A telescopic boom crawler crane with rotary excavation function

Abstract

The invention discloses a telescopic boom crawler crane with a rotary excavating function. The telescopic boom crawler crane comprises a crawler base, a slewing bearing, a power source, a feeding assembly, a secondary lifting winch, a primary lifting winch, a secondary lifting steel wire rope, a primary lifting steel wire rope, a box-type sleeve-connected telescopic boom assembly, a telescopic boom derricking cylinder, a mast, a mast derricking cylinder, a pressure cylinder, a drill stem, a power source pipeline, a power head, a drill bit and a leveling mechanism. The telescopic boom crawler crane with the rotary excavating function, disclosed by the invention, integrates superior functions of a telescopic boom crawler crane and a rotary drilling rig and has the advantages of being good in structural stability, high in hole-forming precision, comprehensive in lifting operation function, economical and efficient.

Description

technical field [0001] The invention relates to a telescopic boom crawler crane with the function of rotary digging, which belongs to the technical field of construction machinery. Background technique [0002] In recent years, with the rapid development of the economy, construction machinery such as rotary drilling rigs, crawler cranes, and telescopic boom cranes have been used more and more in infrastructure fields such as railways, highways, and buildings. With the current overall economic growth slowing down, in order to adapt to this new situation and new normal, users' demand for one machine with multiple functions and one machine with multiple specializations is increasing. [0003] The conventional rotary drilling rig has a single function, only has the drilling function, and the idle rate of the equipment is high. During the construction process, a crane is also needed to assist in the lifting and transfer of the tank and the pile, and the investment in equipment an...

AI Technical Summary

Problems solved by technology

[0006] (1) The stability is poor, and the hole forming accuracy cannot be guaranteed. The height of the mast assembly 5 is low, and there is only one fixed point between the power head 4 and the mast assembly 5. There is no fixed guiding connection point between the drill pipe 7 and the mast assembly 5. However, the length of the drill pipe is relatively long, resulting in poor stability of the drill pipe; moreover, during the rotary excavation operation, the pressurized oil cylinder 6 impacts and pressurizes downward, and the ground will have an upward reaction force on the mast assembly 5. The hoisting wire rope in the auxiliary winch assembly 9 is not stressed, and the reaction force will aggravate the shaking of the drill pipe 7, resulting in poor drilling accuracy;

[0007] (2) There are problems such as short boom and limited lifting performance

Conventional telescopic booms have more than 4 jib sections, and the longest jib length exceeds 50m. The second scheme consists of two jibs with shorter jib lengths, which cannot be used for large-scale and high-height hoisting operations during lifting operations.

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