechanism directly determines the rated load of the whole vehicle, and the structural quality of its structural parts directly affects the safety of the whole vehicle. The aerial ladder vehicle is famous for its maneuverability and quick rescue, so it has high requirements for the smoothness and safety of its expansion and cont...

AI Technical Summary

Problems solved by technology

The deformation of the entire structure due to welding affects the smoothness of the expansion and contraction of the ladder frame, the manufacturing process is complicated, the production efficiency is low, and the cost is high

In addition, the guide groove installed on the slider is a welded structure, and there is a potential safety hazard of being stuck during the operation of the ladder frame

[0007] In addition, the ladder frame composed of square bottom chord occupies a relatively large space, and it is not easy to arrange other parts, and the utilization rate of the ladder frame section is relatively low

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