Drilling device for square hole

A drilling device and a drilling shaft technology, applied in earthwork drilling, drilling equipment and methods, drilling equipment, etc., can solve the problems of low digging efficiency, inconvenient soil removal, poor safety, etc., and improve the digging efficiency and safety factor, improve drilling quality, and ensure the effect of accuracy

Pending Publication Date: 2020-04-03
青海岩土工程勘察咨询有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

It has defects such as poor safety, inconvenient removal of accumulated soil, and low efficiency of digging holes, which can no longer meet the relevant requirements of national safety production and engineering construction.

Method used

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  • Drilling device for square hole
  • Drilling device for square hole
  • Drilling device for square hole

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Experimental program
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Effect test

Embodiment

[0037] The specific embodiment of the present invention is as Figure 1-6 Shown, a kind of drilling device of square hole comprises soil drilling mechanism 1 and earth taking mechanism 2. Wherein, the earth drilling mechanism 1 includes a main drilling shaft 11 arranged vertically and capable of axial rotation, and a reaming crawler belt 14 arranged around the lower part of the main drilling shaft 11 in a square shape and having a belt surface parallel to the main drilling shaft 11 . The lower end of the main drilling shaft 11 is connected with a drill bit 15 , and the lower edge of the reaming track 14 is provided with a plurality of reaming teeth 141 . The lower part of the main drilling shaft 11 is provided with a driving gear 12 coaxially arranged therewith. The inboards of the four straight sides of the reaming crawler belt 14 are all provided with driven tooth columns 13, and the driven tooth columns 13 are respectively in transmission engagement with the reaming crawle...

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PUM

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Abstract

The invention discloses a drilling device for a square hole, and relates to the technical field of drilling equipment for square holes. The drilling device is mainly used for solving the problems thatan existing square hole is mainly excavated by manpower, and the efficiency is low. The drilling device mainly structurally comprises a soil drilling mechanism and a soil taking mechanism, wherein the soil drilling mechanism comprises a vertically-arranged main drilling shaft and a hole expanding crawler belt which is arranged around the lower part of the main drilling shaft in a square shape; and the lower end of the main drilling shaft is connected with a drill bit, and a plurality of hole expanding teeth are arranged on the edge of the lower part of the hole expanding crawler belt. The drilling device for the square hole is ingenious in structure, the square hole can be automatically drilled, manual hole digging is not needed, and the hole digging efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of drilling equipment for square holes, in particular to a drilling device for square holes. Background technique [0002] In buildings, bridges, roads, and municipal foundation projects, it is often necessary to drill holes to install the underlying load-bearing structure of the project—pile foundation. At present, there are mainly two types of common pile foundation structures, namely circular piles and square piles. Among them, compared with the circular pile, the square pile has a larger side friction area, stronger side friction force and better bearing capacity in the case of the same cross-section and the same material. Therefore, the mechanical properties of square piles are significantly better than circular piles. [0003] However, most of the rotary excavators on the market can only be used to drill circular holes and construct circular piles. For the excavation of square holes, mainly rely on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B7/28E21B27/00
CPCE21B7/001E21B7/28E21B27/00
Inventor 李卫珂高红灵范吉新李兄莲王靖天李海静魏婷婷张梦垚
Owner 青海岩土工程勘察咨询有限公司
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