Double-layer rod feeding box automatic rod feeding device

Abstract

The invention relates to a double-layer rod feeding box automatic rod feeding device applied to a trenchless drilling machine. The device comprises drill rod boxes, rod box seat bodies, rod lifting mechanisms and rod changing mechanisms, wherein the drill rod boxes comprise a first drill rod box and a second drill rod box; the first drill rod box and the second drill rod box are two completely identical rectangular frames, the two frames are tightly connected, the rod box seat bodies are oppositely arranged on the two sides of the bottoms of the drill rod boxes, and the outer sides of the rodbox seat bodies are close to the end surfaces of the drill rod boxes; and the rod lifting mechanisms are connected with the rod box seat bodies through first connecting parts, the rod changing mechanisms are connected with the rod lifting mechanisms through second connecting parts, the rod changing mechanisms comprise rod changing oil cylinders, and fixing hinge seats of the rod changing oil cylinders are arranged on the rod lifting mechanisms. According to the device, the dependence on two-stage cylinders in the prior art is solved, and the defects caused by the use of the double-stage cylinders on the whole machine are avoided.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an automatic rod-loading device for a double-layer rod-loading box applied to a non-excavation drilling machine. Background technique [0002] Horizontal directional drilling technology is a new construction technology that combines directional drilling technology in the petroleum industry with traditional pipeline construction methods. It has the advantages of fast construction speed, high construction precision and low cost. It can be used without excavation. Under the condition of the ground surface, it is a kind of construction machinery for laying various underground public facilities (pipelines, cables, etc.). Clay, pebbles and other ground conditions can be constructed in most non-hard rock areas in my country. The working environment temperature is -15℃~+45℃. [0003] In the construction process of the drilling rig, it is often necessary to replace the drill pipe. At ...

AI Technical Summary

Problems solved by technology

[0005] 1. Both the rod changing cylinder and the fixed hinge seat of the rod lifting cylinder are installed on the drill pipe box seat, the stroke of the rod changing cylinder is relatively large, and the hydraulic oil consumption increases;

[0006] 2. The stroke of the rod change cylinder is too large, the rod change efficiency is low, and due to space constraints, only two-stage cylinders can be used;

[0007] 3. When the drilling rig is working, only the upper drill pipe box needs to be replaced, but because the rod changing mechanism adopts a two-stage cylinder, it is easy to cause the oil cylinders on both sides to rise and fall out of sync and unsteady, resulting in the rod changing action being not smooth

[0008] Therefore, it is urgent to propose a new technical solution to solve the problem of excessive stroke of the rod change cylinder

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