Gin pole turnover mechanism

Abstract

The invention claims a mast turnover mechanism, including a chassis, a support rod, a movable arm, an operational arm, an amplitude variation oil cylinder, a triangular bracket, a mast and a mast oil cylinder; one ends of the support rod and the movable arm are hinged with the chassis respectively; two ends of the operational arm are hinged with the other ends of the support rod and the movable arm respectively; the operational arm is fixedly connected with the bottom edge of the triangular bracket; two ends of the bevel edge of the triangular bracket are hinged with the mast oil cylinder and the mast respectively through the fifth hinge shaft and the sixth hinge shaft; the chassis, the support rod, the movable arm and the operational arm form parallelogram four-bar linkage mechanism; the amplitude variation oil cylinder can drive the four-bar linkage mechanism to move; the mast turnover mechanism set with amplitude collecting oil cylinder can make the fifth hinge shaft and the sixth hinge shaft revolve relatively. The mast turnover mechanism makes the mast incline forwards to the front end of the pile driving machinery, which reduces the transport height of the pile driving machinery.

Description

technical field [0001] The invention relates to a mast turning mechanism of a construction machine, in particular to a mast turning mechanism of a piling machine. Background technique [0002] With the increase of the cost of modern construction machinery, it is inevitable to change the construction site. It is a technical problem that must be considered in the structure of modern construction machinery to facilitate the construction machine to change the construction site. [0003] The mast of the piling machinery generally has a relatively high height. During the construction operation, the mast should be kept perpendicular to the ground; during transportation, in order to facilitate the transfer of mechanical transportation, the mast needs to be lowered. Therefore, the piling mechanism generally has two heights. , one is the working height under the construction working state; the other is the transportation height under the transportation state. For example, a rotary dr...

AI Technical Summary

Problems solved by technology

Although the above-mentioned prior art can make the mast tilt backward to a horizontal state, due to the increase in the height of the rotary drilling rig, after tilting backward to a horizontal state, the mast is still located above the chassis of the rotary drilling rig, and its transportation height still cannot meet the requirements of transportation. When the road conditions limit the height of the machine

For example, when passing through a tunnel or bridge, its height still exceeds the limit height, resulting in increased transportation costs and increased difficulty

[0009] Therefore, under the situation of not dismantling, the mast turning mechanism in the prior art can't reduce the existing piling machinery transportation height that itself has a certain height

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