Telescopic arm lifting hook

Abstract

The invention relates to a telescopic arm lifting hook, wherein a lifting arm assembly comprises a first stage lifting arm and a second stage lifting arm, the first stage lifting arm is a hollow box-shaped structure, a sliding mechanism is adopted in the first stage lifting arm to form a sleeve connection with the second stage lifting arm so as to form a sliding telescopic structure, the lifting hook device is connected with the front end of the second stage lifting arm, a positioning mechanism is arranged in the lifting arm assembly and is provided for positioning the extending position of the second stage lifting arm, the first stage lifting arm and the second stage lifting arm are the hollow box-shaped structures formed by welding four plates, the sliding mechanism comprises at least two sets of rolling bearings arranged on the bottom plate of the first stage lifting arm, and the bottom plate of the second stage lifting arm is supported on the rolling bear so as to form sliding telescopic movement. The telescopic arm lifting hook has the following advantages that: the telescopic arm lifting hook can perform telescopic movement, such that the requirement that the large size cargo or the cargo at the far and deep place is lifted can be met; the telescopic arm lifting hook is provided with the rolling bear support, such that the friction resistance is low, and the telescopic movement has the characteristic of labor saving; and the telescopic arm lifting hook is the tripod support structure, and has characteristics of high strength and high bearing capacity.

Description

technical field [0001] The invention relates to the technical field of attachments of industrial vehicles and engineering machinery, in particular to a telescopic arm hook used for lifting goods by a forklift or a loader. Background technique [0002] Generally, construction machinery such as forklifts and loaders can be equipped with booms, and hooks are installed on the booms, which can lift bagged objects (such as fertilizer bags, feed bags, salt mine bags, sugar bags, etc.), machine tools, machinery, etc. equipment, various raw materials, etc. But present boom is all fixed rod, only has several groups of installation holes above, adjusts the distance by reinstalling and adjusting the position of suspension hook, realizes the hoisting operation of far and near. Since the length of the boom is constant, the adjustment distance is limited. When encountering long poles, large machine tools, or lifting goods from relatively deep places such as trucks and train compartments, ...

AI Technical Summary

Problems solved by technology

Since the length of the boom is constant, the adjustment distance is limited. When encountering long poles, large machine tools, or lifting goods from relatively deep places such as trucks and train compartments, the boom hook is often limited and not long enough. , unable to work

However, if the boom is lengthened, the self-weight will be increased, the size of the vehicle will be increased, and the permeability will be greatly reduced.

Images